Coda File System

Re: CODA clients implement incoming TCP connections from CODA server??

From: Magnus Ahltorp <>
Date: 25 Jan 1999 01:14:58 +0100
> I have this question for CODA ...

I really only know (disconnected) AFS, but I hope I'm correct in this.

> 1. Is there a callback mechanism from CODA server to client?

Yes, when files are updated, the client gets a message from the

> 2. If so, does it happen when clients are not connected to servers?
> In that case, do CODA servers initiate TCP connections to CODA
> clients?

The communication is UDP based. This means that there are no TCP
connections between the client and the server. "Disconnected" is a
state when the network between the client and the server is not able
to forward packets (as in a offline laptop).

For obvious reasons, the server cannot contact the client when it is
offline. Coda solves this through reintegration when the client is
back on the network.

Received on 1999-01-24 19:15:44