I have a working websocket Server (python + Tornado) which accepts Connections on port 8973. I can connect by a easy JavaScript / jquery instruction like:
ws = new WebSocket("ws://192.168.41.170:8973/rt");
But I need my php script to connect to this websocket server and send a message. I tried all most available solutions like
https://github.com/lemmingzshadow/php-websocket/
$host = '192.168.41.170'; //where is the websocket server
$port = 8973;
$local = "http://192.168.41.2/"; //url where this script run
$data = 'hello world!'; //data to be send
$head = "GET / HTTP/1.1"."\r\n".
"Upgrade: WebSocket"."\r\n".
"Connection: Upgrade"."\r\n".
"Origin: $local"."\r\n".
"Host: $host"."\r\n".
"Content-Length: ".strlen($data)."\r\n"."\r\n";
//WebSocket handshake
$sock = fsockopen($host, $port, $errno, $errstr, 2);
fwrite($sock, $head ) or die('error:'.$errno.':'.$errstr);
$headers = fread($sock, 2000);
fwrite($sock, "\x00$data\xff" ) or die('error:'.$errno.':'.$errstr);
$wsdata = fread($sock, 2000); //receives the data included in the websocket package "\x00DATA\xff"
fclose($sock);
But this all dont work. Has anybody a working code snippet? I dont need a php-websocket server! Thanks
I think your problem is in how you are packing the data. Without knowing which protocol you are trying to use, I can't tell you how to pack it! But, there is a working code snippet in one answer to this question.
Related
I am running a Ratchet WebSocketServer in my backend this is all working fine.
<?php
require '../vendor/autoload.php';
use Ratchet\WebSocket\WsServer;
use Ratchet\Http\HttpServer;
$wsServer = new WsServer(new Chat());
$wsServer->disableVersion(0);
$server = \Ratchet\Server\IoServer::factory(
new HttpServer(
$wsServer
),
8080
);
$server->run();
But I want to connect to the websocket using a plain php script to send a message to the server.
$host = 'ws://localhost'; //where is the websocket server
$port = 8080;
$local = "http://example.com"; //url where this script run
$data = "first message"; //data to be send
$head = "GET / HTTP/1.1"."\r\n".
"Upgrade: WebSocket"."\r\n".
"Connection: Upgrade"."\r\n".
"Origin: $local"."\r\n".
"Host: $host:$port"."\r\n".
"Sec-WebSocket-Key: asdasdaas76da7sd6asd6as7d"."\r\n".
"Content-Length: ".strlen($data)."\r\n"."\r\n";
//WebSocket handshake
$sock = fsockopen($host, $port);
fwrite($sock, $head ) or die('error:'.$errno.':'.$errstr);
$headers = fread($sock, 2000);
echo $headers;
fwrite($sock, $data) or die('error:'.$errno.':'.$errstr);
$wsdata = fread($sock, 2000);
fclose($sock);
But the error I receive is.
error:32744:Unable to find the socket transport "ws" - did you forget to enable it when you configured PHP?
Then when I change the host and don't use the ws:// and it says.
error:111:Connection refused
Does anyone have an idea how to send data to a running Ratchet WebSocket Server from a plain php file?
I have tried this project alongside Ratchet, and it works perfectly as a PHP client:
https://github.com/Textalk/websocket-php
Install with:
composer require textalk/websocket 1.0.*
And a usage example:
<?php
require('vendor/autoload.php');
use WebSocket\Client;
$client = new Client("ws://127.0.0.1:1234");
$client->send("Hello from PHP");
echo $client->receive() . "\n"; // Should output 'Hello from PHP'
I tested, and this also works with SSL if you're using wss:// (for remote websockets).
I am trying to send data to PHP websocket server, although it sends the data but the data received is a garbage values. How can fix this to get correct values posted to websocket php server?
Below is my websocket php client script
<?php
$host = 'example.com:9000/server.php'; //where is the websocket server
$port = 9000; //ssl
$local = "http://localhost/"; //url where this script run
$data = json_encode(array("server_msg"=> "1","device_id"=> "DDD-123455678")); //data to be send
$head = "GET / HTTP/1.1"."\r\n".
"Host: $host"."\r\n".
"Upgrade: websocket"."\r\n".
"Connection: Upgrade"."\r\n".
"Sec-WebSocket-Key: asdasdaas76da7sd6asd6as7d"."\r\n".
"Sec-WebSocket-Version: 13"."\r\n".
"Content-Length: ".strlen($data)."\r\n"."\r\n";
////WebSocket handshake
$sock = fsockopen($host, $port, $errno, $errstr, 2);
fwrite($sock, $head ) or die('error:'.$errno.':'.$errstr);
$headers = fread($sock, 2000);
fwrite($sock, "\x00$data\xff" ) or die('error:'.$errno.':'.$errstr);
$wsdata = fread($sock, 2000); //receives the data included in the websocket package "\x00DATA\xff"
$retdata = trim($wsdata,"\x00\xff"); //extracts data
////WebSocket handshake
fclose($sock);
echo $retdata;
?>
Thanks
Hi,
I have already tried it and it gives me error as below:
Fatal error: Uncaught exception 'WebSocket\ConnectionException' with message 'Connection to 'ws://************/server.php' in /var/www/webclientphp/vendor/textalk/websocket/lib/Client.php on line 149
WebSocket\ConnectionException: Connection to 'ws://************/server.php' failed: Server sent invalid upgrade response: HTTP/1.1 101 Web Socket Protocol Handshake Upgrade: websocket Connection: Upgrade WebSocket-Origin: ************ WebSocket-Location: ws://************:9000/demo/shout.php Sec-WebSocket-Accept:Kfh9QIsMVZcl6xEPYxPHzW8SZ8w= in /var/www/webclientphp/vendor/textalk/websocket/lib/Client.php on line 149
Please help
Your data needs to be encoded to match the Websocket protocol (frames, headers, encryption etc).
The server will be expecting websocket frames, and will try to decode them as per the protocol, so you can't just send raw data. It will also send data to you in this format.
The easiest way is to use a library, like this one
<?php
$host = 'localhost'; //where is the websocket server
$port = 8080; //ssl
$local = "http://localhost/php-websockets-master/"; //url where this script run
$data = '{"id": 2,"command": "server_info"}'; //data to be send
$head = "GET / HTTP/1.1"."\r\n".
"Upgrade: WebSocket"."\r\n".
"Connection: Upgrade"."\r\n".
"Origin: $local"."\r\n".
"Host: $host"."\r\n".
"Content-Length: ".strlen($data)."\r\n"."\r\n";
////WebSocket handshake
$sock = fsockopen($host, $port, $errno, $errstr, 2);
fwrite($sock, $head ) or die('error:'.$errno.':'.$errstr);
$headers = fread($sock, 2000);
sleep(1);
fwrite($sock, "\x00$data\xff" ) or die('error:'.$errno.':'.$errstr);
$wsdata = fread($sock, 2000); //receives the data included in the websocket package "\x00DATA\xff"
$retdata = trim($wsdata,"\x00\xff"); //extracts data
////WebSocket handshake
fclose($sock);
echo $headers;
echo $retdata;
?>
is the code I am using and the server side just echoes the string sent to it.
I have tested server side code written in php and it works fine with javascript client side code. When the above mentioned code is ran, it prints only header and that is "HTTP/1.1 426 Upgrade Required Sec-WebSocketVersion: 13". Any help explaining it would be great. Please don't suggest using Ratchet or React php. If You can suggest some library that does not need to be installed then that too would be of great help.
I am trying to figure out if there is a way to do a curl post, but without receiving the response.
I know I can prevent the response from being displayed by setting CURLOPT_RETURNTRANSFER to false, but I don't even want to receive it.
I am working on a proxy and need to do the post request to a webservice, but the response it gives is MASSIVE and ends up timing out my connection (even when set to 200 seconds).
Even if it did work, that's just way too long since I don't care what the response is at all.
I can't seem to find a way to do this.
Try using a socket rather than using cURL:
$requestBody = 'myparams=something&something=somethingelse';
$socket = fsockopen("mysite.com", 80, $errno, $errstr, 15);
if (!$socket) {
// Handle the error, can't connect
} else {
$http = "POST /path/to/post/to HTTP/1.1\r\n";
$http .= "Host: mysite.com\r\n";
$http .= "Content-Type: application/x-www-form-urlencoded\r\n";
$http .= "Content-length: " . strlen($post_data) . "\r\n";
$http .= "Connection: close\r\n\r\n";
$http .= $requestBody . "\r\n\r\n";
fwrite($socket, $http);
fclose($socket);
}
This will submit the POST request and not wait around for the response.
I would like to create a batch script, to go through 20,000 links in a DB, and weed out all the 404s and such. How would I get the HTTP status code for a remote url?
Preferably not using curl, since I dont have it installed.
CURL would be perfect but since you don't have it, you'll have to get down and dirty with sockets. The technique is:
Open a socket to the server.
Send an HTTP HEAD request.
Parse the response.
Here is a quick example:
<?php
$url = parse_url('http://www.example.com/index.html');
$host = $url['host'];
$port = $url['port'];
$path = $url['path'];
$query = $url['query'];
if(!$port)
$port = 80;
$request = "HEAD $path?$query HTTP/1.1\r\n"
."Host: $host\r\n"
."Connection: close\r\n"
."\r\n";
$address = gethostbyname($host);
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_connect($socket, $address, $port);
socket_write($socket, $request, strlen($request));
$response = split(' ', socket_read($socket, 1024));
print "<p>Response: ". $response[1] ."</p>\r\n";
socket_close($socket);
?>
UPDATE: I've added a few lines to parse the URL
If im not mistaken none of the php built-in functions return the http status of a remote url, so the best option would be to use sockets to open a connection to the server, send a request and parse the response status:
pseudo code:
parse url => $host, $port, $path
$http_request = "GET $path HTTP/1.0\nHhost: $host\n\n";
$fp = fsockopen($host, $port, $errno, $errstr, $timeout), check for any errors
fwrite($fp, $request)
while (!feof($fp)) {
$headers .= fgets($fp, 4096);
$status = <parse $headers >
if (<status read>)
break;
}
fclose($fp)
Another option is to use an already build http client class in php that can return the headers without fetching the full page content, there should be a few open source classes available on the net...
This page looks like it has a pretty good setup to download a page using either curl or fsockopen, and can get the HTTP headers using either method (which is what you want, really).
After using that method, you'd want to check $output['info']['http_code'] to get the data you want.
Hope that helps.
You can use PEAR's HTTP::head function.
http://pear.php.net/manual/en/package.http.http.head.php