Socket & Http in Loop break - php

Question

I'm trying to test the "best" solution to communicate to PHP with NodeJS, but I can't do the test because I make something wrong with the loops.
Here is my NodeJS Code:
var ENCODING = 'utf8';
// SOCKETS
var net = require('net'); // Load the TCP Library
// HTTP REQUEST
var http = require('http'); // Load the HTTP Library | WEBSOCKETS NEED THIS!!
var querystring = require('querystring'); // Load Query Library
// SOCKET SERVER
net.createServer(function (socket) {
socket.setEncoding(ENCODING);
socket.on('data', function (data) {
socket.end('TEXT FROM SOCKET', ENCODING);
});
socket.on('close', function () {
});
}).listen(5000);
// HTTP SERVER
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end("TEXT FROM HTTP");
}).listen(2525);
And here my PHP test:
set_time_limit(0);
$address = '127.0.0.1';
$response = null;
// METHOD: HTTP (2525)
$start = microtime();
for ($x=0; $x<1000; $x++) {
$response = getHttp($address);
}
echo "<br>METHOD 1: " . (microtime() - $start);
// METHOD: Open + Loop Send + Close (5000)
$start = microtime();
$sc = SockOpen($address);
for ($x=0; $x<1000; $x++) {
$response = SockWrite($sc, $address);
}
SockClose($sc);
echo "<br>METHOD 2: " . (microtime() - $start);
// MMETHOD: Loop (Open + Send + Close) (5000)
$start = microtime();
for ($x=0; $x<1000; $x++) {
$sc = SockOpen($address);
$response = SockWrite($sc, $address);
SockClose($sc);
}
echo "<br>METHOD 3: " . (microtime() - $start);
function SockOpen($address) {
ob_implicit_flush();
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket === false) {
echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";
return false;
}
$result = socket_connect($socket, $address, 5000);
if ($result === false) {
echo "socket_connect() failed.\nReason: ($result) " . socket_strerror(socket_last_error($socket)) . "\n";
return false;
}
return $socket;
}
function SockWrite($socket, $address) {
$in = "HEAD / HTTP/1.1\r\n";
$in .= "Host: ".$address."\r\n";
$in .= "Connection: Close\r\n\r\n";
//$in = "key1:value1\n";
socket_write($socket, $in, strlen($in));
$buffer=null;
while ($out = socket_read($socket, 2048)) {
$buffer .= $buffer;
}
return $buffer;
}
function SockClose($socket) {
socket_close($socket); die();
}
function getHttp($address) {
$url = 'http://'.$address.':2525/';
$data = array('key1' => 'value1');
// use key 'http' even if you send the request to https://...
$options = array(
'http' => array(
'header' => "Content-type: text/plain\r\n",
'method' => 'POST',
'content' => http_build_query($data),
),
);
$context = stream_context_create($options);
$result = file_get_contents($url, false, $context);
return $result;
}
One simple connection Work OK, but if i make a loop, the socket "break" the connection and loop fails. The fail occurs in the HTTP and Socket method.
Any idea how to solve this?
thanks

Answer 1

I update the code, searching for the errors, i found problems in server & client codes, here are the updateds:
Client:
set_time_limit(0);
$address = '127.0.0.1';
$response = null;
// METHOD: HTTP (2525)
$start = microtime();
$fails = 0;
for ($x=0; $x<1000; $x++) {
$response = getHttp($address);
if (empty($response)) {
$fails++;
}
}
echo "<br>METHOD 1: " . (microtime() - $start) . " errors: " . $fails;
// METHOD: Open + Loop Send + Close (5000)
$start = microtime();
$fails = 0;
$sc = SockOpen($address);
for ($x=0; $x<1000; $x++) {
$response = SockWrite($sc, $address);
if (empty($response)) {
$fails++;
}
}
SockClose($sc);
echo "<br>METHOD 2: " . (microtime() - $start) . " errors: " . $fails;
// MMETHOD: Loop (Open + Send + Close) (5000)
$start = microtime();
$fails = 0;
for ($x=0; $x<1000; $x++) {
$sc = SockOpen($address);
$response = SockWrite($sc, $address);
if (empty($response)) {
$fails++;
}
SockClose($sc);
}
echo "<br>METHOD 3: " . (microtime() - $start) . " errors: " . $fails;
function SockOpen($address) {
//ob_implicit_flush();
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket === false) {
echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";
return false;
}
$result = socket_connect($socket, $address, 5000);
if ($result === false) {
echo "socket_connect() failed.\nReason: ($result) " . socket_strerror(socket_last_error($socket)) . "\n";
return false;
}
return $socket;
}
function SockWrite($socket, $address) {
//$in = "HEAD / HTTP/1.1\r\n";
//$in .= "Host: ".$address."\r\n";
//$in .= "Connection: Close\r\n\r\n";
$in = "key1:value1";
socket_write($socket, $in, strlen($in));
$buffer=null;
//while ($out = socket_read($socket, 1024, MSG_WAITALL)) {
while (socket_recv($socket, $buffer, 2048, MSG_WAITALL) === true) {
$buffer .= $buffer;
}
return $buffer;
}
function SockClose($socket) {
socket_shutdown($socket);
socket_close($socket);
}
function getHttp($address) {
$url = 'http://'.$address.':2525/';
$data = array('key1' => 'value1');
// use key 'http' even if you send the request to https://...
$options = array(
'http' => array(
'header' => "Content-type: text/plain\r\n",
'method' => 'POST',
'content' => http_build_query($data),
),
);
$context = stream_context_create($options);
try {
$result = #file_get_contents($url, false, $context);
} catch (Exception $e) {
return false;
}
return $result;
}
Server:
var ENCODING = 'utf8';
// SOCKETS
var net = require('net'); // Load the TCP Library
// HTTP REQUEST
var http = require('http'); // Load the HTTP Library | WEBSOCKETS NEED THIS!!
var querystring = require('querystring'); // Load Query Library
// SOCKET SERVER
net.createServer(function (socket) {
socket.setEncoding(ENCODING);
//socket.write("TEXT FROM SOCKET", ENCODING);
socket.on('data', function (data) {
socket.write("TEXT FROM SOCKET\n", ENCODING);
//socket.end();
});
socket.on('close', function () {
});
}).listen(5000);
// HTTP SERVER
http.createServer(function (req, response) {
var body = 'TEXT FROM HTTP';
response.writeHead(200, {
'Content-Length': body.length,
'Content-Type': 'text/plain' });
response.write(body);
response.end();
}).listen(2525);
And the results:
METHOD 1: 0.385564 errors: 26
METHOD 2: 0.062286 errors: 0
METHOD 3: 0.255954 errors: 0
I think the HTTP method errors are because of simult connections by the same client (PHP).
An as spected, the fast is open + loop + close, and the slowest is HTTP
PD: negatives for..?