Re: Non-blocking sockets
| From: | Rasmus Lerdorf | Date: | Sat, 28 Oct 2006 02:41:57 +0000 |
| Subject: | Re: Non-blocking sockets | ||
| References: | 1 2 3 4 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-243783@lists.php.net to get a copy of this message | ||
Jochem Maas wrote:
> Eric wrote:
>> Stut wrote:
>>> Eric wrote:
>>>> When I create a socket/stream that connects to a news sever and try
>>>> to recv data from the socket when there is nothing there (Like if the
>>>> server sends one line and I call recv twice) the socket freezes. I
>>>> assume this is because using socket_create or fsockopen creates a
>>>> blocking TCP/Stream socket by default. When I call
>>>> socket_set_nonblock() and the socket_connect I get "A non-blocking
>>>> operation could not be completed immediately". Could someone show me
>>>> exactly how to create a non-blocking TCP/Stream socket? Thanks in
>>>> advance.
>>> I may be wrong but I think you need to set the socket non-blocking
>>> after the connect. You cannot do a non-blocking connect.
>>>
>>> -Stut
>> Then the socket recv doesnt work. Gives me "Unable read from socket".
>>
>> $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
>> socket_connect($socket,"news.csh.rit.edu",119);
>> socket_set_nonblock($socket);
>> socket_recv($socket,$buf,1024,0);
>> echo $buf;
>
> I *think* you need to be looking here:
>
> http://php.net/manual/en/function.socket-select.php
I would actually suggest going a bit higher level and using
stream_socket_client() instead. Using a stream is much more flexible.
See the manual page for the function for some examples.
-Rasmus