### Description Hi. Seems lime that after WSS in the VIA kamailio adds double SPACE It makes kamailio incompatable with jssip.net (tried 5.1.2 and 5.0.6 versions) Looks like this happens with advertise address added on the interface #### Reproduction Just connect to kamailio via WSS with advertized address and try to make incoming call into WSS client #### Debugging Data I just put this link to JsSIP.net here https://groups.google.com/forum/#!topic/jssip/2lDyqgvZgrY Also here is a string of my VIA header that gives issue SIP/2.0/WSS ​1.2.3.4:5061;branch=z9hG4bKd302.4c862421515641e7b59b9f3ba7f8eab4.1 Thant can be checked here https://www.textmagic.com/free-tools/unicode-detector Log INVITE from the browser (only added \r\n at the end of the each string because of notepad++ not shows it after copying): INVITE sip:2hsq8ob4@daotd6p7hil4.invalid;transport=ws SIP/2.0\r\n Record-Route: <sip:1.2.3.4:5061;transport=ws;r2=on;lr;ftag=as7c4d457d;nat=yes>\r\n Record-Route: <sip:1.2.3.4;r2=on;lr;ftag=as7c4d457d;nat=yes>\r\n Via: SIP/2.0/WSS ​1.2.3.4:5061;branch=z9hG4bK110e.476a7e8aa7db8de3a4d7b01aed1e7ef5.1\r\n Via: SIP/2.0/UDP 10.1.1.138:5060;rport=5060;branch=z9hG4bK7122bcfb\r\n Max-Forwards: 69\r\n From: "test" <sip:test@10.1.1.138>;tag=as7c4d457d\r\n To: <sip:test2@10.1.1.38:5060>\r\n Contact: <sip:test@10.1.1.138:5060>\r\n Call-ID: 2ec6d77f5a56ca0f59ab0d2118d2f7d5@10.1.1.138:5060\r\n CSeq: 102 INVITE\r\n User-Agent: Asterisk PBX 15.3.0\r\n Date: Mon, 02 Apr 2018 10:30:57 GMT\r\n Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE\r\n Supported: replaces, timer\r\n Content-Type: application/sdp\r\n Content-Length: 642\r\n \r\n v=0\r\n o=root 1538180518 1538180518 IN IP4 1.2.3.4\r\n s=Asterisk PBX 15.3.0\r\n c=IN IP4 1.2.3.4\r\n t=0 0\r\n a=group:BUNDLE audio\r\n m=audio 31858 RTP/SAVPF 8 0 101\r\n a=maxptime:150\r\n a=rtpmap:8 PCMA/8000\r\n a=rtpmap:0 PCMU/8000\r\n a=rtpmap:101 telephone-event/8000\r\n a=fmtp:101 0-16\r\n a=sendrecv\r\n a=rtcp:31859\r\n a=rtcp-mux\r\n a=setup:actpass\r\n a=mid:audio\r\n a=fingerprint:sha-1 95:6F:40:F2:76:B3:E3:1E:DA:29:04:60:F1:F7:0A:DA:5E:D4:67:9F\r\n a=ice-ufrag:eSuU9ztd\r\n a=ice-pwd:j693abw9QWiaX81TlbvyHBD8FU\r\n a=candidate:5Qp8pvPCHLmm6iUU 1 UDP 2130706431 1.2.3.4 31858 typ host\r\n a=candidate:5Qp8pvPCHLmm6iUU 2 UDP 2130706430 1.2.3.4 31859 typ host\r\n Actually i did not found any information about is it MUST be only one sace at the Grammar of SIP message based on RFC 2234 but I may be wrong. ``` #### SIP Traffic <!-- If the issue is exposed by processing specific SIP messages, grab them with ngrep or save in a pcap file, then add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). --> ``` (paste your sip traffic here) ``` ### Possible Solutions <!-- If you found a solution or workaround for the issue, describe it. Ideally, provide a pull request with a fix. --> ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` (paste your output here) ``` * **Operating System**: <!-- Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...; Kernel details (output of `uname -a`) --> ``` (paste your output here) ``` -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/1491