When open_memstream() fails, we should not try to write to it.

Change-Id: I9f92a1e1cc4aebe005039f28e5e3219e323e63c6
Warned-by: coverity

The __attempt_send() function will free the gs string on success,
so we should not free it again.

Change-Id: I74c9e41854db56bf29ae541eaeebfb97ce8eeb74
Warned-by: coverity

Change-Id: Ib7daeb3d838e0b679025f582f7c26fe5868f72cb

Change-Id: I64ec610b163534e3cfc0e7d0385329ab45c5cca3

Change-Id: I34e0aa0be1df06346e86684c6488caf8e302df9f

closes #1174

Change-Id: I277986ea30b25633c281291aa956fb2159c386ed

Change-Id: Ifb3ca589742a4ad0cc83982d6e42bf692a2c98db

also add better SDP error log output

closes #1182

Change-Id: I20ab77163a502793f63157fbafd0807c629a1ede

closes #1183

commit a74cf4a7f9
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Tue Feb 2 11:06:50 2021 +0100

    Add --dtmf-log-ng-tcp CLI option.

commit a428764d9b
Merge: 2bbfcb27 8abc6b1c
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Tue Feb 2 09:16:26 2021 +0100

    Merge branch 'master' into dtmf_events_over_ng_tcp

commit 2bbfcb2750
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Mon Feb 1 14:28:07 2021 +0100

    Replace hex values with chars.

commit dc1084d122
Merge: 2bce444b 2c7163ea
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Mon Feb 1 13:53:27 2021 +0100

    Merge branch 'dtmf_events_over_ng_tcp' of github.com:enreached/rtpengine into dtmf_events_over_ng_tcp

commit 2bce444b26
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Mon Feb 1 13:28:06 2021 +0100

    Prevent use after free.

commit 5a256fd3ae
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Fri Jan 29 13:30:31 2021 +0100

    Add missing includes.

commit a14f4034b9
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Fri Jan 29 13:27:27 2021 +0100

    Add support for sending DTMF events via protocol NG TCP.

commit b861fe3087
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Thu Jan 28 18:09:10 2021 +0100

    Add missing include.

commit 7bfe08fb08
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Thu Jan 28 18:05:44 2021 +0100

    Implementation of control-ng via TCP.

commit 2c7163eaf3
Merge: fd286813 9165bf1f
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Mon Feb 1 13:49:00 2021 +0100

    Merge branch 'dtmf_events_over_ng_tcp' of github.com:enreached/rtpengine into dtmf_events_over_ng_tcp

commit fd28681350
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Fri Jan 29 10:20:02 2021 -0500

    TT#14008 fix AEAD kernel API for < 4.2

    Untested whether it actually works

    closes #1176

    Change-Id: If6398632ac62525a673b844cfb4ce842a8aa0346

commit 0626dcdd96
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Fri Jan 29 13:07:25 2021 -0500

    TT#14008 improve log output for stray packets

    Change-Id: Ic4b03928b279aade761de3ba1646b5c27318e6a3

commit 8fcccb77cc
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Mon Feb 1 13:28:06 2021 +0100

    Prevent use after free.

commit f0d90d1831
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Fri Jan 29 13:30:31 2021 +0100

    Add missing includes.

commit 37462b8e4d
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Fri Jan 29 13:27:27 2021 +0100

    Add support for sending DTMF events via protocol NG TCP.

commit 9165bf1f75
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Mon Feb 1 13:28:06 2021 +0100

    Prevent use after free.

commit d616f2941f
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Fri Jan 29 13:30:31 2021 +0100

    Add missing includes.

commit bb063386c6
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Fri Jan 29 13:27:27 2021 +0100

    Add support for sending DTMF events via protocol NG TCP.

commit b28ab07532
Merge: 813a4f1c 6e4373af
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Fri Jan 29 09:21:31 2021 +0100

    Merge branch 'control_ng_tcp' of github.com:enreached/rtpengine into control_ng_tcp

commit 813a4f1caa
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Thu Jan 28 18:09:10 2021 +0100

    Add missing include.

commit 0c87a19c55
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Thu Jan 28 18:05:44 2021 +0100

    Implementation of control-ng via TCP.

commit 6e4373affb
Merge: fbf74bfe 7799f23a
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Fri Jan 29 09:19:46 2021 +0100

    Merge branch 'control_ng_tcp' of github.com:enreached/rtpengine into control_ng_tcp

commit fbf74bfe2d
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Wed Jan 27 10:18:14 2021 -0500

    TT#14008 fix possible segfault

    closes #1172

    Change-Id: I94bb52c290c2032073e54528283660f03e694033

commit 1a5bcc0905
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Thu Jan 28 14:49:43 2021 -0500

    TT#109251 fix redis restore segfault

    Change-Id: I501a47b065e7b8ff28a3ac157c0ce567f228557f

commit b38b49fd60
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Thu Jan 28 13:44:44 2021 -0500

    TT#102450 added tests for Ia9fa96cf

    Change-Id: Ic9728e12a012335c30c5640ac0b5c88e39ad24ed

commit f33877bfe3
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Thu Jan 28 13:43:46 2021 -0500

    TT#102450 fix some timestamping issues

    Make sure G.722 rate multiplies is applied in the right places

    Don't trust encoders to return proper timestamps, but instead track them
    explicitly based on frame duration

    Change-Id: Ia9fa96cf662da97159fa170c3a3f37516889e1bd

commit 39a25b954d
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Thu Jan 28 14:07:53 2021 -0500

    TT#106101 mem leak fix for 554034eb7e

    Change-Id: I9c410211580d8513a203a29f898970a78175d08b

commit 11d11aed90
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Thu Jan 28 13:41:28 2021 -0500

    TT#14008 clean up some tests

    Looks like packet order can be an issue in some cases

    Change-Id: Ib8fb8c553c9d0f2919b24dda1e15e5a23832c619

commit 7799f23aa5
Merge: ba7ee9d6 e191e16c
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Fri Jan 29 09:18:24 2021 +0100

    Merge branch 'master' of https://github.com/sipwise/rtpengine into control_ng_tcp

commit ba7ee9d6b1
Merge: f805d881 ffe187f1
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Thu Jan 28 18:15:58 2021 +0100

    Merge branch 'control_ng_tcp' of github.com:enreached/rtpengine into control_ng_tcp

commit f805d881fa
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Thu Jan 28 18:09:10 2021 +0100

    Add missing include.

commit c548a3ca4b
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Thu Jan 28 18:05:44 2021 +0100

    Implementation of control-ng via TCP.

commit ffe187f116
Author: Damir Nedžibović <damir.nedzibovic@bad-team.net>
Date:   Thu Jan 28 18:05:44 2021 +0100

    Implementation of control-ng via TCP.

Change-Id: I8383fa80bce59aa865009e34caff5263b97ab588

Change-Id: Id1f464794089f4de4ffce4914703b588ef0045a3

closes #1134

commit 1cdf8d5084
Merge: 2fc54462 cc4d049f
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Mon Feb 1 11:19:43 2021 -0500

    Merge branch 'jb_disable' of https://github.com/balajeesv/rtpengine into balajeesv-jb_disable

    Change-Id: Ic01bbeb776d8ac0f3ebb46ae0a263243828443bb

commit cc4d049fab
Merge: 2f935206 9deedea1
Author: balajeesv <balajee.sv@gmail.com>
Date:   Fri Dec 11 23:15:48 2020 +0530

    Merge branch 'jb_disable' of https://github.com/balajeesv/rtpengine into jb_disable

commit 2f935206de
Merge: f553a9e5 7c3d2e01
Author: Balajee SV <41125423+balajeesv@users.noreply.github.com>
Date:   Fri Dec 11 23:12:27 2020 +0530

    Merge branch 'master' into jb_disable

commit 9deedea1c4
Merge: f553a9e5 7c3d2e01
Author: Balajee SV <41125423+balajeesv@users.noreply.github.com>
Date:   Fri Dec 11 23:12:27 2020 +0530

    Merge branch 'master' into jb_disable

commit f553a9e582
Author: balajeesv <balajee.sv@gmail.com>
Date:   Fri Dec 11 22:47:46 2020 +0530

    rtpengine: Disable jitter-buffer per call in offer

Change-Id: Ib4443a0d66c78749e24f3d2cb48c991e408e21fd

closes #1180

commit 023f6cbc9e
Merge: ae82034d 86e287d1
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Mon Feb 1 11:16:04 2021 -0500

    Merge branch 'control_ng_tcp' of https://github.com/enreached/rtpengine into enreached-control_ng_tcp

    Change-Id: I628dcfd30e901dbee97b00bee0b6bba0cb29826f

commit 86e287d117
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Mon Feb 1 16:38:53 2021 +0100

    Update the readme file.

commit 35f5d9e151
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Mon Feb 1 16:20:09 2021 +0100

    Update docs.

commit 336deb4c67
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Mon Feb 1 14:28:07 2021 +0100

    Replace hex values with chars.

commit 37c86a8fa0
Merge: 17a10b96 5cd53ef1
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Mon Feb 1 13:51:06 2021 +0100

    Merge branch 'control_ng_tcp' of github.com:enreached/rtpengine into control_ng_tcp

commit 17a10b96ad
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Thu Jan 28 18:09:10 2021 +0100

    Add missing include.

commit adfddefae3
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Thu Jan 28 18:05:44 2021 +0100

    Implementation of control-ng via TCP.

commit 5cd53ef1c9
Merge: 1bd3a8fc b28ab075
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Mon Feb 1 13:49:50 2021 +0100

    Merge branch 'control_ng_tcp' of github.com:enreached/rtpengine into control_ng_tcp

commit 1bd3a8fc6d
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Fri Jan 29 10:20:02 2021 -0500

    TT#14008 fix AEAD kernel API for < 4.2

    Untested whether it actually works

    closes #1176

    Change-Id: If6398632ac62525a673b844cfb4ce842a8aa0346

commit 71a222d7a8
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Fri Jan 29 13:07:25 2021 -0500

    TT#14008 improve log output for stray packets

    Change-Id: Ic4b03928b279aade761de3ba1646b5c27318e6a3

commit b28ab07532
Merge: 813a4f1c 6e4373af
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Fri Jan 29 09:21:31 2021 +0100

    Merge branch 'control_ng_tcp' of github.com:enreached/rtpengine into control_ng_tcp

commit 813a4f1caa
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Thu Jan 28 18:09:10 2021 +0100

    Add missing include.

commit 0c87a19c55
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Thu Jan 28 18:05:44 2021 +0100

    Implementation of control-ng via TCP.

commit 6e4373affb
Merge: fbf74bfe 7799f23a
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Fri Jan 29 09:19:46 2021 +0100

    Merge branch 'control_ng_tcp' of github.com:enreached/rtpengine into control_ng_tcp

commit fbf74bfe2d
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Wed Jan 27 10:18:14 2021 -0500

    TT#14008 fix possible segfault

    closes #1172

    Change-Id: I94bb52c290c2032073e54528283660f03e694033

commit 1a5bcc0905
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Thu Jan 28 14:49:43 2021 -0500

    TT#109251 fix redis restore segfault

    Change-Id: I501a47b065e7b8ff28a3ac157c0ce567f228557f

commit b38b49fd60
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Thu Jan 28 13:44:44 2021 -0500

    TT#102450 added tests for Ia9fa96cf

    Change-Id: Ic9728e12a012335c30c5640ac0b5c88e39ad24ed

commit f33877bfe3
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Thu Jan 28 13:43:46 2021 -0500

    TT#102450 fix some timestamping issues

    Make sure G.722 rate multiplies is applied in the right places

    Don't trust encoders to return proper timestamps, but instead track them
    explicitly based on frame duration

    Change-Id: Ia9fa96cf662da97159fa170c3a3f37516889e1bd

commit 39a25b954d
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Thu Jan 28 14:07:53 2021 -0500

    TT#106101 mem leak fix for 554034eb7e

    Change-Id: I9c410211580d8513a203a29f898970a78175d08b

commit 11d11aed90
Author: Richard Fuchs <rfuchs@sipwise.com>
Date:   Thu Jan 28 13:41:28 2021 -0500

    TT#14008 clean up some tests

    Looks like packet order can be an issue in some cases

    Change-Id: Ib8fb8c553c9d0f2919b24dda1e15e5a23832c619

commit 7799f23aa5
Merge: ba7ee9d6 e191e16c
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Fri Jan 29 09:18:24 2021 +0100

    Merge branch 'master' of https://github.com/sipwise/rtpengine into control_ng_tcp

commit ba7ee9d6b1
Merge: f805d881 ffe187f1
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Thu Jan 28 18:15:58 2021 +0100

    Merge branch 'control_ng_tcp' of github.com:enreached/rtpengine into control_ng_tcp

commit f805d881fa
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Thu Jan 28 18:09:10 2021 +0100

    Add missing include.

commit c548a3ca4b
Author: Damir Nedžibović <damir.nedzibovic@enreach.com>
Date:   Thu Jan 28 18:05:44 2021 +0100

    Implementation of control-ng via TCP.

commit ffe187f116
Author: Damir Nedžibović <damir.nedzibovic@bad-team.net>
Date:   Thu Jan 28 18:05:44 2021 +0100

    Implementation of control-ng via TCP.

Change-Id: I2acf208fcff1fa9aa790c31f1097ad9b4b7c3238

Change-Id: Ifed6d255dd9d3ec5bc38a79a8f71da59d98243ea

Change-Id: Ic4b03928b279aade761de3ba1646b5c27318e6a3

closes #1172

Change-Id: I94bb52c290c2032073e54528283660f03e694033

Change-Id: I501a47b065e7b8ff28a3ac157c0ce567f228557f

Make sure G.722 rate multiplies is applied in the right places

Don't trust encoders to return proper timestamps, but instead track them
explicitly based on frame duration

Change-Id: Ia9fa96cf662da97159fa170c3a3f37516889e1bd

Change-Id: I9c410211580d8513a203a29f898970a78175d08b

Eliminates duplicated codecs when `opus/48000/1` is used for example

Change-Id: If434e34fe75883544cf6c2c83723af73878ccb20

When set to `false`, no changes at all. (default)
When set to `true`, bind only one desired family local address.

Also add info in rtpengine.pod file.
Also add log for sfd with no call.

Change-Id: I1c54b6410d492a2dbd7169f000c84ecebf9d817c

Change-Id: I7f192fda512d90b0ab05ff4856891eb0f348a157

Change-Id: Idf66a2528d06830247e71038a9616726afd588c4

Change-Id: I6b16474d505a40055b06d215e4cc6c5391214613

Change-Id: I81fa68b07af3a87e26d031a5722dcd103a1e620e

Change-Id: I6d8e443d8b0fc7e9afe0a6f6b3cde3d1a85e42de

Change-Id: I0ee1af3d41ea2f6484daffae0c2c0e1c8a25ef45

Change-Id: Ia9b83bf7a0989ec2e20ac0d8ea9a1024a8f5d417

Change-Id: I94eceb0946605f270279be519f156ff9c905ce54

Change-Id: I3d1be408e8b16ec0b3a92fce9c4fe2969a8968c9

Change-Id: I223d69016b5e6328f1124a6a977c46d008b667dc

Also amends tests plus additional clean ups

Closes #1133

Change-Id: I0dad7b8aad9cff1b019323c7ac5a356830ab09ad

close PR #1133

Squashed commit of:

commit b5009eff0b
Author: SPChan <shihping.chan@gmail.com>
Date:   Fri Dec 11 11:40:17 2020 +0800

    crypto.c: handle 12 bytes master salt length of AEAD

    AEAD RFC7714 specifies 12 bytes master salt length
    (section 12) but the KDF expects 14 bytes.

    The erratum to RFC7714 specifies to pad on the right
    by 16 bits to be compliant with the KDF.

    https://www.rfc-editor.org/errata_search.php?rfc=7714

commit 30ba71f10c
Author: SPChan <shihping.chan@gmail.com>
Date:   Fri Dec 11 09:31:00 2020 +0800

    crypto.c: AEAD make clear which operations are for AAD

commit 3e4d87681d
Author: SPChan <shihping.chan@gmail.com>
Date:   Thu Dec 10 19:38:51 2020 +0800

    Implement RFC7714 ciphers: AEAD AES

    Initial userspace only implementation

Change-Id: I8624b255e4fd83a5ca418655ef117c48e56e2379

Change-Id: I383645d874f17a128385aae8a0f1e3f7f9b99ff3

Change-Id: I636a234c066922c2db604787057320b62105a0d4

If a supplemental codec was removed by the codec tracker, we must reset
any codec handlers on the opposite side that were using this output
codec.

Change-Id: I7fb9d0ec7a061682fe3b28d9ead14ac263aff7c3

Change-Id: I93587b6675540438f81193896ae8d8966b3a12a6

Change-Id: I52b602961c2e60f5e73576bcea8e9af47528111a

Change-Id: Icebd5a5d8f1ab159f7343b8036e36322b1211e8a

closes #1162

Change-Id: I02b81a6f9d9fd6910ce6ed2995bfba16d59b027e

Change-Id: I3ac399a7041aa04847fd4a35a9c0f12a2a0a8ce3

Change-Id: Ib5615f15cefa23ac093115318f84cf712f735322

Sequence of events:

1) HTTP request is being handled in worker thread by calling the handler
   func() from within websocket_process().
2) Handler func generates output, queues it up, and requests a
   `writeable` callback from within websocket_write_raw().
3) Main LWS thread triggers writeable callback and calls
   websocket_dequeue().
4) Output is given to LWS still within the main LWS thread, and finally
   lws_http_transaction_completed() is called to release the connection
   and ready it for the next HTTP connection.
5) LWS internally cleans up the connection and frees the user context
   (our `wc` struct).
6) The worker thread wakes up and continues to use the now invalid `wc`
   in order to clean up after it has done its job. Boom.

The solution is to handle the `drop protocol` callback, which is
triggered by LWS in the main LWS thread in step 4 from within
lws_http_transaction_completed(). We call our own connection cleanup
function websocket_conn_cleanup() which blocks until all jobs are
removed from `wc` (step 6) and only then continue, allowing LWS to
safely free the struct.

Change-Id: I596a98e9b552a96aef259f4523f16fa63c287ef4

closes #1159

Change-Id: Idf177b3e9d674d220b9c73a46ecd58453c6e3b39

closes #1156

Change-Id: I44e50f6968b6792a2ff57d1d14fede6db0d4f1d5

Change-Id: I8c759d74c8091dd302399c3e72939fa43688f655

closes #1152

Change-Id: I3c6ac0e57128dfc567cecb3e7c952b5c96175f84

Change-Id: Ife458bd2449f61113a3e6db1708821570d92dc23

Change-Id: I545f306e0f16dc71e20e10ebd419795275f7e3b2

closes #1136

Change-Id: I692cd15daf57bb95c5592099713bdc46338d4321