Path: utzoo!utgpu!cunews!bnrgate!brtph3!brchh104!brchs1!bnr.ca!rice.edu!sun-spots-request
From: schorr@ead.dsa.com (Andrew J. Schorr)
Newsgroups: comp.sys.sun
Subject: maximum socket buffer size
Keywords: Miscellaneous
Message-ID: <2306@brchh104.bnr.ca>
Date: 2 Apr 91 15:00:00 GMT
Sender: news@brchh104.bnr.ca
Organization: Sun-Spots
Lines: 10
Approved: Sun-Spots@rice.edu
X-Original-Date: 27 Mar 91 20:47:01 GMT
X-Sun-Spots-Digest: Volume 10, Issue 75, message 27
X-Note: Submissions: sun-spots@rice.edu, Admin: sun-spots-request@rice.edu

Hi.  We have an application where we are increasing the UDP socket receive
buffer size using setsockopt.  Are the maximum values documented or
obtainable by any other method than experimentation?  Assuming one wanted
the maximum possible buffer, how should this be programmed?

Empirically, the maximum appears to be approximately 52000 bytes for SunOS
4.1.1, and 61000 for AIX 3.1.

Thanks in advance,
Andy