note 84465 modified in function.socket-connect by felipe
| From: | felipe@php.net | Date: | Fri, 18 Jul 2008 00:40:55 +0000 |
| Subject: | note 84465 modified in function.socket-connect by felipe | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-141644@lists.php.net to get a copy of this message | ||
Here is an example of a non-blocking connect which should perform quite a bit faster than the one
posted by Seymour below:
<?php
function msConnectSocket($remote, $port, $timeout = 30) {
# this works whether $remote is a hostname or IP
$ip = "";
if( !preg_match('/^\d+\.\d+\.\d+\.\d+$/', $remote) ) {
$ip = gethostbyname($remote);
if ($ip == $remote) {
$this->errstr = "Error Connecting Socket: Unknown host";
return NULL;
}
} else $ip = $remote;
if (!($this->_SOCK = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP))) {
$this->errstr = "Error Creating Socket:
".socket_strerror(socket_last_error());
return NULL;
}
socket_set_nonblock($this->_SOCK);
$error = NULL;
$attempts = 0;
$timeout *= 1000; // adjust because we sleeping in 1 millisecond increments
$connected;
while (!($connected = @socket_connect($this->_SOCK, $remote, $port+0)) &&
$attempts++ < $timeout) {
$error = socket_last_error();
if ($error != SOCKET_EINPROGRESS && $error != SOCKET_EALREADY) {
$this->errstr = "Error Connecting Socket: ".socket_strerror($error);
socket_close($this->_SOCK);
return NULL;
}
usleep(1000);
}
if (!$connected) {
$this->errstr = "Error Connecting Socket: Connect Timed Out After $timeout
seconds. ".socket_strerror(socket_last_error());
socket_close($this->_SOCK);
return NULL;
}
socket_set_block($this->_SOCK);
return 1;
}
?>
--was--
Here is an example of a non-blocking connect which should perform quite a bit faster than the one
posted by Seymour below:
function msConnectSocket($remote, $port, $timeout = 30) {
# this works whether $remote is a hostname or IP
$ip = "";
if( !preg_match('/^\d+\.\d+\.\d+\.\d+$/', $remote) ) {
$ip = gethostbyname($remote);
if ($ip == $remote) {
$this->errstr = "Error Connecting Socket: Unknown host";
return NULL;
}
} else $ip = $remote;
if (!($this->_SOCK = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP))) {
$this->errstr = "Error Creating Socket:
".socket_strerror(socket_last_error());
return NULL;
}
socket_set_nonblock($this->_SOCK);
$error = NULL;
$attempts = 0;
$timeout *= 1000; // adjust because we sleeping in 1 millisecond increments
$connected;
while (!($connected = @socket_connect($this->_SOCK, $remote, $port+0)) &&
$attempts++ < $timeout) {
$error = socket_last_error();
if ($error != SOCKET_EINPROGRESS && $error != SOCKET_EALREADY) {
$this->errstr = "Error Connecting Socket: ".socket_strerror($error);
socket_close($this->_SOCK);
return NULL;
}
usleep(1000);
}
if (!$connected) {
$this->errstr = "Error Connecting Socket: Connect Timed Out After $timeout
seconds. ".socket_strerror(socket_last_error());
socket_close($this->_SOCK);
return NULL;
}
socket_set_block($this->_SOCK);
return 1;
}
http://php.net/manual/en/function.socket-connect.php