AFAIK, it happens when sends zero bytes.
2014-06-10 19:36 GMT+08:00 Maxim Dounin <[email protected]>: > Hello! > > On Tue, Jun 10, 2014 at 12:54:12AM +0800, Jianjun Zheng wrote: > > > When send() returned zero, the errno won't be set. > > So, it's meaningless here. > > This should never ever happen, and if it happens - logging errno > make sense, as nobody knows why it happened in the first place. > > -- > Maxim Dounin > http://nginx.org/ > > _______________________________________________ > nginx-devel mailing list > [email protected] > http://mailman.nginx.org/mailman/listinfo/nginx-devel >
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