On 06/06/2016 at 04:40 PM, Richard Mudgett wrote: > On Sun, Jun 5, 2016 at 3:48 AM, Michael Maier <[email protected]> wrote: > >> Hello! >> >> I occasionally can see warnings like these during *idle* times in >> asterisk log (asterisk 13.7.2): >> >> [2016-06-05 06:11:51] WARNING[27817] pjsip: sip_transactio Unable to >> register REGISTER transaction (key xists) >> [2016-06-05 06:11:51] WARNING[27817] pjsip: sip_transactio Unable to >> register REGISTER transaction (key exists) >> >> Nothing more. The third REGISTER package works as expected. >> >> >> What's going on: >> My phone regularly (each 7.5 minutes) sends REGISTER. Sometimes, those >> REGISTERs are denied like seen above (mostly already the second REGISTER >> works and no third REGISTER is needed). >> >> The reRegistering of the phone normally works like this (as seen in >> wireshark): >> >> -> REGISTER 06:04:19:285 >> <- 401 Unauthorized 06:04:19:287 >> -> REGISTER 06:04:19:316 >> <- 200 OK 06:04:19:376 >> >> >> If warnings happen like the one mentioned above, the following can be >> seen in wireshark: >> >> -> REGISTER 06:11:49:359 >> <- 401 Unauthorized 06:11:49:362 >> -> REGISTER 06:11:49:392 Unable ... >> -> REGISTER 06:11:49:876 Unable ... >> -> REGISTER 06:11:50:868 >> <- 200 OK 06:11:51:634 >> >> The second, third and fourth register package look completely identical >> to me according wireshark regarding SIP. >> >> Notice the big latency between the fourth register and the following 200 >> OK: there are nearly 0.8 seconds in between in the problem case - but >> normally, there are just 0.06 seconds between REGISTER and 200 OK! >> >> What happened during these 0.8 seconds? Asterisk (and the complete >> machine) has been completely idle at this time - there wasn't any call >> or anything other to process. >> >> I've got the complete wireshark trace of the situation described above. >> > > Those key exist messages are due to a race condition. From what I've
It should be impossible - there couldn't be any race condition at this time. > seen in the code the messages seem to be benign. > > How may endpoints are registering to your Asterisk? 1 device, which registers 2 different numbers *serially*. Asterisk didn't do any other things at the time those warnings came up. It was idle. Completely. > How often? Each 7.5 minutes. > Do you use realtime? No. Regards, Michael -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
