[xmpp] 3921bis: probe + unavailable
Peter Saint-Andre <stpeter@stpeter.im> Thu, 28 January 2010 21:33 UTC
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Subject: [xmpp] 3921bis: probe + unavailable
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Regarding the server response to an inbound presence probe, Section 4.3.2 of 3921bis currently reads as follows: ****** 2. Else, if the contact has no available resources, then the server SHOULD reply to the presence probe by sending to the user the full XML of the last presence stanza of type "unavailable" received by the server from the contact (however, the server MAY opt to not reply at all). ****** There are two issues I'd like to bring up: a. My sense of existing implementations is that people would prefer a definitive answer to the probe (i.e., <presence type='unavailable'/>). Therefore I would like to change "SHOULD reply with unavailable but MAY opt to not reply at all" to "MUST reply with unavailable". b. Someone poked me offlist about a potential security issue here: what if the probing user was blocked from receiving the contact's presence at that time (e.g. via privacy lists)? Therefore I suggest that the spec shall be modified to read as follows: ****** 2. Else, if the contact has no available resources, then the server MUST reply to the presence probe by sending to the user a presence stanza of type "unavailable"; this presence stanza SHOULD be empty but (subject to local security policies) MAY include the full XML of the last unavailable presence stanza that the server received from the contact. CS: <presence from='mercutio@example.com' to='juliet@example.com' type='unavailable'/> ****** Objections? Peter -- Peter Saint-Andre https://stpeter.im/
- [xmpp] 3921bis: probe + unavailable Peter Saint-Andre
- Re: [xmpp] 3921bis: probe + unavailable Dave Cridland
- Re: [xmpp] 3921bis: probe + unavailable Ben Schumacher
- Re: [xmpp] 3921bis: probe + unavailable Dave Cridland
- Re: [xmpp] 3921bis: probe + unavailable Peter Saint-Andre
- Re: [xmpp] 3921bis: probe + unavailable Waqas Hussain
- Re: [xmpp] 3921bis: probe + unavailable Jonathan Schleifer
- Re: [xmpp] 3921bis: probe + unavailable Jonathan Schleifer
- Re: [xmpp] 3921bis: probe + unavailable Peter Saint-Andre
- [xmpp] probe from/to (was: Re: 3921bis: probe + u… Peter Saint-Andre
- Re: [xmpp] probe from/to Philipp Hancke
- Re: [xmpp] probe from/to (was: Re: 3921bis: probe… Waqas Hussain
- Re: [xmpp] probe from/to Peter Saint-Andre
- Re: [xmpp] 3921bis: probe + unavailable Jonathan Schleifer
- Re: [xmpp] 3921bis: probe + unavailable Peter Saint-Andre
- Re: [xmpp] 3921bis: probe + unavailable Jonathan Schleifer
- Re: [xmpp] 3921bis: probe + unavailable Jonas Lindberg
- Re: [xmpp] 3921bis: probe + unavailable Jonathan Schleifer
- Re: [xmpp] 3921bis: probe + unavailable Jonas Lindberg
- Re: [xmpp] 3921bis: probe + unavailable Ben Schumacher
- Re: [xmpp] 3921bis: probe + unavailable Jonas Lindberg
- Re: [xmpp] 3921bis: probe + unavailable Peter Saint-Andre
- Re: [xmpp] 3921bis: probe + unavailable Philipp Hancke
- Re: [xmpp] 3921bis: probe + unavailable Peter Saint-Andre
- Re: [xmpp] 3921bis: probe + unavailable Justin Karneges
- Re: [xmpp] 3921bis: probe + unavailable Jonas Lindberg
- Re: [xmpp] 3921bis: probe + unavailable Peter Saint-Andre
- Re: [xmpp] 3921bis: probe + unavailable Jonathan Schleifer
- Re: [xmpp] 3921bis: probe + unavailable Jonas Lindberg
- Re: [xmpp] 3921bis: probe + unavailable Joe Hildebrand
- Re: [xmpp] 3921bis: probe + unavailable Jonathan Schleifer
- Re: [xmpp] 3921bis: probe + unavailable Peter Saint-Andre