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bug #50837: add zero-window probe timeout

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This commit adds a timeout to the zero-window probing (persist timer)
mechanism. LwIP has not historically had a timeout for the persist
timer, leading to unbounded blocking if connection drops during the
zero-window condition

This commit also adds two units test, one to check the RTO timeout
and a second to check the zero-window probe timeout
This commit is contained in:
Joel Cunningham
2017-05-03 23:43:49 -05:00
parent d87b11e8f9
commit c03fef9a3c
6 changed files with 214 additions and 13 deletions
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@@ -52,6 +52,9 @@ HISTORY
++ Bugfixes:
2017-05-09: Joel Cunningham
* tcp: add zero-window probe timeout (bug #50837)
2017-04-11: Simon Goldschmidt
* sockets.c: task #14420 (Remove sys_sem_signal from inside SYS_ARCH_PROTECT
crit section) done for LWIP_TCPIP_CORE_LOCKING==1