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Code Issues Releases Wiki Activity

XEP-0389: error if client selects an invalid flow

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Sam Whited 2020-11-14 08:31:45 -05:00
parent a556d9f5ea
commit 9475423c59
1 changed files with 29 additions and 2 deletions
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31
xep-0389.xml
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@ -371,7 +371,7 @@
<register xmlns='urn:xmpp:register:0'/>
</iq>]]></example>
</section2>
<section2 topic='Issuing Challenges' anchor='challenge'>
<section2 topic='Selecting a Flow' anchor='selecting'>
<p>
A client selects the registration or recovery feature for negotiation by
replying with an element of the same name and namespace.
@ -384,6 +384,19 @@
<register xmlns='urn:xmpp:register:0'>
<flow id='1'/>
</register>]]></example>
<p>
If during stream initialization the client attempts to select a flow that
does not match one of the flows sent by the server, the server MUST
respond with an "undefined-condition" stream error containing an
"invalid-flow" application error qualified by the 'urn:xmpp:register:0'
namespace.
</p>
<example caption='Server responds to an invalid selection during stream negotiation'><![CDATA[
<stream:error>
<undefined-condition xmlns='urn:ietf:params:xml:ns:xmpp-streams'/>
<invalid-flow xmlns='urn:xmpp:register:0'/>
</stream:error>
</stream:stream>]]></example>
<p>
If the client is initiating registration or recovery after a stream has
already been initiated it uses the same registration element wrapped in an
@ -396,7 +409,21 @@
</recovery>
</iq>]]></example>
<p>
The server then replies to the IQ or feature selection with a challenge.
If the client attempts to select a flow that does not match one of the
flows sent by the server in response to an IQ after stream initialization
the server MUST respond with a stanza error of type "item-not-found".
</p>
<example caption='Server responds to an invalid selection after stream negotiation'><![CDATA[
<iq type='error'>
<error type='cancel'>
<item-not-found xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/>
</error>
</iq>]]></example>
</section2>
<section2 topic='Issuing Challenges' anchor='challenge'>
<p>
If a valid flow is selected by the client the server then replies to the
IQ or feature selection with a challenge.
If replying to an IQ, the challenge must be wrapped in an IQ of type
"result".
Challenges take the form of a &lt;challenge/&gt; element qualified by the