<p>When using Kamailio from the master branch, I'm encountering an issue where IPv6 contact address aliases that are added via <code>set_contact_alias()</code> for WebSocket connections (for example) are unquoted and create problems for Asterisk:</p>
<pre><code>pjsip:0 <?>: sip_transport. Error processing 3633 bytes packet from UDP 10.0.0.1:5060 : PJSIP syntax error exception when parsing 'Request Line' header on line 11 col 129:
</code></pre>
<p>and TOPOH garbles the Request-URI when processing the ACK:</p>
<pre><code>WARNING: sanity [sanity.c:236]: check_ruri_scheme(): failed to parse request
uri [�a�{1me▒s�na@50�9���1.�8:�2v0;i��a��=11>7�n7x>10O�2v0~1]
</code></pre>
<p>I have tested this with CSipSimple nightly branch (PJSIP) Asterisk 13.2.0 (PJSIP), Google Chrome 41.0.2272.118, and Firefox 37 and all fail to handle the Contact alias parameter properly.</p>
<p>An example of an invite that shows this issue follows (this INVITE is without TOPOH on).</p>
<pre><code>INVITE sip:testuser@example.com SIP/2.0
Record-Route: <sip:10.0.0.1;r2=on;lr=on;ftag=t5r2736hf9;nat=yes>
Record-Route: <sip:[2001:db8::98]:5061;transport=ws;r2=on;lr=on;ftag=t5r2736hf9;nat=yes>
Via: SIP/2.0/UDP 10.0.0.1;branch=z9hG4bKa3e8.2bb6508fbc0cf8cc55c1eb6c0eca0b38.0
Via: SIP/2.0/WSS 2e6orc23ptjv.invalid;rport=43691;received=2001:db8::99;branch=z9hG4bK450538
Max-Forwards: 69
To: <sip:testuser@example.com>
From: "WS Test User 1" <sip:wstest1@example.com>;tag=t5r2736hf9
Call-ID: uugmpjgjpoklrnf0um56
CSeq: 7244 INVITE
Contact: <sip:wstest1@example.com;gr=urn:uuid:2e54e8a2-66e4-433a-a024-b57f3665a44b;alias=[2001:db8::99]~43691~6>
Allow: ACK,CANCEL,BYE,OPTIONS,INFO,NOTIFY,INVITE
Content-Type: application/sdp
Supported: gruu,outbound
User-Agent: SIP.js/0.6.4
Content-Length: 2768
v=0
o=- 867554869709517848 2 IN IP4 10.0.0.1
s=-
t=0 0
a=msid-semantic: WMS livWfUwMWQJMemgnFyBQDf1VXUo9Q0AXwHnH
m=audio 30158 RTP/SAVP 111 103 104 9 0 8 106 105 13 126
c=IN IP4 10.0.0.1
a=rtpmap:111 opus/48000/2
a=fmtp:111 minptime=10; useinbandfec=1
a=rtpmap:103 ISAC/16000
a=rtpmap:104 ISAC/32000
a=rtpmap:9 G722/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:106 CN/32000
a=rtpmap:105 CN/16000
a=rtpmap:13 CN/8000
a=rtpmap:126 telephone-event/8000
a=maxptime:60
a=ssrc:1444733772 cname:CuBdEZ9bIWQc1sE+
a=ssrc:1444733772 msid:livWfUwMWQJMemgnFyBQDf1VXUo9Q0AXwHnH ebd0066b-73b9-467c-b696-36e0fa7d72b7
a=ssrc:1444733772 mslabel:livWfUwMWQJMemgnFyBQDf1VXUo9Q0AXwHnH
a=ssrc:1444733772 label:ebd0066b-73b9-467c-b696-36e0fa7d72b7
a=sendrecv
a=rtcp:30159
a=rtcp-mux
a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:/fmyETo1BwAlupltb64sy5Za6e37BW0p5jMmvqHU
a=setup:actpass
a=fingerprint:sha-1 76:27:60:1E:64:94:B4:6E:8A:64:72:2D:41:2C:B8:F3:FF:4C:1D:56
a=ice-ufrag:U4XlaM4U
a=ice-pwd:HqnTPTU5DY3j1yB4XVEL9rs1tn
a=candidate:vVzo18e51E8EXCNy 1 UDP 2130706431 10.0.0.1 30158 typ host
a=candidate:vVzo18e51E8EXCNy 2 UDP 2130706430 10.0.0.1 30159 typ host
a=candidate:xCpWH2paVucFSQXn 1 UDP 2130706175 2001:db8::1 30158 typ host
a=candidate:xCpWH2paVucFSQXn 2 UDP 2130706174 2001:db8::1 30159 typ host
m=video 30196 RTP/SAVP 100 116 117 96
c=IN IP4 10.0.0.1
a=rtpmap:100 VP8/90000
a=rtcp-fb:100 ccm fir
a=rtcp-fb:100 nack
a=rtcp-fb:100 nack pli
a=rtcp-fb:100 goog-remb
a=rtpmap:116 red/90000
a=rtpmap:117 ulpfec/90000
a=rtpmap:96 rtx/90000
a=fmtp:96 apt=100
a=ssrc-group:FID 616715905 3177427003
a=ssrc:616715905 cname:CuBdEZ9bIWQc1sE+
a=ssrc:616715905 msid:livWfUwMWQJMemgnFyBQDf1VXUo9Q0AXwHnH bb5df7ec-28a9-4e94-89a3-2ebb45a9f5bb
a=ssrc:616715905 mslabel:livWfUwMWQJMemgnFyBQDf1VXUo9Q0AXwHnH
a=ssrc:616715905 label:bb5df7ec-28a9-4e94-89a3-2ebb45a9f5bb
a=ssrc:3177427003 cname:CuBdEZ9bIWQc1sE+
a=ssrc:3177427003 msid:livWfUwMWQJMemgnFyBQDf1VXUo9Q0AXwHnH bb5df7ec-28a9-4e94-89a3-2ebb45a9f5bb
a=ssrc:3177427003 mslabel:livWfUwMWQJMemgnFyBQDf1VXUo9Q0AXwHnH
a=ssrc:3177427003 label:bb5df7ec-28a9-4e94-89a3-2ebb45a9f5bb
a=sendrecv
a=rtcp:30197
a=rtcp-mux
a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:qQRmOwum0YFHgKKzt2dRX0uAQhSwlmxscI3P3JUI
a=setup:actpass
a=fingerprint:sha-1 76:27:60:1E:64:94:B4:6E:8A:64:72:2D:41:2C:B8:F3:FF:4C:1D:56
a=ice-ufrag:ISaptX08
a=ice-pwd:mxP343kHexU8SwtbCeRj4WyMNI
a=candidate:vVzo18e51E8EXCNy 1 UDP 2130706431 10.0.0.1 30196 typ host
a=candidate:vVzo18e51E8EXCNy 2 UDP 2130706430 10.0.0.1 30197 typ host
a=candidate:xCpWH2paVucFSQXn 1 UDP 2130706175 2001:db8::1 30196 typ host
a=candidate:xCpWH2paVucFSQXn 2 UDP 2130706174 2001:db8::1 30197 typ host
</code></pre>
<p>I believe that the Contact header alias parameter might need quotes in order to properly handle the bracketed IPv6 alias address, something like the following, but unfortunately I haven't been able to find evidence to be certain that this is the fix, though I do notice that parameters in headers with special characters like brackets are often quoted.</p>
<pre><code>Contact: <sip:wstest1@example.com;gr=urn:uuid:2e54e8a2-66e4-433a-a024-b57f3665a44b;alias="[2001:db8::99]~43691~6">
</code></pre>
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