PHP stream_socket_client not using proxy - php

Question

I'm trying to get stream_socket_client working with proxy server.
Peace of code:
<?php
$context = stream_context_create(['http' => ['proxy' => '147.135.210.114:54566', 'request_fulluri' => true]]);
//$file = file_get_contents("http://www.google.com", false, $context);
$fp = stream_socket_client("tcp://www.google.com:80", $errno, $errstr, 30, STREAM_CLIENT_CONNECT, $context);
if (!$fp) {
echo "$errstr ($errno)<br />\n";
} else {
fputs($fp, "GET / HTTP/1.0\r\nHost: www.google.com\r\nAccept: */*\r\n\r\n");
while (!feof($fp)) {
echo fgets($fp, 1024);
}
fclose($fp);
}
?>
While file_get_contents uses proxy (tcpdump -i any -A host 114.ip-147-135-210.eu) stream_socket_client simply omits it and goes directly to google.com. What am I doing wrong? My final goal is to connect to RabbitMQ (AMQP protocol) via proxy, but I can't even get simple HTTP connection working.

Answer 1

if anyone came here struggling, I ended up solving this by connecting to the proxy first then issuing http headers to get the content I wanted.
First create the socket to the proxy:
$sock = stream_socket_client(
"tcp://$proxy:$port",
$errno,
$errstr,30,
STREAM_CLIENT_CONNECT,
stream_context_create()
);
Second connect to the destination host you want:
$write = "CONNECT www.example.org HTTP/1.1\r\n";
$write .= "Proxy-Authorization: Basic ".base64_encode("$proxy_user:$proxy_pass)."\r\n";
$write .= "\r\n";
fwrite($sock, $write);
This should return a 200 code:
preg_match('/^HTTP\/\d\.\d 200/', fread($sock, 1024));
Now you can just issue GET (make sure you send all the HTTP header):
fwrite($sock, "GET / HTTP/1.1\r\n")
This has more details: https://stackoverflow.com/a/55010581/687976