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0.14 

git-svn-id: file:///home/ksmith/gitmigration/svn/xmpp/trunk@1501 4b5297f7-1745-476d-ba37-a9c6900126ab
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Peter Saint-Andre 2008-01-02 21:00:46 +00:00
parent 0b548410a9
commit cd7823791e
1 changed files with 79 additions and 10 deletions
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89
xep-0176.xml
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@ -27,6 +27,12 @@
&stpeter;
&hildjj;
&seanegan;
<revision>
<version>0.14</version>
<date>2008-01-02</date>
<initials>psa</initials>
<remark><p>Modified flow for ICE completion to require content-modify from initiator to responder, thus mapping to sending of revised offer in SIP; added rem-addr and rem-port attributes to map to a=remote-candidates information in SDP; changed raddr and rport attributes to rel-addr and rel-port to prevent confusion with rem-addr and rem-port attributes.</p></remark>
</revision>
<revision>
<version>0.13</version>
<date>2007-12-28</date>
@ -173,10 +179,10 @@ INITIATOR RESPONDER
|<-----------------------------------|
| STUN Binding Result |
|----------------------------------->|
| Jingle content-accept |
|<-----------------------------------|
| Jingle ack (XMPP IQ-result) |
| Jingle content-modify |
|----------------------------------->|
| Jingle ack (XMPP IQ-result) |
|<-----------------------------------|
| Jingle session-accept |
|<-----------------------------------|
| Jingle ack (XMPP IQ-result) |
@ -298,17 +304,29 @@ INITIATOR RESPONDER
<td>asd88fgpdd777uzjYhagZg</td>
</tr>
<tr>
<td>raddr</td>
<td>rel-addr</td>
<td>A related address as defined in &icecore;.</td>
<td>Raddr value in a=candidate line</td>
<td>raddr value in a=candidate line</td>
<td>10.0.1.1</td>
</tr>
<tr>
<td>rport</td>
<td>rel-port</td>
<td>A related port as defined in &icecore;.</td>
<td>Rport value in a=candidate line</td>
<td>rport value in a=candidate line</td>
<td>8998</td>
</tr>
<tr>
<td>rem-addr</td>
<td>A IP address for a remote address as defined in &icecore;.</td>
<td>connection-address value in a=remote-candidates line</td>
<td>192.0.2.1</td>
</tr>
<tr>
<td>rem-port</td>
<td>The port for a remote address as defined in &icecore;.</td>
<td>port value in a=remote-candidates line</td>
<td>3478</td>
</tr>
<tr>
<td>type</td>
<td>A Candidate Type as defined in &icecore;. The allowable values are "host" for host candidates, "prflx" for peer reflexive candidates, "relay" for relayed candidates, and "srflx" for server reflexive candidates.</td>
@ -497,7 +515,56 @@ INITIATOR NAT RESPONDER
<p>Note: The initiator (controlling agent) is using "aggressive nomination" as described in Section 8.1.1.2 of &icecore; and therefore includes the USE-CANDIDATE attribute in the STUN Binding Requests it sends.</p>
</section2>
<section2 topic='Acceptance of Successful Candidate' anchor='protocol-acceptance'>
<p>If, based on STUN connectivity checks, the parties determine that they will be able to exchange media a given candidate, the responder sends a &JINGLE; element with an action of 'content-accept' (or 'session-accept') to the initiator, specifying the candidate that succeeded.</p>
<p>If, based on STUN connectivity checks, the parties determine that they will be able to exchange media between a given pair of local candidates and remote candidates (i.e., the pair is "nominated" and ICE processing is "completed"), the parties shall proceed as follows:</p>
<ol>
<li>The initiator sends a Jingle content-modify action to the responder.</li>
<li>The responder acknowledges receipt of the content-modify.</li>
<li>The responder sends a Jingle content-accept or session-accept action to the initiator.</li>
<li>The initiator acknowledges receipt of the content-accept.</li>
</ol>
<p>First the initiator sends a Jingle content-modify action to the responder. The content-modify MUST contain information about the nominated pair, including the "rem-addr" and "rem-port" attributes (which specify the IP address and port for the responder's end of the pair, which is a "remote address" according to the initiator).</p>
<example caption="Responder requests content-modify"><![CDATA[
<iq from='romeo@montague.lit/orchard'
id='mod1'
to='juliet@capulet.lit/balcony'
type='set'>
<jingle xmlns='http://www.xmpp.org/extensions/xep-0166.html#ns'
action='content-modify'
initiator='romeo@montague.lit/orchard'
sid='a73sjjvkla37jfea'>
<content creator='initiator' name='this-is-the-audio-content' profile='RTP/AVP'>
<description xmlns='http://www.xmpp.org/extensions/xep-0167.html#ns'>
[ ... ]
</description>
<transport xmlns='http://www.xmpp.org/extensions/xep-0176.html#ns'>
<candidate component='1'
foundation='1'
generation='0'
ip='192.0.2.3'
network='1'
port='45664'
priority='1694498815'
protocol='udp'
pwd='asd88fgpdd777uzjYhagZg'
rel-addr='10.0.1.1'
rel-port='8998'
rem-addr='192.0.2.1'
rem-port='3478'
type='srflx'
ufrag='8hhy'/>
</transport>
</content>
</jingle>
</iq>
]]></example>
<p>The responder then acknowledges the content-modify action.</p>
<example caption="Responder acknowledges content-modify"><![CDATA[
<iq from='juliet@capulet.lit/balcony'
id='mod1'
to='romeo@montague.lit/orchard'
type='result'/>
]]></example>
<p>The responder then sends a &JINGLE; element with an action of 'content-accept' (or 'session-accept') to the initiator, specifying the candidate that succeeded.</p>
<example caption="Responder definitively accepts the successful candidate"><![CDATA[
<iq from='juliet@capulet.com/balcony'
id='accept1'
@ -522,8 +589,10 @@ INITIATOR NAT RESPONDER
priority='1694498815'
protocol='udp'
pwd='asd88fgpdd777uzjYhagZg'
raddr='10.0.1.1'
rport='8998'
rel-addr='10.0.1.1'
rel-port='8998'
rem-addr='192.0.2.1'
rem-port='3478'
type='srflx'
ufrag='8hhy'/>
</transport>