1.16 RC8 minor clarifications to Acknowledgements section

git-svn-id: file:///home/ksmith/gitmigration/svn/xmpp/trunk@618 4b5297f7-1745-476d-ba37-a9c6900126ab
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Ian Paterson 2007-02-27 20:21:41 +00:00
parent f5e7fa714d
commit 71b517188d
1 changed files with 3 additions and 3 deletions

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</section1>
<section1 topic='Acknowledgements' anchor='ack'>
<section2 topic='Request Acknowledgements' anchor='ack-request'>
<p>When responding to a request that it has been holding, if the connection manager has already received a request with a higher 'rid' attribute then it MAY acknowledge that fact to the client. The connection manager MAY set the 'ack' attribute of any response to the value of the highest 'rid' attribute it has received where it has also received all requests with lower 'rid' values.</p>
<p>When responding to a request that it has been holding, if the connection manager finds it has already received another request with a higher 'rid' attribute (typically while it was holding the first request), then it MAY acknowledge the reception to the client. The connection manager MAY set the 'ack' attribute of any response to the value of the highest 'rid' attribute it has received where it has also received all requests with lower 'rid' values.</p>
<example caption="Response with request acknowledgement">
<![CDATA[HTTP/1.1 200 OK
Content-Type: text/xml; charset=utf-8
@ -406,7 +406,7 @@ Content-Length: 64
<body ack='1249243564'
xmlns='http://jabber.org/protocol/httpbind'/>]]></example>
<p>If the connection manager will be including 'ack' attributes on responses during a session then it MUST include an 'ack' attribute in its session creation response, and set the 'ack' attribute of responses throughout the session. Except that, after its session creation response, the connection manager SHOULD NOT include an 'ack' attribute in any response if the value would be the 'rid' of the request being responded to.</p>
<p>If the connection manager is permitted to hold more than one request at a time, then the reception of a lower-than-expected 'ack' value from the connection manager (or the unexpected abscence of an 'ack' attribute) can give the client an early warning that a network failure might have occurred.</p>
<p>If the connection manager is permitted to hold more than one request at a time, then the reception of a lower-than-expected 'ack' value from the connection manager (or the unexpected abscence of an 'ack' attribute) can give the client an early warning that a network failure might have occurred (e.g., if the client believes the connection manager should have received the another request by the time it responded).</p>
</section2>
<section2 topic='Response Acknowledgements' anchor='ack-response'>
<p>The client MAY similarly inform the connection manager about the responses it has received by setting the 'ack' attribute of any request to the value of the highest 'rid' of a request for which it has already received a response where it has also received all responses associated with lower 'rid' values. If the client will be including 'ack' attributes on requests during a session then it MUST include an 'ack' attribute (set to '1') in its session creation request, and set the 'ack' attribute of requests throughout the session. Except that, after its session creation request, the client SHOULD NOT include an 'ack' attribute in any request if it has received responses to all its previous requests.</p>
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sid='SomeSID'
ack='1249243564'
xmlns='http://jabber.org/protocol/httpbind'/>]]></example>
<p>After receiving a request with an 'ack' value less than the 'rid' of the last request that it has already responded to, the connection manager MAY inform the client of the situation by sending its next response immediately (instead of waiting until it has stanzas to send to the client), including a 'report' attribute set to one greater than the 'ack' attribute it received from the client, and a 'time' attribute set to the number of milliseconds since it sent the response associated with the 'report' attribute.</p>
<p>After receiving a request with an 'ack' value less than the 'rid' of the last request that it has already responded to, the connection manager MAY inform the client of the situation by sending its next response immediately instead of waiting until it has stanzas to send to the client (e.g., if some time has passed since it responded). In this case it SHOULD include a 'report' attribute set to one greater than the 'ack' attribute it received from the client, and a 'time' attribute set to the number of milliseconds since it sent the response associated with the 'report' attribute.</p>
<example caption="Response with report">
<![CDATA[HTTP/1.1 200 OK
Content-Type: text/xml; charset=utf-8