Sorry.
This is my code for filtering :
"request_route {
xerr("Before filter_body"); if (filter_body("application/sdp")) { xerr("Filtered with sucess"); } else { xerr("Filtering failed");} "
The log is the following :
"2021-06-02T16:13:53.396443+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <script>: Before filter_body 2021-06-02T16:13:53.396677+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:275]: parse_sip_header_name(): invalid end of header name for [--unique-bound] 2021-06-02T16:13:53.396886+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:266]: parse_sip_header_name(): invalid header name for [pplication/sdp] 2021-06-02T16:13:53.397141+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:236]: parse_sip_header_name(): invalid start of header name for [#015#012v=0#015#012o=- 184] 2021-06-02T16:13:53.397337+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:266]: parse_sip_header_name(): invalid header name for [v=0#015#012o=- 18454] 2021-06-02T16:13:53.397527+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:266]: parse_sip_header_name(): invalid header name for [o=- 1845407145] 2021-06-02T16:13:53.397716+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:266]: parse_sip_header_name(): invalid header name for [s=-#015#012c=IN IP4 ] 2021-06-02T16:13:53.397914+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:266]: parse_sip_header_name(): invalid header name for [c=IN IP4 212.1] 2021-06-02T16:13:53.398154+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:266]: parse_sip_header_name(): invalid header name for [t=0 0#015#012m=audio] 2021-06-02T16:13:53.398346+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:266]: parse_sip_header_name(): invalid header name for [m=audio 22138 ] 2021-06-02T16:13:53.398548+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:266]: parse_sip_header_name(): invalid header name for [a=rtpmap:101 t] 2021-06-02T16:13:53.398813+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:266]: parse_sip_header_name(): invalid header name for [a=rtpmap:96 CL] 2021-06-02T16:13:53.399037+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:236]: parse_sip_header_name(): invalid start of header name for [#015#012--unique-bou] 2021-06-02T16:13:53.399230+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:275]: parse_sip_header_name(): invalid end of header name for [--unique-bound] 2021-06-02T16:13:53.399428+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:266]: parse_sip_header_name(): invalid header name for [pplication/ISU] 2021-06-02T16:13:53.399621+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:275]: parse_sip_header_name(): invalid end of header name for [Content-Dispos] 2021-06-02T16:13:53.399815+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:236]: parse_sip_header_name(): invalid start of header name for [#015#012#001] 2021-06-02T16:13:53.400028+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:236]: parse_sip_header_name(): invalid start of header name for [#001] 2021-06-02T16:13:53.400234+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <core> [core/parser/parse_hname2.c:275]: parse_sip_header_name(): invalid end of header name for [--unique-bound] 2021-06-02T16:13:53.400427+01:00 dev_sbc_a_vts01 /usr/local/kamailio-5.4/sbin/kamailio[2740]: ERROR: <script>: Filtering failed "
I've also attached the packet body :
"Message Body MIME Multipart Media Encapsulation, Type: multipart/mixed, Boundary: "unique-boundary-1" [Type: multipart/mixed] First boundary: --unique-boundary-1\r\n Encapsulated multipart part: (application/sdp) Content-Type:application/sdp\r\n\r\n Session Description Protocol Session Description Protocol Version (v): 0 Owner/Creator, Session Id (o): - 1845407145 1 IN IP4 1.1.1.1 Session Name (s): - Connection Information (c): IN IP4 1.1.1.1 Time Description, active time (t): 0 0 Media Description, name and address (m): audio 22138 RTP/AVP 8 0 18 3 13 101 96 Media Attribute (a): rtpmap:101 telephone-event/8000 Media Attribute (a): rtpmap:96 CLEARMODE/8000 Boundary: \r\n--unique-boundary-1\r\n Encapsulated multipart part: (application/isup) Content-Type:application/ISUP;base=itu-t92+;version=itu-t\r\n Content-Disposition:signal;handling=required\r\n\r\n ISDN User Part Message Type: Initial address (1) Nature of Connection Indicators : 0x0 Forward Call Indicators : 0x6001 Calling Party's category : 0xa (ordinary calling subscriber) Transmission medium requirement : 0 (speech) Called Party NumberCalled Party Number: 222222222 Pointer to start of optional part: 10 Parameter: (t=10, l=8) Calling party number: Calling party numberCalling Party Number: 333333333 Parameter: (t=192, l=9) Generic number: Generic numberGeneric Number: 333333333 End of optional parameters (0) Last boundary: \r\n--unique-boundary-1--\r\n"
If more info or testing is needed please let me know.