1.4.40/41 writev failed: Socket is not connected (fastcgi,scgi,proxy)
pkubaj reported "writev failed: Socket is not connected" issues with owncloud in a VM jail under FreeBSD
(network_writev.c.88) writev failed: Socket is not connected 9 (mod_fastcgi.c.3075) connection was dropped after accept() (perhaps the fastcgi process died), write-offset: 0 socket:...
In 1.4.40, lighttpd was modified to defer reading request body until running the dynamic handler routines. With this change, under certain conditions, lighttpd might attempt to write to a backend socket after EINPROGRESS but before the connection is full established. The fix is for lighttpd to enforce waiting for POLLWR event from backend socket before continuing. The conditions under which lighttpd (erroneously) did not wait for socket connection to be established include if streaming input to backend and new data arrived from client before socket connection to backend established; in cases where backend fail and a new connection attempt was made to a different backend; and in cases where the request body input was completely read from client on first try, and connection state transitioned from CON_STATE_READ_POST to CON_STATE_HANDLE_REQUEST.
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