From: Rick Jones <rick.jones2@hp.com>
To: Huajun Li <huajun.li.lee@gmail.com>
Cc: ZHOU Xiaobo <xb.zhou@qq.com>, netdev <netdev@vger.kernel.org>
Subject: Re: write() udp socket
Date: Mon, 25 Jul 2011 10:38:12 -0700 [thread overview]
Message-ID: <4E2DAA04.2070205@hp.com> (raw)
In-Reply-To: <CA+v9cxZAF27mXc6aCEPyOdqbeLved3_xibvDS4TQugHR=7owPg@mail.gmail.com>
On 07/24/2011 01:33 AM, Huajun Li wrote:
> 2011/7/23 ZHOU Xiaobo<xb.zhou@qq.com>:
>> 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."
next prev parent reply other threads:[~2011-07-25 17:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-23 9:29 write() udp socket ZHOU Xiaobo
2011-07-24 8:33 ` Huajun Li
2011-07-25 17:38 ` Rick Jones [this message]
-- strict thread matches above, loose matches on Subject: below --
2011-07-26 5:32 ZHOU Xiaobo
2011-07-26 5:39 ZHOU Xiaobo
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