Hi All,
We are using PJMEDIA for implementing multi-party call conference. The signaling is done using Sofia-sip. We create a conference bridge for every new call. The stream for the call is then added to the conference bridge. On making a couple of calls, a crash is encountered. We suspect this is during the release of the pj pool that was created. When the verbose log level was increased, the frequency of crash was however reduced. Also, the implementation worked consistently when run in debug mode.
Below are the details of our implementation:
1. Media initialization - A caching pool(pj_caching_pool_init) and media endpoint(pjmedia_endpt_create) is created. Memory pool(pj_pool_create) for conference purpose is also created. The conference bridge with sound port is created and connected to tone generator.
2. A session pool is further created, codecs to use are obtained; the RTP stream for the call is created and added to the conference bridge, also connected to sound device and tone generator.
3. When the call is disconnected, all the connections in the conference bridge are removed. The stream is destroyed using pjmedia_stream_destroy. pj_pool_release function is called to release the session pool.
4. The conference bridge is then destroyed. The conference pool is released, media endpoint and caching pool are destroyed; pj_shutdown is called.
I am listing the call stack when the crash was encountered:
> sip-soft-client-cli.exe!free(void * pBlock=0x0012fbb0) Line 110 C
sip-soft-client-cli.exe!default_block_free(pj_pool_factory * factory=0x0012ffb0, void * mem=0x00463650, unsigned int size=4136128086) Line 78 + 0x6 bytes C
sip-soft-client-cli.exe!pj_mutex_unlock(pj_mutex_t * mutex=0x01dc0048) Line 964 C
sip-soft-client-cli.exe!default_block_free(pj_pool_factory * factory=0x00a72b08, void * mem=0x01dc004c, unsigned int size=12288) Line 78 + 0x6 bytes C
sip-soft-client-cli.exe!pj_pool_destroy_int(pj_pool_t * pool=0x01dc004c) Line 288 + 0x8 bytes C
sip-soft-client-cli.exe!cpool_release_pool(pj_pool_factory * pf=0x00a72b08, pj_pool_t * pool=0x01dc004c) Line 235 C
sip-soft-client-cli.exe!pj_pool_release(pj_pool_t * pool=0x01dc004c) Line 92 + 0x7 bytes C
We have followed the PJMEDIA Reference documentation for our implementation. Any suggestion or direction to solve the issue would be greatly appreciated.
Thanks,
Amritha
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