Re: write() udp socket

On 07/24/2011 01:33 AM, Huajun Li wrote:

2011/7/23 ZHOU Xiaobo[off-list ref]:

quoted

question No1:
When I call
ssize_t write(int fd, const void *buf, size_t count);


on a nonblocking UDP socket, is the return value  always equal to 'count'?

I don't think so.  The function may be interrupt by signal or return
due to other reason, so the return value only represents the size it
writes successfully to the fd.

I believe it should either appaear to succeed or fail.  write() best not 
be sending partial UDP datagrams.  That would be "bad."