Help sendmsg() failed in error log

hello

 when test my reverse proxy server, I found "sendmsg() failed (9:

Bad file descriptor) while reading response header from upstream" in
error.log.

 Is there any clue about it?

Confidentiality Notice: The information contained in this e-mail and any
accompanying attachment(s)
is intended only for the use of the intended recipient and may be
confidential and/or privileged of
Neusoft Corporation, its subsidiaries and/or its affiliates. If any
reader of this communication is
not the intended recipient, unauthorized use, forwarding, printing,
storing, disclosure or copying
is strictly prohibited, and may be unlawful.If you have received this
communication in error,please
immediately notify the sender by return e-mail, and delete the original
message and all copies from
your system. Thank you.

On Thursday 24 April 2014 11:04:05 yanghq wrote:

hello

 when test my reverse proxy server, I found "sendmsg() failed (9:

Bad file descriptor) while reading response header from upstream" in
error.log.

 Is there any clue about it?

Since nginx doesn’t use sendmsg() for upstream servers, it’s very likely
that the clue is somewhere around 3rd-party modules.

wbr, Valentin V. Bartenev