71 строка
1.9 KiB
Go
71 строка
1.9 KiB
Go
// +build go1.6,!go1.7
|
|
|
|
/*
|
|
*
|
|
* Copyright 2016 gRPC 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 grpc
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"net"
|
|
"net/http"
|
|
|
|
"golang.org/x/net/context"
|
|
"google.golang.org/grpc/codes"
|
|
"google.golang.org/grpc/status"
|
|
"google.golang.org/grpc/transport"
|
|
)
|
|
|
|
// dialContext connects to the address on the named network.
|
|
func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
|
|
return (&net.Dialer{Cancel: ctx.Done()}).Dial(network, address)
|
|
}
|
|
|
|
func sendHTTPRequest(ctx context.Context, req *http.Request, conn net.Conn) error {
|
|
req.Cancel = ctx.Done()
|
|
if err := req.Write(conn); err != nil {
|
|
return fmt.Errorf("failed to write the HTTP request: %v", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// toRPCErr converts an error into an error from the status package.
|
|
func toRPCErr(err error) error {
|
|
if err == nil || err == io.EOF {
|
|
return err
|
|
}
|
|
if _, ok := status.FromError(err); ok {
|
|
return err
|
|
}
|
|
switch e := err.(type) {
|
|
case transport.StreamError:
|
|
return status.Error(e.Code, e.Desc)
|
|
case transport.ConnectionError:
|
|
return status.Error(codes.Unavailable, e.Desc)
|
|
default:
|
|
switch err {
|
|
case context.DeadlineExceeded:
|
|
return status.Error(codes.DeadlineExceeded, err.Error())
|
|
case context.Canceled:
|
|
return status.Error(codes.Canceled, err.Error())
|
|
}
|
|
}
|
|
return status.Error(codes.Unknown, err.Error())
|
|
}
|