[Serusers] Instant Messaging User Agent Interoperability problem

[Victor Huertas Garcia]

Hi all,

I am testing the Instant Message Service with the SER v0.8.14 and I see that 
it routes them correctly towards the destination user agent. However, what I 
have seen is a tremendous imcompatibility between user agents of different 
vendors.

Here just a bit of this:

IM between two Windows Messenger 4.7.

What I see it that the very first MESSAGE in the conversation is sent 
towards the SER and it routes it perfectly but the subsequent MESSAGES are 
exchange between both Messengers directly!!! It is weird... but this is how 
it is working.

IM between Window Messenger 4.7 and EyeBeam v1.1

The EyeBeam always send the MESSAGES towards the SIP proxy and messenger 
receive them with no problem. However, when the messenger tries to send a 
MESSAGE in the conversation it even doesn't send the packet (I tried to 
capture it with Ethereal and no packet was sent at all) and subsequently 
tell you that the text message could not be delivered to the destination.

IM between EyeBeam v1.1

No problem at all.

IM involving Windows Messenger 5.1

This version of messenger sends an INVITE to the destination before issuing 
the MESSAGE. With EyeBeam is a total disaster and the comunication is not 
possible.


My conclusion is that the SER has not implication in such incompatibility at 
all and that is a matter of interoperability among vendors and different 
implementations of SIMPLE. Do you agree?

Thanks in advance

Victor