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[lwip-devel] [bug #56161] TCP state stays FIN_WAIT_1/CLOSING

From: Gao Qingshui
Subject: [lwip-devel] [bug #56161] TCP state stays FIN_WAIT_1/CLOSING
Date: Mon, 6 May 2019 22:14:45 -0400 (EDT)
User-agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36

Follow-up Comment #3, bug #56161 (project lwip):

Hi, I think the timeout value for FIN_WAIT_1 should be shorter than the normal
timeout value for established state. In Linux, if the initial RTO was 200ms,
then only 8 times was tried for FIN_WAIT_1 state before the tcp connection was
destroyed, but it was 15 times for ESTABLISHED state. pls refer the sysctl
parameter "tcp_retries2" and "tcp_orphan_retries" for more info.  


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