> -----Original Message----- > From: Bill Gardner > Subject: Re: Possible bug (Buffer overflow) - PJSUA unable to handle > SIP message sent via Cisco 8510 MCU when registered to a Cisco VCS via > TCP/TLS > > Hi, > > Try increasing PJSIP_MAX_PKT_LEN (default 4000). I think you may be > going over that, the SDP is 2660 bytes and the header has a lot of > Record-Route lines. I find it surprising that it works correctly using UDP. > > Bill > Thanks Bill. I added the line: # define PJSIP_MAX_PKT_LEN 6000 To the config_site.h file and re-compiled, then re-tested. This time all SIP calls from various types of MCU through the VCSs worked as expected. Many thanks for this. Can I take it that we may well have been on the cusp of a buffer limit with the default setting, hence the reason why it worked with UDP but not TCP? With some MCUs (an SD Cisco 8420) we also previously also received a "Bad SDP" error, but this too has disappeared. What are the downsides of increasing the buffer size? I have chosen 6000 as an arbitrary figure, but is this too much? Many thanks Chris
