How to get http response in php ratchet - php

Question

I am going to build a system which will receive a streaming raw data form browser. Data will use websocket to transmit and receive, then system will keep going to send chunk data to HTTP server. Flowchart show below:
First, I separate websocket server and HTTP client into 2 program, both can work. websocket server use ratchet, HTTP client use stream_socket_client and stream_select.
Then, I try to combine websocket server and HTTP client together, I can receive data from browser but I cannot get any response from HTTP server. How can I get HTTP response in Ratchet? Many Thanks.
The following is my php code:
Chat.php
<?php
namespace MyApp;
use Ratchet\MessageComponentInterface;
use Ratchet\ConnectionInterface;
function read_response_code($response){
foreach (explode("\n", $response) as $a) {
if (strpos($a, 'HTTP/1.1') !== false) {
$arr = explode(" ", $a);
if ($arr[1] != "100")
{
return 0;
}
return 1;
}
}
return 0;
}
class Socket implements MessageComponentInterface {
protected $clients;
public function __construct(){
$this->clients = new \SplObjectStorage;
$this->SERVER = "tcp://192.168.0.1:80";
$this->socket = [];
$this->clients->connect = 0;
}
public function onOpen(ConnectionInterface $conn) {
// Store the new connection to send messages to later
$this->clients->attach($conn);
echo "New connection! ({$conn->resourceId})\n";
echo "Try to connect http server...\n";
$this->socket = stream_socket_client($this->SERVER, $errno, $errstr, 30);
if (!$this->socket){
//disconnect websocket
$conn->close();
}
else{
$header = "POST / HTTP/1.1\r\n"
. "Host: 192.168.0.1\r\n"
. "Accept: */*\r\n"
. "Content-Type: application/octet-stream\r\n"
. "Transfer-Encoding: chunked\r\n"
. "Expect: 100-continue\r\n\r\n";
$written = fwrite($this->socket, $header);
$response = fread($this->socket, 100);
$ret = read_response_code($response);
if ($ret == 0)
{
echo "Connect HTTP server fail.\n";
$conn->close();
}
else
{
echo "Connect success!!!!\n";
$this->clients->connect = 1;
}
}
}
public function onMessage(ConnectionInterface $from, $msg) {
//combine http client
if ($this->clients->connect == 1)
{
$read = array($this->socket);
$write = NULL;
$except = NULL;
$num = stream_select($read, $write, $except, 0, 400000);
if ($num === false) {
/* Error handling */
}
elseif ($num > 0) {
// cannot read any response
echo "xxxxxxxxxxxxxx";
}
else {
// send data to HTTP server
$size = strlen($msg);
$hex = dechex($size);
fwrite($this->socket, "$hex\r\n");
$written = fwrite($this->socket, $msg);
fwrite($this->socket, "\r\n");
}
}
}
public function onClose(ConnectionInterface $conn) {
// The connection is closed, remove from connection list
$this->clients->detach($conn);
echo "Connection {$conn->resourceId} has disconnected\n";
}
public function onError(ConnectionInterface $conn, \Exception $e) {
echo "An error has occurred: {$e->getMessage()}\n";
$conn->close();
}
}
Chat-server.php
<?php
use Ratchet\Server\IoServer;
use Ratchet\Http\HttpServer;
use Ratchet\WebSocket\WsServer;
use MyApp\Chat;
require dirname(__DIR__) . '/vendor/autoload.php';
$loop = \React\EventLoop\Factory::create();
$server = IoServer::factory(
new HttpServer(
new WsServer(
new Socket()
)
),
8080
);
$server->run();
HTTP_client.php
<?php
$SERVER = "tcp://192.168.0.1:80";
$SEND_STATUS = 0;
$file = fopen("test.raw", "rb");
$socket = stream_socket_client($SERVER, $errno, $errstr, 30);
$header = "POST / HTTP/1.1\r\n"
. "Host: 192.168.0.1\r\n"
. "Accept: */*\r\n"
. "Content-Type: application/octet-stream\r\n"
. "Transfer-Encoding: chunked\r\n"
. "Expect: 100-continue\r\n\r\n";
$written = fwrite($socket, $header);
$response = fread($socket, 100);
function send_data($file, $socket, $bytes) {
global $SEND_STATUS;
if ( feof($file) ) {
$SEND_STATUS = 1;
fwrite($socket, "0\r\n\r\n");
fclose($file);
return(false);
}
$buffer = fread($file, $bytes);
$size = strlen($buffer);
$hex = dechex($size);
fwrite($socket, "$hex\r\n");
$written = fwrite($socket, $buffer);
fwrite($socket, "\r\n");
}
while (true) {
$read = array($socket);
$write = NULL;
$except = NULL;
$num = stream_select($read, $write, $except, 0, 400000);
if ($num === false) {
/* Error handling */
}
elseif ($num > 0) {
foreach ($read as $r) {
echo "xxxxxxxxx";
}
}
else {
if ( $SEND_STATUS === 0 ) {
send_data($file, $socket, 16000);
}
}
}
?>