From owner-freebsd-hackers  Fri Jan 26  7:28: 7 2001
Delivered-To: freebsd-hackers@freebsd.org
Received: from gradient.cis.upenn.edu (GRADIENT.CIS.UPENN.EDU [158.130.67.48])
	by hub.freebsd.org (Postfix) with ESMTP id A20A137B401
	for <freebsd-hackers@freebsd.org>; Fri, 26 Jan 2001 07:27:48 -0800 (PST)
Received: from localhost (localhost [127.0.0.1])
	by gradient.cis.upenn.edu (8.10.1/8.10.1) with ESMTP id f0QFRkF28061;
	Fri, 26 Jan 2001 10:27:46 -0500 (EST)
Date: Fri, 26 Jan 2001 10:27:46 -0500 (EST)
From: Alwyn Goodloe <agoodloe@gradient.cis.upenn.edu>
To: Patrick Bihan-Faou <patrick@netzuno.com>
Cc: freebsd-hackers@freebsd.org
Subject: Re: Divert Sockets & Fragmentation revisited
In-Reply-To: <HJEEKLMFLKEOKHOKNPBMIEGDCJAA.patrick@netzuno.com>
Message-ID: <Pine.SOL.4.21.0101261025540.27480-100000@gradient.cis.upenn.edu>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-hackers@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

Having run lsof  I can verify that the program IS reading on that port 
number.

  Has anyone else on the hacker list had problems with diverting
fragmented datagrams?? 


Alwyn Goodloe
agoodloe@gradient.cis.upenn.edu
 

On Fri, 26 Jan 2001, Patrick Bihan-Faou wrote:

> Hi,
> 
> Sorry to state something that is obvious, but when you bind your socket to
> the port, you have the port in the correct (network) order ?
> 
> i.e. do you use htons(DIVERTPort) ?
> 
> If you have lsof installed, run it and look at the port number that your
> program listens on.
> 
> 
> 
> Patrick.
> 
> 
> > Here is the important code fragments:
> >
> > Note: I have played with the MAX_PACKET_SIZE in hopes that it would make
> some
> > difference but to no avail.
> >
> > #define MAX_PACKET_SIZE  300000
> > #define DIVERTPort  4422
> > #define ACTIVE_UDP_PORT 3322
> >
> >
> > if ((divert_sock = socket(PF_INET, SOCK_RAW, IPPROTO_DIVERT)) < 0)
> >    sys_error("divert socket error");
> >  set_sock_data(&server_divert,PF_INET,DIVERTPort,INADDR_ANY);
> >  printf("Step 1  \n");    /* Register address and port with the system */
> >  if (bind(divert_sock, (struct sockaddr*)
> &server_divert,sizeof(server_divert)) < 0)
> >     sys_error("server_divert bind error");
> > for ( ; ; ) {
> >
> >     n = recvfrom (divert_sock,encaped_pkt,MAX_PACKET_SIZE,0,
> > 		  ( struct sockaddr * ) &client_add,&clilen);
> >
> >
> >
> >
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe freebsd-hackers" in the body of the message
> >
> 
> 



To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message