Messages in this thread | | | Subject | Re: [PATCH 1/1] tcp: Wrong timeout for SYN segments | From | Eric Dumazet <> | Date | Sat, 25 Aug 2012 11:01:39 +0200 |
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> From: Alexander Bergmann <alex@linlab.net> > Date: Fri, 24 Aug 2012 14:09:49 +0200 > Subject: [PATCH 1/1] tcp: Increase timeout for SYN segments > > Commit 9ad7c049 changed the initRTO from 3secs to 1sec in accordance to > RFC6298 (former RFC2988bis). This reduced the time till the last SYN > retransmission packet gets sent from 93secs to 31secs. > > RFC1122 is stating that the retransmission should be done for at least 3 > minutes, but this seems to be quite high. > > "However, the values of R1 and R2 may be different for SYN > and data segments. In particular, R2 for a SYN segment MUST > be set large enough to provide retransmission of the segment > for at least 3 minutes. The application can close the > connection (i.e., give up on the open attempt) sooner, of > course." > > This patch increases the value of TCP_SYN_RETRIES to the value of 6, > providing a retransmission window of 63secs. > > The comments for SYN and SYNACK retries have also been updated to > describe the current settings. > > Signed-off-by: Alexander Bergmann <alex@linlab.net> > ---
Acked-by: Eric Dumazet <edumazet@google.com>
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