Packet processing (decoding, encoding, file writing, etc) happens with
the main parent object (metafile) unlocked and only with the specific
child object (SSRC) locked.
During teardown we close all SSRC objects with the metafile locked,
without locking the SSRC objects. This opens up a race condition during
which SSRC closing can happen at the same time as packet processing.
Fix this by locking each SSRC object during teardown, and also clear out
the SSRC hash table while the metafile is locked, which serves as a
marker to a packet processing thread that processing should be skipped.
Closes#1663
Change-Id: I4e8a6a5abfd678a6cfd794a98470a49d60694207
(cherry picked from commit 237a3a6402)
Deprecate usage of the bit flags for return.
And instead do:
- only return true/false for the redis update
- check if we have to destroy the whole call using the
`call_monologues_associations_left()` only
Additionally remove unused variables.
Change-Id: Ie858c533d1aa4b74024d65c7064aa56437389882
(cherry picked from commit 0ce16c7e20)
Check globally left monologues (with associations left) after
the `monologue_delete_iter()` has already done its job.
This is needed to prevent cases, when a recursive call of the
`monologue_delete_iter()` leads to blocking of the whole call
destorying, meanwhile it's required, e.g.:
- A is in progress of destorying
- B gets recursive call of `monologue_delete_iter()` and sees
that A has still one association left with C, which A simply
hasn't manage to remove yet.
This commit introduces new function: `call_monologues_associations_left()`
Change-Id: I0941c18a76fa8c2a78d3864aee9e6433283bec88
(cherry picked from commit f4eb2d5a26)
Avoid trying to acquire a recursive lock by making sure the response is
always generated in a different thread.
Fixes#1656
Change-Id: I6c4c5bb52cb95a204823848bb427ab24f42dcccd
(cherry picked from commit 04ce204ef6)
This commit: 6f0ad0db0f
introduced an improved behavior of the call deconstruction
when dealing with multiple forked legs. But it also
introduced a regression related to TPCC related calls.
This is because it takes into consideration existing
`->viabranches`, which is not efficient in certain cases.
Instead, we just have to ensure, whether there are
other monologues of the call object, which are not directly
"visible" for this branch being cancelled (so they are not directly
associated to that), but they might have own associations
present, which means the call mustn't be globally destoroyed.
Change-Id: I630f2d88ef3b557af3a95816fc2703daccaff374
(cherry picked from commit 0994ffbe75)
The `encoder` is actually persistent and only freed when the output is
freed, so testing for its existence is not enough to determine whether
the output is open. The `fmtctx` can be used for that.
Change-Id: I2cc3f00a0e983fafd5915736089a0421385b6ce3
(cherry picked from commit 833c30d69e)
We're supposed to use the remote password for sending STUN error
responses (same as for sending STUN success responses), not the local
one.
Fixes a bug from 2015.
Closes#1626
Change-Id: I975178405dcd41661bdc5e0c1208295f9db70006
(cherry picked from commit 394ed2fc62)
While LWS explicitly allows usage of lws_callback_on_writable() from
other threads, for some reason there is no internal locking in place,
and so a concurrently running lws_service() can interfere with internal
structures, in particular if lws_service() is closing connections at the
same time as lws_callback_on_writable() is invoked.
The suggested approach of using lws_cancel_service() in combination with
the LWS_CALLBACK_EVENT_WAIT_CANCELLED callback and a user-kept queue is
not feasible, as we need to support LWS 2.x, which doesn't have
LWS_CALLBACK_EVENT_WAIT_CANCELLED.
Closes#1624
Change-Id: Ia3ddeda66fd553c87f99404e0816d97ecbd4cdfe
(cherry picked from commit 1457b34f65)
These functions now cannot fail and so returning a value is pointless.
Change-Id: I062449f30f05fb3efa4ba520004a13de3a0abd5a
(cherry picked from commit 26cc168f83)
Avoid calling lws_write() from threads other than the service thread, as
this might not be thread-safe. Instead store the values used for the
HTTP response headers in the websocket_output, then trigger a "writable"
callback, and finally do all the lws_write() calls from the service
thread.
Reported in #1624
Change-Id: Ifcb050193044e5543f750a12fb44f5e16d4c0a08
(cherry picked from commit b207d0c586)
... instead of explicit lock/unlock pairs to save some code lines.
Change-Id: Iece32fb201cd3b662038e91d98443e1dcfd04a63
(cherry picked from commit f293ca9a18)
Removes one level of indentation for prettier code. Functional no-op.
Change-Id: I5f5528944f144499540f34bc1f322d00c9454fa6
(cherry picked from commit cb9ec2abf9)
Prevents race condition of running a player timer when it has already
been descheduled.
Change-Id: If45fad24572be19b955f2c2bd01384713bcfda07
(cherry picked from commit 2a178b49b8)
Don't change to a new port for sendonly streams as this causes problems
with NAT. A device receiving a sendonly SDP with a new port won't send
any RTP to the new port, leading to a closed (non existent) NAT mapping.
Change-Id: I2ea2163eb9f1203226bd781b53f421c790a86f0a
(cherry picked from commit b336828800)
The old port latching logic was simply to use the last (newest)
allocated endpoint_map. This turned out to be wrong, because the last
used socket on the monologue could have been one that was allocated
earlier (and older endpoint_map), as it can happen during repeated
re-invites. Add a new function to actually look for the correct
endpoint_map, matching the currently used socket, to make sure the port
doesn't change.
Change-Id: Iae768fe48539264575aed67cbbb6b08ac745130f
(cherry picked from commit 7d8834c244)
These are the entries the kernel will try to look for when userspace
tries to use the RTPENGINE support, but the module is called
xt_RTPENGINE so the kernel does not find it and thus cannot autoload
it.
The problem is that we have startup code that sets up iptables rules,
and will fail if the module has not yet been loaded. By adding these
aliases we are no longer concerned about the ordering, and can let the
kernel autoload the modules when they are needed.
Change-Id: I43a54af4e32adf755538c57df711da048c720030
(cherry picked from commit 2a6b2459f2)
(cherry picked from commit 9f61001bfd)
The SRTP decryption context is associated with the local socket. Use the
socket that a packet was actually received on for the decryption context
instead of using the one that it was expected to be received on.
Change-Id: Iddf400a440fc51b4afb370ec827f75e9626b2cfd
(cherry picked from commit 8c3452e50b7aa4f5b7122dbd7221e34143467885)
When a receiving socket doesn't match the socket we were expecting, make
sure that the receiving socket is actually one of the sockets we want to
use at this point before blindly switching the socket.
This fixes a race condition after a re-invite: A new set of sockets has
been opened, but an old/delayed RTP packet still arrives on one of the
old ports. In this case we don't want to switch the local socket.
Change-Id: I4e2b87ad608b1a9c6a0bb2eae5c305fd79be70d5
(cherry picked from commit 304a1b11ef6679b4ab133c1c44bb0f180903d948)
This is a new option flag, which provides a possiblity
to select specific crypto suite(s) for the offerer from
the given list of crypto suites received in the offer.
This will be used later on, when processing an answer from
the recipient and generating an answer to be sent out towards offerer.
Furthermore, this is being decided not when the answer is processed,
but already when the offer is processed.
Flag usage example:
`SDES-offerer_pref:AES_256_CM_HMAC_SHA;AES_256_CM_HMAC_SHA1_32;`
Change-Id: I2b22b38347d24f27331482e18b92305fbadb2520
We're already determining the destination media section in
media_player_play_init() (looking for audio media), so it makes sense to
determine the payload type there as well.
Change-Id: I33d4a15005c2146864f74663fe8de2893454345b
Split out the logic to determine the destination payload type into a
separate functions. This makes it possible to supply a different, or
pre-determined, payload type instead.
Change-Id: I9b67b29cafc0c6ce4e18eede64dea3d1973f8b63
It makes more sense to set up the codec handler from the init function
rather than from the function reading the media packet.
Change-Id: I0bea3d0fc0669a54f93b2598251df69274950365
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