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80 commits

Author SHA1 Message Date
Juliusz Chroboczek
be73380f9f Label streams, not tracks. 
We used to label tracks individually, in a view to using the labelling
for simulcast.  Since then, the WebRTC community has converged on a
different strategy, where multiple tracks share a single mid and
are labelled with the rid extension.

We now label whole streams, which is simpler, and use the track's
kind (and, in the future, the rid) to disambiguate.  This changes the
protocol in two ways:

  * in offers, the "labels" dictionary is replaced by a single "label"
    field; and
  * the syntax of the "request" message has changed.
 2021-04-29 18:28:16 +02:00
Juliusz Chroboczek
3ba2394be7 Implement user statuses. 
The server now maintains a set of statuses for each user that are not
interpreted by the server but communicated to the other members of the
group using 'user' messages.
 2021-04-28 17:01:05 +02:00
Juliusz Chroboczek
f0a39fca48 Send user permissions to client. 
We now maintain the user list in the serverConnection.
 2021-04-28 00:07:19 +02:00
Juliusz Chroboczek
fef38bc53f Protect against requesting when no group is joined. 
Thanks to gregfr.
 2021-04-15 12:07:05 +02:00
Juliusz Chroboczek
ea321be17a Make Kick part of the Client interface. 
All clients implement Kick, no need for a separate interface.
 2021-02-26 16:20:13 +01:00
Juliusz Chroboczek
ddb6039fa6 Fix error handling in client actions. 
Thanks to Yacine.
 2021-02-17 20:55:11 +01:00
Juliusz Chroboczek
260597d595 Ensure actions happen in order. 2021-02-15 00:35:09 +01:00
Juliusz Chroboczek
183ab4fed7 Use an unbounded buffer for client actions. 
We no longer risk deadlocking when sending actions, which in turn
enables pushing connections synchronously.
 2021-02-14 17:24:42 +01:00
Juliusz Chroboczek
3b505a89fe Factor out handling actions. 2021-02-14 16:47:36 +01:00
Juliusz Chroboczek
3c7b32056b Reduce writer timeout, increase amount of buffering. 
If the writer gets congested, the whole group might be delayed.  Better
to drop the slow client in that case.
 2021-02-14 16:26:56 +01:00
Juliusz Chroboczek
0261558e07 Protect against empty ids. 2021-02-05 16:07:58 +01:00
Juliusz Chroboczek
c3a19c9128 Avoid race between closing connections and terminating client. 
We need to terminate all down connections synchronously, otherwise
we risk leaving open connections lying around.
 2021-02-05 12:20:33 +01:00
Juliusz Chroboczek
66de0d16e7 Fix closing of replaced connections. 2021-02-04 23:51:51 +01:00
Juliusz Chroboczek
0ce509c62c Revert "Log client errors." 
We're already logging in the caller.

This reverts commit f4811e8cf5.
 2021-02-04 22:44:14 +01:00
Juliusz Chroboczek
263258a0c1 Implement renegotiation of down streams. 
We used to destroy and recreate down streams whenever something changed,
which turned out to be racy.  We now properly implement renegotiation,
as well as atomic replacement of a stream by another one.
 2021-02-03 19:15:40 +01:00
Juliusz Chroboczek
f34ec0ab66 Don't hide mismatches in the PeerConnection state automaton. 
The previous behaviour led to silent failures, which was confusing.
 2021-02-02 22:57:56 +01:00
Juliusz Chroboczek
f4811e8cf5 Log client errors. 2021-02-02 22:46:54 +01:00
Juliusz Chroboczek
d9e72f4fd0 Return an error when adding a duplicate down track. 2021-02-02 22:46:48 +01:00
Juliusz Chroboczek
36d6845dc1 Fix closing of replaced connections. 2021-02-01 14:08:54 +01:00
Juliusz Chroboczek
14a4303664 Rework connection replacement. 
We used to signal connection replacement by reusing the same connection
id.  This turned out to be racy, as we couldn't reliably discard old
answers after a connection id was refused.

We now use a new id for every new connection, and explicitly signal
stream replacement in the offer message.  This requires maintaining a
local id on the client side.
 2021-01-31 23:59:17 +01:00
Juliusz Chroboczek
f0dcd0b1d9 Rework locking of tracks. 
We now add tracks after the stream has been pushed, so we need a lock
on down streams.  Also rework sendUpRTCP to reduce locking.
 2021-01-19 23:55:33 +01:00
Juliusz Chroboczek
9a5c8b6b43 Handle answers in stable state. 
Don't break the stream, just ignore the SDP.
 2021-01-19 23:30:01 +01:00
Juliusz Chroboczek
6098d4af9d Implement autolock. 2021-01-14 03:56:37 +01:00
Juliusz Chroboczek
49bcc342ed Queue negotiation if not in stable state. 
If we send two offers back to back, the second answer will arive in
stable state, which will confuse us.  Instead, queue the second offer.
 2021-01-12 20:44:48 +01:00
Juliusz Chroboczek
820b303e84 Send localDescription instead of original SDP. 2021-01-11 20:41:34 +01:00
Juliusz Chroboczek
dad113c1f9 Generate transceivers from incoming SDP. 2021-01-11 20:24:09 +01:00
Juliusz Chroboczek
63e2b5a4c4 Implement 'noecho' field in client messages. 2021-01-11 16:30:07 +01:00
Juliusz Chroboczek
617aee325f Reduce ping timetout to 45 to 55s. 
Thanks to Jeroen van Veen for the debugging.
 2021-01-08 14:05:02 +01:00
Juliusz Chroboczek
7f4306ab3b Optimise broadcast messages. 
Avoid formatting JSON multiple times.
 2021-01-04 18:28:54 +01:00
Juliusz Chroboczek
0ec9f92dad Make 'clearchat' into a user message. 2021-01-03 17:47:56 +01:00
Juliusz Chroboczek
e393819eda Carry raw SDP in the protocol. 2021-01-03 17:00:58 +01:00
Juliusz Chroboczek
f53276b89e Simplify the protocol and the protocol interface. 
Split the id field into id and source, where source indicates the sender
of the message and id the entity being sent.  Remove the label request,
just use the offerer's username.  Maintain the username within the
ServerConnection, this removes a parameter from some methods.
 2021-01-03 12:17:30 +01:00
Juliusz Chroboczek
450601f0e8 Move ICE code into own module, add tests. 2021-01-02 00:21:17 +01:00
Juliusz Chroboczek
dbec9df288 Use Pion's JSON support for ICE configuration. 2021-01-01 22:28:38 +01:00
Juliusz Chroboczek
a0418d26ec Send RTC configuration with joined message. 
This avoids one HTTP request, and is potentially more flexible.
 2020-12-28 02:55:19 +01:00
Juliusz Chroboczek
d09c0f0a80 Make the value field of client messages carry arbitrary types. 2020-12-28 01:49:27 +01:00
Juliusz Chroboczek
9e4aede72a Fix issues with unaligned atomic operations. 
This could be solved by simply reordering the fields, but it
is more robust to move the atomics into their own structure,
and the extra indirection should not cost much.
 2020-12-27 01:31:31 +01:00
Juliusz Chroboczek
2785fa9f77 Store labels early. 
This avoids spurious up.complete indications.
 2020-12-25 22:32:30 +01:00
Juliusz Chroboczek
f4379f7a8c Protect against negotiation inconsistencies. 
This is not an issue in the current code, assuming that clients
negotiate correctly, but will become one once we implement codec
flexibility.
 2020-12-25 20:50:33 +01:00
Juliusz Chroboczek
d5c7a13aae Implement abort in the client->server direction. 2020-12-25 18:51:17 +01:00
Juliusz Chroboczek
d43a2b0104 Implement WallOps to send a warning to all operators. 2020-12-23 23:15:36 +01:00
Juliusz Chroboczek
4fde2c40e6 Run gofmt. 2020-12-19 17:38:47 +01:00
Juliusz Chroboczek
325f288189 Move to github. 2020-12-19 17:37:48 +01:00
Juliusz Chroboczek
a2f5bb82d1 Delete unrequested connections in addDownConnTracks. 
We don't renegotiate down connections yet, but this is a latent bug.
 2020-12-18 18:56:07 +01:00
Antonin Décimo
f5de94cf3e Correct spelling of privileged. 2020-12-15 14:52:46 +01:00
Juliusz Chroboczek
da8c592232 Fix log message. 
Thanks to Antonin Décimo.
 2020-12-12 23:21:49 +01:00
Juliusz Chroboczek
4de2953037 Fix incorrect closure in pushConnsAction. 
This was causing us to lose connections.
 2020-12-09 01:05:24 +01:00
Juliusz Chroboczek
ef1c211b7f SFU is now called Galène. 2020-12-06 19:51:02 +01:00
Juliusz Chroboczek
2d07c5d317 Move to Pion v3 API. 2020-12-06 11:15:59 +01:00
Juliusz Chroboczek
e8c732c54c Fix error handling at websocket close. 2020-12-05 03:07:22 +01:00