Re: SIGTRAN: Client-Server model

Aditi,

The function of "client" and "server" that is used by SIGTRAN
is the initiator of connections between them. The "client"
decides to connect to a "server" that is listening for such
connection requests.

In almost all real cases of SIGTRAN, the underlying transport
is provided by SCTP, where a connection is called an association
and must be initiated by just one side, with suitable responses
by the other side.

In their original guise and purpose, many SIGTRAN protocols are
inherently asymmetric, connecting user-level protocols on one 
side to provider-level protocols on the other side of a pair
of co-operating peers. So two "peers" are often not "equal 
peers" in the sense of being equivalent in operation.

Generally, the "client" and "server" label distinction only 
applies to the connection phase, and is not relevant after
connecting.  Your question refers to *all* functions of "client"
and "server". I believe the initiator and listener/responder 
roles at connection time are the only such function recognized 
in the SIGTRAN suite of protocols.

With thanks, from Chris Benson.

On Thu, 5 Apr 2012, aditi someshwar wrote:

>>  Date: Thu, 5 Apr 2012 11:59:56 +0530
>>  From: aditi someshwar <[email protected]>
>>  To: Elnur Atakishiyev <[email protected]>
>>  Cc: "[email protected]" <[email protected]>
>>  Subject: Re: [Sigtran] SIGTRAN: Client-Server model
>>  
>>  True, but does it mean that all functions of the "client" and "server" are
>>  applicable to SIGTRAN?
>>  Why can't they be peer to peer nodes?
>>  
>>  On Thu, Apr 5, 2012 at 11:55 AM, Elnur Atakishiyev
>>  <[email protected]>wrote:
>>  
>>  >  Hi Aditi,****
>>  >
>>  > This is because of Sigtran is based on IP protocol and for two nodes
>>  > interconnection between each other one of them must be act as “SERVER” and
>>  > other one is must be acted as “CLIENT”.****
>>  >
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>>  > ** **
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>>  >
>>  > *From:* [email protected] [mailto:[email protected]] *On
>>  > Behalf Of *aditi someshwar
>>  > *Sent:* Thursday, April 05, 2012 10:46 AM
>>  > *To:* [email protected]
>>  > *Subject:* [Sigtran] SIGTRAN: Client-Server model****
>>  >
>>  > ** **
>>  >
>>  > Hi all,
>>  >
>>  > One very fundamental question:
>>  >
>>  > SIGTRAN uses "Client-Server" model.
>>  >
>>  > Can anyone please tell why?
>>  >
>>  > Regards,
>>  > Aditi****
>>  >
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