gecko-dev/media/mtransport
Brian O'Keefe 11bcc1cd9e Bug 875934 - Move LIBRARY_NAME to moz.build (batch #1); r=mshal
--HG--
extra : rebase_source : 385d3fd65475ffc18ee44ae088753649470e214b
2013-06-17 15:21:01 -04:00
..
build Bug 875934 - Move LIBRARY_NAME to moz.build (batch #1); r=mshal 2013-06-17 15:21:01 -04:00
standalone Bug 875934 - Move LIBRARY_NAME to moz.build (batch #1); r=mshal 2013-06-17 15:21:01 -04:00
test b=882906; remove EXTRA_DSO_LIBS; r=ted 2013-06-13 22:58:22 -04:00
third_party Bug 867933 - Part 2 - provide gonk-specific addrs.c to enable nICEr to enumerate network interfaces in gonk. r=ekr 2013-05-08 13:48:25 +08:00
README Bug 790517: mtransport - Generic media transport subsystem for ICE and DTLS r=jesup,bsmith,mcmanus 2012-10-02 13:04:58 -07:00
databuffer.h Bug 820102 - Clean up MediaPipeline threading (re-land after fix). r=derf,jesup 2012-12-21 06:03:22 -08:00
dtlsidentity.cpp Bug 867273 - Force PR_LOG in production builds. r=ekr 2013-05-20 19:11:01 -07:00
dtlsidentity.h Bug 790517: mtransport - Generic media transport subsystem for ICE and DTLS r=jesup,bsmith,mcmanus 2012-10-02 13:04:58 -07:00
gonk_addrs.cpp Bug 867933 - Part 2 - provide gonk-specific addrs.c to enable nICEr to enumerate network interfaces in gonk. r=ekr 2013-05-08 13:48:25 +08:00
logging.h Bug 867273 - Force PR_LOG in production builds. r=ekr 2013-05-20 19:11:01 -07:00
m_cpp_utils.h Bug 790517: mtransport - Generic media transport subsystem for ICE and DTLS r=jesup,bsmith,mcmanus 2012-10-02 13:04:58 -07:00
nr_socket_prsock.cpp Bug 874008 - Check format strings for r_log r=ekr 2013-05-21 09:16:07 +08:00
nr_socket_prsock.h Bug 837919 - RTCPeerConnection constructor supports FQDN STUN servers. r=ekr 2013-03-08 15:11:17 -05:00
nr_timer.cpp Bug 856433 - Allow cancellation of nonexistent nrappkit timers off the STS thread. r=abr 2013-04-16 19:29:23 -07:00
nricectx.cpp Bug 867273 - Force PR_LOG in production builds. r=ekr 2013-05-20 19:11:01 -07:00
nricectx.h Bug 860143: Check correct variable when setting host r=ekr 2013-04-10 13:37:50 -05:00
nricemediastream.cpp Bug 867273 - Force PR_LOG in production builds. r=ekr 2013-05-20 19:11:01 -07:00
nricemediastream.h Bug 825105 - Fix two clang warnings in media/mtransport/. r=ekr. 2013-02-10 18:01:07 -08:00
nriceresolver.cpp Bug 867273 - Force PR_LOG in production builds. r=ekr 2013-05-20 19:11:01 -07:00
nriceresolver.h Bug 837919 - RTCPeerConnection constructor supports FQDN STUN servers. r=ekr 2013-03-08 15:11:17 -05:00
nriceresolverfake.cpp Bug 843644 - DNS resolution for STUN servers. r=abr 2013-02-21 08:52:30 -08:00
nriceresolverfake.h Bug 843644 - DNS resolution for STUN servers. r=abr 2013-02-21 08:52:30 -08:00
objs.mk Bug 880486 - ns_stun_get_attrs doubly defined on B2G Desktop with MOZ_B2G_RIL [r=pwang] 2013-06-06 18:10:00 -07:00
runnable_utils.h Bug 854085. Make thread asserts conditional on DEBUG not MOZ_DEBUG. r=jesup 2013-04-16 13:13:09 -07:00
runnable_utils.py Assert on WrapRunnableRet with NS_DISPATCH_NORMAL 2013-03-04 08:51:48 -08:00
runnable_utils_generated.h Assert on WrapRunnableRet with NS_DISPATCH_NORMAL 2013-03-04 08:51:48 -08:00
sigslot.h Bug 752657: backout sigslot multithreaded due to deadlocks rs=jesup 2012-12-11 12:54:24 -05:00
transportflow.cpp Bug 867273 - Force PR_LOG in production builds. r=ekr 2013-05-20 19:11:01 -07:00
transportflow.h Backout changeset 5abbf6fd5466 (Bug 830100) for sctp_unittest failure ON A CLOSED TREE r=ryanvm 2013-04-09 17:35:20 -04:00
transportlayer.cpp Bug 867273 - Force PR_LOG in production builds. r=ekr 2013-05-20 19:11:01 -07:00
transportlayer.h Backout changeset 5abbf6fd5466 (Bug 830100) for sctp_unittest failure ON A CLOSED TREE r=ryanvm 2013-04-09 17:35:20 -04:00
transportlayerdtls.cpp Bug 867273 - Force PR_LOG in production builds. r=ekr 2013-05-20 19:11:01 -07:00
transportlayerdtls.h Bug 835692: Convert TransportLayerDtls::kMaxDigestLength to be a size_t, since that's how it's used & what it's compared to. r=ekr 2013-01-29 09:01:10 -08:00
transportlayerice.cpp Bug 812278: Remove no-longer-necessary semicolons after MOZ_MTLOG_MODULE macro invocations, to fix GCC pedantic build warnings. r=jesup 2012-11-15 17:50:26 -08:00
transportlayerice.h Bug 790517: mtransport - Generic media transport subsystem for ICE and DTLS r=jesup,bsmith,mcmanus 2012-10-02 13:04:58 -07:00
transportlayerlog.cpp Bug 812278: Remove no-longer-necessary semicolons after MOZ_MTLOG_MODULE macro invocations, to fix GCC pedantic build warnings. r=jesup 2012-11-15 17:50:26 -08:00
transportlayerlog.h Bug 790517: mtransport - Generic media transport subsystem for ICE and DTLS r=jesup,bsmith,mcmanus 2012-10-02 13:04:58 -07:00
transportlayerloopback.cpp Bug 867273 - Force PR_LOG in production builds. r=ekr 2013-05-20 19:11:01 -07:00
transportlayerloopback.h Backout changeset 5abbf6fd5466 (Bug 830100) for sctp_unittest failure ON A CLOSED TREE r=ryanvm 2013-04-09 17:35:20 -04:00
transportlayerprsock.cpp Bug 867273 - Force PR_LOG in production builds. r=ekr 2013-05-20 19:11:01 -07:00
transportlayerprsock.h Bug 783205 - Networking Dashboard. r=mcmanus, r=jorendorff, sr=biesi 2012-12-10 09:13:55 -05:00

README

This is a generic media transport system for WebRTC.

The basic model is that you have a TransportFlow which contains a
series of TransportLayers, each of which gets an opportunity to
manipulate data up and down the stack (think SysV STREAMS or a
standard networking stack). You can also address individual
sublayers to manipulate them or to bypass reading and writing
at an upper layer; WebRTC uses this to implement DTLS-SRTP.


DATAFLOW MODEL
Unlike the existing nsSocket I/O system, this is a push rather
than a pull system. Clients of the interface do writes downward
with SendPacket() and receive notification of incoming packets
via callbacks registed via sigslot.h. It is the responsibility
of the bottom layer (or any other layer which needs to reference
external events) to arrange for that somehow; typically by
using nsITimer or the SocketTansportService.

This sort of push model is a much better fit for the demands
of WebRTC, expecially because ICE contexts span multiple
network transports.


THREADING MODEL
There are no thread locks. It is the responsibility of the caller to
arrange that any given TransportLayer/TransportFlow is only
manipulated in one thread at once. One good way to do this is to run
everything on the STS thread. Many of the existing layer implementations
(TransportLayerPrsock, TransportLayerIce, TransportLayerLoopback)
already run on STS so in those cases you must run on STS, though
you can do setup on the main thread and then activate them on the
STS.


EXISTING TRANSPORT LAYERS
The following transport layers are currently implemented:

* DTLS -- a wrapper around NSS's DTLS [RFC 6347] stack
* ICE  -- a wrapper around the nICEr ICE [RFC 5245] stack.
* Prsock -- a wrapper around NSPR sockets
* Loopback -- a loopback IO mechanism
* Logging -- a passthrough that just logs its data

The last three are primarily for debugging.