[Serusers] SER 0.8.12 malformed outgoing packets with some UA

Dear List, Some new UA device we are testing is causing strange behaviour of SER. When INVITE is forwarded by our SIP proxy (using SER 0.8.12 cvs + Radius backend), it contains some garbage characters and IP packet lenght is disrupted. Packet is cut on exact lenght of 1478 bytes (some MTU limit of 1500 bytes here???) See little debug below (I can send full debug on priv address). Notice the additional "."'s before INVITE and garbage in address line (U xx -> zz:5060 414@0:1480): I double checked SER log in debug mode, there are no differences between this abnormal situation and normal INVITE proxying, with other UA devices. Initial buffers are set to high values and nothing can go wrong.. Is this some bug in SER? Note: adresses were changed to xxx,yyy and so on: U xx -> yy:5060 SIP/2.0 100 trying -- your call is important to us.. Via: SIP/2.0/UDP yy:5060;branch=z9hG4bKDB20B3494FE0C715E1DA2AB3390D.. From: <sip:vvv@xx>;tag=6817B284750F6B75621571A17923.. To: <sip:www@xx>.. Call-ID: E5A4F1BBFB9D021B58C6B6440CB3@yy.. CSeq: 18 INVITE.. Server: Sip EXpress router (0.8.12-1rc6 (i386/freebsd)).. Content-Length: 0.. Warning: [...omited...] # U xx -> zz:5060 414@0:1480 <-- NOTICE garbage here ........INVITE sip:www@xxx SIP/2.0.. <-- NOTICE "dots" here Record-Route: <sip:www@xxx;ftag=6817B284750F6B75621571A17923;lr=on>.. Via: SIP/2.0/UDP xxx;branch=z9hG4bK8bef.e7a84e21.0.. Via: SIP/2.0/UDP yyy:5060;branch=z9hG4bKDB20B3494FE0C715E1DA2AB3390D.. From: <sip:vvv@xxx>;tag=6817B284750F6B75621571A17923.. To: <sip:www@xxx>.. Call-ID: E5A4F1BBFB9D021B58C6B6440CB3@yyy.. CSeq: 18 INVITE.. Contact: <sip:vvv@yyy;uniq=BE4F86E6E5C314AE11701C942248>.. Authorization: [...omited...] Max-Forwards: 69.. User-Agent: [...omited...] Supported: 100rel, replaces.. Allow-Events: telephone-event.. Allow-Events: refer.. Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, UPDATE, PRACK, INFO, SUBSCRIBE, NOTIFY, REFER.. Content-Type: application/sdp.. Accept: application/sdp.. Accept-Encoding: identity.. Content-Length: 418.. .. v=0.. o=user 20040204 20040204 IN IP4 yyy.. s=call.. c=IN IP4 yyy.. t=1114074899 1114078499.. m=audio 7078 RTP/AVP 8 0 2 102 100 99 18 101 13.. a=rtpmap:8 PCMA/8000.. a=rtpmap:0 PCMU/8000.. a=rtpmap:2 G726-32/8000.. a=rtpmap:102 G726-32/8000.. a=rtpmap:100 G726-40/8000.. a=rtpmap:99 G726-24/8000.. a=rtpmap:18 G729/8000.. a=rtpmap:101 telephone-event/8000.. a=fmtp:101 0-11.. a=rtpmap:13 CN/8000.. a=rt <--- NOTICE packet is cut here at 1478 bytes ######################################## U zzz:5060 -> xxx:5060 SIP/2.0 100 Trying.. Via: SIP/2.0/UDP xxx;branch=z9hG4bK8bef.e7a84e21.0.. Via: SIP/2.0/UDP yy:5060;branch=z9hG4bKDB20B3494FE0C715E1DA2AB3390D.. From: <sip:vvv@xxx>;tag=6817B284750F6B75621571A17923.. To: <sip:www@xxx>;tag=as7a954f71.. Call-ID: E5A4F1BBFB9D021B58C6B6440CB3@yyy.. CSeq: 18 INVITE.. User-Agent: [...omited...].. Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER..Contact: <sip:www@zzz>.. Content-Length: 0.. .. Here is tcpdump of this situation (note the packet lenght error): --------------------------------------------------------------------------- Packet 5 Timestamp: 01:00:07.969419 (0.068520) Source Ethernet Address: 00:00:5E:00:01:01 (<unknown>) Destination Ethernet Address: 00:E0:1E:DF:AE:82 (<unknown>) Encapsulated Protocol: IP IP Header Version: 4 Header Length: 20 bytes Service Type: 0x10 Datagram Length: 614 bytes Identification: 0x45FE Flags: MF=off, DF=off Fragment Offset: 0 TTL: 64 Encapsulated Protocol: UDP Header Checksum: 0xDF42 Source IP Address: xxx Destination IP Address: yyy UDP Header Source Port: 5060 (<unknown>) Destination Port: 5060 (<unknown>) Datagram Length: 594 bytes (Header=8, Data=586) Checksum: 0xB306 UDP Data SIP/2.0 100 trying -- your call is important to us. Via: SIP/2.0/UDP yyy:5060;branch=z9hG4bK003971715 B46D0300099FFA02356. From: <sip:vvv@xxx>;tag=3085BFD5D9E8D8717CD 04F54A2A5. To: <sip:www@xxx>. Call-ID: 37C1AE7089D5A7FA8302B724D791@yyy. CSeq: 13 INVITE. Server: Sip EXpress router (0.8.12-1rc6 (i386/freebsd)). Content-Length: 0. Warning: [...omited...]. . --------------------------------------------------------------------------- Packet 6 Timestamp: 01:00:07.969683 (0.000264) Source Ethernet Address: 00:00:5E:00:01:01 (<unknown>) Destination Ethernet Address: 00:0C:6E:A5:38:55 (<unknown>) Encapsulated Protocol: IP IP Header Version: 4 Header Length: 20 bytes Service Type: 0x10 Datagram Length: 1500 bytes Identification: 0xCBCD Flags: MF=on, DF=off Fragment Offset: 0 TTL: 64 Encapsulated Protocol: UDP Header Checksum: 0x3A55 Source IP Address: xxx Destination IP Address: zzz <*** Packet length corrupt ***> --------------------------------------------------------------------------- --------------------------------------------------------------------------- Packet 7 Timestamp: 01:00:07.971393 (0.001710) Source Ethernet Address: 00:0C:6E:A5:38:55 (<unknown>) Destination Ethernet Address: 00:00:5E:00:01:01 (<unknown>) Encapsulated Protocol: IP IP Header Version: 4 Header Length: 20 bytes Service Type: 0x10 Datagram Length: 538 bytes Identification: 0x00DE Flags: MF=off, DF=on Fragment Offset: 0 TTL: 64 Encapsulated Protocol: UDP Header Checksum: 0xE906 Source IP Address: zzz Destination IP Address: xxx UDP Header Source Port: 5060 (<unknown>) Destination Port: 5060 (<unknown>) Datagram Length: 518 bytes (Header=8, Data=510) Checksum: 0xF96E UDP Data SIP/2.0 100 Trying. Via: SIP/2.0/UDP xxx;branch=z9hG4bK487e.541ff4c2 .0. Via: SIP/2.0/UDP yyy:5060;branch=z9hG4bK003971715 B46D0300099FFA02356. From: <sip:vvv@xxx>;tag=3085BFD5D9E8D8717CD 04F54A2A5. To: <sip:www@xxx>;tag=as2f2ca5dd. Call-ID: 37C1AE7089D5A7FA8302B724D791@yyy CSeq: 13 INVITE. User-Agent: Perceval Voicemail Server Idun. Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER. Contact: <sip:www@zzz>. Content-Length: 0. . Thanks for help... Regards, Arek Bekiersz arek(a)perceval.net ------------------------------------------------------------------------ Perceval Technologies sa/nv Rue Tenbosch, 9 B-1000 Brussels Tel: +32-2-6409194 (ext.213) Fax: +32-2-6403154 URL: http://www.perceval.net/ E-mail for general informations: info(a)perceval.net E-mail for technical informations: helpdesk(a)perceval.net ------------------------------------------------------------------------ This e-mail message contains legally PRIVILEGED and CONFIDENTIAL information intended for the use of the addressee only. 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