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From: brian@awfulhak.demon.co.uk (Brian Somers)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: FreeBSD 2.1.0 broadcast problem/bug : does it ring a bell ?
Date: 19 Jun 1996 05:28:32 +0100
Organization: Coverform Ltd.
Lines: 24
Message-ID: <4q7vlg$9o@anorak.coverform.lan>
References: <4pk4vh$1db@cyan.wanadoo.fr>
X-NNTP-Posting-Host: awfulhak.demon.co.uk
X-Newsreader: TIN [version 1.2 PL2]
Pierre-Yves Kerembellec (pyk@sv.vtcom.fr) wrote:
[....]
: memset(&tSocket,0,sizeof(tSocket));
: tSocket.sin_port = htons(9090);
: tSocket.sin_family = AF_INET;
: tSocket.sin_addr.s_addr = INADDR_BROADCAST;
: strcpy(sBuffer,"Hello world");
: if (sendto(fSocket,sBuffer,strlen(sBuffer),0,(struct sockaddr *)&tSocket,sizeof(tSocket)))<0)
: {perror("sendto"); exit(3);}
[....]
Don't you need:
tSocket.sin_port = 9090;
tSocket.sin_len = sizeof( tSocket );
You don't need sin_port in network byte order as it's an internal
structure. The underlying code in sendto will get this field and
fill the packet with the htons() version. I suspect the sin_len
bit (or lack of it) may be causing problems.
--
Brian <brian@awfulhak.demon.co.uk>
Don't _EVER_ lose your sense of humour....