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<div class=Section1>
<p class=MsoNormal>Hello list,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal> <span
lang=EN-US>I need some light regarding the way asterisk is handling the SIP Registration
method: <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US> I
have an asterisk 1.6.0.22 and a UAC that sends REGISTER requests without the
Authentication part in the sip message. The UAC expects a 401 reply to create
the correct auth request.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> When
it receives an empty REGISTER asterisk does basically 2 things:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoListParagraph style='margin-left:53.25pt;text-indent:-18.0pt;
mso-list:l1 level1 lfo1'><![if !supportLists]><span lang=EN-US><span
style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>returns an 503<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'><--- SIP read from UDP://1.2.3.5:5060
---><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>REGISTER sip:1.2.3.4;user=phone SIP/2.0<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span style='font-size:9.0pt;
color:#595959'>Via:SIP/2.0/UDP 1.2.3.5:5060;rport;branch=z9hG4bK62F7FE99<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span style='font-size:9.0pt;
color:#595959'>From:<sip:123456789@1.2.3.4>;tag=3D090004<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span style='font-size:9.0pt;
color:#595959'>To:<sip:123456789@1.2.3.4><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span style='font-size:9.0pt;
color:#595959'>Call-ID:3D0807BC@<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>CSeq:53246 REGISTER<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>Max-Forwards:70<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>Contact:<sip:123456789@1.2.3.5:5060><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>Allow:INVITE,CANCEL,ACK,REGISTER,INFO,BYE,OPTIONS,REFER,NOTIFY,SUBSCRIBE,MESSAGE<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>Expires:60<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>User-Agent:OTHER UA<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>Content-Length:0<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'><-------------><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>--- (12 headers 0 lines) ---<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'><--- Transmitting (no NAT) to
1.2.3.5:5060 ---><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>SIP/2.0 503 Server error<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>Via: SIP/2.0/UDP
1.2.3.5:5060;rport;branch=z9hG4bK62F7FE99;received=1.2.3.5<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>From:
<sip:123456789@1.2.3.4>;tag=3D090004<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>To:
<sip:123456789@1.2.3.4>;tag=as7bb7cbf6<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>Call-ID: 3D0807BC@<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>CSeq: 53246 REGISTER<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>User-Agent: Asterisk 1.6.0.22<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>Allow: INVITE, ACK, CANCEL, OPTIONS, BYE,
REFER, SUBSCRIBE, NOTIFY, INFO<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>Supported: replaces, timer<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#595959'>Content-Length: 0<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt'><o:p> </o:p></span></p>
<p class=MsoListParagraph style='margin-left:53.25pt;text-indent:-18.0pt;
mso-list:l1 level1 lfo1'><![if !supportLists]><span lang=EN-US><span
style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>returns a 401 with the nonce<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'><--- SIP read from UDP://1.2.3.5:5060
---><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>REGISTER sip:1.2.3.4;user=phone SIP/2.0<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>Via:SIP/2.0/UDP
1.2.3.5:5060;rport;branch=z9hG4bK62F7FEA5<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>From:<sip:123456789@1.2.3.4>;tag=3D090008<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>To:<sip:123456789@1.2.3.4><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>Call-ID:3D0807BC@<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>CSeq:53248 REGISTER<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>Max-Forwards:70<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>Contact:<sip:123456789@1.2.3.5:5060><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>Allow:INVITE,CANCEL,ACK,REGISTER,INFO,BYE,OPTIONS,REFER,NOTIFY,SUBSCRIBE,MESSAGE<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>Expires:60<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>User-Agent:OTHER UA<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>Content-Length:0<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'><-------------><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>--- (12 headers 0 lines) ---<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>Sending to 1.2.3.5 : 5060 (no NAT)<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'><--- Transmitting (no NAT) to
1.2.3.5:5060 ---><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>SIP/2.0 401 Unauthorized<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>Via: SIP/2.0/UDP
1.2.3.5:5060;rport;branch=z9hG4bK62F7FEA5;received=1.2.3.5<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>From: <sip:123456789@1.2.3.4>;tag=3D090008<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>To:
<sip:123456789@1.2.3.4>;tag=as0811b2ee<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>Call-ID: 3D0807BC@<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>CSeq: 53248 REGISTER<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>User-Agent: Asterisk 1.6.0.22<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>Allow: INVITE, ACK, CANCEL, OPTIONS, BYE,
REFER, SUBSCRIBE, NOTIFY, INFO<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>Supported: replaces, timer<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>WWW-Authenticate: Digest algorithm=MD5,
realm="myrealm", nonce="6a08a09c"<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.25pt'><span lang=EN-US
style='font-size:9.0pt;color:#404040'>Content-Length: 0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:9.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The questions are: <o:p></o:p></span></p>
<p class=MsoListParagraph style='margin-left:71.4pt;text-indent:-18.0pt;
mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US
style='font-family:Symbol'><span style='mso-list:Ignore'>·<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>is asterisk supposed to return
the 401 to a REGISTER method which lacks the Auth Info? I saw that it returns
401 to REGISTER methods that have the wrong nonce and this behavior should be
correct.<o:p></o:p></span></p>
<p class=MsoListParagraph style='margin-left:71.4pt;text-indent:-18.0pt;
mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US
style='font-family:Symbol'><span style='mso-list:Ignore'>·<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>the Register method should
always contain the last nonce and the auth part?<o:p></o:p></span></p>
<p class=MsoListParagraph style='margin-left:71.4pt;text-indent:-18.0pt;
mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US
style='font-family:Symbol'><span style='mso-list:Ignore'>·<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>why the 503 message?<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:53.4pt'><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Thanks in advance,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Alex<o:p></o:p></span></p>
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