try these settings in your config_site.h:
PJ_IPHONE_OS_HAS_MULTITASKING_SUPPORT 1
PJ_ACTIVESOCK_TCP_IPHONE_OS_BG 0
Good luck,
Sebastian.
"pjsip" <pjsip-bounces@xxxxxxxxxxxxxxx> schrieb am 14.01.2018 18:22:50:
> Von: Gert Andreas <gert@xxxxxxxxxxx>
> An: pjsip@xxxxxxxxxxxxxxx
> Datum: 14.01.2018 18:23
> Betreff: [pjsip] iOS UDP/DNS issue, background/foreground crash
> Gesendet von: "pjsip" <pjsip-bounces@xxxxxxxxxxxxxxx>
>
> hey
> i’m working on an iOS app (iOS 11.2) with CallKit and PushKit that
> started with pjsip 2.7 and i recently upgraded to 2.7.1.
> i have several issues here. so any help is highly appreciated.
>
> since the app is using pushkit and connecting to a udp server is set
> PJ_IPHONE_OS_HAS_MULTITASKING_SUPPORT to 0. i first did this in
> xcode in the preprocessor macros. but since i’m not building the
> library with the app but separately i guess that didn’t really had
> the desired effect. but as i said. maybe i got something wrong so
> feel free to give some advice here.
>
> on startup as well as on connection changes i configure the
> pj_dns_resolver with the dns entries of the current connection and
> the standard google dns 8.8.8.8 and 8.8.4.4. all works well for some
> time but at some point the client is unable to connect reregister.
> (happens much faster when changing the cellular network cell.. like
> walking two blocks away. at least it seems like that) console output
> is as follows:
>
> ioq_select Error replacing socket: Invalid argument
>
> followed be a nice loop of: udp0x13ff4b6d0 Warning:
> pj_ioqueue_recvfrom: [err 120009] Bad file descriptor
> then i get something like: sip_transport.c Error processing 74
> bytes packet from UDP 8.8.8.8:53 : PJSIP syntax error exception when
> parsing 'Request Line' header on line 1 col 1: (same for the other DNSs)
>
> then: tsx0x14382d4a8 Failed to send Request msg REGISTER/cseq=61739
> (tdta0x1438668a8)! err=70009 (Operation timed out (PJ_ETIMEDOUT))
> pjsua_acc.c ..SIP registration failed, status=503 (Operation timed
> out (PJ_ETIMEDOUT))
> pjsua_acc.c !.Unable to create/send REGISTER: Object is busy
> (PJSIP_EBUSY) [status=171001]
>
> and ultimately
>
> ioq_select Error replacing socket: Invalid argument
> tsx0x10c811ca8 .Failed to send Request msg REGISTER/cseq=38540
> (tdta0x10b009ca8)! err=320046 (No working DNS nameserver
> (PJLIB_UTIL_EDNSNOWORKINGNS))
> pjsua_acc.c ...SIP registration failed, status=503 (No working DNS
> nameserver (PJLIB_UTIL_EDNSNOWORKINGNS))
>
> at least this worked somehow. but then i figured that setting
> PJ_IPHONE_OS_HAS_MULTITASKING_SUPPORT to 0 should have been done in
> the config_site.h if i’m right. so done that.. compiled the library.
> now i have the issue that when i switch the app between foreground
> and background everything ‘seems’ to be fine. but once i send the
> app to background, lock the device, unlock it again and trying to
> send the app to foreground again it crashes.
>
> what i see in the console in case i do this with the debugger attached is
>
> pjsua_acc.c Error sending keep-alive packet: Broken pipe [status=120032]
> followed by an endless loop of
> udp0x102b42740 Warning: pj_ioqueue_recvfrom: [err 120057] Socket is
> not connected
>
> as i said. maybe i’m getting something essentially wrong so any help
> is highly appreciated. if anyone needs more information feel free to
> ask and i happily provide them.
>
> thank you,
> gert
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