[lwip-commits] [SCM] lwIP - A Lightweight TCPIP stack branch, master, updated. 2e26fc9224b019f5630258c0198cd0148766cb82

[Simon Goldschmidt]

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- Log -----------------------------------------------------------------
commit 2e26fc9224b019f5630258c0198cd0148766cb82
Author: Michael Brown <address@hidden>
Date:   Mon Jul 4 12:25:22 2016 +0200

    tcp: Avoid 3-second delay for a half-open connection
    
    If lwIP encounters a half-open connection (e.g. due to a restarted
    application reusing the same port numbers) it will correctly send a
    RST but will not resend the SYN until one retransmission timeout later
    (approximately three seconds).  This can increase the time taken by
    lpxelinux.0 to fetch its configuration file from a few milliseconds to
    around 30 seconds.
    
    Fix by immediately retransmitting the SYN whenever a half-open
    connection is detected.
    
    Signed-off-by: Michael Brown <address@hidden>
    Signed-off-by: goldsimon <address@hidden>

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Summary of changes:
 src/core/tcp_in.c |    4 ++++
 1 file changed, 4 insertions(+)


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