I use the SER 0.10.99 version. I want to modify the procedure of tm module. Before sending the request and forwarding the reply, I managed to modify the request and response, f.e, to insert another header into the request and response. In the request, it works correctly.But in the response, sometime it works, sometimes it failed. The debug log is as follows.
2(2196) old size: 784, new size: 869 2(2196) build_res_from_sip_res: copied size: orig:76, new: 161, rest: 708 msg= SIP/2.0 200 OK^M
P-Security-Nobody:Zgrrv1Y/19zYJGyKXm4obgHZZP5jY59qxbhLxEUgZO11uI41w1QzJKqSbjYQ6G7e/ViClnetse/aCE+dj/TbAZFQa45dL/wPzAS4MDKABos=^M /QjFhTWNKQaL8k=^M/*<90>*Via: SIP/2.0/UDP
192.168.0.19:5500;branch=z9hG4bK1648283653^M Record-Route: sip:192.168.0.19;ftag=549451184;lr^M From: sip:861111@sip.suntest.com;tag=81929894;tag=549451184^M To: sip:862222@sip.suntest.com;tag=882426148^M Call-ID: 903055665@192.168.0.19^M CSeq: 21 INVITE^M Contact: sip:862222@192.168.0.19:6600^M Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, SUBSCRIBE, NOTIFY, MESSAGE, INFO^M Content-Type: application/sdp^M Content-Length: 261^M ^M v=0^M o=nobody 20041028 20000001 IN IP4 192.168.0.19^M s=A call^M c=IN IP4 192.168.0.19^M t=1111396796 1111400396^M m=audio 7100 RTP/AVP 0 8^M a=rtpmap:0 PCMU/8000^M a=rtpmap:8 PCMA/8000^M m=video 7600 RTP/AVP 98 31^M a=rtpmap:98 H263/90000^M a=rtpmap:31 vf=4/CIF/1/768^M
I insert the header "P-Security-Nobody: " into the response using the modified version of function "append_hf_helper". There are some strange code in the backend of inserted header. f.e, the italic black characters in the log. I had added a null terminator at the tail of the inserted header.
I guess it is caused by the data_lump functions. Who can tell me the real reason of that?
Thanks for your kind help. Best Regards.
Sun Zongjun
Hi Sun Zongjun,
Note that most of string in ser are not null terminated, but kept with length. Most probably, when you insert the lump you give an invalid length.
Best regards, Marian
szj wrote:
I use the SER 0.10.99 version. I want to modify the procedure of tm module. Before sending the request and forwarding the reply, I managed to modify the request and response, f.e, to insert another header into the request and response. In the request, it works correctly.But in the response, sometime it works, sometimes it failed. The debug log is as follows.
2(2196) old size: 784, new size: 869 2(2196) build_res_from_sip_res: copied size: orig:76, new: 161, rest: 708 msg= SIP/2.0 200 OK^M
P-Security-Nobody:Zgrrv1Y/19zYJGyKXm4obgHZZP5jY59qxbhLxEUgZO11uI41w1QzJKqSbjYQ6G7e/ViClnetse/aCE+dj/TbAZFQa45dL/wPzAS4MDKABos=^M
/QjFhTWNKQaL8k=^M/*<90>*Via: SIP/2.0/UDP
192.168.0.19:5500;branch=z9hG4bK1648283653^M Record-Route: sip:192.168.0.19;ftag=549451184;lr^M From: sip:861111@sip.suntest.com;tag=81929894;tag=549451184^M To: sip:862222@sip.suntest.com;tag=882426148^M Call-ID: 903055665@192.168.0.19^M CSeq: 21 INVITE^M Contact: sip:862222@192.168.0.19:6600^M Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, SUBSCRIBE, NOTIFY, MESSAGE, INFO^M Content-Type: application/sdp^M Content-Length: 261^M ^M v=0^M o=nobody 20041028 20000001 IN IP4 192.168.0.19^M s=A call^M c=IN IP4 192.168.0.19^M t=1111396796 1111400396^M m=audio 7100 RTP/AVP 0 8^M a=rtpmap:0 PCMU/8000^M a=rtpmap:8 PCMA/8000^M m=video 7600 RTP/AVP 98 31^M a=rtpmap:98 H263/90000^M a=rtpmap:31 vf=4/CIF/1/768^M
I insert the header "P-Security-Nobody: " into the response using the modified version of function "append_hf_helper". There are some strange code in the backend of inserted header. f.e, the italic black characters in the log. I had added a null terminator at the tail of the inserted header.
I guess it is caused by the data_lump functions. Who can tell me the real reason of that?
Thanks for your kind help. Best Regards.
Sun Zongjun
Serusers mailing list serusers@lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers
Marian Dumitru wrote:
Hi Sun Zongjun,
Note that most of string in ser are not null terminated, but kept with length. Most probably, when you insert the lump you give an invalid length.
Hi, Marian:
Thanks very much for your kind instructions. You are absolutely right. I have corrected my code. Thanks again.
Best Regards.
Sun Zongjun
Best regards, Marian
szj wrote:
I use the SER 0.10.99 version. I want to modify the procedure of tm module. Before sending the request and forwarding the reply, I managed to modify the request and response, f.e, to insert another header into the request and response. In the request, it works correctly.But in the response, sometime it works, sometimes it failed. The debug log is as follows.
2(2196) old size: 784, new size: 869 2(2196) build_res_from_sip_res: copied size: orig:76, new: 161, rest: 708 msg= SIP/2.0 200 OK^M
P-Security-Nobody:Zgrrv1Y/19zYJGyKXm4obgHZZP5jY59qxbhLxEUgZO11uI41w1QzJKqSbjYQ6G7e/ViClnetse/aCE+dj/TbAZFQa45dL/wPzAS4MDKABos=^M
/QjFhTWNKQaL8k=^M/*<90>*Via: SIP/2.0/UDP
192.168.0.19:5500;branch=z9hG4bK1648283653^M Record-Route: sip:192.168.0.19;ftag=549451184;lr^M From: sip:861111@sip.suntest.com;tag=81929894;tag=549451184^M To: sip:862222@sip.suntest.com;tag=882426148^M Call-ID: 903055665@192.168.0.19^M CSeq: 21 INVITE^M Contact: sip:862222@192.168.0.19:6600^M Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, SUBSCRIBE, NOTIFY, MESSAGE, INFO^M Content-Type: application/sdp^M Content-Length: 261^M ^M v=0^M o=nobody 20041028 20000001 IN IP4 192.168.0.19^M s=A call^M c=IN IP4 192.168.0.19^M t=1111396796 1111400396^M m=audio 7100 RTP/AVP 0 8^M a=rtpmap:0 PCMU/8000^M a=rtpmap:8 PCMA/8000^M m=video 7600 RTP/AVP 98 31^M a=rtpmap:98 H263/90000^M a=rtpmap:31 vf=4/CIF/1/768^M
I insert the header "P-Security-Nobody: " into the response using the modified version of function "append_hf_helper". There are some strange code in the backend of inserted header. f.e, the italic black characters in the log. I had added a null terminator at the tail of the inserted header.
I guess it is caused by the data_lump functions. Who can tell me the real reason of that?
Thanks for your kind help. Best Regards.
Sun Zongjun
Serusers mailing list serusers@lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers
-
Marian Dumitru -
szj