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Richard Fuchs 9653546f7c TT#107157 fix LWS HTTP handling crash ... 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		6 years ago
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.gitignore	…
.ycm_extra_conf.py	…
Makefile	…
aux.c	…
bencode.c	…
call.c	TT#97301 support granular log levels	6 years ago
call_interfaces.c	TT#14008 support repeat-times in media player	6 years ago
cdr.c	…
cli.c	TT#97301 support granular log levels	6 years ago
codec.c	TT#97301 support granular log levels	6 years ago
control_ng.c	TT#97301 support granular log levels	6 years ago
control_tcp.c	TT#97301 support granular log levels	6 years ago
control_udp.c	TT#97301 support granular log levels	6 years ago
cookie_cache.c	…
crypto.c	TT#97301 support granular log levels	6 years ago
dtls.c	TT#97301 support granular log levels	6 years ago
dtmf.c	…
graphite.c	…
homer.c	…
ice.c	TT#97301 support granular log levels	6 years ago
iptables.c	…
jitter_buffer.c	…
kernel.c	…
load.c	…
log.c	…
log.h	TT#97301 support granular log levels	6 years ago
log_funcs.h	…
loglevels.h	TT#97301 support granular log levels	6 years ago
main.c	TT#97301 support granular log levels	6 years ago
media_player.c	TT#14008 support repeat-times in media player	6 years ago
media_socket.c	TT#14008 fix possible null pointer	6 years ago
poller.c	…
recording.c	TT#14008 fix possible pcap namespace issue	6 years ago
redis.c	TT#97301 support granular log levels	6 years ago
rtcp.c	TT#14008 skip over non-ASCII characters in JSON output	6 years ago
rtp.c	…
rtpengine.pod	TT#97301 support granular log levels	6 years ago
sdp.c	…
ssrc.c	…
statistics.c	…
stun.c	…
t38.c	TT#97301 support granular log levels	6 years ago
tcp_listener.c	…
timerthread.c	…
udp_listener.c	…
websocket.c	TT#107157 fix LWS HTTP handling crash	6 years ago