Resolve 'A thread timer expired 5.xxxxxx seconds ago' issue #2475
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Signed-off-by: Quentin Armitage <[email protected]>
Setting SO_LINGER causes the close() call to block until the first of: 1. the ACK of the FIN is received 2. the SO_LINGER timeout expires Since the SO_LINGER timeout was set to 5 seconds, if the FIN or the subsequent ACK were lost, then keepalived would block for 5 seconds, which must not be allowed to happen. The only TCP sockets that keepalived opens are for TCP_CHECK, HTTP_GET, SSL_GET, SMTP_CHECK and sending notify emails. For all of these, for any data that keepalived sends it receives data in response, and so there is no purpose in using SO_LINGER. Removing setting SO_LINGER will stop the occasional 'A thread timer expired 5.1nnnnn seconds ago', as reported in issue acassen#2271. Signed-off-by: Quentin Armitage <[email protected]>
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