зеркало из https://github.com/Azure/ARO-RP.git
vendor
This commit is contained in:
Jim Minter
Родитель
2fb6044abf
Коммит
0067182632
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@ -393,6 +393,17 @@
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pruneopts = "UT"
|
||||
revision = "aabc10ec26b754e797f9028f4589c5b7bd90dc20"
|
||||
|
||||
[[projects]]
|
||||
branch = "master"
|
||||
digest = "1:ecdc8e0fe3bc7d549af1c9c36acf3820523b707d6c071b6d0c3860882c6f7b42"
|
||||
name = "github.com/docker/spdystream"
|
||||
packages = [
|
||||
".",
|
||||
"spdy",
|
||||
]
|
||||
pruneopts = "UT"
|
||||
revision = "6480d4af844c189cf5dd913db24ddd339d3a4f85"
|
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|
||||
[[projects]]
|
||||
digest = "1:e15b0065da1011473634ffa0dda17731ea1d5f6fb8bb87905216d95fa29eaec0"
|
||||
name = "github.com/emicklei/go-restful"
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@ -1596,7 +1607,7 @@
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|
||||
[[projects]]
|
||||
branch = "origin-4.3-kubernetes-1.16.2"
|
||||
digest = "1:86f478c8a6903e47e6548df3e716188fef4a38d7949d60a79499362925ea4208"
|
||||
digest = "1:b499c1ca627563b5b9bc952a3aa5e0f298c41f1c092b096f6a4bd8b5aab4c2f7"
|
||||
name = "k8s.io/apimachinery"
|
||||
packages = [
|
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"pkg/api/errors",
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@ -1622,6 +1633,8 @@
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"pkg/util/clock",
|
||||
"pkg/util/errors",
|
||||
"pkg/util/framer",
|
||||
"pkg/util/httpstream",
|
||||
"pkg/util/httpstream/spdy",
|
||||
"pkg/util/intstr",
|
||||
"pkg/util/json",
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||||
"pkg/util/mergepatch",
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@ -1638,6 +1651,7 @@
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"pkg/version",
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||||
"pkg/watch",
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||||
"third_party/forked/golang/json",
|
||||
"third_party/forked/golang/netutil",
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||||
"third_party/forked/golang/reflect",
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||||
]
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pruneopts = "UT"
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@ -1646,7 +1660,7 @@
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[[projects]]
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||||
branch = "origin-4.3-kubernetes-1.16.2"
|
||||
digest = "1:e71e465ba93c57c15194845e6153f412a35c173cd581044f405514c15b7b7f91"
|
||||
digest = "1:0a1df4ad7aee881b3eebbcedf7fa947f39574a461a22987f75c647a8094bb0fe"
|
||||
name = "k8s.io/client-go"
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packages = [
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"discovery",
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@ -1707,6 +1721,7 @@
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"tools/metrics",
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||||
"tools/reference",
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||||
"transport",
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||||
"transport/spdy",
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||||
"util/cert",
|
||||
"util/connrotation",
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"util/flowcontrol",
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||||
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@ -1898,6 +1913,7 @@
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"k8s.io/client-go/tools/clientcmd",
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"k8s.io/client-go/tools/clientcmd/api/v1",
|
||||
"k8s.io/client-go/tools/metrics",
|
||||
"k8s.io/client-go/transport/spdy",
|
||||
"k8s.io/client-go/util/retry",
|
||||
]
|
||||
solver-name = "gps-cdcl"
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||||
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@ -270,6 +270,15 @@
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}
|
||||
}
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||||
},
|
||||
{
|
||||
"component": {
|
||||
"type": "git",
|
||||
"git": {
|
||||
"commitHash": "6480d4af844c189cf5dd913db24ddd339d3a4f85",
|
||||
"repositoryUrl": "https://github.com/docker/spdystream/"
|
||||
}
|
||||
}
|
||||
},
|
||||
{
|
||||
"component": {
|
||||
"type": "git",
|
||||
|
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|
|||
|
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@ -0,0 +1,13 @@
|
|||
# Contributing to SpdyStream
|
||||
|
||||
Want to hack on spdystream? Awesome! Here are instructions to get you
|
||||
started.
|
||||
|
||||
SpdyStream is a part of the [Docker](https://docker.io) project, and follows
|
||||
the same rules and principles. If you're already familiar with the way
|
||||
Docker does things, you'll feel right at home.
|
||||
|
||||
Otherwise, go read
|
||||
[Docker's contributions guidelines](https://github.com/dotcloud/docker/blob/master/CONTRIBUTING.md).
|
||||
|
||||
Happy hacking!
|
||||
|
|
@ -0,0 +1,191 @@
|
|||
|
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Apache License
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||||
m. You means the individual or entity exercising the Licensed Rights
|
||||
under this Public License. Your has a corresponding meaning.
|
||||
|
||||
|
||||
Section 2 -- Scope.
|
||||
|
||||
a. License grant.
|
||||
|
||||
1. Subject to the terms and conditions of this Public License,
|
||||
the Licensor hereby grants You a worldwide, royalty-free,
|
||||
non-sublicensable, non-exclusive, irrevocable license to
|
||||
exercise the Licensed Rights in the Licensed Material to:
|
||||
|
||||
a. reproduce and Share the Licensed Material, in whole or
|
||||
in part; and
|
||||
|
||||
b. produce, reproduce, and Share Adapted Material.
|
||||
|
||||
2. Exceptions and Limitations. For the avoidance of doubt, where
|
||||
Exceptions and Limitations apply to Your use, this Public
|
||||
License does not apply, and You do not need to comply with
|
||||
its terms and conditions.
|
||||
|
||||
3. Term. The term of this Public License is specified in Section
|
||||
6(a).
|
||||
|
||||
4. Media and formats; technical modifications allowed. The
|
||||
Licensor authorizes You to exercise the Licensed Rights in
|
||||
all media and formats whether now known or hereafter created,
|
||||
and to make technical modifications necessary to do so. The
|
||||
Licensor waives and/or agrees not to assert any right or
|
||||
authority to forbid You from making technical modifications
|
||||
necessary to exercise the Licensed Rights, including
|
||||
technical modifications necessary to circumvent Effective
|
||||
Technological Measures. For purposes of this Public License,
|
||||
simply making modifications authorized by this Section 2(a)
|
||||
(4) never produces Adapted Material.
|
||||
|
||||
5. Downstream recipients.
|
||||
|
||||
a. Offer from the Licensor -- Licensed Material. Every
|
||||
recipient of the Licensed Material automatically
|
||||
receives an offer from the Licensor to exercise the
|
||||
Licensed Rights under the terms and conditions of this
|
||||
Public License.
|
||||
|
||||
b. Additional offer from the Licensor -- Adapted Material.
|
||||
Every recipient of Adapted Material from You
|
||||
automatically receives an offer from the Licensor to
|
||||
exercise the Licensed Rights in the Adapted Material
|
||||
under the conditions of the Adapter's License You apply.
|
||||
|
||||
c. No downstream restrictions. You may not offer or impose
|
||||
any additional or different terms or conditions on, or
|
||||
apply any Effective Technological Measures to, the
|
||||
Licensed Material if doing so restricts exercise of the
|
||||
Licensed Rights by any recipient of the Licensed
|
||||
Material.
|
||||
|
||||
6. No endorsement. Nothing in this Public License constitutes or
|
||||
may be construed as permission to assert or imply that You
|
||||
are, or that Your use of the Licensed Material is, connected
|
||||
with, or sponsored, endorsed, or granted official status by,
|
||||
the Licensor or others designated to receive attribution as
|
||||
provided in Section 3(a)(1)(A)(i).
|
||||
|
||||
b. Other rights.
|
||||
|
||||
1. Moral rights, such as the right of integrity, are not
|
||||
licensed under this Public License, nor are publicity,
|
||||
privacy, and/or other similar personality rights; however, to
|
||||
the extent possible, the Licensor waives and/or agrees not to
|
||||
assert any such rights held by the Licensor to the limited
|
||||
extent necessary to allow You to exercise the Licensed
|
||||
Rights, but not otherwise.
|
||||
|
||||
2. Patent and trademark rights are not licensed under this
|
||||
Public License.
|
||||
|
||||
3. To the extent possible, the Licensor waives any right to
|
||||
collect royalties from You for the exercise of the Licensed
|
||||
Rights, whether directly or through a collecting society
|
||||
under any voluntary or waivable statutory or compulsory
|
||||
licensing scheme. In all other cases the Licensor expressly
|
||||
reserves any right to collect such royalties.
|
||||
|
||||
|
||||
Section 3 -- License Conditions.
|
||||
|
||||
Your exercise of the Licensed Rights is expressly made subject to the
|
||||
following conditions.
|
||||
|
||||
a. Attribution.
|
||||
|
||||
1. If You Share the Licensed Material (including in modified
|
||||
form), You must:
|
||||
|
||||
a. retain the following if it is supplied by the Licensor
|
||||
with the Licensed Material:
|
||||
|
||||
i. identification of the creator(s) of the Licensed
|
||||
Material and any others designated to receive
|
||||
attribution, in any reasonable manner requested by
|
||||
the Licensor (including by pseudonym if
|
||||
designated);
|
||||
|
||||
ii. a copyright notice;
|
||||
|
||||
iii. a notice that refers to this Public License;
|
||||
|
||||
iv. a notice that refers to the disclaimer of
|
||||
warranties;
|
||||
|
||||
v. a URI or hyperlink to the Licensed Material to the
|
||||
extent reasonably practicable;
|
||||
|
||||
b. indicate if You modified the Licensed Material and
|
||||
retain an indication of any previous modifications; and
|
||||
|
||||
c. indicate the Licensed Material is licensed under this
|
||||
Public License, and include the text of, or the URI or
|
||||
hyperlink to, this Public License.
|
||||
|
||||
2. You may satisfy the conditions in Section 3(a)(1) in any
|
||||
reasonable manner based on the medium, means, and context in
|
||||
which You Share the Licensed Material. For example, it may be
|
||||
reasonable to satisfy the conditions by providing a URI or
|
||||
hyperlink to a resource that includes the required
|
||||
information.
|
||||
|
||||
3. If requested by the Licensor, You must remove any of the
|
||||
information required by Section 3(a)(1)(A) to the extent
|
||||
reasonably practicable.
|
||||
|
||||
b. ShareAlike.
|
||||
|
||||
In addition to the conditions in Section 3(a), if You Share
|
||||
Adapted Material You produce, the following conditions also apply.
|
||||
|
||||
1. The Adapter's License You apply must be a Creative Commons
|
||||
license with the same License Elements, this version or
|
||||
later, or a BY-SA Compatible License.
|
||||
|
||||
2. You must include the text of, or the URI or hyperlink to, the
|
||||
Adapter's License You apply. You may satisfy this condition
|
||||
in any reasonable manner based on the medium, means, and
|
||||
context in which You Share Adapted Material.
|
||||
|
||||
3. You may not offer or impose any additional or different terms
|
||||
or conditions on, or apply any Effective Technological
|
||||
Measures to, Adapted Material that restrict exercise of the
|
||||
rights granted under the Adapter's License You apply.
|
||||
|
||||
|
||||
Section 4 -- Sui Generis Database Rights.
|
||||
|
||||
Where the Licensed Rights include Sui Generis Database Rights that
|
||||
apply to Your use of the Licensed Material:
|
||||
|
||||
a. for the avoidance of doubt, Section 2(a)(1) grants You the right
|
||||
to extract, reuse, reproduce, and Share all or a substantial
|
||||
portion of the contents of the database;
|
||||
|
||||
b. if You include all or a substantial portion of the database
|
||||
contents in a database in which You have Sui Generis Database
|
||||
Rights, then the database in which You have Sui Generis Database
|
||||
Rights (but not its individual contents) is Adapted Material,
|
||||
|
||||
including for purposes of Section 3(b); and
|
||||
c. You must comply with the conditions in Section 3(a) if You Share
|
||||
all or a substantial portion of the contents of the database.
|
||||
|
||||
For the avoidance of doubt, this Section 4 supplements and does not
|
||||
replace Your obligations under this Public License where the Licensed
|
||||
Rights include other Copyright and Similar Rights.
|
||||
|
||||
|
||||
Section 5 -- Disclaimer of Warranties and Limitation of Liability.
|
||||
|
||||
a. UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE
|
||||
EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS
|
||||
AND AS-AVAILABLE, AND MAKES NO REPRESENTATIONS OR WARRANTIES OF
|
||||
ANY KIND CONCERNING THE LICENSED MATERIAL, WHETHER EXPRESS,
|
||||
IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION,
|
||||
WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR
|
||||
PURPOSE, NON-INFRINGEMENT, ABSENCE OF LATENT OR OTHER DEFECTS,
|
||||
ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT
|
||||
KNOWN OR DISCOVERABLE. WHERE DISCLAIMERS OF WARRANTIES ARE NOT
|
||||
ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU.
|
||||
|
||||
b. TO THE EXTENT POSSIBLE, IN NO EVENT WILL THE LICENSOR BE LIABLE
|
||||
TO YOU ON ANY LEGAL THEORY (INCLUDING, WITHOUT LIMITATION,
|
||||
NEGLIGENCE) OR OTHERWISE FOR ANY DIRECT, SPECIAL, INDIRECT,
|
||||
INCIDENTAL, CONSEQUENTIAL, PUNITIVE, EXEMPLARY, OR OTHER LOSSES,
|
||||
COSTS, EXPENSES, OR DAMAGES ARISING OUT OF THIS PUBLIC LICENSE OR
|
||||
USE OF THE LICENSED MATERIAL, EVEN IF THE LICENSOR HAS BEEN
|
||||
ADVISED OF THE POSSIBILITY OF SUCH LOSSES, COSTS, EXPENSES, OR
|
||||
DAMAGES. WHERE A LIMITATION OF LIABILITY IS NOT ALLOWED IN FULL OR
|
||||
IN PART, THIS LIMITATION MAY NOT APPLY TO YOU.
|
||||
|
||||
c. The disclaimer of warranties and limitation of liability provided
|
||||
above shall be interpreted in a manner that, to the extent
|
||||
possible, most closely approximates an absolute disclaimer and
|
||||
waiver of all liability.
|
||||
|
||||
|
||||
Section 6 -- Term and Termination.
|
||||
|
||||
a. This Public License applies for the term of the Copyright and
|
||||
Similar Rights licensed here. However, if You fail to comply with
|
||||
this Public License, then Your rights under this Public License
|
||||
terminate automatically.
|
||||
|
||||
b. Where Your right to use the Licensed Material has terminated under
|
||||
Section 6(a), it reinstates:
|
||||
|
||||
1. automatically as of the date the violation is cured, provided
|
||||
it is cured within 30 days of Your discovery of the
|
||||
violation; or
|
||||
|
||||
2. upon express reinstatement by the Licensor.
|
||||
|
||||
For the avoidance of doubt, this Section 6(b) does not affect any
|
||||
right the Licensor may have to seek remedies for Your violations
|
||||
of this Public License.
|
||||
|
||||
c. For the avoidance of doubt, the Licensor may also offer the
|
||||
Licensed Material under separate terms or conditions or stop
|
||||
distributing the Licensed Material at any time; however, doing so
|
||||
will not terminate this Public License.
|
||||
|
||||
d. Sections 1, 5, 6, 7, and 8 survive termination of this Public
|
||||
License.
|
||||
|
||||
|
||||
Section 7 -- Other Terms and Conditions.
|
||||
|
||||
a. The Licensor shall not be bound by any additional or different
|
||||
terms or conditions communicated by You unless expressly agreed.
|
||||
|
||||
b. Any arrangements, understandings, or agreements regarding the
|
||||
Licensed Material not stated herein are separate from and
|
||||
independent of the terms and conditions of this Public License.
|
||||
|
||||
|
||||
Section 8 -- Interpretation.
|
||||
|
||||
a. For the avoidance of doubt, this Public License does not, and
|
||||
shall not be interpreted to, reduce, limit, restrict, or impose
|
||||
conditions on any use of the Licensed Material that could lawfully
|
||||
be made without permission under this Public License.
|
||||
|
||||
b. To the extent possible, if any provision of this Public License is
|
||||
deemed unenforceable, it shall be automatically reformed to the
|
||||
minimum extent necessary to make it enforceable. If the provision
|
||||
cannot be reformed, it shall be severed from this Public License
|
||||
without affecting the enforceability of the remaining terms and
|
||||
conditions.
|
||||
|
||||
c. No term or condition of this Public License will be waived and no
|
||||
failure to comply consented to unless expressly agreed to by the
|
||||
Licensor.
|
||||
|
||||
d. Nothing in this Public License constitutes or may be interpreted
|
||||
as a limitation upon, or waiver of, any privileges and immunities
|
||||
that apply to the Licensor or You, including from the legal
|
||||
processes of any jurisdiction or authority.
|
||||
|
||||
|
||||
=======================================================================
|
||||
|
||||
Creative Commons is not a party to its public licenses.
|
||||
Notwithstanding, Creative Commons may elect to apply one of its public
|
||||
licenses to material it publishes and in those instances will be
|
||||
considered the "Licensor." Except for the limited purpose of indicating
|
||||
that material is shared under a Creative Commons public license or as
|
||||
otherwise permitted by the Creative Commons policies published at
|
||||
creativecommons.org/policies, Creative Commons does not authorize the
|
||||
use of the trademark "Creative Commons" or any other trademark or logo
|
||||
of Creative Commons without its prior written consent including,
|
||||
without limitation, in connection with any unauthorized modifications
|
||||
to any of its public licenses or any other arrangements,
|
||||
understandings, or agreements concerning use of licensed material. For
|
||||
the avoidance of doubt, this paragraph does not form part of the public
|
||||
licenses.
|
||||
|
||||
Creative Commons may be contacted at creativecommons.org.
|
||||
|
|
@ -0,0 +1,28 @@
|
|||
# Spdystream maintainers file
|
||||
#
|
||||
# This file describes who runs the docker/spdystream project and how.
|
||||
# This is a living document - if you see something out of date or missing, speak up!
|
||||
#
|
||||
# It is structured to be consumable by both humans and programs.
|
||||
# To extract its contents programmatically, use any TOML-compliant parser.
|
||||
#
|
||||
# This file is compiled into the MAINTAINERS file in docker/opensource.
|
||||
#
|
||||
[Org]
|
||||
[Org."Core maintainers"]
|
||||
people = [
|
||||
"dmcgowan",
|
||||
]
|
||||
|
||||
[people]
|
||||
|
||||
# A reference list of all people associated with the project.
|
||||
# All other sections should refer to people by their canonical key
|
||||
# in the people section.
|
||||
|
||||
# ADD YOURSELF HERE IN ALPHABETICAL ORDER
|
||||
|
||||
[people.dmcgowan]
|
||||
Name = "Derek McGowan"
|
||||
Email = "derek@docker.com"
|
||||
GitHub = "dmcgowan"
|
||||
|
|
@ -0,0 +1,77 @@
|
|||
# SpdyStream
|
||||
|
||||
A multiplexed stream library using spdy
|
||||
|
||||
## Usage
|
||||
|
||||
Client example (connecting to mirroring server without auth)
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/docker/spdystream"
|
||||
"net"
|
||||
"net/http"
|
||||
)
|
||||
|
||||
func main() {
|
||||
conn, err := net.Dial("tcp", "localhost:8080")
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
spdyConn, err := spdystream.NewConnection(conn, false)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
go spdyConn.Serve(spdystream.NoOpStreamHandler)
|
||||
stream, err := spdyConn.CreateStream(http.Header{}, nil, false)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
|
||||
stream.Wait()
|
||||
|
||||
fmt.Fprint(stream, "Writing to stream")
|
||||
|
||||
buf := make([]byte, 25)
|
||||
stream.Read(buf)
|
||||
fmt.Println(string(buf))
|
||||
|
||||
stream.Close()
|
||||
}
|
||||
```
|
||||
|
||||
Server example (mirroring server without auth)
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"github.com/docker/spdystream"
|
||||
"net"
|
||||
)
|
||||
|
||||
func main() {
|
||||
listener, err := net.Listen("tcp", "localhost:8080")
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
for {
|
||||
conn, err := listener.Accept()
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
spdyConn, err := spdystream.NewConnection(conn, true)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
go spdyConn.Serve(spdystream.MirrorStreamHandler)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## Copyright and license
|
||||
|
||||
Copyright © 2014-2015 Docker, Inc. All rights reserved, except as follows. Code is released under the Apache 2.0 license. The README.md file, and files in the "docs" folder are licensed under the Creative Commons Attribution 4.0 International License under the terms and conditions set forth in the file "LICENSE.docs". You may obtain a duplicate copy of the same license, titled CC-BY-SA-4.0, at http://creativecommons.org/licenses/by/4.0/.
|
||||
|
|
@ -0,0 +1,959 @@
|
|||
package spdystream
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"net"
|
||||
"net/http"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/docker/spdystream/spdy"
|
||||
)
|
||||
|
||||
var (
|
||||
ErrInvalidStreamId = errors.New("Invalid stream id")
|
||||
ErrTimeout = errors.New("Timeout occurred")
|
||||
ErrReset = errors.New("Stream reset")
|
||||
ErrWriteClosedStream = errors.New("Write on closed stream")
|
||||
)
|
||||
|
||||
const (
|
||||
FRAME_WORKERS = 5
|
||||
QUEUE_SIZE = 50
|
||||
)
|
||||
|
||||
type StreamHandler func(stream *Stream)
|
||||
|
||||
type AuthHandler func(header http.Header, slot uint8, parent uint32) bool
|
||||
|
||||
type idleAwareFramer struct {
|
||||
f *spdy.Framer
|
||||
conn *Connection
|
||||
writeLock sync.Mutex
|
||||
resetChan chan struct{}
|
||||
setTimeoutLock sync.Mutex
|
||||
setTimeoutChan chan time.Duration
|
||||
timeout time.Duration
|
||||
}
|
||||
|
||||
func newIdleAwareFramer(framer *spdy.Framer) *idleAwareFramer {
|
||||
iaf := &idleAwareFramer{
|
||||
f: framer,
|
||||
resetChan: make(chan struct{}, 2),
|
||||
// setTimeoutChan needs to be buffered to avoid deadlocks when calling setIdleTimeout at about
|
||||
// the same time the connection is being closed
|
||||
setTimeoutChan: make(chan time.Duration, 1),
|
||||
}
|
||||
return iaf
|
||||
}
|
||||
|
||||
func (i *idleAwareFramer) monitor() {
|
||||
var (
|
||||
timer *time.Timer
|
||||
expired <-chan time.Time
|
||||
resetChan = i.resetChan
|
||||
setTimeoutChan = i.setTimeoutChan
|
||||
)
|
||||
Loop:
|
||||
for {
|
||||
select {
|
||||
case timeout := <-i.setTimeoutChan:
|
||||
i.timeout = timeout
|
||||
if timeout == 0 {
|
||||
if timer != nil {
|
||||
timer.Stop()
|
||||
}
|
||||
} else {
|
||||
if timer == nil {
|
||||
timer = time.NewTimer(timeout)
|
||||
expired = timer.C
|
||||
} else {
|
||||
timer.Reset(timeout)
|
||||
}
|
||||
}
|
||||
case <-resetChan:
|
||||
if timer != nil && i.timeout > 0 {
|
||||
timer.Reset(i.timeout)
|
||||
}
|
||||
case <-expired:
|
||||
i.conn.streamCond.L.Lock()
|
||||
streams := i.conn.streams
|
||||
i.conn.streams = make(map[spdy.StreamId]*Stream)
|
||||
i.conn.streamCond.Broadcast()
|
||||
i.conn.streamCond.L.Unlock()
|
||||
go func() {
|
||||
for _, stream := range streams {
|
||||
stream.resetStream()
|
||||
}
|
||||
i.conn.Close()
|
||||
}()
|
||||
case <-i.conn.closeChan:
|
||||
if timer != nil {
|
||||
timer.Stop()
|
||||
}
|
||||
|
||||
// Start a goroutine to drain resetChan. This is needed because we've seen
|
||||
// some unit tests with large numbers of goroutines get into a situation
|
||||
// where resetChan fills up, at least 1 call to Write() is still trying to
|
||||
// send to resetChan, the connection gets closed, and this case statement
|
||||
// attempts to grab the write lock that Write() already has, causing a
|
||||
// deadlock.
|
||||
//
|
||||
// See https://github.com/docker/spdystream/issues/49 for more details.
|
||||
go func() {
|
||||
for _ = range resetChan {
|
||||
}
|
||||
}()
|
||||
|
||||
go func() {
|
||||
for _ = range setTimeoutChan {
|
||||
}
|
||||
}()
|
||||
|
||||
i.writeLock.Lock()
|
||||
close(resetChan)
|
||||
i.resetChan = nil
|
||||
i.writeLock.Unlock()
|
||||
|
||||
i.setTimeoutLock.Lock()
|
||||
close(i.setTimeoutChan)
|
||||
i.setTimeoutChan = nil
|
||||
i.setTimeoutLock.Unlock()
|
||||
|
||||
break Loop
|
||||
}
|
||||
}
|
||||
|
||||
// Drain resetChan
|
||||
for _ = range resetChan {
|
||||
}
|
||||
}
|
||||
|
||||
func (i *idleAwareFramer) WriteFrame(frame spdy.Frame) error {
|
||||
i.writeLock.Lock()
|
||||
defer i.writeLock.Unlock()
|
||||
if i.resetChan == nil {
|
||||
return io.EOF
|
||||
}
|
||||
err := i.f.WriteFrame(frame)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
i.resetChan <- struct{}{}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (i *idleAwareFramer) ReadFrame() (spdy.Frame, error) {
|
||||
frame, err := i.f.ReadFrame()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// resetChan should never be closed since it is only closed
|
||||
// when the connection has closed its closeChan. This closure
|
||||
// only occurs after all Reads have finished
|
||||
// TODO (dmcgowan): refactor relationship into connection
|
||||
i.resetChan <- struct{}{}
|
||||
|
||||
return frame, nil
|
||||
}
|
||||
|
||||
func (i *idleAwareFramer) setIdleTimeout(timeout time.Duration) {
|
||||
i.setTimeoutLock.Lock()
|
||||
defer i.setTimeoutLock.Unlock()
|
||||
|
||||
if i.setTimeoutChan == nil {
|
||||
return
|
||||
}
|
||||
|
||||
i.setTimeoutChan <- timeout
|
||||
}
|
||||
|
||||
type Connection struct {
|
||||
conn net.Conn
|
||||
framer *idleAwareFramer
|
||||
|
||||
closeChan chan bool
|
||||
goneAway bool
|
||||
lastStreamChan chan<- *Stream
|
||||
goAwayTimeout time.Duration
|
||||
closeTimeout time.Duration
|
||||
|
||||
streamLock *sync.RWMutex
|
||||
streamCond *sync.Cond
|
||||
streams map[spdy.StreamId]*Stream
|
||||
|
||||
nextIdLock sync.Mutex
|
||||
receiveIdLock sync.Mutex
|
||||
nextStreamId spdy.StreamId
|
||||
receivedStreamId spdy.StreamId
|
||||
|
||||
pingIdLock sync.Mutex
|
||||
pingId uint32
|
||||
pingChans map[uint32]chan error
|
||||
|
||||
shutdownLock sync.Mutex
|
||||
shutdownChan chan error
|
||||
hasShutdown bool
|
||||
|
||||
// for testing https://github.com/docker/spdystream/pull/56
|
||||
dataFrameHandler func(*spdy.DataFrame) error
|
||||
}
|
||||
|
||||
// NewConnection creates a new spdy connection from an existing
|
||||
// network connection.
|
||||
func NewConnection(conn net.Conn, server bool) (*Connection, error) {
|
||||
framer, framerErr := spdy.NewFramer(conn, conn)
|
||||
if framerErr != nil {
|
||||
return nil, framerErr
|
||||
}
|
||||
idleAwareFramer := newIdleAwareFramer(framer)
|
||||
var sid spdy.StreamId
|
||||
var rid spdy.StreamId
|
||||
var pid uint32
|
||||
if server {
|
||||
sid = 2
|
||||
rid = 1
|
||||
pid = 2
|
||||
} else {
|
||||
sid = 1
|
||||
rid = 2
|
||||
pid = 1
|
||||
}
|
||||
|
||||
streamLock := new(sync.RWMutex)
|
||||
streamCond := sync.NewCond(streamLock)
|
||||
|
||||
session := &Connection{
|
||||
conn: conn,
|
||||
framer: idleAwareFramer,
|
||||
|
||||
closeChan: make(chan bool),
|
||||
goAwayTimeout: time.Duration(0),
|
||||
closeTimeout: time.Duration(0),
|
||||
|
||||
streamLock: streamLock,
|
||||
streamCond: streamCond,
|
||||
streams: make(map[spdy.StreamId]*Stream),
|
||||
nextStreamId: sid,
|
||||
receivedStreamId: rid,
|
||||
|
||||
pingId: pid,
|
||||
pingChans: make(map[uint32]chan error),
|
||||
|
||||
shutdownChan: make(chan error),
|
||||
}
|
||||
session.dataFrameHandler = session.handleDataFrame
|
||||
idleAwareFramer.conn = session
|
||||
go idleAwareFramer.monitor()
|
||||
|
||||
return session, nil
|
||||
}
|
||||
|
||||
// Ping sends a ping frame across the connection and
|
||||
// returns the response time
|
||||
func (s *Connection) Ping() (time.Duration, error) {
|
||||
pid := s.pingId
|
||||
s.pingIdLock.Lock()
|
||||
if s.pingId > 0x7ffffffe {
|
||||
s.pingId = s.pingId - 0x7ffffffe
|
||||
} else {
|
||||
s.pingId = s.pingId + 2
|
||||
}
|
||||
s.pingIdLock.Unlock()
|
||||
pingChan := make(chan error)
|
||||
s.pingChans[pid] = pingChan
|
||||
defer delete(s.pingChans, pid)
|
||||
|
||||
frame := &spdy.PingFrame{Id: pid}
|
||||
startTime := time.Now()
|
||||
writeErr := s.framer.WriteFrame(frame)
|
||||
if writeErr != nil {
|
||||
return time.Duration(0), writeErr
|
||||
}
|
||||
select {
|
||||
case <-s.closeChan:
|
||||
return time.Duration(0), errors.New("connection closed")
|
||||
case err, ok := <-pingChan:
|
||||
if ok && err != nil {
|
||||
return time.Duration(0), err
|
||||
}
|
||||
break
|
||||
}
|
||||
return time.Now().Sub(startTime), nil
|
||||
}
|
||||
|
||||
// Serve handles frames sent from the server, including reply frames
|
||||
// which are needed to fully initiate connections. Both clients and servers
|
||||
// should call Serve in a separate goroutine before creating streams.
|
||||
func (s *Connection) Serve(newHandler StreamHandler) {
|
||||
// use a WaitGroup to wait for all frames to be drained after receiving
|
||||
// go-away.
|
||||
var wg sync.WaitGroup
|
||||
|
||||
// Parition queues to ensure stream frames are handled
|
||||
// by the same worker, ensuring order is maintained
|
||||
frameQueues := make([]*PriorityFrameQueue, FRAME_WORKERS)
|
||||
for i := 0; i < FRAME_WORKERS; i++ {
|
||||
frameQueues[i] = NewPriorityFrameQueue(QUEUE_SIZE)
|
||||
|
||||
// Ensure frame queue is drained when connection is closed
|
||||
go func(frameQueue *PriorityFrameQueue) {
|
||||
<-s.closeChan
|
||||
frameQueue.Drain()
|
||||
}(frameQueues[i])
|
||||
|
||||
wg.Add(1)
|
||||
go func(frameQueue *PriorityFrameQueue) {
|
||||
// let the WaitGroup know this worker is done
|
||||
defer wg.Done()
|
||||
|
||||
s.frameHandler(frameQueue, newHandler)
|
||||
}(frameQueues[i])
|
||||
}
|
||||
|
||||
var (
|
||||
partitionRoundRobin int
|
||||
goAwayFrame *spdy.GoAwayFrame
|
||||
)
|
||||
Loop:
|
||||
for {
|
||||
readFrame, err := s.framer.ReadFrame()
|
||||
if err != nil {
|
||||
if err != io.EOF {
|
||||
debugMessage("frame read error: %s", err)
|
||||
} else {
|
||||
debugMessage("(%p) EOF received", s)
|
||||
}
|
||||
break
|
||||
}
|
||||
var priority uint8
|
||||
var partition int
|
||||
switch frame := readFrame.(type) {
|
||||
case *spdy.SynStreamFrame:
|
||||
if s.checkStreamFrame(frame) {
|
||||
priority = frame.Priority
|
||||
partition = int(frame.StreamId % FRAME_WORKERS)
|
||||
debugMessage("(%p) Add stream frame: %d ", s, frame.StreamId)
|
||||
s.addStreamFrame(frame)
|
||||
} else {
|
||||
debugMessage("(%p) Rejected stream frame: %d ", s, frame.StreamId)
|
||||
continue
|
||||
}
|
||||
case *spdy.SynReplyFrame:
|
||||
priority = s.getStreamPriority(frame.StreamId)
|
||||
partition = int(frame.StreamId % FRAME_WORKERS)
|
||||
case *spdy.DataFrame:
|
||||
priority = s.getStreamPriority(frame.StreamId)
|
||||
partition = int(frame.StreamId % FRAME_WORKERS)
|
||||
case *spdy.RstStreamFrame:
|
||||
priority = s.getStreamPriority(frame.StreamId)
|
||||
partition = int(frame.StreamId % FRAME_WORKERS)
|
||||
case *spdy.HeadersFrame:
|
||||
priority = s.getStreamPriority(frame.StreamId)
|
||||
partition = int(frame.StreamId % FRAME_WORKERS)
|
||||
case *spdy.PingFrame:
|
||||
priority = 0
|
||||
partition = partitionRoundRobin
|
||||
partitionRoundRobin = (partitionRoundRobin + 1) % FRAME_WORKERS
|
||||
case *spdy.GoAwayFrame:
|
||||
// hold on to the go away frame and exit the loop
|
||||
goAwayFrame = frame
|
||||
break Loop
|
||||
default:
|
||||
priority = 7
|
||||
partition = partitionRoundRobin
|
||||
partitionRoundRobin = (partitionRoundRobin + 1) % FRAME_WORKERS
|
||||
}
|
||||
frameQueues[partition].Push(readFrame, priority)
|
||||
}
|
||||
close(s.closeChan)
|
||||
|
||||
// wait for all frame handler workers to indicate they've drained their queues
|
||||
// before handling the go away frame
|
||||
wg.Wait()
|
||||
|
||||
if goAwayFrame != nil {
|
||||
s.handleGoAwayFrame(goAwayFrame)
|
||||
}
|
||||
|
||||
// now it's safe to close remote channels and empty s.streams
|
||||
s.streamCond.L.Lock()
|
||||
// notify streams that they're now closed, which will
|
||||
// unblock any stream Read() calls
|
||||
for _, stream := range s.streams {
|
||||
stream.closeRemoteChannels()
|
||||
}
|
||||
s.streams = make(map[spdy.StreamId]*Stream)
|
||||
s.streamCond.Broadcast()
|
||||
s.streamCond.L.Unlock()
|
||||
}
|
||||
|
||||
func (s *Connection) frameHandler(frameQueue *PriorityFrameQueue, newHandler StreamHandler) {
|
||||
for {
|
||||
popFrame := frameQueue.Pop()
|
||||
if popFrame == nil {
|
||||
return
|
||||
}
|
||||
|
||||
var frameErr error
|
||||
switch frame := popFrame.(type) {
|
||||
case *spdy.SynStreamFrame:
|
||||
frameErr = s.handleStreamFrame(frame, newHandler)
|
||||
case *spdy.SynReplyFrame:
|
||||
frameErr = s.handleReplyFrame(frame)
|
||||
case *spdy.DataFrame:
|
||||
frameErr = s.dataFrameHandler(frame)
|
||||
case *spdy.RstStreamFrame:
|
||||
frameErr = s.handleResetFrame(frame)
|
||||
case *spdy.HeadersFrame:
|
||||
frameErr = s.handleHeaderFrame(frame)
|
||||
case *spdy.PingFrame:
|
||||
frameErr = s.handlePingFrame(frame)
|
||||
case *spdy.GoAwayFrame:
|
||||
frameErr = s.handleGoAwayFrame(frame)
|
||||
default:
|
||||
frameErr = fmt.Errorf("unhandled frame type: %T", frame)
|
||||
}
|
||||
|
||||
if frameErr != nil {
|
||||
debugMessage("frame handling error: %s", frameErr)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (s *Connection) getStreamPriority(streamId spdy.StreamId) uint8 {
|
||||
stream, streamOk := s.getStream(streamId)
|
||||
if !streamOk {
|
||||
return 7
|
||||
}
|
||||
return stream.priority
|
||||
}
|
||||
|
||||
func (s *Connection) addStreamFrame(frame *spdy.SynStreamFrame) {
|
||||
var parent *Stream
|
||||
if frame.AssociatedToStreamId != spdy.StreamId(0) {
|
||||
parent, _ = s.getStream(frame.AssociatedToStreamId)
|
||||
}
|
||||
|
||||
stream := &Stream{
|
||||
streamId: frame.StreamId,
|
||||
parent: parent,
|
||||
conn: s,
|
||||
startChan: make(chan error),
|
||||
headers: frame.Headers,
|
||||
finished: (frame.CFHeader.Flags & spdy.ControlFlagUnidirectional) != 0x00,
|
||||
replyCond: sync.NewCond(new(sync.Mutex)),
|
||||
dataChan: make(chan []byte),
|
||||
headerChan: make(chan http.Header),
|
||||
closeChan: make(chan bool),
|
||||
priority: frame.Priority,
|
||||
}
|
||||
if frame.CFHeader.Flags&spdy.ControlFlagFin != 0x00 {
|
||||
stream.closeRemoteChannels()
|
||||
}
|
||||
|
||||
s.addStream(stream)
|
||||
}
|
||||
|
||||
// checkStreamFrame checks to see if a stream frame is allowed.
|
||||
// If the stream is invalid, then a reset frame with protocol error
|
||||
// will be returned.
|
||||
func (s *Connection) checkStreamFrame(frame *spdy.SynStreamFrame) bool {
|
||||
s.receiveIdLock.Lock()
|
||||
defer s.receiveIdLock.Unlock()
|
||||
if s.goneAway {
|
||||
return false
|
||||
}
|
||||
validationErr := s.validateStreamId(frame.StreamId)
|
||||
if validationErr != nil {
|
||||
go func() {
|
||||
resetErr := s.sendResetFrame(spdy.ProtocolError, frame.StreamId)
|
||||
if resetErr != nil {
|
||||
debugMessage("reset error: %s", resetErr)
|
||||
}
|
||||
}()
|
||||
return false
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
func (s *Connection) handleStreamFrame(frame *spdy.SynStreamFrame, newHandler StreamHandler) error {
|
||||
stream, ok := s.getStream(frame.StreamId)
|
||||
if !ok {
|
||||
return fmt.Errorf("Missing stream: %d", frame.StreamId)
|
||||
}
|
||||
|
||||
newHandler(stream)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Connection) handleReplyFrame(frame *spdy.SynReplyFrame) error {
|
||||
debugMessage("(%p) Reply frame received for %d", s, frame.StreamId)
|
||||
stream, streamOk := s.getStream(frame.StreamId)
|
||||
if !streamOk {
|
||||
debugMessage("Reply frame gone away for %d", frame.StreamId)
|
||||
// Stream has already gone away
|
||||
return nil
|
||||
}
|
||||
if stream.replied {
|
||||
// Stream has already received reply
|
||||
return nil
|
||||
}
|
||||
stream.replied = true
|
||||
|
||||
// TODO Check for error
|
||||
if (frame.CFHeader.Flags & spdy.ControlFlagFin) != 0x00 {
|
||||
s.remoteStreamFinish(stream)
|
||||
}
|
||||
|
||||
close(stream.startChan)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Connection) handleResetFrame(frame *spdy.RstStreamFrame) error {
|
||||
stream, streamOk := s.getStream(frame.StreamId)
|
||||
if !streamOk {
|
||||
// Stream has already been removed
|
||||
return nil
|
||||
}
|
||||
s.removeStream(stream)
|
||||
stream.closeRemoteChannels()
|
||||
|
||||
if !stream.replied {
|
||||
stream.replied = true
|
||||
stream.startChan <- ErrReset
|
||||
close(stream.startChan)
|
||||
}
|
||||
|
||||
stream.finishLock.Lock()
|
||||
stream.finished = true
|
||||
stream.finishLock.Unlock()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Connection) handleHeaderFrame(frame *spdy.HeadersFrame) error {
|
||||
stream, streamOk := s.getStream(frame.StreamId)
|
||||
if !streamOk {
|
||||
// Stream has already gone away
|
||||
return nil
|
||||
}
|
||||
if !stream.replied {
|
||||
// No reply received...Protocol error?
|
||||
return nil
|
||||
}
|
||||
|
||||
// TODO limit headers while not blocking (use buffered chan or goroutine?)
|
||||
select {
|
||||
case <-stream.closeChan:
|
||||
return nil
|
||||
case stream.headerChan <- frame.Headers:
|
||||
}
|
||||
|
||||
if (frame.CFHeader.Flags & spdy.ControlFlagFin) != 0x00 {
|
||||
s.remoteStreamFinish(stream)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Connection) handleDataFrame(frame *spdy.DataFrame) error {
|
||||
debugMessage("(%p) Data frame received for %d", s, frame.StreamId)
|
||||
stream, streamOk := s.getStream(frame.StreamId)
|
||||
if !streamOk {
|
||||
debugMessage("(%p) Data frame gone away for %d", s, frame.StreamId)
|
||||
// Stream has already gone away
|
||||
return nil
|
||||
}
|
||||
if !stream.replied {
|
||||
debugMessage("(%p) Data frame not replied %d", s, frame.StreamId)
|
||||
// No reply received...Protocol error?
|
||||
return nil
|
||||
}
|
||||
|
||||
debugMessage("(%p) (%d) Data frame handling", stream, stream.streamId)
|
||||
if len(frame.Data) > 0 {
|
||||
stream.dataLock.RLock()
|
||||
select {
|
||||
case <-stream.closeChan:
|
||||
debugMessage("(%p) (%d) Data frame not sent (stream shut down)", stream, stream.streamId)
|
||||
case stream.dataChan <- frame.Data:
|
||||
debugMessage("(%p) (%d) Data frame sent", stream, stream.streamId)
|
||||
}
|
||||
stream.dataLock.RUnlock()
|
||||
}
|
||||
if (frame.Flags & spdy.DataFlagFin) != 0x00 {
|
||||
s.remoteStreamFinish(stream)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Connection) handlePingFrame(frame *spdy.PingFrame) error {
|
||||
if s.pingId&0x01 != frame.Id&0x01 {
|
||||
return s.framer.WriteFrame(frame)
|
||||
}
|
||||
pingChan, pingOk := s.pingChans[frame.Id]
|
||||
if pingOk {
|
||||
close(pingChan)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Connection) handleGoAwayFrame(frame *spdy.GoAwayFrame) error {
|
||||
debugMessage("(%p) Go away received", s)
|
||||
s.receiveIdLock.Lock()
|
||||
if s.goneAway {
|
||||
s.receiveIdLock.Unlock()
|
||||
return nil
|
||||
}
|
||||
s.goneAway = true
|
||||
s.receiveIdLock.Unlock()
|
||||
|
||||
if s.lastStreamChan != nil {
|
||||
stream, _ := s.getStream(frame.LastGoodStreamId)
|
||||
go func() {
|
||||
s.lastStreamChan <- stream
|
||||
}()
|
||||
}
|
||||
|
||||
// Do not block frame handler waiting for closure
|
||||
go s.shutdown(s.goAwayTimeout)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Connection) remoteStreamFinish(stream *Stream) {
|
||||
stream.closeRemoteChannels()
|
||||
|
||||
stream.finishLock.Lock()
|
||||
if stream.finished {
|
||||
// Stream is fully closed, cleanup
|
||||
s.removeStream(stream)
|
||||
}
|
||||
stream.finishLock.Unlock()
|
||||
}
|
||||
|
||||
// CreateStream creates a new spdy stream using the parameters for
|
||||
// creating the stream frame. The stream frame will be sent upon
|
||||
// calling this function, however this function does not wait for
|
||||
// the reply frame. If waiting for the reply is desired, use
|
||||
// the stream Wait or WaitTimeout function on the stream returned
|
||||
// by this function.
|
||||
func (s *Connection) CreateStream(headers http.Header, parent *Stream, fin bool) (*Stream, error) {
|
||||
// MUST synchronize stream creation (all the way to writing the frame)
|
||||
// as stream IDs **MUST** increase monotonically.
|
||||
s.nextIdLock.Lock()
|
||||
defer s.nextIdLock.Unlock()
|
||||
|
||||
streamId := s.getNextStreamId()
|
||||
if streamId == 0 {
|
||||
return nil, fmt.Errorf("Unable to get new stream id")
|
||||
}
|
||||
|
||||
stream := &Stream{
|
||||
streamId: streamId,
|
||||
parent: parent,
|
||||
conn: s,
|
||||
startChan: make(chan error),
|
||||
headers: headers,
|
||||
dataChan: make(chan []byte),
|
||||
headerChan: make(chan http.Header),
|
||||
closeChan: make(chan bool),
|
||||
}
|
||||
|
||||
debugMessage("(%p) (%p) Create stream", s, stream)
|
||||
|
||||
s.addStream(stream)
|
||||
|
||||
return stream, s.sendStream(stream, fin)
|
||||
}
|
||||
|
||||
func (s *Connection) shutdown(closeTimeout time.Duration) {
|
||||
// TODO Ensure this isn't called multiple times
|
||||
s.shutdownLock.Lock()
|
||||
if s.hasShutdown {
|
||||
s.shutdownLock.Unlock()
|
||||
return
|
||||
}
|
||||
s.hasShutdown = true
|
||||
s.shutdownLock.Unlock()
|
||||
|
||||
var timeout <-chan time.Time
|
||||
if closeTimeout > time.Duration(0) {
|
||||
timeout = time.After(closeTimeout)
|
||||
}
|
||||
streamsClosed := make(chan bool)
|
||||
|
||||
go func() {
|
||||
s.streamCond.L.Lock()
|
||||
for len(s.streams) > 0 {
|
||||
debugMessage("Streams opened: %d, %#v", len(s.streams), s.streams)
|
||||
s.streamCond.Wait()
|
||||
}
|
||||
s.streamCond.L.Unlock()
|
||||
close(streamsClosed)
|
||||
}()
|
||||
|
||||
var err error
|
||||
select {
|
||||
case <-streamsClosed:
|
||||
// No active streams, close should be safe
|
||||
err = s.conn.Close()
|
||||
case <-timeout:
|
||||
// Force ungraceful close
|
||||
err = s.conn.Close()
|
||||
// Wait for cleanup to clear active streams
|
||||
<-streamsClosed
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
duration := 10 * time.Minute
|
||||
time.AfterFunc(duration, func() {
|
||||
select {
|
||||
case err, ok := <-s.shutdownChan:
|
||||
if ok {
|
||||
debugMessage("Unhandled close error after %s: %s", duration, err)
|
||||
}
|
||||
default:
|
||||
}
|
||||
})
|
||||
s.shutdownChan <- err
|
||||
}
|
||||
close(s.shutdownChan)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// Closes spdy connection by sending GoAway frame and initiating shutdown
|
||||
func (s *Connection) Close() error {
|
||||
s.receiveIdLock.Lock()
|
||||
if s.goneAway {
|
||||
s.receiveIdLock.Unlock()
|
||||
return nil
|
||||
}
|
||||
s.goneAway = true
|
||||
s.receiveIdLock.Unlock()
|
||||
|
||||
var lastStreamId spdy.StreamId
|
||||
if s.receivedStreamId > 2 {
|
||||
lastStreamId = s.receivedStreamId - 2
|
||||
}
|
||||
|
||||
goAwayFrame := &spdy.GoAwayFrame{
|
||||
LastGoodStreamId: lastStreamId,
|
||||
Status: spdy.GoAwayOK,
|
||||
}
|
||||
|
||||
err := s.framer.WriteFrame(goAwayFrame)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
go s.shutdown(s.closeTimeout)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// CloseWait closes the connection and waits for shutdown
|
||||
// to finish. Note the underlying network Connection
|
||||
// is not closed until the end of shutdown.
|
||||
func (s *Connection) CloseWait() error {
|
||||
closeErr := s.Close()
|
||||
if closeErr != nil {
|
||||
return closeErr
|
||||
}
|
||||
shutdownErr, ok := <-s.shutdownChan
|
||||
if ok {
|
||||
return shutdownErr
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Wait waits for the connection to finish shutdown or for
|
||||
// the wait timeout duration to expire. This needs to be
|
||||
// called either after Close has been called or the GOAWAYFRAME
|
||||
// has been received. If the wait timeout is 0, this function
|
||||
// will block until shutdown finishes. If wait is never called
|
||||
// and a shutdown error occurs, that error will be logged as an
|
||||
// unhandled error.
|
||||
func (s *Connection) Wait(waitTimeout time.Duration) error {
|
||||
var timeout <-chan time.Time
|
||||
if waitTimeout > time.Duration(0) {
|
||||
timeout = time.After(waitTimeout)
|
||||
}
|
||||
|
||||
select {
|
||||
case err, ok := <-s.shutdownChan:
|
||||
if ok {
|
||||
return err
|
||||
}
|
||||
case <-timeout:
|
||||
return ErrTimeout
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// NotifyClose registers a channel to be called when the remote
|
||||
// peer inidicates connection closure. The last stream to be
|
||||
// received by the remote will be sent on the channel. The notify
|
||||
// timeout will determine the duration between go away received
|
||||
// and the connection being closed.
|
||||
func (s *Connection) NotifyClose(c chan<- *Stream, timeout time.Duration) {
|
||||
s.goAwayTimeout = timeout
|
||||
s.lastStreamChan = c
|
||||
}
|
||||
|
||||
// SetCloseTimeout sets the amount of time close will wait for
|
||||
// streams to finish before terminating the underlying network
|
||||
// connection. Setting the timeout to 0 will cause close to
|
||||
// wait forever, which is the default.
|
||||
func (s *Connection) SetCloseTimeout(timeout time.Duration) {
|
||||
s.closeTimeout = timeout
|
||||
}
|
||||
|
||||
// SetIdleTimeout sets the amount of time the connection may sit idle before
|
||||
// it is forcefully terminated.
|
||||
func (s *Connection) SetIdleTimeout(timeout time.Duration) {
|
||||
s.framer.setIdleTimeout(timeout)
|
||||
}
|
||||
|
||||
func (s *Connection) sendHeaders(headers http.Header, stream *Stream, fin bool) error {
|
||||
var flags spdy.ControlFlags
|
||||
if fin {
|
||||
flags = spdy.ControlFlagFin
|
||||
}
|
||||
|
||||
headerFrame := &spdy.HeadersFrame{
|
||||
StreamId: stream.streamId,
|
||||
Headers: headers,
|
||||
CFHeader: spdy.ControlFrameHeader{Flags: flags},
|
||||
}
|
||||
|
||||
return s.framer.WriteFrame(headerFrame)
|
||||
}
|
||||
|
||||
func (s *Connection) sendReply(headers http.Header, stream *Stream, fin bool) error {
|
||||
var flags spdy.ControlFlags
|
||||
if fin {
|
||||
flags = spdy.ControlFlagFin
|
||||
}
|
||||
|
||||
replyFrame := &spdy.SynReplyFrame{
|
||||
StreamId: stream.streamId,
|
||||
Headers: headers,
|
||||
CFHeader: spdy.ControlFrameHeader{Flags: flags},
|
||||
}
|
||||
|
||||
return s.framer.WriteFrame(replyFrame)
|
||||
}
|
||||
|
||||
func (s *Connection) sendResetFrame(status spdy.RstStreamStatus, streamId spdy.StreamId) error {
|
||||
resetFrame := &spdy.RstStreamFrame{
|
||||
StreamId: streamId,
|
||||
Status: status,
|
||||
}
|
||||
|
||||
return s.framer.WriteFrame(resetFrame)
|
||||
}
|
||||
|
||||
func (s *Connection) sendReset(status spdy.RstStreamStatus, stream *Stream) error {
|
||||
return s.sendResetFrame(status, stream.streamId)
|
||||
}
|
||||
|
||||
func (s *Connection) sendStream(stream *Stream, fin bool) error {
|
||||
var flags spdy.ControlFlags
|
||||
if fin {
|
||||
flags = spdy.ControlFlagFin
|
||||
stream.finished = true
|
||||
}
|
||||
|
||||
var parentId spdy.StreamId
|
||||
if stream.parent != nil {
|
||||
parentId = stream.parent.streamId
|
||||
}
|
||||
|
||||
streamFrame := &spdy.SynStreamFrame{
|
||||
StreamId: spdy.StreamId(stream.streamId),
|
||||
AssociatedToStreamId: spdy.StreamId(parentId),
|
||||
Headers: stream.headers,
|
||||
CFHeader: spdy.ControlFrameHeader{Flags: flags},
|
||||
}
|
||||
|
||||
return s.framer.WriteFrame(streamFrame)
|
||||
}
|
||||
|
||||
// getNextStreamId returns the next sequential id
|
||||
// every call should produce a unique value or an error
|
||||
func (s *Connection) getNextStreamId() spdy.StreamId {
|
||||
sid := s.nextStreamId
|
||||
if sid > 0x7fffffff {
|
||||
return 0
|
||||
}
|
||||
s.nextStreamId = s.nextStreamId + 2
|
||||
return sid
|
||||
}
|
||||
|
||||
// PeekNextStreamId returns the next sequential id and keeps the next id untouched
|
||||
func (s *Connection) PeekNextStreamId() spdy.StreamId {
|
||||
sid := s.nextStreamId
|
||||
return sid
|
||||
}
|
||||
|
||||
func (s *Connection) validateStreamId(rid spdy.StreamId) error {
|
||||
if rid > 0x7fffffff || rid < s.receivedStreamId {
|
||||
return ErrInvalidStreamId
|
||||
}
|
||||
s.receivedStreamId = rid + 2
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Connection) addStream(stream *Stream) {
|
||||
s.streamCond.L.Lock()
|
||||
s.streams[stream.streamId] = stream
|
||||
debugMessage("(%p) (%p) Stream added, broadcasting: %d", s, stream, stream.streamId)
|
||||
s.streamCond.Broadcast()
|
||||
s.streamCond.L.Unlock()
|
||||
}
|
||||
|
||||
func (s *Connection) removeStream(stream *Stream) {
|
||||
s.streamCond.L.Lock()
|
||||
delete(s.streams, stream.streamId)
|
||||
debugMessage("(%p) (%p) Stream removed, broadcasting: %d", s, stream, stream.streamId)
|
||||
s.streamCond.Broadcast()
|
||||
s.streamCond.L.Unlock()
|
||||
}
|
||||
|
||||
func (s *Connection) getStream(streamId spdy.StreamId) (stream *Stream, ok bool) {
|
||||
s.streamLock.RLock()
|
||||
stream, ok = s.streams[streamId]
|
||||
s.streamLock.RUnlock()
|
||||
return
|
||||
}
|
||||
|
||||
// FindStream looks up the given stream id and either waits for the
|
||||
// stream to be found or returns nil if the stream id is no longer
|
||||
// valid.
|
||||
func (s *Connection) FindStream(streamId uint32) *Stream {
|
||||
var stream *Stream
|
||||
var ok bool
|
||||
s.streamCond.L.Lock()
|
||||
stream, ok = s.streams[spdy.StreamId(streamId)]
|
||||
debugMessage("(%p) Found stream %d? %t", s, spdy.StreamId(streamId), ok)
|
||||
for !ok && streamId >= uint32(s.receivedStreamId) {
|
||||
s.streamCond.Wait()
|
||||
stream, ok = s.streams[spdy.StreamId(streamId)]
|
||||
}
|
||||
s.streamCond.L.Unlock()
|
||||
return stream
|
||||
}
|
||||
|
||||
func (s *Connection) CloseChan() <-chan bool {
|
||||
return s.closeChan
|
||||
}
|
||||
|
|
@ -0,0 +1,36 @@
|
|||
package spdystream
|
||||
|
||||
import (
|
||||
"io"
|
||||
"net/http"
|
||||
)
|
||||
|
||||
// MirrorStreamHandler mirrors all streams.
|
||||
func MirrorStreamHandler(stream *Stream) {
|
||||
replyErr := stream.SendReply(http.Header{}, false)
|
||||
if replyErr != nil {
|
||||
return
|
||||
}
|
||||
|
||||
go func() {
|
||||
io.Copy(stream, stream)
|
||||
stream.Close()
|
||||
}()
|
||||
go func() {
|
||||
for {
|
||||
header, receiveErr := stream.ReceiveHeader()
|
||||
if receiveErr != nil {
|
||||
return
|
||||
}
|
||||
sendErr := stream.SendHeader(header, false)
|
||||
if sendErr != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
}()
|
||||
}
|
||||
|
||||
// NoopStreamHandler does nothing when stream connects.
|
||||
func NoOpStreamHandler(stream *Stream) {
|
||||
stream.SendReply(http.Header{}, false)
|
||||
}
|
||||
|
|
@ -0,0 +1,98 @@
|
|||
package spdystream
|
||||
|
||||
import (
|
||||
"container/heap"
|
||||
"sync"
|
||||
|
||||
"github.com/docker/spdystream/spdy"
|
||||
)
|
||||
|
||||
type prioritizedFrame struct {
|
||||
frame spdy.Frame
|
||||
priority uint8
|
||||
insertId uint64
|
||||
}
|
||||
|
||||
type frameQueue []*prioritizedFrame
|
||||
|
||||
func (fq frameQueue) Len() int {
|
||||
return len(fq)
|
||||
}
|
||||
|
||||
func (fq frameQueue) Less(i, j int) bool {
|
||||
if fq[i].priority == fq[j].priority {
|
||||
return fq[i].insertId < fq[j].insertId
|
||||
}
|
||||
return fq[i].priority < fq[j].priority
|
||||
}
|
||||
|
||||
func (fq frameQueue) Swap(i, j int) {
|
||||
fq[i], fq[j] = fq[j], fq[i]
|
||||
}
|
||||
|
||||
func (fq *frameQueue) Push(x interface{}) {
|
||||
*fq = append(*fq, x.(*prioritizedFrame))
|
||||
}
|
||||
|
||||
func (fq *frameQueue) Pop() interface{} {
|
||||
old := *fq
|
||||
n := len(old)
|
||||
*fq = old[0 : n-1]
|
||||
return old[n-1]
|
||||
}
|
||||
|
||||
type PriorityFrameQueue struct {
|
||||
queue *frameQueue
|
||||
c *sync.Cond
|
||||
size int
|
||||
nextInsertId uint64
|
||||
drain bool
|
||||
}
|
||||
|
||||
func NewPriorityFrameQueue(size int) *PriorityFrameQueue {
|
||||
queue := make(frameQueue, 0, size)
|
||||
heap.Init(&queue)
|
||||
|
||||
return &PriorityFrameQueue{
|
||||
queue: &queue,
|
||||
size: size,
|
||||
c: sync.NewCond(&sync.Mutex{}),
|
||||
}
|
||||
}
|
||||
|
||||
func (q *PriorityFrameQueue) Push(frame spdy.Frame, priority uint8) {
|
||||
q.c.L.Lock()
|
||||
defer q.c.L.Unlock()
|
||||
for q.queue.Len() >= q.size {
|
||||
q.c.Wait()
|
||||
}
|
||||
pFrame := &prioritizedFrame{
|
||||
frame: frame,
|
||||
priority: priority,
|
||||
insertId: q.nextInsertId,
|
||||
}
|
||||
q.nextInsertId = q.nextInsertId + 1
|
||||
heap.Push(q.queue, pFrame)
|
||||
q.c.Signal()
|
||||
}
|
||||
|
||||
func (q *PriorityFrameQueue) Pop() spdy.Frame {
|
||||
q.c.L.Lock()
|
||||
defer q.c.L.Unlock()
|
||||
for q.queue.Len() == 0 {
|
||||
if q.drain {
|
||||
return nil
|
||||
}
|
||||
q.c.Wait()
|
||||
}
|
||||
frame := heap.Pop(q.queue).(*prioritizedFrame).frame
|
||||
q.c.Signal()
|
||||
return frame
|
||||
}
|
||||
|
||||
func (q *PriorityFrameQueue) Drain() {
|
||||
q.c.L.Lock()
|
||||
defer q.c.L.Unlock()
|
||||
q.drain = true
|
||||
q.c.Broadcast()
|
||||
}
|
||||
|
|
@ -0,0 +1,187 @@
|
|||
// Copyright 2013 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package spdy
|
||||
|
||||
// headerDictionary is the dictionary sent to the zlib compressor/decompressor.
|
||||
var headerDictionary = []byte{
|
||||
0x00, 0x00, 0x00, 0x07, 0x6f, 0x70, 0x74, 0x69,
|
||||
0x6f, 0x6e, 0x73, 0x00, 0x00, 0x00, 0x04, 0x68,
|
||||
0x65, 0x61, 0x64, 0x00, 0x00, 0x00, 0x04, 0x70,
|
||||
0x6f, 0x73, 0x74, 0x00, 0x00, 0x00, 0x03, 0x70,
|
||||
0x75, 0x74, 0x00, 0x00, 0x00, 0x06, 0x64, 0x65,
|
||||
0x6c, 0x65, 0x74, 0x65, 0x00, 0x00, 0x00, 0x05,
|
||||
0x74, 0x72, 0x61, 0x63, 0x65, 0x00, 0x00, 0x00,
|
||||
0x06, 0x61, 0x63, 0x63, 0x65, 0x70, 0x74, 0x00,
|
||||
0x00, 0x00, 0x0e, 0x61, 0x63, 0x63, 0x65, 0x70,
|
||||
0x74, 0x2d, 0x63, 0x68, 0x61, 0x72, 0x73, 0x65,
|
||||
0x74, 0x00, 0x00, 0x00, 0x0f, 0x61, 0x63, 0x63,
|
||||
0x65, 0x70, 0x74, 0x2d, 0x65, 0x6e, 0x63, 0x6f,
|
||||
0x64, 0x69, 0x6e, 0x67, 0x00, 0x00, 0x00, 0x0f,
|
||||
0x61, 0x63, 0x63, 0x65, 0x70, 0x74, 0x2d, 0x6c,
|
||||
0x61, 0x6e, 0x67, 0x75, 0x61, 0x67, 0x65, 0x00,
|
||||
0x00, 0x00, 0x0d, 0x61, 0x63, 0x63, 0x65, 0x70,
|
||||
0x74, 0x2d, 0x72, 0x61, 0x6e, 0x67, 0x65, 0x73,
|
||||
0x00, 0x00, 0x00, 0x03, 0x61, 0x67, 0x65, 0x00,
|
||||
0x00, 0x00, 0x05, 0x61, 0x6c, 0x6c, 0x6f, 0x77,
|
||||
0x00, 0x00, 0x00, 0x0d, 0x61, 0x75, 0x74, 0x68,
|
||||
0x6f, 0x72, 0x69, 0x7a, 0x61, 0x74, 0x69, 0x6f,
|
||||
0x6e, 0x00, 0x00, 0x00, 0x0d, 0x63, 0x61, 0x63,
|
||||
0x68, 0x65, 0x2d, 0x63, 0x6f, 0x6e, 0x74, 0x72,
|
||||
0x6f, 0x6c, 0x00, 0x00, 0x00, 0x0a, 0x63, 0x6f,
|
||||
0x6e, 0x6e, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e,
|
||||
0x00, 0x00, 0x00, 0x0c, 0x63, 0x6f, 0x6e, 0x74,
|
||||
0x65, 0x6e, 0x74, 0x2d, 0x62, 0x61, 0x73, 0x65,
|
||||
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|
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|
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|
||||
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|
||||
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|
||||
0x2c, 0x65, 0x6e, 0x71, 0x3d, 0x30, 0x2e,
|
||||
}
|
||||
|
|
@ -0,0 +1,348 @@
|
|||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package spdy
|
||||
|
||||
import (
|
||||
"compress/zlib"
|
||||
"encoding/binary"
|
||||
"io"
|
||||
"net/http"
|
||||
"strings"
|
||||
)
|
||||
|
||||
func (frame *SynStreamFrame) read(h ControlFrameHeader, f *Framer) error {
|
||||
return f.readSynStreamFrame(h, frame)
|
||||
}
|
||||
|
||||
func (frame *SynReplyFrame) read(h ControlFrameHeader, f *Framer) error {
|
||||
return f.readSynReplyFrame(h, frame)
|
||||
}
|
||||
|
||||
func (frame *RstStreamFrame) read(h ControlFrameHeader, f *Framer) error {
|
||||
frame.CFHeader = h
|
||||
if err := binary.Read(f.r, binary.BigEndian, &frame.StreamId); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := binary.Read(f.r, binary.BigEndian, &frame.Status); err != nil {
|
||||
return err
|
||||
}
|
||||
if frame.Status == 0 {
|
||||
return &Error{InvalidControlFrame, frame.StreamId}
|
||||
}
|
||||
if frame.StreamId == 0 {
|
||||
return &Error{ZeroStreamId, 0}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (frame *SettingsFrame) read(h ControlFrameHeader, f *Framer) error {
|
||||
frame.CFHeader = h
|
||||
var numSettings uint32
|
||||
if err := binary.Read(f.r, binary.BigEndian, &numSettings); err != nil {
|
||||
return err
|
||||
}
|
||||
frame.FlagIdValues = make([]SettingsFlagIdValue, numSettings)
|
||||
for i := uint32(0); i < numSettings; i++ {
|
||||
if err := binary.Read(f.r, binary.BigEndian, &frame.FlagIdValues[i].Id); err != nil {
|
||||
return err
|
||||
}
|
||||
frame.FlagIdValues[i].Flag = SettingsFlag((frame.FlagIdValues[i].Id & 0xff000000) >> 24)
|
||||
frame.FlagIdValues[i].Id &= 0xffffff
|
||||
if err := binary.Read(f.r, binary.BigEndian, &frame.FlagIdValues[i].Value); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (frame *PingFrame) read(h ControlFrameHeader, f *Framer) error {
|
||||
frame.CFHeader = h
|
||||
if err := binary.Read(f.r, binary.BigEndian, &frame.Id); err != nil {
|
||||
return err
|
||||
}
|
||||
if frame.Id == 0 {
|
||||
return &Error{ZeroStreamId, 0}
|
||||
}
|
||||
if frame.CFHeader.Flags != 0 {
|
||||
return &Error{InvalidControlFrame, StreamId(frame.Id)}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (frame *GoAwayFrame) read(h ControlFrameHeader, f *Framer) error {
|
||||
frame.CFHeader = h
|
||||
if err := binary.Read(f.r, binary.BigEndian, &frame.LastGoodStreamId); err != nil {
|
||||
return err
|
||||
}
|
||||
if frame.CFHeader.Flags != 0 {
|
||||
return &Error{InvalidControlFrame, frame.LastGoodStreamId}
|
||||
}
|
||||
if frame.CFHeader.length != 8 {
|
||||
return &Error{InvalidControlFrame, frame.LastGoodStreamId}
|
||||
}
|
||||
if err := binary.Read(f.r, binary.BigEndian, &frame.Status); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (frame *HeadersFrame) read(h ControlFrameHeader, f *Framer) error {
|
||||
return f.readHeadersFrame(h, frame)
|
||||
}
|
||||
|
||||
func (frame *WindowUpdateFrame) read(h ControlFrameHeader, f *Framer) error {
|
||||
frame.CFHeader = h
|
||||
if err := binary.Read(f.r, binary.BigEndian, &frame.StreamId); err != nil {
|
||||
return err
|
||||
}
|
||||
if frame.CFHeader.Flags != 0 {
|
||||
return &Error{InvalidControlFrame, frame.StreamId}
|
||||
}
|
||||
if frame.CFHeader.length != 8 {
|
||||
return &Error{InvalidControlFrame, frame.StreamId}
|
||||
}
|
||||
if err := binary.Read(f.r, binary.BigEndian, &frame.DeltaWindowSize); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func newControlFrame(frameType ControlFrameType) (controlFrame, error) {
|
||||
ctor, ok := cframeCtor[frameType]
|
||||
if !ok {
|
||||
return nil, &Error{Err: InvalidControlFrame}
|
||||
}
|
||||
return ctor(), nil
|
||||
}
|
||||
|
||||
var cframeCtor = map[ControlFrameType]func() controlFrame{
|
||||
TypeSynStream: func() controlFrame { return new(SynStreamFrame) },
|
||||
TypeSynReply: func() controlFrame { return new(SynReplyFrame) },
|
||||
TypeRstStream: func() controlFrame { return new(RstStreamFrame) },
|
||||
TypeSettings: func() controlFrame { return new(SettingsFrame) },
|
||||
TypePing: func() controlFrame { return new(PingFrame) },
|
||||
TypeGoAway: func() controlFrame { return new(GoAwayFrame) },
|
||||
TypeHeaders: func() controlFrame { return new(HeadersFrame) },
|
||||
TypeWindowUpdate: func() controlFrame { return new(WindowUpdateFrame) },
|
||||
}
|
||||
|
||||
func (f *Framer) uncorkHeaderDecompressor(payloadSize int64) error {
|
||||
if f.headerDecompressor != nil {
|
||||
f.headerReader.N = payloadSize
|
||||
return nil
|
||||
}
|
||||
f.headerReader = io.LimitedReader{R: f.r, N: payloadSize}
|
||||
decompressor, err := zlib.NewReaderDict(&f.headerReader, []byte(headerDictionary))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
f.headerDecompressor = decompressor
|
||||
return nil
|
||||
}
|
||||
|
||||
// ReadFrame reads SPDY encoded data and returns a decompressed Frame.
|
||||
func (f *Framer) ReadFrame() (Frame, error) {
|
||||
var firstWord uint32
|
||||
if err := binary.Read(f.r, binary.BigEndian, &firstWord); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if firstWord&0x80000000 != 0 {
|
||||
frameType := ControlFrameType(firstWord & 0xffff)
|
||||
version := uint16(firstWord >> 16 & 0x7fff)
|
||||
return f.parseControlFrame(version, frameType)
|
||||
}
|
||||
return f.parseDataFrame(StreamId(firstWord & 0x7fffffff))
|
||||
}
|
||||
|
||||
func (f *Framer) parseControlFrame(version uint16, frameType ControlFrameType) (Frame, error) {
|
||||
var length uint32
|
||||
if err := binary.Read(f.r, binary.BigEndian, &length); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
flags := ControlFlags((length & 0xff000000) >> 24)
|
||||
length &= 0xffffff
|
||||
header := ControlFrameHeader{version, frameType, flags, length}
|
||||
cframe, err := newControlFrame(frameType)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if err = cframe.read(header, f); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return cframe, nil
|
||||
}
|
||||
|
||||
func parseHeaderValueBlock(r io.Reader, streamId StreamId) (http.Header, error) {
|
||||
var numHeaders uint32
|
||||
if err := binary.Read(r, binary.BigEndian, &numHeaders); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var e error
|
||||
h := make(http.Header, int(numHeaders))
|
||||
for i := 0; i < int(numHeaders); i++ {
|
||||
var length uint32
|
||||
if err := binary.Read(r, binary.BigEndian, &length); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
nameBytes := make([]byte, length)
|
||||
if _, err := io.ReadFull(r, nameBytes); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
name := string(nameBytes)
|
||||
if name != strings.ToLower(name) {
|
||||
e = &Error{UnlowercasedHeaderName, streamId}
|
||||
name = strings.ToLower(name)
|
||||
}
|
||||
if h[name] != nil {
|
||||
e = &Error{DuplicateHeaders, streamId}
|
||||
}
|
||||
if err := binary.Read(r, binary.BigEndian, &length); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
value := make([]byte, length)
|
||||
if _, err := io.ReadFull(r, value); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
valueList := strings.Split(string(value), headerValueSeparator)
|
||||
for _, v := range valueList {
|
||||
h.Add(name, v)
|
||||
}
|
||||
}
|
||||
if e != nil {
|
||||
return h, e
|
||||
}
|
||||
return h, nil
|
||||
}
|
||||
|
||||
func (f *Framer) readSynStreamFrame(h ControlFrameHeader, frame *SynStreamFrame) error {
|
||||
frame.CFHeader = h
|
||||
var err error
|
||||
if err = binary.Read(f.r, binary.BigEndian, &frame.StreamId); err != nil {
|
||||
return err
|
||||
}
|
||||
if err = binary.Read(f.r, binary.BigEndian, &frame.AssociatedToStreamId); err != nil {
|
||||
return err
|
||||
}
|
||||
if err = binary.Read(f.r, binary.BigEndian, &frame.Priority); err != nil {
|
||||
return err
|
||||
}
|
||||
frame.Priority >>= 5
|
||||
if err = binary.Read(f.r, binary.BigEndian, &frame.Slot); err != nil {
|
||||
return err
|
||||
}
|
||||
reader := f.r
|
||||
if !f.headerCompressionDisabled {
|
||||
err := f.uncorkHeaderDecompressor(int64(h.length - 10))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
reader = f.headerDecompressor
|
||||
}
|
||||
frame.Headers, err = parseHeaderValueBlock(reader, frame.StreamId)
|
||||
if !f.headerCompressionDisabled && (err == io.EOF && f.headerReader.N == 0 || f.headerReader.N != 0) {
|
||||
err = &Error{WrongCompressedPayloadSize, 0}
|
||||
}
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for h := range frame.Headers {
|
||||
if invalidReqHeaders[h] {
|
||||
return &Error{InvalidHeaderPresent, frame.StreamId}
|
||||
}
|
||||
}
|
||||
if frame.StreamId == 0 {
|
||||
return &Error{ZeroStreamId, 0}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (f *Framer) readSynReplyFrame(h ControlFrameHeader, frame *SynReplyFrame) error {
|
||||
frame.CFHeader = h
|
||||
var err error
|
||||
if err = binary.Read(f.r, binary.BigEndian, &frame.StreamId); err != nil {
|
||||
return err
|
||||
}
|
||||
reader := f.r
|
||||
if !f.headerCompressionDisabled {
|
||||
err := f.uncorkHeaderDecompressor(int64(h.length - 4))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
reader = f.headerDecompressor
|
||||
}
|
||||
frame.Headers, err = parseHeaderValueBlock(reader, frame.StreamId)
|
||||
if !f.headerCompressionDisabled && (err == io.EOF && f.headerReader.N == 0 || f.headerReader.N != 0) {
|
||||
err = &Error{WrongCompressedPayloadSize, 0}
|
||||
}
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for h := range frame.Headers {
|
||||
if invalidRespHeaders[h] {
|
||||
return &Error{InvalidHeaderPresent, frame.StreamId}
|
||||
}
|
||||
}
|
||||
if frame.StreamId == 0 {
|
||||
return &Error{ZeroStreamId, 0}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (f *Framer) readHeadersFrame(h ControlFrameHeader, frame *HeadersFrame) error {
|
||||
frame.CFHeader = h
|
||||
var err error
|
||||
if err = binary.Read(f.r, binary.BigEndian, &frame.StreamId); err != nil {
|
||||
return err
|
||||
}
|
||||
reader := f.r
|
||||
if !f.headerCompressionDisabled {
|
||||
err := f.uncorkHeaderDecompressor(int64(h.length - 4))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
reader = f.headerDecompressor
|
||||
}
|
||||
frame.Headers, err = parseHeaderValueBlock(reader, frame.StreamId)
|
||||
if !f.headerCompressionDisabled && (err == io.EOF && f.headerReader.N == 0 || f.headerReader.N != 0) {
|
||||
err = &Error{WrongCompressedPayloadSize, 0}
|
||||
}
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
var invalidHeaders map[string]bool
|
||||
if frame.StreamId%2 == 0 {
|
||||
invalidHeaders = invalidReqHeaders
|
||||
} else {
|
||||
invalidHeaders = invalidRespHeaders
|
||||
}
|
||||
for h := range frame.Headers {
|
||||
if invalidHeaders[h] {
|
||||
return &Error{InvalidHeaderPresent, frame.StreamId}
|
||||
}
|
||||
}
|
||||
if frame.StreamId == 0 {
|
||||
return &Error{ZeroStreamId, 0}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (f *Framer) parseDataFrame(streamId StreamId) (*DataFrame, error) {
|
||||
var length uint32
|
||||
if err := binary.Read(f.r, binary.BigEndian, &length); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var frame DataFrame
|
||||
frame.StreamId = streamId
|
||||
frame.Flags = DataFlags(length >> 24)
|
||||
length &= 0xffffff
|
||||
frame.Data = make([]byte, length)
|
||||
if _, err := io.ReadFull(f.r, frame.Data); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if frame.StreamId == 0 {
|
||||
return nil, &Error{ZeroStreamId, 0}
|
||||
}
|
||||
return &frame, nil
|
||||
}
|
||||
|
|
@ -0,0 +1,275 @@
|
|||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// Package spdy implements the SPDY protocol (currently SPDY/3), described in
|
||||
// http://www.chromium.org/spdy/spdy-protocol/spdy-protocol-draft3.
|
||||
package spdy
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"compress/zlib"
|
||||
"io"
|
||||
"net/http"
|
||||
)
|
||||
|
||||
// Version is the protocol version number that this package implements.
|
||||
const Version = 3
|
||||
|
||||
// ControlFrameType stores the type field in a control frame header.
|
||||
type ControlFrameType uint16
|
||||
|
||||
const (
|
||||
TypeSynStream ControlFrameType = 0x0001
|
||||
TypeSynReply = 0x0002
|
||||
TypeRstStream = 0x0003
|
||||
TypeSettings = 0x0004
|
||||
TypePing = 0x0006
|
||||
TypeGoAway = 0x0007
|
||||
TypeHeaders = 0x0008
|
||||
TypeWindowUpdate = 0x0009
|
||||
)
|
||||
|
||||
// ControlFlags are the flags that can be set on a control frame.
|
||||
type ControlFlags uint8
|
||||
|
||||
const (
|
||||
ControlFlagFin ControlFlags = 0x01
|
||||
ControlFlagUnidirectional = 0x02
|
||||
ControlFlagSettingsClearSettings = 0x01
|
||||
)
|
||||
|
||||
// DataFlags are the flags that can be set on a data frame.
|
||||
type DataFlags uint8
|
||||
|
||||
const (
|
||||
DataFlagFin DataFlags = 0x01
|
||||
)
|
||||
|
||||
// MaxDataLength is the maximum number of bytes that can be stored in one frame.
|
||||
const MaxDataLength = 1<<24 - 1
|
||||
|
||||
// headerValueSepator separates multiple header values.
|
||||
const headerValueSeparator = "\x00"
|
||||
|
||||
// Frame is a single SPDY frame in its unpacked in-memory representation. Use
|
||||
// Framer to read and write it.
|
||||
type Frame interface {
|
||||
write(f *Framer) error
|
||||
}
|
||||
|
||||
// ControlFrameHeader contains all the fields in a control frame header,
|
||||
// in its unpacked in-memory representation.
|
||||
type ControlFrameHeader struct {
|
||||
// Note, high bit is the "Control" bit.
|
||||
version uint16 // spdy version number
|
||||
frameType ControlFrameType
|
||||
Flags ControlFlags
|
||||
length uint32 // length of data field
|
||||
}
|
||||
|
||||
type controlFrame interface {
|
||||
Frame
|
||||
read(h ControlFrameHeader, f *Framer) error
|
||||
}
|
||||
|
||||
// StreamId represents a 31-bit value identifying the stream.
|
||||
type StreamId uint32
|
||||
|
||||
// SynStreamFrame is the unpacked, in-memory representation of a SYN_STREAM
|
||||
// frame.
|
||||
type SynStreamFrame struct {
|
||||
CFHeader ControlFrameHeader
|
||||
StreamId StreamId
|
||||
AssociatedToStreamId StreamId // stream id for a stream which this stream is associated to
|
||||
Priority uint8 // priority of this frame (3-bit)
|
||||
Slot uint8 // index in the server's credential vector of the client certificate
|
||||
Headers http.Header
|
||||
}
|
||||
|
||||
// SynReplyFrame is the unpacked, in-memory representation of a SYN_REPLY frame.
|
||||
type SynReplyFrame struct {
|
||||
CFHeader ControlFrameHeader
|
||||
StreamId StreamId
|
||||
Headers http.Header
|
||||
}
|
||||
|
||||
// RstStreamStatus represents the status that led to a RST_STREAM.
|
||||
type RstStreamStatus uint32
|
||||
|
||||
const (
|
||||
ProtocolError RstStreamStatus = iota + 1
|
||||
InvalidStream
|
||||
RefusedStream
|
||||
UnsupportedVersion
|
||||
Cancel
|
||||
InternalError
|
||||
FlowControlError
|
||||
StreamInUse
|
||||
StreamAlreadyClosed
|
||||
InvalidCredentials
|
||||
FrameTooLarge
|
||||
)
|
||||
|
||||
// RstStreamFrame is the unpacked, in-memory representation of a RST_STREAM
|
||||
// frame.
|
||||
type RstStreamFrame struct {
|
||||
CFHeader ControlFrameHeader
|
||||
StreamId StreamId
|
||||
Status RstStreamStatus
|
||||
}
|
||||
|
||||
// SettingsFlag represents a flag in a SETTINGS frame.
|
||||
type SettingsFlag uint8
|
||||
|
||||
const (
|
||||
FlagSettingsPersistValue SettingsFlag = 0x1
|
||||
FlagSettingsPersisted = 0x2
|
||||
)
|
||||
|
||||
// SettingsFlag represents the id of an id/value pair in a SETTINGS frame.
|
||||
type SettingsId uint32
|
||||
|
||||
const (
|
||||
SettingsUploadBandwidth SettingsId = iota + 1
|
||||
SettingsDownloadBandwidth
|
||||
SettingsRoundTripTime
|
||||
SettingsMaxConcurrentStreams
|
||||
SettingsCurrentCwnd
|
||||
SettingsDownloadRetransRate
|
||||
SettingsInitialWindowSize
|
||||
SettingsClientCretificateVectorSize
|
||||
)
|
||||
|
||||
// SettingsFlagIdValue is the unpacked, in-memory representation of the
|
||||
// combined flag/id/value for a setting in a SETTINGS frame.
|
||||
type SettingsFlagIdValue struct {
|
||||
Flag SettingsFlag
|
||||
Id SettingsId
|
||||
Value uint32
|
||||
}
|
||||
|
||||
// SettingsFrame is the unpacked, in-memory representation of a SPDY
|
||||
// SETTINGS frame.
|
||||
type SettingsFrame struct {
|
||||
CFHeader ControlFrameHeader
|
||||
FlagIdValues []SettingsFlagIdValue
|
||||
}
|
||||
|
||||
// PingFrame is the unpacked, in-memory representation of a PING frame.
|
||||
type PingFrame struct {
|
||||
CFHeader ControlFrameHeader
|
||||
Id uint32 // unique id for this ping, from server is even, from client is odd.
|
||||
}
|
||||
|
||||
// GoAwayStatus represents the status in a GoAwayFrame.
|
||||
type GoAwayStatus uint32
|
||||
|
||||
const (
|
||||
GoAwayOK GoAwayStatus = iota
|
||||
GoAwayProtocolError
|
||||
GoAwayInternalError
|
||||
)
|
||||
|
||||
// GoAwayFrame is the unpacked, in-memory representation of a GOAWAY frame.
|
||||
type GoAwayFrame struct {
|
||||
CFHeader ControlFrameHeader
|
||||
LastGoodStreamId StreamId // last stream id which was accepted by sender
|
||||
Status GoAwayStatus
|
||||
}
|
||||
|
||||
// HeadersFrame is the unpacked, in-memory representation of a HEADERS frame.
|
||||
type HeadersFrame struct {
|
||||
CFHeader ControlFrameHeader
|
||||
StreamId StreamId
|
||||
Headers http.Header
|
||||
}
|
||||
|
||||
// WindowUpdateFrame is the unpacked, in-memory representation of a
|
||||
// WINDOW_UPDATE frame.
|
||||
type WindowUpdateFrame struct {
|
||||
CFHeader ControlFrameHeader
|
||||
StreamId StreamId
|
||||
DeltaWindowSize uint32 // additional number of bytes to existing window size
|
||||
}
|
||||
|
||||
// TODO: Implement credential frame and related methods.
|
||||
|
||||
// DataFrame is the unpacked, in-memory representation of a DATA frame.
|
||||
type DataFrame struct {
|
||||
// Note, high bit is the "Control" bit. Should be 0 for data frames.
|
||||
StreamId StreamId
|
||||
Flags DataFlags
|
||||
Data []byte // payload data of this frame
|
||||
}
|
||||
|
||||
// A SPDY specific error.
|
||||
type ErrorCode string
|
||||
|
||||
const (
|
||||
UnlowercasedHeaderName ErrorCode = "header was not lowercased"
|
||||
DuplicateHeaders = "multiple headers with same name"
|
||||
WrongCompressedPayloadSize = "compressed payload size was incorrect"
|
||||
UnknownFrameType = "unknown frame type"
|
||||
InvalidControlFrame = "invalid control frame"
|
||||
InvalidDataFrame = "invalid data frame"
|
||||
InvalidHeaderPresent = "frame contained invalid header"
|
||||
ZeroStreamId = "stream id zero is disallowed"
|
||||
)
|
||||
|
||||
// Error contains both the type of error and additional values. StreamId is 0
|
||||
// if Error is not associated with a stream.
|
||||
type Error struct {
|
||||
Err ErrorCode
|
||||
StreamId StreamId
|
||||
}
|
||||
|
||||
func (e *Error) Error() string {
|
||||
return string(e.Err)
|
||||
}
|
||||
|
||||
var invalidReqHeaders = map[string]bool{
|
||||
"Connection": true,
|
||||
"Host": true,
|
||||
"Keep-Alive": true,
|
||||
"Proxy-Connection": true,
|
||||
"Transfer-Encoding": true,
|
||||
}
|
||||
|
||||
var invalidRespHeaders = map[string]bool{
|
||||
"Connection": true,
|
||||
"Keep-Alive": true,
|
||||
"Proxy-Connection": true,
|
||||
"Transfer-Encoding": true,
|
||||
}
|
||||
|
||||
// Framer handles serializing/deserializing SPDY frames, including compressing/
|
||||
// decompressing payloads.
|
||||
type Framer struct {
|
||||
headerCompressionDisabled bool
|
||||
w io.Writer
|
||||
headerBuf *bytes.Buffer
|
||||
headerCompressor *zlib.Writer
|
||||
r io.Reader
|
||||
headerReader io.LimitedReader
|
||||
headerDecompressor io.ReadCloser
|
||||
}
|
||||
|
||||
// NewFramer allocates a new Framer for a given SPDY connection, represented by
|
||||
// a io.Writer and io.Reader. Note that Framer will read and write individual fields
|
||||
// from/to the Reader and Writer, so the caller should pass in an appropriately
|
||||
// buffered implementation to optimize performance.
|
||||
func NewFramer(w io.Writer, r io.Reader) (*Framer, error) {
|
||||
compressBuf := new(bytes.Buffer)
|
||||
compressor, err := zlib.NewWriterLevelDict(compressBuf, zlib.BestCompression, []byte(headerDictionary))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
framer := &Framer{
|
||||
w: w,
|
||||
headerBuf: compressBuf,
|
||||
headerCompressor: compressor,
|
||||
r: r,
|
||||
}
|
||||
return framer, nil
|
||||
}
|
||||
|
|
@ -0,0 +1,318 @@
|
|||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package spdy
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"io"
|
||||
"net/http"
|
||||
"strings"
|
||||
)
|
||||
|
||||
func (frame *SynStreamFrame) write(f *Framer) error {
|
||||
return f.writeSynStreamFrame(frame)
|
||||
}
|
||||
|
||||
func (frame *SynReplyFrame) write(f *Framer) error {
|
||||
return f.writeSynReplyFrame(frame)
|
||||
}
|
||||
|
||||
func (frame *RstStreamFrame) write(f *Framer) (err error) {
|
||||
if frame.StreamId == 0 {
|
||||
return &Error{ZeroStreamId, 0}
|
||||
}
|
||||
frame.CFHeader.version = Version
|
||||
frame.CFHeader.frameType = TypeRstStream
|
||||
frame.CFHeader.Flags = 0
|
||||
frame.CFHeader.length = 8
|
||||
|
||||
// Serialize frame to Writer.
|
||||
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
||||
return
|
||||
}
|
||||
if err = binary.Write(f.w, binary.BigEndian, frame.StreamId); err != nil {
|
||||
return
|
||||
}
|
||||
if frame.Status == 0 {
|
||||
return &Error{InvalidControlFrame, frame.StreamId}
|
||||
}
|
||||
if err = binary.Write(f.w, binary.BigEndian, frame.Status); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (frame *SettingsFrame) write(f *Framer) (err error) {
|
||||
frame.CFHeader.version = Version
|
||||
frame.CFHeader.frameType = TypeSettings
|
||||
frame.CFHeader.length = uint32(len(frame.FlagIdValues)*8 + 4)
|
||||
|
||||
// Serialize frame to Writer.
|
||||
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
||||
return
|
||||
}
|
||||
if err = binary.Write(f.w, binary.BigEndian, uint32(len(frame.FlagIdValues))); err != nil {
|
||||
return
|
||||
}
|
||||
for _, flagIdValue := range frame.FlagIdValues {
|
||||
flagId := uint32(flagIdValue.Flag)<<24 | uint32(flagIdValue.Id)
|
||||
if err = binary.Write(f.w, binary.BigEndian, flagId); err != nil {
|
||||
return
|
||||
}
|
||||
if err = binary.Write(f.w, binary.BigEndian, flagIdValue.Value); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (frame *PingFrame) write(f *Framer) (err error) {
|
||||
if frame.Id == 0 {
|
||||
return &Error{ZeroStreamId, 0}
|
||||
}
|
||||
frame.CFHeader.version = Version
|
||||
frame.CFHeader.frameType = TypePing
|
||||
frame.CFHeader.Flags = 0
|
||||
frame.CFHeader.length = 4
|
||||
|
||||
// Serialize frame to Writer.
|
||||
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
||||
return
|
||||
}
|
||||
if err = binary.Write(f.w, binary.BigEndian, frame.Id); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (frame *GoAwayFrame) write(f *Framer) (err error) {
|
||||
frame.CFHeader.version = Version
|
||||
frame.CFHeader.frameType = TypeGoAway
|
||||
frame.CFHeader.Flags = 0
|
||||
frame.CFHeader.length = 8
|
||||
|
||||
// Serialize frame to Writer.
|
||||
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
||||
return
|
||||
}
|
||||
if err = binary.Write(f.w, binary.BigEndian, frame.LastGoodStreamId); err != nil {
|
||||
return
|
||||
}
|
||||
if err = binary.Write(f.w, binary.BigEndian, frame.Status); err != nil {
|
||||
return
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (frame *HeadersFrame) write(f *Framer) error {
|
||||
return f.writeHeadersFrame(frame)
|
||||
}
|
||||
|
||||
func (frame *WindowUpdateFrame) write(f *Framer) (err error) {
|
||||
frame.CFHeader.version = Version
|
||||
frame.CFHeader.frameType = TypeWindowUpdate
|
||||
frame.CFHeader.Flags = 0
|
||||
frame.CFHeader.length = 8
|
||||
|
||||
// Serialize frame to Writer.
|
||||
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
||||
return
|
||||
}
|
||||
if err = binary.Write(f.w, binary.BigEndian, frame.StreamId); err != nil {
|
||||
return
|
||||
}
|
||||
if err = binary.Write(f.w, binary.BigEndian, frame.DeltaWindowSize); err != nil {
|
||||
return
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (frame *DataFrame) write(f *Framer) error {
|
||||
return f.writeDataFrame(frame)
|
||||
}
|
||||
|
||||
// WriteFrame writes a frame.
|
||||
func (f *Framer) WriteFrame(frame Frame) error {
|
||||
return frame.write(f)
|
||||
}
|
||||
|
||||
func writeControlFrameHeader(w io.Writer, h ControlFrameHeader) error {
|
||||
if err := binary.Write(w, binary.BigEndian, 0x8000|h.version); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := binary.Write(w, binary.BigEndian, h.frameType); err != nil {
|
||||
return err
|
||||
}
|
||||
flagsAndLength := uint32(h.Flags)<<24 | h.length
|
||||
if err := binary.Write(w, binary.BigEndian, flagsAndLength); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func writeHeaderValueBlock(w io.Writer, h http.Header) (n int, err error) {
|
||||
n = 0
|
||||
if err = binary.Write(w, binary.BigEndian, uint32(len(h))); err != nil {
|
||||
return
|
||||
}
|
||||
n += 2
|
||||
for name, values := range h {
|
||||
if err = binary.Write(w, binary.BigEndian, uint32(len(name))); err != nil {
|
||||
return
|
||||
}
|
||||
n += 2
|
||||
name = strings.ToLower(name)
|
||||
if _, err = io.WriteString(w, name); err != nil {
|
||||
return
|
||||
}
|
||||
n += len(name)
|
||||
v := strings.Join(values, headerValueSeparator)
|
||||
if err = binary.Write(w, binary.BigEndian, uint32(len(v))); err != nil {
|
||||
return
|
||||
}
|
||||
n += 2
|
||||
if _, err = io.WriteString(w, v); err != nil {
|
||||
return
|
||||
}
|
||||
n += len(v)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (f *Framer) writeSynStreamFrame(frame *SynStreamFrame) (err error) {
|
||||
if frame.StreamId == 0 {
|
||||
return &Error{ZeroStreamId, 0}
|
||||
}
|
||||
// Marshal the headers.
|
||||
var writer io.Writer = f.headerBuf
|
||||
if !f.headerCompressionDisabled {
|
||||
writer = f.headerCompressor
|
||||
}
|
||||
if _, err = writeHeaderValueBlock(writer, frame.Headers); err != nil {
|
||||
return
|
||||
}
|
||||
if !f.headerCompressionDisabled {
|
||||
f.headerCompressor.Flush()
|
||||
}
|
||||
|
||||
// Set ControlFrameHeader.
|
||||
frame.CFHeader.version = Version
|
||||
frame.CFHeader.frameType = TypeSynStream
|
||||
frame.CFHeader.length = uint32(len(f.headerBuf.Bytes()) + 10)
|
||||
|
||||
// Serialize frame to Writer.
|
||||
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
||||
return err
|
||||
}
|
||||
if err = binary.Write(f.w, binary.BigEndian, frame.StreamId); err != nil {
|
||||
return err
|
||||
}
|
||||
if err = binary.Write(f.w, binary.BigEndian, frame.AssociatedToStreamId); err != nil {
|
||||
return err
|
||||
}
|
||||
if err = binary.Write(f.w, binary.BigEndian, frame.Priority<<5); err != nil {
|
||||
return err
|
||||
}
|
||||
if err = binary.Write(f.w, binary.BigEndian, frame.Slot); err != nil {
|
||||
return err
|
||||
}
|
||||
if _, err = f.w.Write(f.headerBuf.Bytes()); err != nil {
|
||||
return err
|
||||
}
|
||||
f.headerBuf.Reset()
|
||||
return nil
|
||||
}
|
||||
|
||||
func (f *Framer) writeSynReplyFrame(frame *SynReplyFrame) (err error) {
|
||||
if frame.StreamId == 0 {
|
||||
return &Error{ZeroStreamId, 0}
|
||||
}
|
||||
// Marshal the headers.
|
||||
var writer io.Writer = f.headerBuf
|
||||
if !f.headerCompressionDisabled {
|
||||
writer = f.headerCompressor
|
||||
}
|
||||
if _, err = writeHeaderValueBlock(writer, frame.Headers); err != nil {
|
||||
return
|
||||
}
|
||||
if !f.headerCompressionDisabled {
|
||||
f.headerCompressor.Flush()
|
||||
}
|
||||
|
||||
// Set ControlFrameHeader.
|
||||
frame.CFHeader.version = Version
|
||||
frame.CFHeader.frameType = TypeSynReply
|
||||
frame.CFHeader.length = uint32(len(f.headerBuf.Bytes()) + 4)
|
||||
|
||||
// Serialize frame to Writer.
|
||||
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
||||
return
|
||||
}
|
||||
if err = binary.Write(f.w, binary.BigEndian, frame.StreamId); err != nil {
|
||||
return
|
||||
}
|
||||
if _, err = f.w.Write(f.headerBuf.Bytes()); err != nil {
|
||||
return
|
||||
}
|
||||
f.headerBuf.Reset()
|
||||
return
|
||||
}
|
||||
|
||||
func (f *Framer) writeHeadersFrame(frame *HeadersFrame) (err error) {
|
||||
if frame.StreamId == 0 {
|
||||
return &Error{ZeroStreamId, 0}
|
||||
}
|
||||
// Marshal the headers.
|
||||
var writer io.Writer = f.headerBuf
|
||||
if !f.headerCompressionDisabled {
|
||||
writer = f.headerCompressor
|
||||
}
|
||||
if _, err = writeHeaderValueBlock(writer, frame.Headers); err != nil {
|
||||
return
|
||||
}
|
||||
if !f.headerCompressionDisabled {
|
||||
f.headerCompressor.Flush()
|
||||
}
|
||||
|
||||
// Set ControlFrameHeader.
|
||||
frame.CFHeader.version = Version
|
||||
frame.CFHeader.frameType = TypeHeaders
|
||||
frame.CFHeader.length = uint32(len(f.headerBuf.Bytes()) + 4)
|
||||
|
||||
// Serialize frame to Writer.
|
||||
if err = writeControlFrameHeader(f.w, frame.CFHeader); err != nil {
|
||||
return
|
||||
}
|
||||
if err = binary.Write(f.w, binary.BigEndian, frame.StreamId); err != nil {
|
||||
return
|
||||
}
|
||||
if _, err = f.w.Write(f.headerBuf.Bytes()); err != nil {
|
||||
return
|
||||
}
|
||||
f.headerBuf.Reset()
|
||||
return
|
||||
}
|
||||
|
||||
func (f *Framer) writeDataFrame(frame *DataFrame) (err error) {
|
||||
if frame.StreamId == 0 {
|
||||
return &Error{ZeroStreamId, 0}
|
||||
}
|
||||
if frame.StreamId&0x80000000 != 0 || len(frame.Data) > MaxDataLength {
|
||||
return &Error{InvalidDataFrame, frame.StreamId}
|
||||
}
|
||||
|
||||
// Serialize frame to Writer.
|
||||
if err = binary.Write(f.w, binary.BigEndian, frame.StreamId); err != nil {
|
||||
return
|
||||
}
|
||||
flagsAndLength := uint32(frame.Flags)<<24 | uint32(len(frame.Data))
|
||||
if err = binary.Write(f.w, binary.BigEndian, flagsAndLength); err != nil {
|
||||
return
|
||||
}
|
||||
if _, err = f.w.Write(frame.Data); err != nil {
|
||||
return
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,327 @@
|
|||
package spdystream
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"net"
|
||||
"net/http"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/docker/spdystream/spdy"
|
||||
)
|
||||
|
||||
var (
|
||||
ErrUnreadPartialData = errors.New("unread partial data")
|
||||
)
|
||||
|
||||
type Stream struct {
|
||||
streamId spdy.StreamId
|
||||
parent *Stream
|
||||
conn *Connection
|
||||
startChan chan error
|
||||
|
||||
dataLock sync.RWMutex
|
||||
dataChan chan []byte
|
||||
unread []byte
|
||||
|
||||
priority uint8
|
||||
headers http.Header
|
||||
headerChan chan http.Header
|
||||
finishLock sync.Mutex
|
||||
finished bool
|
||||
replyCond *sync.Cond
|
||||
replied bool
|
||||
closeLock sync.Mutex
|
||||
closeChan chan bool
|
||||
}
|
||||
|
||||
// WriteData writes data to stream, sending a dataframe per call
|
||||
func (s *Stream) WriteData(data []byte, fin bool) error {
|
||||
s.waitWriteReply()
|
||||
var flags spdy.DataFlags
|
||||
|
||||
if fin {
|
||||
flags = spdy.DataFlagFin
|
||||
s.finishLock.Lock()
|
||||
if s.finished {
|
||||
s.finishLock.Unlock()
|
||||
return ErrWriteClosedStream
|
||||
}
|
||||
s.finished = true
|
||||
s.finishLock.Unlock()
|
||||
}
|
||||
|
||||
dataFrame := &spdy.DataFrame{
|
||||
StreamId: s.streamId,
|
||||
Flags: flags,
|
||||
Data: data,
|
||||
}
|
||||
|
||||
debugMessage("(%p) (%d) Writing data frame", s, s.streamId)
|
||||
return s.conn.framer.WriteFrame(dataFrame)
|
||||
}
|
||||
|
||||
// Write writes bytes to a stream, calling write data for each call.
|
||||
func (s *Stream) Write(data []byte) (n int, err error) {
|
||||
err = s.WriteData(data, false)
|
||||
if err == nil {
|
||||
n = len(data)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// Read reads bytes from a stream, a single read will never get more
|
||||
// than what is sent on a single data frame, but a multiple calls to
|
||||
// read may get data from the same data frame.
|
||||
func (s *Stream) Read(p []byte) (n int, err error) {
|
||||
if s.unread == nil {
|
||||
select {
|
||||
case <-s.closeChan:
|
||||
return 0, io.EOF
|
||||
case read, ok := <-s.dataChan:
|
||||
if !ok {
|
||||
return 0, io.EOF
|
||||
}
|
||||
s.unread = read
|
||||
}
|
||||
}
|
||||
n = copy(p, s.unread)
|
||||
if n < len(s.unread) {
|
||||
s.unread = s.unread[n:]
|
||||
} else {
|
||||
s.unread = nil
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// ReadData reads an entire data frame and returns the byte array
|
||||
// from the data frame. If there is unread data from the result
|
||||
// of a Read call, this function will return an ErrUnreadPartialData.
|
||||
func (s *Stream) ReadData() ([]byte, error) {
|
||||
debugMessage("(%p) Reading data from %d", s, s.streamId)
|
||||
if s.unread != nil {
|
||||
return nil, ErrUnreadPartialData
|
||||
}
|
||||
select {
|
||||
case <-s.closeChan:
|
||||
return nil, io.EOF
|
||||
case read, ok := <-s.dataChan:
|
||||
if !ok {
|
||||
return nil, io.EOF
|
||||
}
|
||||
return read, nil
|
||||
}
|
||||
}
|
||||
|
||||
func (s *Stream) waitWriteReply() {
|
||||
if s.replyCond != nil {
|
||||
s.replyCond.L.Lock()
|
||||
for !s.replied {
|
||||
s.replyCond.Wait()
|
||||
}
|
||||
s.replyCond.L.Unlock()
|
||||
}
|
||||
}
|
||||
|
||||
// Wait waits for the stream to receive a reply.
|
||||
func (s *Stream) Wait() error {
|
||||
return s.WaitTimeout(time.Duration(0))
|
||||
}
|
||||
|
||||
// WaitTimeout waits for the stream to receive a reply or for timeout.
|
||||
// When the timeout is reached, ErrTimeout will be returned.
|
||||
func (s *Stream) WaitTimeout(timeout time.Duration) error {
|
||||
var timeoutChan <-chan time.Time
|
||||
if timeout > time.Duration(0) {
|
||||
timeoutChan = time.After(timeout)
|
||||
}
|
||||
|
||||
select {
|
||||
case err := <-s.startChan:
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
break
|
||||
case <-timeoutChan:
|
||||
return ErrTimeout
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Close closes the stream by sending an empty data frame with the
|
||||
// finish flag set, indicating this side is finished with the stream.
|
||||
func (s *Stream) Close() error {
|
||||
select {
|
||||
case <-s.closeChan:
|
||||
// Stream is now fully closed
|
||||
s.conn.removeStream(s)
|
||||
default:
|
||||
break
|
||||
}
|
||||
return s.WriteData([]byte{}, true)
|
||||
}
|
||||
|
||||
// Reset sends a reset frame, putting the stream into the fully closed state.
|
||||
func (s *Stream) Reset() error {
|
||||
s.conn.removeStream(s)
|
||||
return s.resetStream()
|
||||
}
|
||||
|
||||
func (s *Stream) resetStream() error {
|
||||
// Always call closeRemoteChannels, even if s.finished is already true.
|
||||
// This makes it so that stream.Close() followed by stream.Reset() allows
|
||||
// stream.Read() to unblock.
|
||||
s.closeRemoteChannels()
|
||||
|
||||
s.finishLock.Lock()
|
||||
if s.finished {
|
||||
s.finishLock.Unlock()
|
||||
return nil
|
||||
}
|
||||
s.finished = true
|
||||
s.finishLock.Unlock()
|
||||
|
||||
resetFrame := &spdy.RstStreamFrame{
|
||||
StreamId: s.streamId,
|
||||
Status: spdy.Cancel,
|
||||
}
|
||||
return s.conn.framer.WriteFrame(resetFrame)
|
||||
}
|
||||
|
||||
// CreateSubStream creates a stream using the current as the parent
|
||||
func (s *Stream) CreateSubStream(headers http.Header, fin bool) (*Stream, error) {
|
||||
return s.conn.CreateStream(headers, s, fin)
|
||||
}
|
||||
|
||||
// SetPriority sets the stream priority, does not affect the
|
||||
// remote priority of this stream after Open has been called.
|
||||
// Valid values are 0 through 7, 0 being the highest priority
|
||||
// and 7 the lowest.
|
||||
func (s *Stream) SetPriority(priority uint8) {
|
||||
s.priority = priority
|
||||
}
|
||||
|
||||
// SendHeader sends a header frame across the stream
|
||||
func (s *Stream) SendHeader(headers http.Header, fin bool) error {
|
||||
return s.conn.sendHeaders(headers, s, fin)
|
||||
}
|
||||
|
||||
// SendReply sends a reply on a stream, only valid to be called once
|
||||
// when handling a new stream
|
||||
func (s *Stream) SendReply(headers http.Header, fin bool) error {
|
||||
if s.replyCond == nil {
|
||||
return errors.New("cannot reply on initiated stream")
|
||||
}
|
||||
s.replyCond.L.Lock()
|
||||
defer s.replyCond.L.Unlock()
|
||||
if s.replied {
|
||||
return nil
|
||||
}
|
||||
|
||||
err := s.conn.sendReply(headers, s, fin)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
s.replied = true
|
||||
s.replyCond.Broadcast()
|
||||
return nil
|
||||
}
|
||||
|
||||
// Refuse sends a reset frame with the status refuse, only
|
||||
// valid to be called once when handling a new stream. This
|
||||
// may be used to indicate that a stream is not allowed
|
||||
// when http status codes are not being used.
|
||||
func (s *Stream) Refuse() error {
|
||||
if s.replied {
|
||||
return nil
|
||||
}
|
||||
s.replied = true
|
||||
return s.conn.sendReset(spdy.RefusedStream, s)
|
||||
}
|
||||
|
||||
// Cancel sends a reset frame with the status canceled. This
|
||||
// can be used at any time by the creator of the Stream to
|
||||
// indicate the stream is no longer needed.
|
||||
func (s *Stream) Cancel() error {
|
||||
return s.conn.sendReset(spdy.Cancel, s)
|
||||
}
|
||||
|
||||
// ReceiveHeader receives a header sent on the other side
|
||||
// of the stream. This function will block until a header
|
||||
// is received or stream is closed.
|
||||
func (s *Stream) ReceiveHeader() (http.Header, error) {
|
||||
select {
|
||||
case <-s.closeChan:
|
||||
break
|
||||
case header, ok := <-s.headerChan:
|
||||
if !ok {
|
||||
return nil, fmt.Errorf("header chan closed")
|
||||
}
|
||||
return header, nil
|
||||
}
|
||||
return nil, fmt.Errorf("stream closed")
|
||||
}
|
||||
|
||||
// Parent returns the parent stream
|
||||
func (s *Stream) Parent() *Stream {
|
||||
return s.parent
|
||||
}
|
||||
|
||||
// Headers returns the headers used to create the stream
|
||||
func (s *Stream) Headers() http.Header {
|
||||
return s.headers
|
||||
}
|
||||
|
||||
// String returns the string version of stream using the
|
||||
// streamId to uniquely identify the stream
|
||||
func (s *Stream) String() string {
|
||||
return fmt.Sprintf("stream:%d", s.streamId)
|
||||
}
|
||||
|
||||
// Identifier returns a 32 bit identifier for the stream
|
||||
func (s *Stream) Identifier() uint32 {
|
||||
return uint32(s.streamId)
|
||||
}
|
||||
|
||||
// IsFinished returns whether the stream has finished
|
||||
// sending data
|
||||
func (s *Stream) IsFinished() bool {
|
||||
return s.finished
|
||||
}
|
||||
|
||||
// Implement net.Conn interface
|
||||
|
||||
func (s *Stream) LocalAddr() net.Addr {
|
||||
return s.conn.conn.LocalAddr()
|
||||
}
|
||||
|
||||
func (s *Stream) RemoteAddr() net.Addr {
|
||||
return s.conn.conn.RemoteAddr()
|
||||
}
|
||||
|
||||
// TODO set per stream values instead of connection-wide
|
||||
|
||||
func (s *Stream) SetDeadline(t time.Time) error {
|
||||
return s.conn.conn.SetDeadline(t)
|
||||
}
|
||||
|
||||
func (s *Stream) SetReadDeadline(t time.Time) error {
|
||||
return s.conn.conn.SetReadDeadline(t)
|
||||
}
|
||||
|
||||
func (s *Stream) SetWriteDeadline(t time.Time) error {
|
||||
return s.conn.conn.SetWriteDeadline(t)
|
||||
}
|
||||
|
||||
func (s *Stream) closeRemoteChannels() {
|
||||
s.closeLock.Lock()
|
||||
defer s.closeLock.Unlock()
|
||||
select {
|
||||
case <-s.closeChan:
|
||||
default:
|
||||
close(s.closeChan)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
package spdystream
|
||||
|
||||
import (
|
||||
"log"
|
||||
"os"
|
||||
)
|
||||
|
||||
var (
|
||||
DEBUG = os.Getenv("DEBUG")
|
||||
)
|
||||
|
||||
func debugMessage(fmt string, args ...interface{}) {
|
||||
if DEBUG != "" {
|
||||
log.Printf(fmt, args...)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,19 @@
|
|||
/*
|
||||
Copyright 2015 The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
// Package httpstream adds multiplexed streaming support to HTTP requests and
|
||||
// responses via connection upgrades.
|
||||
package httpstream // import "k8s.io/apimachinery/pkg/util/httpstream"
|
||||
149
vendor/k8s.io/apimachinery/pkg/util/httpstream/httpstream.go
сгенерированный
поставляемый
Normal file
149
vendor/k8s.io/apimachinery/pkg/util/httpstream/httpstream.go
сгенерированный
поставляемый
Normal file
|
|
@ -0,0 +1,149 @@
|
|||
/*
|
||||
Copyright 2015 The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package httpstream
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"net/http"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
const (
|
||||
HeaderConnection = "Connection"
|
||||
HeaderUpgrade = "Upgrade"
|
||||
HeaderProtocolVersion = "X-Stream-Protocol-Version"
|
||||
HeaderAcceptedProtocolVersions = "X-Accepted-Stream-Protocol-Versions"
|
||||
)
|
||||
|
||||
// NewStreamHandler defines a function that is called when a new Stream is
|
||||
// received. If no error is returned, the Stream is accepted; otherwise,
|
||||
// the stream is rejected. After the reply frame has been sent, replySent is closed.
|
||||
type NewStreamHandler func(stream Stream, replySent <-chan struct{}) error
|
||||
|
||||
// NoOpNewStreamHandler is a stream handler that accepts a new stream and
|
||||
// performs no other logic.
|
||||
func NoOpNewStreamHandler(stream Stream, replySent <-chan struct{}) error { return nil }
|
||||
|
||||
// Dialer knows how to open a streaming connection to a server.
|
||||
type Dialer interface {
|
||||
|
||||
// Dial opens a streaming connection to a server using one of the protocols
|
||||
// specified (in order of most preferred to least preferred).
|
||||
Dial(protocols ...string) (Connection, string, error)
|
||||
}
|
||||
|
||||
// UpgradeRoundTripper is a type of http.RoundTripper that is able to upgrade
|
||||
// HTTP requests to support multiplexed bidirectional streams. After RoundTrip()
|
||||
// is invoked, if the upgrade is successful, clients may retrieve the upgraded
|
||||
// connection by calling UpgradeRoundTripper.Connection().
|
||||
type UpgradeRoundTripper interface {
|
||||
http.RoundTripper
|
||||
// NewConnection validates the response and creates a new Connection.
|
||||
NewConnection(resp *http.Response) (Connection, error)
|
||||
}
|
||||
|
||||
// ResponseUpgrader knows how to upgrade HTTP requests and responses to
|
||||
// add streaming support to them.
|
||||
type ResponseUpgrader interface {
|
||||
// UpgradeResponse upgrades an HTTP response to one that supports multiplexed
|
||||
// streams. newStreamHandler will be called asynchronously whenever the
|
||||
// other end of the upgraded connection creates a new stream.
|
||||
UpgradeResponse(w http.ResponseWriter, req *http.Request, newStreamHandler NewStreamHandler) Connection
|
||||
}
|
||||
|
||||
// Connection represents an upgraded HTTP connection.
|
||||
type Connection interface {
|
||||
// CreateStream creates a new Stream with the supplied headers.
|
||||
CreateStream(headers http.Header) (Stream, error)
|
||||
// Close resets all streams and closes the connection.
|
||||
Close() error
|
||||
// CloseChan returns a channel that is closed when the underlying connection is closed.
|
||||
CloseChan() <-chan bool
|
||||
// SetIdleTimeout sets the amount of time the connection may remain idle before
|
||||
// it is automatically closed.
|
||||
SetIdleTimeout(timeout time.Duration)
|
||||
}
|
||||
|
||||
// Stream represents a bidirectional communications channel that is part of an
|
||||
// upgraded connection.
|
||||
type Stream interface {
|
||||
io.ReadWriteCloser
|
||||
// Reset closes both directions of the stream, indicating that neither client
|
||||
// or server can use it any more.
|
||||
Reset() error
|
||||
// Headers returns the headers used to create the stream.
|
||||
Headers() http.Header
|
||||
// Identifier returns the stream's ID.
|
||||
Identifier() uint32
|
||||
}
|
||||
|
||||
// IsUpgradeRequest returns true if the given request is a connection upgrade request
|
||||
func IsUpgradeRequest(req *http.Request) bool {
|
||||
for _, h := range req.Header[http.CanonicalHeaderKey(HeaderConnection)] {
|
||||
if strings.Contains(strings.ToLower(h), strings.ToLower(HeaderUpgrade)) {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func negotiateProtocol(clientProtocols, serverProtocols []string) string {
|
||||
for i := range clientProtocols {
|
||||
for j := range serverProtocols {
|
||||
if clientProtocols[i] == serverProtocols[j] {
|
||||
return clientProtocols[i]
|
||||
}
|
||||
}
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
// Handshake performs a subprotocol negotiation. If the client did request a
|
||||
// subprotocol, Handshake will select the first common value found in
|
||||
// serverProtocols. If a match is found, Handshake adds a response header
|
||||
// indicating the chosen subprotocol. If no match is found, HTTP forbidden is
|
||||
// returned, along with a response header containing the list of protocols the
|
||||
// server can accept.
|
||||
func Handshake(req *http.Request, w http.ResponseWriter, serverProtocols []string) (string, error) {
|
||||
clientProtocols := req.Header[http.CanonicalHeaderKey(HeaderProtocolVersion)]
|
||||
if len(clientProtocols) == 0 {
|
||||
// Kube 1.0 clients didn't support subprotocol negotiation.
|
||||
// TODO require clientProtocols once Kube 1.0 is no longer supported
|
||||
return "", nil
|
||||
}
|
||||
|
||||
if len(serverProtocols) == 0 {
|
||||
// Kube 1.0 servers didn't support subprotocol negotiation. This is mainly for testing.
|
||||
// TODO require serverProtocols once Kube 1.0 is no longer supported
|
||||
return "", nil
|
||||
}
|
||||
|
||||
negotiatedProtocol := negotiateProtocol(clientProtocols, serverProtocols)
|
||||
if len(negotiatedProtocol) == 0 {
|
||||
for i := range serverProtocols {
|
||||
w.Header().Add(HeaderAcceptedProtocolVersions, serverProtocols[i])
|
||||
}
|
||||
err := fmt.Errorf("unable to upgrade: unable to negotiate protocol: client supports %v, server accepts %v", clientProtocols, serverProtocols)
|
||||
http.Error(w, err.Error(), http.StatusForbidden)
|
||||
return "", err
|
||||
}
|
||||
|
||||
w.Header().Add(HeaderProtocolVersion, negotiatedProtocol)
|
||||
return negotiatedProtocol, nil
|
||||
}
|
||||
145
vendor/k8s.io/apimachinery/pkg/util/httpstream/spdy/connection.go
сгенерированный
поставляемый
Normal file
145
vendor/k8s.io/apimachinery/pkg/util/httpstream/spdy/connection.go
сгенерированный
поставляемый
Normal file
|
|
@ -0,0 +1,145 @@
|
|||
/*
|
||||
Copyright 2015 The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package spdy
|
||||
|
||||
import (
|
||||
"net"
|
||||
"net/http"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/docker/spdystream"
|
||||
"k8s.io/apimachinery/pkg/util/httpstream"
|
||||
"k8s.io/klog"
|
||||
)
|
||||
|
||||
// connection maintains state about a spdystream.Connection and its associated
|
||||
// streams.
|
||||
type connection struct {
|
||||
conn *spdystream.Connection
|
||||
streams []httpstream.Stream
|
||||
streamLock sync.Mutex
|
||||
newStreamHandler httpstream.NewStreamHandler
|
||||
}
|
||||
|
||||
// NewClientConnection creates a new SPDY client connection.
|
||||
func NewClientConnection(conn net.Conn) (httpstream.Connection, error) {
|
||||
spdyConn, err := spdystream.NewConnection(conn, false)
|
||||
if err != nil {
|
||||
defer conn.Close()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return newConnection(spdyConn, httpstream.NoOpNewStreamHandler), nil
|
||||
}
|
||||
|
||||
// NewServerConnection creates a new SPDY server connection. newStreamHandler
|
||||
// will be invoked when the server receives a newly created stream from the
|
||||
// client.
|
||||
func NewServerConnection(conn net.Conn, newStreamHandler httpstream.NewStreamHandler) (httpstream.Connection, error) {
|
||||
spdyConn, err := spdystream.NewConnection(conn, true)
|
||||
if err != nil {
|
||||
defer conn.Close()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return newConnection(spdyConn, newStreamHandler), nil
|
||||
}
|
||||
|
||||
// newConnection returns a new connection wrapping conn. newStreamHandler
|
||||
// will be invoked when the server receives a newly created stream from the
|
||||
// client.
|
||||
func newConnection(conn *spdystream.Connection, newStreamHandler httpstream.NewStreamHandler) httpstream.Connection {
|
||||
c := &connection{conn: conn, newStreamHandler: newStreamHandler}
|
||||
go conn.Serve(c.newSpdyStream)
|
||||
return c
|
||||
}
|
||||
|
||||
// createStreamResponseTimeout indicates how long to wait for the other side to
|
||||
// acknowledge the new stream before timing out.
|
||||
const createStreamResponseTimeout = 30 * time.Second
|
||||
|
||||
// Close first sends a reset for all of the connection's streams, and then
|
||||
// closes the underlying spdystream.Connection.
|
||||
func (c *connection) Close() error {
|
||||
c.streamLock.Lock()
|
||||
for _, s := range c.streams {
|
||||
// calling Reset instead of Close ensures that all streams are fully torn down
|
||||
s.Reset()
|
||||
}
|
||||
c.streams = make([]httpstream.Stream, 0)
|
||||
c.streamLock.Unlock()
|
||||
|
||||
// now that all streams are fully torn down, it's safe to call close on the underlying connection,
|
||||
// which should be able to terminate immediately at this point, instead of waiting for any
|
||||
// remaining graceful stream termination.
|
||||
return c.conn.Close()
|
||||
}
|
||||
|
||||
// CreateStream creates a new stream with the specified headers and registers
|
||||
// it with the connection.
|
||||
func (c *connection) CreateStream(headers http.Header) (httpstream.Stream, error) {
|
||||
stream, err := c.conn.CreateStream(headers, nil, false)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if err = stream.WaitTimeout(createStreamResponseTimeout); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
c.registerStream(stream)
|
||||
return stream, nil
|
||||
}
|
||||
|
||||
// registerStream adds the stream s to the connection's list of streams that
|
||||
// it owns.
|
||||
func (c *connection) registerStream(s httpstream.Stream) {
|
||||
c.streamLock.Lock()
|
||||
c.streams = append(c.streams, s)
|
||||
c.streamLock.Unlock()
|
||||
}
|
||||
|
||||
// CloseChan returns a channel that, when closed, indicates that the underlying
|
||||
// spdystream.Connection has been closed.
|
||||
func (c *connection) CloseChan() <-chan bool {
|
||||
return c.conn.CloseChan()
|
||||
}
|
||||
|
||||
// newSpdyStream is the internal new stream handler used by spdystream.Connection.Serve.
|
||||
// It calls connection's newStreamHandler, giving it the opportunity to accept or reject
|
||||
// the stream. If newStreamHandler returns an error, the stream is rejected. If not, the
|
||||
// stream is accepted and registered with the connection.
|
||||
func (c *connection) newSpdyStream(stream *spdystream.Stream) {
|
||||
replySent := make(chan struct{})
|
||||
err := c.newStreamHandler(stream, replySent)
|
||||
rejectStream := (err != nil)
|
||||
if rejectStream {
|
||||
klog.Warningf("Stream rejected: %v", err)
|
||||
stream.Reset()
|
||||
return
|
||||
}
|
||||
|
||||
c.registerStream(stream)
|
||||
stream.SendReply(http.Header{}, rejectStream)
|
||||
close(replySent)
|
||||
}
|
||||
|
||||
// SetIdleTimeout sets the amount of time the connection may remain idle before
|
||||
// it is automatically closed.
|
||||
func (c *connection) SetIdleTimeout(timeout time.Duration) {
|
||||
c.conn.SetIdleTimeout(timeout)
|
||||
}
|
||||
335
vendor/k8s.io/apimachinery/pkg/util/httpstream/spdy/roundtripper.go
сгенерированный
поставляемый
Normal file
335
vendor/k8s.io/apimachinery/pkg/util/httpstream/spdy/roundtripper.go
сгенерированный
поставляемый
Normal file
|
|
@ -0,0 +1,335 @@
|
|||
/*
|
||||
Copyright 2015 The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package spdy
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"context"
|
||||
"crypto/tls"
|
||||
"encoding/base64"
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
"net/http"
|
||||
"net/http/httputil"
|
||||
"net/url"
|
||||
"strings"
|
||||
|
||||
apierrors "k8s.io/apimachinery/pkg/api/errors"
|
||||
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
||||
"k8s.io/apimachinery/pkg/runtime"
|
||||
"k8s.io/apimachinery/pkg/runtime/serializer"
|
||||
"k8s.io/apimachinery/pkg/util/httpstream"
|
||||
utilnet "k8s.io/apimachinery/pkg/util/net"
|
||||
"k8s.io/apimachinery/third_party/forked/golang/netutil"
|
||||
)
|
||||
|
||||
// SpdyRoundTripper knows how to upgrade an HTTP request to one that supports
|
||||
// multiplexed streams. After RoundTrip() is invoked, Conn will be set
|
||||
// and usable. SpdyRoundTripper implements the UpgradeRoundTripper interface.
|
||||
type SpdyRoundTripper struct {
|
||||
//tlsConfig holds the TLS configuration settings to use when connecting
|
||||
//to the remote server.
|
||||
tlsConfig *tls.Config
|
||||
|
||||
/* TODO according to http://golang.org/pkg/net/http/#RoundTripper, a RoundTripper
|
||||
must be safe for use by multiple concurrent goroutines. If this is absolutely
|
||||
necessary, we could keep a map from http.Request to net.Conn. In practice,
|
||||
a client will create an http.Client, set the transport to a new insteace of
|
||||
SpdyRoundTripper, and use it a single time, so this hopefully won't be an issue.
|
||||
*/
|
||||
// conn is the underlying network connection to the remote server.
|
||||
conn net.Conn
|
||||
|
||||
// Dialer is the dialer used to connect. Used if non-nil.
|
||||
Dialer *net.Dialer
|
||||
|
||||
// proxier knows which proxy to use given a request, defaults to http.ProxyFromEnvironment
|
||||
// Used primarily for mocking the proxy discovery in tests.
|
||||
proxier func(req *http.Request) (*url.URL, error)
|
||||
|
||||
// followRedirects indicates if the round tripper should examine responses for redirects and
|
||||
// follow them.
|
||||
followRedirects bool
|
||||
// requireSameHostRedirects restricts redirect following to only follow redirects to the same host
|
||||
// as the original request.
|
||||
requireSameHostRedirects bool
|
||||
}
|
||||
|
||||
var _ utilnet.TLSClientConfigHolder = &SpdyRoundTripper{}
|
||||
var _ httpstream.UpgradeRoundTripper = &SpdyRoundTripper{}
|
||||
var _ utilnet.Dialer = &SpdyRoundTripper{}
|
||||
|
||||
// NewRoundTripper creates a new SpdyRoundTripper that will use
|
||||
// the specified tlsConfig.
|
||||
func NewRoundTripper(tlsConfig *tls.Config, followRedirects, requireSameHostRedirects bool) httpstream.UpgradeRoundTripper {
|
||||
return NewSpdyRoundTripper(tlsConfig, followRedirects, requireSameHostRedirects)
|
||||
}
|
||||
|
||||
// NewSpdyRoundTripper creates a new SpdyRoundTripper that will use
|
||||
// the specified tlsConfig. This function is mostly meant for unit tests.
|
||||
func NewSpdyRoundTripper(tlsConfig *tls.Config, followRedirects, requireSameHostRedirects bool) *SpdyRoundTripper {
|
||||
return &SpdyRoundTripper{
|
||||
tlsConfig: tlsConfig,
|
||||
followRedirects: followRedirects,
|
||||
requireSameHostRedirects: requireSameHostRedirects,
|
||||
}
|
||||
}
|
||||
|
||||
// TLSClientConfig implements pkg/util/net.TLSClientConfigHolder for proper TLS checking during
|
||||
// proxying with a spdy roundtripper.
|
||||
func (s *SpdyRoundTripper) TLSClientConfig() *tls.Config {
|
||||
return s.tlsConfig
|
||||
}
|
||||
|
||||
// Dial implements k8s.io/apimachinery/pkg/util/net.Dialer.
|
||||
func (s *SpdyRoundTripper) Dial(req *http.Request) (net.Conn, error) {
|
||||
conn, err := s.dial(req)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if err := req.Write(conn); err != nil {
|
||||
conn.Close()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return conn, nil
|
||||
}
|
||||
|
||||
// dial dials the host specified by req, using TLS if appropriate, optionally
|
||||
// using a proxy server if one is configured via environment variables.
|
||||
func (s *SpdyRoundTripper) dial(req *http.Request) (net.Conn, error) {
|
||||
proxier := s.proxier
|
||||
if proxier == nil {
|
||||
proxier = utilnet.NewProxierWithNoProxyCIDR(http.ProxyFromEnvironment)
|
||||
}
|
||||
proxyURL, err := proxier(req)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if proxyURL == nil {
|
||||
return s.dialWithoutProxy(req.Context(), req.URL)
|
||||
}
|
||||
|
||||
// ensure we use a canonical host with proxyReq
|
||||
targetHost := netutil.CanonicalAddr(req.URL)
|
||||
|
||||
// proxying logic adapted from http://blog.h6t.eu/post/74098062923/golang-websocket-with-http-proxy-support
|
||||
proxyReq := http.Request{
|
||||
Method: "CONNECT",
|
||||
URL: &url.URL{},
|
||||
Host: targetHost,
|
||||
}
|
||||
|
||||
if pa := s.proxyAuth(proxyURL); pa != "" {
|
||||
proxyReq.Header = http.Header{}
|
||||
proxyReq.Header.Set("Proxy-Authorization", pa)
|
||||
}
|
||||
|
||||
proxyDialConn, err := s.dialWithoutProxy(req.Context(), proxyURL)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
proxyClientConn := httputil.NewProxyClientConn(proxyDialConn, nil)
|
||||
_, err = proxyClientConn.Do(&proxyReq)
|
||||
if err != nil && err != httputil.ErrPersistEOF {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
rwc, _ := proxyClientConn.Hijack()
|
||||
|
||||
if req.URL.Scheme != "https" {
|
||||
return rwc, nil
|
||||
}
|
||||
|
||||
host, _, err := net.SplitHostPort(targetHost)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
tlsConfig := s.tlsConfig
|
||||
switch {
|
||||
case tlsConfig == nil:
|
||||
tlsConfig = &tls.Config{ServerName: host}
|
||||
case len(tlsConfig.ServerName) == 0:
|
||||
tlsConfig = tlsConfig.Clone()
|
||||
tlsConfig.ServerName = host
|
||||
}
|
||||
|
||||
tlsConn := tls.Client(rwc, tlsConfig)
|
||||
|
||||
// need to manually call Handshake() so we can call VerifyHostname() below
|
||||
if err := tlsConn.Handshake(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Return if we were configured to skip validation
|
||||
if tlsConfig.InsecureSkipVerify {
|
||||
return tlsConn, nil
|
||||
}
|
||||
|
||||
if err := tlsConn.VerifyHostname(tlsConfig.ServerName); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return tlsConn, nil
|
||||
}
|
||||
|
||||
// dialWithoutProxy dials the host specified by url, using TLS if appropriate.
|
||||
func (s *SpdyRoundTripper) dialWithoutProxy(ctx context.Context, url *url.URL) (net.Conn, error) {
|
||||
dialAddr := netutil.CanonicalAddr(url)
|
||||
|
||||
if url.Scheme == "http" {
|
||||
if s.Dialer == nil {
|
||||
var d net.Dialer
|
||||
return d.DialContext(ctx, "tcp", dialAddr)
|
||||
} else {
|
||||
return s.Dialer.DialContext(ctx, "tcp", dialAddr)
|
||||
}
|
||||
}
|
||||
|
||||
// TODO validate the TLSClientConfig is set up?
|
||||
var conn *tls.Conn
|
||||
var err error
|
||||
if s.Dialer == nil {
|
||||
conn, err = tls.Dial("tcp", dialAddr, s.tlsConfig)
|
||||
} else {
|
||||
conn, err = tls.DialWithDialer(s.Dialer, "tcp", dialAddr, s.tlsConfig)
|
||||
}
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Return if we were configured to skip validation
|
||||
if s.tlsConfig != nil && s.tlsConfig.InsecureSkipVerify {
|
||||
return conn, nil
|
||||
}
|
||||
|
||||
host, _, err := net.SplitHostPort(dialAddr)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if s.tlsConfig != nil && len(s.tlsConfig.ServerName) > 0 {
|
||||
host = s.tlsConfig.ServerName
|
||||
}
|
||||
err = conn.VerifyHostname(host)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return conn, nil
|
||||
}
|
||||
|
||||
// proxyAuth returns, for a given proxy URL, the value to be used for the Proxy-Authorization header
|
||||
func (s *SpdyRoundTripper) proxyAuth(proxyURL *url.URL) string {
|
||||
if proxyURL == nil || proxyURL.User == nil {
|
||||
return ""
|
||||
}
|
||||
credentials := proxyURL.User.String()
|
||||
encodedAuth := base64.StdEncoding.EncodeToString([]byte(credentials))
|
||||
return fmt.Sprintf("Basic %s", encodedAuth)
|
||||
}
|
||||
|
||||
// RoundTrip executes the Request and upgrades it. After a successful upgrade,
|
||||
// clients may call SpdyRoundTripper.Connection() to retrieve the upgraded
|
||||
// connection.
|
||||
func (s *SpdyRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
|
||||
header := utilnet.CloneHeader(req.Header)
|
||||
header.Add(httpstream.HeaderConnection, httpstream.HeaderUpgrade)
|
||||
header.Add(httpstream.HeaderUpgrade, HeaderSpdy31)
|
||||
|
||||
var (
|
||||
conn net.Conn
|
||||
rawResponse []byte
|
||||
err error
|
||||
)
|
||||
|
||||
if s.followRedirects {
|
||||
conn, rawResponse, err = utilnet.ConnectWithRedirects(req.Method, req.URL, header, req.Body, s, s.requireSameHostRedirects)
|
||||
} else {
|
||||
clone := utilnet.CloneRequest(req)
|
||||
clone.Header = header
|
||||
conn, err = s.Dial(clone)
|
||||
}
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
responseReader := bufio.NewReader(
|
||||
io.MultiReader(
|
||||
bytes.NewBuffer(rawResponse),
|
||||
conn,
|
||||
),
|
||||
)
|
||||
|
||||
resp, err := http.ReadResponse(responseReader, nil)
|
||||
if err != nil {
|
||||
if conn != nil {
|
||||
conn.Close()
|
||||
}
|
||||
return nil, err
|
||||
}
|
||||
|
||||
s.conn = conn
|
||||
|
||||
return resp, nil
|
||||
}
|
||||
|
||||
// NewConnection validates the upgrade response, creating and returning a new
|
||||
// httpstream.Connection if there were no errors.
|
||||
func (s *SpdyRoundTripper) NewConnection(resp *http.Response) (httpstream.Connection, error) {
|
||||
connectionHeader := strings.ToLower(resp.Header.Get(httpstream.HeaderConnection))
|
||||
upgradeHeader := strings.ToLower(resp.Header.Get(httpstream.HeaderUpgrade))
|
||||
if (resp.StatusCode != http.StatusSwitchingProtocols) || !strings.Contains(connectionHeader, strings.ToLower(httpstream.HeaderUpgrade)) || !strings.Contains(upgradeHeader, strings.ToLower(HeaderSpdy31)) {
|
||||
defer resp.Body.Close()
|
||||
responseError := ""
|
||||
responseErrorBytes, err := ioutil.ReadAll(resp.Body)
|
||||
if err != nil {
|
||||
responseError = "unable to read error from server response"
|
||||
} else {
|
||||
// TODO: I don't belong here, I should be abstracted from this class
|
||||
if obj, _, err := statusCodecs.UniversalDecoder().Decode(responseErrorBytes, nil, &metav1.Status{}); err == nil {
|
||||
if status, ok := obj.(*metav1.Status); ok {
|
||||
return nil, &apierrors.StatusError{ErrStatus: *status}
|
||||
}
|
||||
}
|
||||
responseError = string(responseErrorBytes)
|
||||
responseError = strings.TrimSpace(responseError)
|
||||
}
|
||||
|
||||
return nil, fmt.Errorf("unable to upgrade connection: %s", responseError)
|
||||
}
|
||||
|
||||
return NewClientConnection(s.conn)
|
||||
}
|
||||
|
||||
// statusScheme is private scheme for the decoding here until someone fixes the TODO in NewConnection
|
||||
var statusScheme = runtime.NewScheme()
|
||||
|
||||
// ParameterCodec knows about query parameters used with the meta v1 API spec.
|
||||
var statusCodecs = serializer.NewCodecFactory(statusScheme)
|
||||
|
||||
func init() {
|
||||
statusScheme.AddUnversionedTypes(metav1.SchemeGroupVersion,
|
||||
&metav1.Status{},
|
||||
)
|
||||
}
|
||||
107
vendor/k8s.io/apimachinery/pkg/util/httpstream/spdy/upgrade.go
сгенерированный
поставляемый
Normal file
107
vendor/k8s.io/apimachinery/pkg/util/httpstream/spdy/upgrade.go
сгенерированный
поставляемый
Normal file
|
|
@ -0,0 +1,107 @@
|
|||
/*
|
||||
Copyright 2015 The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package spdy
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"fmt"
|
||||
"io"
|
||||
"net"
|
||||
"net/http"
|
||||
"strings"
|
||||
"sync/atomic"
|
||||
|
||||
"k8s.io/apimachinery/pkg/util/httpstream"
|
||||
"k8s.io/apimachinery/pkg/util/runtime"
|
||||
)
|
||||
|
||||
const HeaderSpdy31 = "SPDY/3.1"
|
||||
|
||||
// responseUpgrader knows how to upgrade HTTP responses. It
|
||||
// implements the httpstream.ResponseUpgrader interface.
|
||||
type responseUpgrader struct {
|
||||
}
|
||||
|
||||
// connWrapper is used to wrap a hijacked connection and its bufio.Reader. All
|
||||
// calls will be handled directly by the underlying net.Conn with the exception
|
||||
// of Read and Close calls, which will consider data in the bufio.Reader. This
|
||||
// ensures that data already inside the used bufio.Reader instance is also
|
||||
// read.
|
||||
type connWrapper struct {
|
||||
net.Conn
|
||||
closed int32
|
||||
bufReader *bufio.Reader
|
||||
}
|
||||
|
||||
func (w *connWrapper) Read(b []byte) (n int, err error) {
|
||||
if atomic.LoadInt32(&w.closed) == 1 {
|
||||
return 0, io.EOF
|
||||
}
|
||||
return w.bufReader.Read(b)
|
||||
}
|
||||
|
||||
func (w *connWrapper) Close() error {
|
||||
err := w.Conn.Close()
|
||||
atomic.StoreInt32(&w.closed, 1)
|
||||
return err
|
||||
}
|
||||
|
||||
// NewResponseUpgrader returns a new httpstream.ResponseUpgrader that is
|
||||
// capable of upgrading HTTP responses using SPDY/3.1 via the
|
||||
// spdystream package.
|
||||
func NewResponseUpgrader() httpstream.ResponseUpgrader {
|
||||
return responseUpgrader{}
|
||||
}
|
||||
|
||||
// UpgradeResponse upgrades an HTTP response to one that supports multiplexed
|
||||
// streams. newStreamHandler will be called synchronously whenever the
|
||||
// other end of the upgraded connection creates a new stream.
|
||||
func (u responseUpgrader) UpgradeResponse(w http.ResponseWriter, req *http.Request, newStreamHandler httpstream.NewStreamHandler) httpstream.Connection {
|
||||
connectionHeader := strings.ToLower(req.Header.Get(httpstream.HeaderConnection))
|
||||
upgradeHeader := strings.ToLower(req.Header.Get(httpstream.HeaderUpgrade))
|
||||
if !strings.Contains(connectionHeader, strings.ToLower(httpstream.HeaderUpgrade)) || !strings.Contains(upgradeHeader, strings.ToLower(HeaderSpdy31)) {
|
||||
errorMsg := fmt.Sprintf("unable to upgrade: missing upgrade headers in request: %#v", req.Header)
|
||||
http.Error(w, errorMsg, http.StatusBadRequest)
|
||||
return nil
|
||||
}
|
||||
|
||||
hijacker, ok := w.(http.Hijacker)
|
||||
if !ok {
|
||||
errorMsg := fmt.Sprintf("unable to upgrade: unable to hijack response")
|
||||
http.Error(w, errorMsg, http.StatusInternalServerError)
|
||||
return nil
|
||||
}
|
||||
|
||||
w.Header().Add(httpstream.HeaderConnection, httpstream.HeaderUpgrade)
|
||||
w.Header().Add(httpstream.HeaderUpgrade, HeaderSpdy31)
|
||||
w.WriteHeader(http.StatusSwitchingProtocols)
|
||||
|
||||
conn, bufrw, err := hijacker.Hijack()
|
||||
if err != nil {
|
||||
runtime.HandleError(fmt.Errorf("unable to upgrade: error hijacking response: %v", err))
|
||||
return nil
|
||||
}
|
||||
|
||||
connWithBuf := &connWrapper{Conn: conn, bufReader: bufrw.Reader}
|
||||
spdyConn, err := NewServerConnection(connWithBuf, newStreamHandler)
|
||||
if err != nil {
|
||||
runtime.HandleError(fmt.Errorf("unable to upgrade: error creating SPDY server connection: %v", err))
|
||||
return nil
|
||||
}
|
||||
|
||||
return spdyConn
|
||||
}
|
||||
27
vendor/k8s.io/apimachinery/third_party/forked/golang/netutil/addr.go
сгенерированный
поставляемый
Normal file
27
vendor/k8s.io/apimachinery/third_party/forked/golang/netutil/addr.go
сгенерированный
поставляемый
Normal file
|
|
@ -0,0 +1,27 @@
|
|||
package netutil
|
||||
|
||||
import (
|
||||
"net/url"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// FROM: http://golang.org/src/net/http/client.go
|
||||
// Given a string of the form "host", "host:port", or "[ipv6::address]:port",
|
||||
// return true if the string includes a port.
|
||||
func hasPort(s string) bool { return strings.LastIndex(s, ":") > strings.LastIndex(s, "]") }
|
||||
|
||||
// FROM: http://golang.org/src/net/http/transport.go
|
||||
var portMap = map[string]string{
|
||||
"http": "80",
|
||||
"https": "443",
|
||||
}
|
||||
|
||||
// FROM: http://golang.org/src/net/http/transport.go
|
||||
// canonicalAddr returns url.Host but always with a ":port" suffix
|
||||
func CanonicalAddr(url *url.URL) string {
|
||||
addr := url.Host
|
||||
if !hasPort(addr) {
|
||||
return addr + ":" + portMap[url.Scheme]
|
||||
}
|
||||
return addr
|
||||
}
|
||||
|
|
@ -0,0 +1,94 @@
|
|||
/*
|
||||
Copyright 2017 The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package spdy
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"net/http"
|
||||
"net/url"
|
||||
|
||||
"k8s.io/apimachinery/pkg/util/httpstream"
|
||||
"k8s.io/apimachinery/pkg/util/httpstream/spdy"
|
||||
restclient "k8s.io/client-go/rest"
|
||||
)
|
||||
|
||||
// Upgrader validates a response from the server after a SPDY upgrade.
|
||||
type Upgrader interface {
|
||||
// NewConnection validates the response and creates a new Connection.
|
||||
NewConnection(resp *http.Response) (httpstream.Connection, error)
|
||||
}
|
||||
|
||||
// RoundTripperFor returns a round tripper and upgrader to use with SPDY.
|
||||
func RoundTripperFor(config *restclient.Config) (http.RoundTripper, Upgrader, error) {
|
||||
tlsConfig, err := restclient.TLSConfigFor(config)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
upgradeRoundTripper := spdy.NewRoundTripper(tlsConfig, true, false)
|
||||
wrapper, err := restclient.HTTPWrappersForConfig(config, upgradeRoundTripper)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
return wrapper, upgradeRoundTripper, nil
|
||||
}
|
||||
|
||||
// dialer implements the httpstream.Dialer interface.
|
||||
type dialer struct {
|
||||
client *http.Client
|
||||
upgrader Upgrader
|
||||
method string
|
||||
url *url.URL
|
||||
}
|
||||
|
||||
var _ httpstream.Dialer = &dialer{}
|
||||
|
||||
// NewDialer will create a dialer that connects to the provided URL and upgrades the connection to SPDY.
|
||||
func NewDialer(upgrader Upgrader, client *http.Client, method string, url *url.URL) httpstream.Dialer {
|
||||
return &dialer{
|
||||
client: client,
|
||||
upgrader: upgrader,
|
||||
method: method,
|
||||
url: url,
|
||||
}
|
||||
}
|
||||
|
||||
func (d *dialer) Dial(protocols ...string) (httpstream.Connection, string, error) {
|
||||
req, err := http.NewRequest(d.method, d.url.String(), nil)
|
||||
if err != nil {
|
||||
return nil, "", fmt.Errorf("error creating request: %v", err)
|
||||
}
|
||||
return Negotiate(d.upgrader, d.client, req, protocols...)
|
||||
}
|
||||
|
||||
// Negotiate opens a connection to a remote server and attempts to negotiate
|
||||
// a SPDY connection. Upon success, it returns the connection and the protocol selected by
|
||||
// the server. The client transport must use the upgradeRoundTripper - see RoundTripperFor.
|
||||
func Negotiate(upgrader Upgrader, client *http.Client, req *http.Request, protocols ...string) (httpstream.Connection, string, error) {
|
||||
for i := range protocols {
|
||||
req.Header.Add(httpstream.HeaderProtocolVersion, protocols[i])
|
||||
}
|
||||
resp, err := client.Do(req)
|
||||
if err != nil {
|
||||
return nil, "", fmt.Errorf("error sending request: %v", err)
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
conn, err := upgrader.NewConnection(resp)
|
||||
if err != nil {
|
||||
return nil, "", err
|
||||
}
|
||||
return conn, resp.Header.Get(httpstream.HeaderProtocolVersion), nil
|
||||
}
|
||||
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