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RE: Nature of Application Protocols!

From: Martin Duerst <duerst@w3.org>
Date: Thu, 29 Aug 2002 17:47:58 +0900
Message-Id: <4.2.0.58.J.20020829174656.040a0ed8@localhost>
To: "Naresh Agarwal" <nagarwal@in.firstrain.com>, <ietf-http-wg@w3.org>

Well, SMTP is definitely push. FTP can be used both ways.
Roughly upload = push, download = pull.     Martin.

At 14:08 02/08/29 +0530, Naresh Agarwal wrote:

>I'm sorry..it was a typo error...
>
>i meant to say that -
>
>HTTP, FTP, SMTP, POP, IMAP etc. are "Syncronous", "Connection Less" and 
>"Pull" in nature.
>
>regards,
>Naresh Agarwal
>
> > -----Original Message-----
> > From: Martin Duerst [mailto:duerst@w3.org]
> > Sent: Thursday, August 29, 2002 1:27 PM
> > To: Naresh Agarwal; ietf-http-wg@w3.org
> > Subject: Re: Nature of Application Protocols!
> >
> >
> >
> > HTTP is synchonous, but very much pull, not push.
> >
> > Regards,    Martin.
> >
> >
> > At 12:39 02/08/29 +0530, Naresh Agarwal wrote:
> >
> > >Hi
> > >
> > >I have some general questions regarding protocols.
> > >
> > >Every application protocol is -
> > >
> > >1)Synchronous or Asynchrnous
> > >2)Connection Less or Connection Oriented
> > >3)Push or Pull
> > >
> > >My understanding is that most of the protocols - HTTP, FTP,
> > SMTP, POP,
> > >IMAP etc. are "Syncronous", "Connection Less" and "Push" in nature.
> > >
> > >I could not find any protocol, which is widely used and is
> > Asynchronus,
> > >Connection Oriented and Pull in nature!
> > >
> > >Am i right or i'm missing something?
> > >
> > >Also does Synchrony and Pull, Asynchrony and Push are
> > synonyms..i.e every
> > >Synchronous protocol is Push and every Asynchronous protocol
> > is Push..?
> > >
> > >Can somebody provide me with the explanation of above (if
> > possible, with
> > >examples)?
> > >
> > >thanks,
> > >regards,
> > >Naresh Agarwal
> >
> >
Received on Thursday, 29 August 2002 04:48:14 GMT

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