mirror of https://github.com/moparisthebest/xeps
0.17
git-svn-id: file:///home/ksmith/gitmigration/svn/xmpp/trunk@1777 4b5297f7-1745-476d-ba37-a9c6900126ab
This commit is contained in:
Peter Saint-Andre
parent
1f4af785cd
commit
c3a6f0abdd
145
xep-0176.xml
145
xep-0176.xml
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@ -27,6 +27,12 @@
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&stpeter;
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&hildjj;
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&seanegan;
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<revision>
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<version>0.17</version>
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<date>2008-03-20</date>
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<initials>psa</initials>
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<remark><p>Moved pwd and ufrag attributes from candidate element to transport element since they describe session-level or media-level information.</p></remark>
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</revision>
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<revision>
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<version>0.16</version>
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<date>2008-02-29</date>
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@ -203,7 +209,7 @@ INITIATOR RESPONDER
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]]></code>
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</section2>
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<section2 topic='Transport Initiation' anchor='protocol-initiate'>
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<p>In order for the initiator in a Jingle exchange to start the negotiation, it MUST send a Jingle "session-initiate" stanza as described in <cite>XEP-0166</cite>. A content type MUST include one transport method. If the initiator wishes to negotiate the ice-udp transport method for an application format, it MUST include an empty &TRANSPORT; child element qualified by the 'urn:xmpp:tmp:jingle:transports:ice-tcp' namespace &NSNOTE;.</p>
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<p>In order for the initiator in a Jingle exchange to start the negotiation, it MUST send a Jingle "session-initiate" stanza as described in <cite>XEP-0166</cite>. A content type MUST include one transport method. If the initiator wishes to negotiate the ice-udp transport method for an application format, it MUST include an empty &TRANSPORT; child element qualified by the 'urn:xmpp:tmp:jingle:transports:ice-udp' namespace &NSNOTE;.</p>
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<example caption="Initiation"><![CDATA[
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<iq from='romeo@montague.net/orchard'
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id='jingle1'
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@ -217,11 +223,34 @@ INITIATOR RESPONDER
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<description xmlns='urn:xmpp:tmp:jingle:apps:audio-rtp'>
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[ ... ]
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</description>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-tcp'/>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-udp'
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pwd='asd88fgpdd777uzjYhagZg'
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ufrag='8hhy'/>
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</content>
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</jingle>
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</iq>
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]]></example>
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<p>The 'pwd' and 'ufrag' attributes MUST be included in the session-initate request, in subsequent content-add and content-replace actions, and when offering candidates via the transport-info action. The attributes SHOULD NOT be included in a session-accept action. The values are separately generated for both the initiator and the receiver, in accordance with &icecore; and as shown in the examples. The attributes are defined as follows.</p>
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<table caption='Transport Attributes'>
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<tr>
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<th>Name</th>
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<th>Description</th>
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<th>SDP Syntax</th>
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<th>Example</th>
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</tr>
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<tr>
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<td>pwd</td>
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<td>A Password as defined in &icecore;.</td>
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<td>a=ice-pwd line</td>
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<td>asd88fgpdd777uzjYhagZg</td>
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</tr>
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<tr>
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<td>ufrag</td>
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<td>A User Fragment as defined in &icecore;.</td>
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<td>a=ice-ufrag line</td>
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<td>8hhy</td>
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</tr>
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</table>
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</section2>
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<section2 topic='Response' anchor='protocol-response'>
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<p>As described in <cite>XEP-0166</cite>, to acknowledge receipt of the session initiation request, the responder returns an IQ-result:</p>
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@ -247,9 +276,7 @@ INITIATOR RESPONDER
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port='8998'
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priority='2130706431'
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protocol='udp'
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pwd='asd88fgpdd777uzjYhagZg'
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type='host'
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ufrag='8hhy'/>
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type='host'/>
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]]></example>
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<p>The attributes of the <candidate/> element are described in the following table:</p>
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<table caption='Candidate Attributes'>
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@ -309,12 +336,6 @@ INITIATOR RESPONDER
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<td>Transport protocol field in a=candidate line</td>
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<td>udp</td>
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</tr>
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<tr>
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<td>pwd</td>
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<td>A Password as defined in &icecore;.</td>
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<td>a=ice-pwd line</td>
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<td>asd88fgpdd777uzjYhagZg</td>
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</tr>
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<tr>
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<td>rel-addr</td>
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<td>A related address as defined in &icecore;.</td>
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@ -345,12 +366,6 @@ INITIATOR RESPONDER
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<td>Typ field in a=candidate line</td>
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<td>srflx</td>
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</tr>
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<tr>
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<td>ufrag</td>
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<td>A User Fragment as defined in &icecore;.</td>
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<td>a=ice-ufrag line</td>
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<td>8hhy</td>
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</tr>
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</table>
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</section3>
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<section3 topic='Exchange of Candidates' anchor='protocol-candidates-exchange'>
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@ -368,7 +383,9 @@ INITIATOR RESPONDER
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initiator='romeo@montague.net/orchard'
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sid='a73sjjvkla37jfea'>
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<content creator='initiator' name='this-is-the-audio-content' profile='RTP/AVP'>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-tcp'>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-udp'
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pwd='asd88fgpdd777uzjYhagZg'
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ufrag='8hhy'>
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<candidate component='1'
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foundation='1'
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generation='0'
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@ -377,9 +394,7 @@ INITIATOR RESPONDER
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port='8998'
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priority='2130706431'
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protocol='udp'
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pwd='asd88fgpdd777uzjYhagZg'
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type='host'
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ufrag='8hhy'/>
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type='host'/>
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</transport>
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</content>
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</jingle>
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@ -394,7 +409,9 @@ INITIATOR RESPONDER
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initiator='romeo@montague.net/orchard'
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sid='a73sjjvkla37jfea'>
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<content creator='initiator' name='this-is-the-audio-content' profile='RTP/AVP'>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-tcp'>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-udp'
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pwd='asd88fgpdd777uzjYhagZg'
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ufrag='8hhy'>
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<candidate component='1'
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foundation='2'
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generation='0'
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@ -403,11 +420,9 @@ INITIATOR RESPONDER
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port='45664'
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priority='1694498815'
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protocol='udp'
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pwd='asd88fgpdd777uzjYhagZg'
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rel-addr='10.0.1.1'
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rel-port='8998'
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type='srflx'
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ufrag='8hhy'/>
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type='srflx'/>
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</transport>
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</content>
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</jingle>
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@ -436,7 +451,9 @@ INITIATOR RESPONDER
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initiator='romeo@montague.lit/orchard'
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sid='a73sjjvkla37jfea'>
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<content creator='initiator' name='this-is-the-audio-content' profile='RTP/AVP'>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-tcp-udp'>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-udp'
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pwd='YH75Fviy6338Vbrhrlp8Yh'
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ufrag='9uB6'>
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<candidate component='1'
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foundation='1'
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generation='0'
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@ -445,9 +462,7 @@ INITIATOR RESPONDER
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port='3478'
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priority='2130706431'
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protocol='udp'
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pwd='YH75Fviy6338Vbrhrlp8Yh'
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type='host'
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ufrag='9uB6'/>
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type='host'/>
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</transport>
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</content>
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</jingle>
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@ -548,7 +563,9 @@ INITIATOR NAT RESPONDER
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<description xmlns='urn:xmpp:tmp:jingle:apps:audio-rtp'>
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[ ... ]
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</description>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-tcp'>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-udp'
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pwd='asd88fgpdd777uzjYhagZg'
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ufrag='8hhy'>
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<candidate component='1'
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foundation='1'
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generation='0'
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@ -557,13 +574,11 @@ INITIATOR NAT RESPONDER
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port='45664'
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priority='1694498815'
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protocol='udp'
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pwd='asd88fgpdd777uzjYhagZg'
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rel-addr='10.0.1.1'
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rel-port='8998'
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rem-addr='192.0.2.1'
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rem-port='3478'
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type='srflx'
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ufrag='8hhy'/>
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type='srflx'/>
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</transport>
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</content>
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</jingle>
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@ -591,7 +606,7 @@ INITIATOR NAT RESPONDER
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<description xmlns='urn:xmpp:tmp:jingle:apps:audio-rtp'>
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[ ... ]
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</description>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-tcp'>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-udp'>
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<candidate component='1'
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foundation='1'
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generation='0'
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@ -600,13 +615,11 @@ INITIATOR NAT RESPONDER
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port='45664'
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priority='1694498815'
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protocol='udp'
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pwd='asd88fgpdd777uzjYhagZg'
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rel-addr='10.0.1.1'
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rel-port='8998'
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rem-addr='192.0.2.1'
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rem-port='3478'
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type='srflx'
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ufrag='8hhy'/>
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type='srflx'/>
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</transport>
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</content>
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</jingle>
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@ -647,7 +660,9 @@ INITIATOR NAT RESPONDER
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initiator='romeo@montague.net/orchard'
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sid='a73sjjvkla37jfea'>
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<content creator='initiator' name='this-is-the-audio-content' profile='RTP/AVP'>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-tcp'>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-udp'
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pwd='asd88fgpdd777uzjYhagZg'
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ufrag='8hhy'>
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<candidate component='1'
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foundation='1'
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generation='1'
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@ -656,9 +671,7 @@ INITIATOR NAT RESPONDER
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port='45665'
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priority='1694498815'
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protocol='udp'
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pwd='asd88fgpdd777uzjYhagZg'
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type='srflx'
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ufrag='8hhy'/>
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type='srflx'/>
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</transport>
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</content>
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</jingle>
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@ -686,7 +699,9 @@ INITIATOR NAT RESPONDER
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<description xmlns='urn:xmpp:tmp:jingle:apps:audio-rtp'>
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[ ... ]
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</description>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-tcp'>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-udp'
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pwd='asd88fgpdd777uzjYhagZg'
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ufrag='8hhy'>
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<candidate component='1'
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foundation='1'
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generation='1'
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@ -695,9 +710,7 @@ INITIATOR NAT RESPONDER
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port='45665'
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priority='1694498815'
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protocol='udp'
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pwd='asd88fgpdd777uzjYhagZg'
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type='srflx'
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ufrag='8hhy'/>
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type='srflx'/>
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</transport>
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</content>
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</jingle>
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@ -724,7 +737,9 @@ INITIATOR NAT RESPONDER
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initiator='romeo@montague.net/orchard'
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sid='a73sjjvkla37jfea'>
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<content creator='initiator' name='this-is-the-audio-content' profile='RTP/AVP'>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-tcp'>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-udp'
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pwd='asd88fgpdd777uzjYhagZg'
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ufrag='8hhy'>
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<candidate component='1'
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foundation='1'
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generation='0'
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@ -733,9 +748,7 @@ INITIATOR NAT RESPONDER
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port='9001'
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priority='21149780477'
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protocol='udp'
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pwd='asd88fgpdd777uzjYhagZg'
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type='host'
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ufrag='8hhy'/>
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type='host'/<
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</transport>
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</content>
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</jingle>
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@ -763,7 +776,9 @@ INITIATOR NAT RESPONDER
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<description xmlns='urn:xmpp:tmp:jingle:apps:audio-rtp' profile='RTP/AVP'>
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[ ... ]
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</description>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-tcp'>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-udp'
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pwd='asd88fgpdd777uzjYhagZg'
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ufrag='8hhy'>
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<candidate component='1'
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foundation='1'
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generation='0'
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@ -772,9 +787,7 @@ INITIATOR NAT RESPONDER
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port='9001'
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priority='21149780477'
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protocol='udp'
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pwd='asd88fgpdd777uzjYhagZg'
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type='host'
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ufrag='8hhy'/>
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type='host'/>
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</transport>
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</content>
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</jingle>
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@ -802,7 +815,9 @@ INITIATOR NAT RESPONDER
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<description xmlns='urn:xmpp:tmp:jingle:apps:audio-rtp'>
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[ ... ]
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</description>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-tcp'>
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<transport xmlns='urn:xmpp:tmp:jingle:transports:ice-udp'
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pwd='asd88fgpdd777uzjYhagZg'
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ufrag='8hhy'>
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<candidate component='1'
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foundation='1'
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generation='0'
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@ -811,9 +826,7 @@ INITIATOR NAT RESPONDER
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port='9001'
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priority='21149780477'
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protocol='udp'
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pwd='asd88fgpdd777uzjYhagZg'
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type='host'
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ufrag='8hhy'/>
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type='host'/>
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</transport>
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</content>
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</jingle>
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@ -831,7 +844,7 @@ INITIATOR NAT RESPONDER
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</section1>
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<section1 topic='Determining Support' anchor='support'>
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<p>If an entity supports the Jingle ice-udp transport, it MUST return a feature of "urn:xmpp:tmp:jingle:transports:ice-tcp" &NSNOTE; in response to &xep0030; information requests.</p>
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<p>If an entity supports the Jingle ice-udp transport, it MUST return a feature of "urn:xmpp:tmp:jingle:transports:ice-udp" &NSNOTE; in response to &xep0030; information requests.</p>
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<example caption="Service discovery information request"><![CDATA[
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<iq from='romeo@montague.net/orchard'
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id='disco1'
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@ -847,7 +860,7 @@ INITIATOR NAT RESPONDER
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type='result'>
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<query xmlns='http://jabber.org/protocol/disco#info'>
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...
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<feature var='urn:xmpp:tmp:jingle:transports:ice-tcp'/>
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<feature var='urn:xmpp:tmp:jingle:transports:ice-udp'/>
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...
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</query>
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</iq>
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@ -875,7 +888,7 @@ INITIATOR NAT RESPONDER
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<section2 topic='Protocol Namespaces' anchor='ns'>
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<p>Until this specification advances to a status of Draft, its associated namespaces shall be:</p>
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<ul>
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<li>urn:xmpp:tmp:jingle:transports:ice-tcp</li>
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<li>urn:xmpp:tmp:jingle:transports:ice-udp</li>
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</ul>
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<p>Upon advancement of this specification, the ®ISTRAR; shall issue permanent namespaces in accordance with the process defined in Section 4 of &xep0053;.</p>
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<p>The following namespaces are requested, and are thought to be unique per the XMPP Registrar's requirements:</p>
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@ -907,17 +920,17 @@ INITIATOR NAT RESPONDER
|
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|
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<xs:schema
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xmlns:xs='http://www.w3.org/2001/XMLSchema'
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targetNamespace='urn:xmpp:tmp:jingle:transports:ice-tcp'
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xmlns='urn:xmpp:tmp:jingle:transports:ice-tcp'
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targetNamespace='urn:xmpp:tmp:jingle:transports:ice-udp'
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xmlns='urn:xmpp:tmp:jingle:transports:ice-udp'
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elementFormDefault='qualified'>
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<xs:element name='transport'>
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<xs:complexType>
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<xs:choice>
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<xs:sequence>
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<xs:element ref='candidate' minOccurs='0' maxOccurs='1'/>
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</xs:sequence>
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</xs:choice>
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<xs:attribute name='pwd' type='xs:string' use='optional'/>
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<xs:attribute name='ufrag' type='xs:string' use='optional'/>
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</xs:complexType>
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</xs:element>
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@ -933,7 +946,6 @@ INITIATOR NAT RESPONDER
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<xs:attribute name='port' type='xs:unsignedShort' use='required'/>
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<xs:attribute name='priority' type='xs:positiveInteger' use='required'/>
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<xs:attribute name='protocol' type='xs:NCName' use='required'/>
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<xs:attribute name='pwd' type='xs:string' use='required'/>
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<xs:attribute name='rel-addr' type='xs:string' use='optional'/>
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<xs:attribute name='rel-port' type='xs:unsignedShort' use='optional'/>
|
||||
<xs:attribute name='rem-addr' type='xs:string' use='optional'/>
|
||||
|
|
@ -948,7 +960,6 @@ INITIATOR NAT RESPONDER
|
|||
</xs:restriction>
|
||||
</xs:simpleType>
|
||||
</xs:attribute>
|
||||
<xs:attribute name='ufrag' type='xs:string' use='required'/>
|
||||
</xs:extension>
|
||||
</xs:simpleContent>
|
||||
</xs:complexType>
|
||||
|
|
@ -964,6 +975,6 @@ INITIATOR NAT RESPONDER
|
|||
]]></code>
|
||||
</section1>
|
||||
<section1 topic='Acknowledgements' anchor='ack'>
|
||||
<p>Thanks to Steffen Larsen for his helpful feedback.</p>
|
||||
<p>Thanks to Steffen Larsen and Paul Witty for their comments.</p>
|
||||
</section1>
|
||||
</xep>
|
||||
|
|
|
|||
Loading…
Reference in New Issue