gecko/media/mtransport
2014-06-24 12:36:44 -04:00
..
build
standalone
test Bug 1028588 - Fix dangerous public destructors in media/mtransport - r=abr 2014-06-24 12:36:44 -04:00
third_party Bug 1008796 - Fix return value in nr_ice_component_stun_server_default_cb. r=ekr 2014-06-10 10:45:01 -07:00
databuffer.h Bug 1027251 - Address review comments on mtransport - r=abr 2014-06-21 00:09:48 -04:00
dtlsidentity.cpp
dtlsidentity.h Bug 1027251 - Address review comments on mtransport - r=abr 2014-06-21 00:09:48 -04:00
gonk_addrs.cpp Bug 978709 - 4.h/6: NetworkInterfaceListService changes. r=vicamo 2014-03-29 15:18:25 +08:00
logging.h
m_cpp_utils.h
nr_socket_prsock.cpp Bug 891551 - Part 2: (Upliftable) Fix bugs where PR_WOULD_BLOCK_ERROR (or, in some cases, PR_NOT_CONNECTED_ERROR while a TCP socket was connecting) would cause sockets to be abandoned for no good reason (see also bug 985493 and 1001671). r=bwc 2014-05-02 10:49:00 -07:00
nr_socket_prsock.h Bug 1028588 - Fix dangerous public destructors in media/mtransport - r=abr 2014-06-24 12:36:44 -04:00
nr_timer.cpp Bug 900908 - Part 3: Change uses of numbered macros in nsIClassInfoImpl.h/nsISupportsImpl.h to the variadic variants. r=froydnj 2014-04-27 03:06:00 -04:00
nricectx.cpp Bug 1027938 - Bump max transmit count for ICE checks to 7. Also, adjust unit-tests. r=drno 2014-06-19 17:13:12 -07:00
nricectx.h Bug 1027251 - Fix or whitelist dangerous public destructors in media/mtransport - r=abr 2014-06-20 07:08:24 -04:00
nricemediastream.cpp
nricemediastream.h Bug 1027251 - Fix or whitelist dangerous public destructors in media/mtransport - r=abr 2014-06-20 07:08:24 -04:00
nriceresolver.cpp Bug 900908 - Part 3: Change uses of numbered macros in nsIClassInfoImpl.h/nsISupportsImpl.h to the variadic variants. r=froydnj 2014-04-27 03:06:00 -04:00
nriceresolver.h Bug 1028588 - Fix dangerous public destructors in media/mtransport - r=abr 2014-06-24 12:36:44 -04:00
nriceresolverfake.cpp
nriceresolverfake.h
nrinterfaceprioritizer.cpp
nrinterfaceprioritizer.h
objs.mozbuild
README
rlogringbuffer.cpp
rlogringbuffer.h
runnable_utils_generated.h Bug 968803 - part 2 - statically type runnable classes that return a result; r=ekr 2014-02-06 10:21:55 -05:00
runnable_utils.h Bug 968803 - part 2 - statically type runnable classes that return a result; r=ekr 2014-02-06 10:21:55 -05:00
runnable_utils.py Bug 968803 - part 2 - statically type runnable classes that return a result; r=ekr 2014-02-06 10:21:55 -05:00
sigslot.h
simpletokenbucket.cpp
simpletokenbucket.h
stun_udp_socket_filter.cpp Bug 1028588 - Fix dangerous public destructors in media/mtransport - r=abr 2014-06-24 12:36:44 -04:00
stun_udp_socket_filter.h Bug 1028588 - Fix dangerous public destructors in media/mtransport - r=abr 2014-06-24 12:36:44 -04:00
transportflow.cpp Bug 967364: Pass already_AddRefed by reference instead of by value. r=bsmedberg 2014-03-15 12:00:17 -07:00
transportflow.h Bug 1028588 - Fix dangerous public destructors in media/mtransport - r=abr 2014-06-24 12:36:44 -04:00
transportlayer.cpp
transportlayer.h
transportlayerdtls.cpp Bug 956525 - Replace 'Lower lower' in log messages with 'Lower layer'. r=abr 2014-01-20 07:38:00 -05:00
transportlayerdtls.h Bug 1027251 - Fix or whitelist dangerous public destructors in media/mtransport - r=abr 2014-06-20 07:08:24 -04:00
transportlayerice.cpp
transportlayerice.h
transportlayerlog.cpp
transportlayerlog.h
transportlayerloopback.cpp Bug 900908 - Part 3: Change uses of numbered macros in nsIClassInfoImpl.h/nsISupportsImpl.h to the variadic variants. r=froydnj 2014-04-27 03:06:00 -04:00
transportlayerloopback.h Bug 1028588 - Fix dangerous public destructors in media/mtransport - r=abr 2014-06-24 12:36:44 -04:00
transportlayerprsock.cpp
transportlayerprsock.h Bug 1028588 - Fix dangerous public destructors in media/mtransport - r=abr 2014-06-24 12:36:44 -04:00

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.