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Date:      Wed, 25 Apr 2001 11:06:23 -0400 (EDT)
From:      Alwyn Goodloe <agoodloe@gradient.cis.upenn.edu>
To:        freebsd-questions@FreeBSD.org, freebsd-hackers@FreeBSD.org
Subject:   TCP SYN retransmission time
Message-ID:  <Pine.SOL.4.21.0104251105290.14342-100000@gradient.cis.upenn.edu>

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I got no response on a  previous posting hope I second post will be
 luckier.
 
 --------------------
 
 I just need to make sure that I understand the code correctly in the TCP
 stack. (We are trying to see how long the system waits before a SYN gets
 retransmitted.)
 
  When a SYN is sent, a keepalive timer is set with using the
 TCPTV_KEEPALIVEINTVL  = 75hz (??ms - escapes me at the moment). So an ack
 must be received in this time frame???
 
   This is not the usual dynamic tetransmission timer which might make
 sense for SYN packts.
 
   It seems like a retransmission timer should be set?? That's why I'm
 posing the question.

Alwyn Goodloe
agoodloe@gradient.cis.upenn.edu



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