From: andrey mirtchovski <mirtchov@cpsc.ucalgary.ca>
To: russcox@gmail.com, 9fans@cse.psu.edu
Subject: Re: [9fans] 9p2000 query
Date: Fri, 13 May 2005 14:14:28 -0600 [thread overview]
Message-ID: <77ea6b7c9988149c674429387f842122@plan9.ucalgary.ca> (raw)
In-Reply-To: <ee9e417a050513130458aac148@mail.gmail.com>
> or no, depending on the file server.
> it's not really a well-formed question now that i think about it.
>
> devpipe preserves message boundaries.
> il does too.
> tcp does not.
>
"Plan 9 from Bell Labs" discusses message boundaries briefly in the
context of 9p:
"The 9P protocol must run above a reliable transport protocol with
delimited messages. 9P has no mechanism to recover from transmission
errors and the system assumes that each read from a communication
channel will return a single 9P message; it does not parse the data
stream to discover message boundaries. Pipes and some network
protocols already have these properties but the standard IP protocols
do not. TCP does not delimit messages, while UDP [RFC768] does not
provide reliable in-order delivery."
those may not be the same message boundaries Ishwar was looking for
though.
next prev parent reply other threads:[~2005-05-13 20:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-13 18:21 I RATTAN
2005-05-13 20:02 ` Russ Cox
2005-05-13 20:04 ` Russ Cox
2005-05-13 20:14 ` andrey mirtchovski [this message]
2005-05-13 20:45 ` Brantley Coile
2005-05-13 20:55 ` I RATTAN
2005-05-13 21:09 ` Ronald G. Minnich
2005-05-13 21:48 ` "Nils O. Selåsdal"
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