Date: Thu, 18 Jul 2002 18:37:08 -0500 (CDT) From: Jonathan Lemon <jlemon@flugsvamp.com> To: benjamin@dzhan.com, net@freebsd.org Subject: Re: tcp SYN retries? Message-ID: <200207182337.g6INb8n97317@prism.flugsvamp.com> In-Reply-To: <local.mail.freebsd-net/20020718150136.M46100-100000@crimea.dzhan.com>
next in thread | previous in thread | raw e-mail | index | archive | help
In article <local.mail.freebsd-net/20020718150136.M46100-100000@crimea.dzhan.com> you write: > >When I attempt to make a sock_stream connection to an IP, and DON'T >receive an ACK or RST response, it seems that the system retries a finite >number of times by sending additional SYN packets. There also looks to be >a 3 or 6 second delay between SYN retries. After four or five, the >connection fails. > >Is there a way I can change the interval time for SYN retries, or decrease >the number of times it retries? I would imagine this would be dependent >on the particular tcp/ip stack implementation of my OS. I'm using FreeBSD >and would imaging some kernel sysctl variable would control this... Any >ideas? Or perhaps it's a socket option? You don't mention what version of FreeBSD you're using. The latest versions have a only a 1 sec interval between retries for the first couple of attempts. An overall timeout would be best implemented at the application layer. -- Jonathan To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200207182337.g6INb8n97317>