Re: socket_write eats data - solved

Wouldn't this multiple connections be a problem for php? IMHO one of the main draw backs of the PHP IMAP library is the fact that you have to open and close and imap connection for each page. That issue is multiplied ten fold in this scenario isn't it? Thomas Weber wrote:

No, it's TCP and a very uncomplicated protocol, everything is sent in clear text. Major problem is the socket-multicasting to keep track of all clients simultanly. ----- Original Message ----- From: "Raditha Dissanayake" <jabber@raditha.com> To: "Thomas Weber" <thomas@youngarts.org>; "PHP-List" <php-general@lists.php.net> Sent: Sunday, September 14, 2003 2:59 AM Subject: Re: [PHP] socket_write eats data - solved

Is IRC UDP? Thomas Weber wrote:

Hi, i've checked a hundred things before posting this question, but i forgot

the

most important thing, the buffer. The 'eaten' writes were buffered by the network-kernel and sent as bunch

of

data. If too much data for the buffer is sent, the write is broken up and completed in the next bunch-of-data. My receive-script hasn't diplayed the raw output, but an unserialized

array,

fetched out of the received string. Maybe this will will help someone in future. Thomas 'Neo' Weber --- thomas@youngarts.org neo@gothic-chat.de ----- Original Message ----- From: "Thomas Weber" <thomas@youngarts.org> To: "PHP-List" <php-general@lists.php.net> Sent: Saturday, September 13, 2003 9:15 PM Subject: [PHP] socket_write eats data

Hi, I am deveoping a chatserver in IRC-style in PHP. For communication it

uses

socket-multiplexing aka socket_select. So long so good, works perfectly. The problem is, than when i make several socket_write's to the same

client

without waiting about 0.1sec after each write, the written data gets

lost

somewhere. socket_write does NOT throw any error, the data seams just sended, but the clients never receives it. Small example of the used code: ----- var $clients // array of 'client'-objects, each object has it's own socket-descriptor in the object-variable $socket function write_to_clients ($text) { for ($i = 0; $i < count ($this->clients); $i++) { socket_write ($this->clients[$i]->socket, $text); } // usleep (10000); if this is uncommented, all write are received by

all

clients } for ($i = 0; $i < 10; $i++) { $this->write_to_clients ("test ".$i); } ----- Okay, this doesn't check the client-sockets for readiness to write, but

even

if I check (via socket_select), ALL clients are ready to write and

writes

get lost too. It can't be the network-connection, because the tests run

with

standalone PHP-clients on the same machine. Is there any possibility to make fast writes without waiting after each write? The wait limits the server to max. 10 writes per second, wich

isn't

really enaugh for a good chatserver. Thanks for your help! Thomas 'Neo' Weber --- thomas@youngarts.org neo@gothic-chat.de -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php

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