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Code Issues Releases Wiki Activity

1.2rc2

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stpeter 2011-02-17 19:40:36 -07:00
parent 7a0e302d58
commit cbb116b86c
1 changed files with 19 additions and 10 deletions
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xep-0198.xml
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@ -30,8 +30,8 @@
&dcridland; &dcridland;
&mwild; &mwild;
<revision> <revision>
<version>1.2rc1</version> <version>1.2rc2</version>
<date>2011-02-11</date> <date>2011-02-17</date>
<initials>psa/dc/mw</initials> <initials>psa/dc/mw</initials>
<remark><p>Simplification based on implementation experience: removed acking per number of stanzas exchanged because either entity can request an ack at any time; moved throttling feature to a separate specification; removed 'stanzas' attribute from &lt;enable/&gt; element; added 'location' attribute to &lt;enabled/&gt; element; clarified several implementation issues in the text; fixed several examples; versioned the XML namespace from urn:xmpp:sm:2 to urn:xmpp:sm:3.</p></remark> <remark><p>Simplification based on implementation experience: removed acking per number of stanzas exchanged because either entity can request an ack at any time; moved throttling feature to a separate specification; removed 'stanzas' attribute from &lt;enable/&gt; element; added 'location' attribute to &lt;enabled/&gt; element; clarified several implementation issues in the text; fixed several examples; versioned the XML namespace from urn:xmpp:sm:2 to urn:xmpp:sm:3.</p></remark>
</revision> </revision>
@ -204,7 +204,7 @@ S: <enabled xmlns='urn:xmpp:sm:3'/>
S: <enabled xmlns='urn:xmpp:sm:3' id='some-long-sm-id' resume='true'/> S: <enabled xmlns='urn:xmpp:sm:3' id='some-long-sm-id' resume='true'/>
]]></example> ]]></example>
<p>The &lt;enabled/&gt; element MAY include a 'max' attribute to specify the receiving entity's preferred maximum resumption time.</p> <p>The &lt;enabled/&gt; element MAY include a 'max' attribute to specify the receiving entity's preferred maximum resumption time.</p>
<p>The &lt;enabled/&gt; element MAY include a 'location' attribute to specify the receiving entity's preferred IP address or hostname (optionally with a port) for reconnection; if reconnection to that location fails, the standard XMPP connection algorithm specified in &xmppcore; applies.</p> <p>The &lt;enabled/&gt; element MAY include a 'location' attribute to specify the receiving entity's preferred IP address or hostname (optionally with a port) for reconnection, in the form specified in Section 4.9.3.19 of &rfc3920bis; (i.e., "domainpart:port", where IPv6 addresses are enclosed in square brackets "[...]" as described in &rfc5952;); if reconnection to that location fails, the standard XMPP connection algorithm specified in &xmppcore; applies.</p>
<p>The initiating entity MUST NOT attempt to negotiate stream management until it is authenticated; i.e., it MUST NOT send an &lt;enable/&gt; element until after authentication (such as SASL, &xep0078; or &xep0220;) has been completed successfully.</p> <p>The initiating entity MUST NOT attempt to negotiate stream management until it is authenticated; i.e., it MUST NOT send an &lt;enable/&gt; element until after authentication (such as SASL, &xep0078; or &xep0220;) has been completed successfully.</p>
<p>For client-to-server connections, the client MUST NOT attempt to enable stream management until after it has completed Resource Binding <em>unless it is resuming a previous session</em> (see <link url='#resumption'>Resumption</link>).</p> <p>For client-to-server connections, the client MUST NOT attempt to enable stream management until after it has completed Resource Binding <em>unless it is resuming a previous session</em> (see <link url='#resumption'>Resumption</link>).</p>
<p>The server SHALL enforce this order and return a &lt;failed/&gt; element in response if the order is violated (see <link url='#errors'>Error Handling</link>).</p> <p>The server SHALL enforce this order and return a &lt;failed/&gt; element in response if the order is violated (see <link url='#errors'>Error Handling</link>).</p>
@ -248,14 +248,15 @@ C: <message from='laurence@example.net/churchyard'
<!-- Note that client need not wait for a response. --> <!-- Note that client need not wait for a response. -->
S: <enabled xmlns='urn:xmpp:sm:3' location='cm66.example.net'/> S: <enabled xmlns='urn:xmpp:sm:3'/>
<!-- Server receives enable, and responds, <!--
setting both inbound and outbound counts Server receives enable, and responds,
to zero. setting both inbound and outbound counts
to zero.
In addition, client sets inbound count to zero. In addition, client sets inbound count to zero.
--> -->
C: <r xmlns='urn:xmpp:sm:3'/> C: <r xmlns='urn:xmpp:sm:3'/>
@ -283,8 +284,16 @@ C: <enable xmlns='urn:xmpp:sm:3' resume='true'/>
S: <enabled xmlns='urn:xmpp:sm:3' id='some-long-sm-id' resume='true'/> S: <enabled xmlns='urn:xmpp:sm:3' id='some-long-sm-id' resume='true'/>
]]></example> ]]></example>
<p class='def'><strong>Definition:</strong> The 'id' attribute defines a unique identifier for purposes of stream management (an "SM-ID"). The SM-ID MUST be generated by the receiving entity (server). The initiating entity MUST consider the SM-ID to be opaque and therefore MUST NOT assign any semantic meaning to the SM-ID. The receiving entity MAY encode any information it deems useful into the SM-ID, such as the full JID &LOCALFULL; of a connected client (e.g., the full JID plus a nonce value). Any characters allowed in an XML attribute are allowed. The SM-ID MUST NOT be reused for simultaneous or subsequent sessions (but the server need not ensure that SM-IDs are unique for all time, only for as long as the server is continuously running). The SM-ID SHOULD NOT be longer than 4000 bytes.</p> <p class='def'><strong>Definition:</strong> The 'id' attribute defines a unique identifier for purposes of stream management (an "SM-ID"). The SM-ID MUST be generated by the receiving entity (server). The initiating entity MUST consider the SM-ID to be opaque and therefore MUST NOT assign any semantic meaning to the SM-ID. The receiving entity MAY encode any information it deems useful into the SM-ID, such as the full JID &LOCALFULL; of a connected client (e.g., the full JID plus a nonce value). Any characters allowed in an XML attribute are allowed. The SM-ID MUST NOT be reused for simultaneous or subsequent sessions (but the server need not ensure that SM-IDs are unique for all time, only for as long as the server is continuously running). The SM-ID SHOULD NOT be longer than 4000 bytes.</p>
<p>As noted, the &lt;enabled/&gt; element MAY include a 'location' attribute that specifies the server's preferred location for reconnecting (e.g., a particular connection manager that hold session state for the connected client).</p>
<example caption='Server prefers reconnection at a particular location'><![CDATA[
S: <enabled xmlns='urn:xmpp:sm:3'
id='some-long-sm-id'
location='[2001:41D0:1:A49b::1]:9222'
resume='true'/>
]]></example>
<p>If the stream is terminated unexpectedly, the initiating entity would then open a TCP connection to the receiving entity. The order of events is as follows:</p> <p>If the stream is terminated unexpectedly, the initiating entity would then open a TCP connection to the receiving entity. The order of events is as follows:</p>
<ol start='1'> <ol start='1'>
<li>After disconnection, the initiating entity opens a new TCP connection to the receiving entity, preferring the address specified in the 'location' attribute (if any).</li>
<li>Initiating entity sends initial stream header.</li> <li>Initiating entity sends initial stream header.</li>
<li>Receiving entity sends response stream header.</li> <li>Receiving entity sends response stream header.</li>
<li>Receiving entity sends stream features.</li> <li>Receiving entity sends stream features.</li>