[sip-comm-dev] Peer2Peer Presence Mode


#1

What does the Peer2Peer Presence Mode mean? Does it mean, presence
should work without a service, which is supporting it? Or is there still
the need for the server to support ist?

Cheers, thomas


#2

Hi Thomas,

Since I looked into the presence implementation quite a bit lately, I'll
answer your question. For all I know, the P2P presence mode works
without a server which supports it. In this case, only the methods
SUBSCRIBE and NOTIFY are used - the client subscribes with each client
in the contact list (directly) and receives notification when the state
of a remote client is changed. The PUBLISH method is not used at all in
this case AFAIK.

This means that in the end, each client includes a presence server,
handling only subscriptions for its own presence.

I don't know though about the support of clients other than SC for this
mode.

Please correct me if I said anything wrong.

Cheers,
Ralph

···

________________________________

From: Hofer Thomas [mailto:t.hofer@liwest.at]

Sent: Wednesday, October 17, 2007 3:01 PM
To: dev@sip-communicator.dev.java.net
Subject: [sip-comm-dev] Peer2Peer Presence Mode

What does the Peer2Peer Presence Mode mean? Does it mean, presence
should work without a service, which is supporting it? Or is there still
the need for the server to support ist?

Cheers, thomas

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#3

Hey all,

Hi Thomas,

Since I looked into the presence implementation quite a bit lately, I'll
answer your question. For all I know, the P2P presence mode works
without a server which supports it. In this case, only the methods
SUBSCRIBE and NOTIFY are used - the client subscribes with each client
in the contact list (directly) and receives notification when the state
of a remote client is changed. The PUBLISH method is not used at all in
this case AFAIK.

This means that in the end, each client includes a presence server,
handling only subscriptions for its own presence.

I don't know though about the support of clients other than SC for this
mode.

I think KPhone also does this.

Cheers
Emil

···

ralph.weires@hitec.lu wrote:

Please correct me if I said anything wrong.

Cheers,
Ralph

________________________________

From: Hofer Thomas [mailto:t.hofer@liwest.at]
Sent: Wednesday, October 17, 2007 3:01 PM
To: dev@sip-communicator.dev.java.net
Subject: [sip-comm-dev] Peer2Peer Presence Mode

What does the Peer2Peer Presence Mode mean? Does it mean, presence
should work without a service, which is supporting it? Or is there still
the need for the server to support ist?

Cheers, thomas

###########################################
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#4

Emil Ivov a �crit :

Hey all,

Hi Thomas,

Since I looked into the presence implementation quite a bit lately, I'll
answer your question. For all I know, the P2P presence mode works
without a server which supports it. In this case, only the methods
SUBSCRIBE and NOTIFY are used - the client subscribes with each client
in the contact list (directly) and receives notification when the state
of a remote client is changed. The PUBLISH method is not used at all in
this case AFAIK.

This means that in the end, each client includes a presence server,
handling only subscriptions for its own presence.

I don't know though about the support of clients other than SC for this
mode.
    
I think KPhone also does this.

Cheers
Emil

Please correct me if I said anything wrong.

Cheers,
Ralph

________________________________

From: Hofer Thomas [mailto:t.hofer@liwest.at] Sent: Wednesday, October 17, 2007 3:01 PM
To: dev@sip-communicator.dev.java.net
Subject: [sip-comm-dev] Peer2Peer Presence Mode

What does the Peer2Peer Presence Mode mean? Does it mean, presence
should work without a service, which is supporting it? Or is there still
the need for the server to support ist?

Cheers, thomas

###########################################
CONFIDENTIALITY: This e-mail and any attachments are confidential and may also be privileged.
If you are not the designated recipient, please notify the sender immediately by reply e-mail and destroy all copies (digital and paper).
Any unauthorized disclosure, distribution, copying, storage or use of the information contained in this e-mail or any attachments is strictly prohibited and may be unlawful.

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X-Lite is also using a such presence mode and probably many others. I'd liked to add to these explanations that even if no server is needed, it's still required that you server is able to proxy SUBSCRIBE and NOTIFY requests and responses.

Hope that helps,
Ben.

···

ralph.weires@hitec.lu wrote:

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