php实现socket编程

服务器端：

<?php

error_reporting(E_ALL);

set_time_limit(0);

//ob_implicit_flush();

$address = 'localhost';

$port = 1024;

//创建端口

if( ($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) {

echo "socket_create() failed :reason:" . socket_strerror(socket_last_error()) . "\n";

}

//绑定

if (socket_bind($sock, $address, $port) === false) {

echo "socket_bind() failed :reason:" . socket_strerror(socket_last_error($sock)) . "\n";

}

//监听

if (socket_listen($sock, 5) === false) {

echo "socket_bind() failed :reason:" . socket_strerror(socket_last_error($sock)) . "\n";

}

do {

//得到一个链接

if (($msgsock = socket_accept($sock)) === false) {

echo "socket_accepty() failed :reason:".socket_strerror(socket_last_error($sock)) . "\n";

break;

}

//welcome 发送到客户端

$msg = "<font color='red'>server send:welcome</font><br/>";

socket_write($msgsock, $msg, strlen($msg));

echo 'read client message\n';

$buf = socket_read($msgsock, 8192);

$talkback = "received message:$buf\n";

echo $talkback;

if (false === socket_write($msgsock, $talkback, strlen($talkback))) {

echo "socket_write() failed reason:" . socket_strerror(socket_last_error($sock)) ."\n";

} else {

echo 'send success';

}

socket_close($msgsock);

} while(true);

//关闭socket

socket_close($sock);

?>

客户端程序：

<?php

//error_reporting(E_ALL);

echo "<h2>tcp/ip connection </h2>\n";

$service_port = 1024;

$address = 'localhost';

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);

if ($socket === false) {

echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";

} else {

echo "OK. \n";

}

echo "Attempting to connect to '$address' on port '$service_port'...";

$result = socket_connect($socket, $address, $service_port);

if($result === false) {

echo "socket_connect() failed.\nReason: ($result) " . socket_strerror(socket_last_error($socket)) . "\n";

} else {

echo "OK \n";

}

$in = "HEAD / http/1.1\r\n";

$in .= "HOST: localhost \r\n";

$in .= "Connection: close\r\n\r\n";

$out = "";

echo "sending http head request ...";

socket_write($socket, $in, strlen($in));

echo "OK\n";

echo "Reading response:\n\n";

while ($out = socket_read($socket, 8192)) {

echo $out;

}

echo "closeing socket..";

socket_close($socket);

echo "ok .\n\n";