fix infinite loop on connection failures #303
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ngx_http_upsync_connect_handler(): When ngx_event_connect_peer() fails, we shouldn't set the current timer timeout to 0 as that immediatelly calls the current function again. Instead, we should call ngx_http_upsync_clean_event() to properly clean up & to set the reconnection timer.
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ngx_http_upsync_connect_handler():
When ngx_event_connect_peer() fails, we shouldn't set the current
timer to 0 as that immediatelly calls the current function
again. Instead, we should call ngx_http_upsync_clean_event() to
properly clean up & to set the reconnection timer.
It is easy to reproduce the bug on linux: on the nginx side try to block etcd IP address with a command below:
ip ro add unreach 1.1.1.1(to remove the rule, run
ip ro del unreach 1.1.1.1)