I am running PJSIP over a TCP proxy on the iPhone. My app is getting killed with SBUnsuspendLimit exceeded 15 wakes in 300 seconds. I am about to file a bug report with Apple because I see no evidence of this in my application's log (where we capture all PSJIP messages at logging level 5). The application most recently crashed in the background after a flurry of these PJSIP messages: PLOG --> 2012-06-27 18:38:51.872 Star2Star[158:7303] SIP PJSIP message: 18:38:51.872 ioq_select UDP has been replaced successfully! PLOG --> 2012-06-27 18:38:51.872 Star2Star[158:7303] SIP PJSIP message: 18:38:51.872 ioq_select Attempting to replace UDP socket 45 PLOG --> 2012-06-27 18:38:51.872 Star2Star[158:7303] SIP PJSIP message: 18:38:51.872 ioq_select UDP has been replaced successfully! PLOG --> 2012-06-27 18:38:51.873 Star2Star[158:7303] SIP PJSIP message: 18:38:51.873 ioq_select Attempting to replace UDP socket 46 PLOG --> 2012-06-27 18:38:51.873 Star2Star[158:7303] SIP PJSIP message: 18:38:51.873 ioq_select UDP has been replaced successfully! I'm not reading this as a flurry of incoming packets on the SIP signaling socket, but since I don't know what this means I may be wrong. Can anybody tell me what this message means? For example, is it an indication of incoming I/O on the signaling socket that would account for an excessive number of background wakes??? -- Thomas Merriewether Star2Star Communications -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20120628/dc16cfb2/attachment-0001.html>