套接字和 Http in Loop 中断

Question

我正在尝试测试与 NodeJS 通信的"最佳"解决方案，但我无法进行测试，因为我在循环中犯了错误。

这是我的 NodeJS 代码：

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);

这是我的PHP测试：

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/1.1rn";
    $in .= "Host: ".$address."rn";
    $in .= "Connection: Closernrn";
    //$in = "key1:value1n";
    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://...
    $options = array(
        'http' => array(
            'header'  => "Content-type: text/plainrn",
            'method'  => 'POST',
            'content' => http_build_query($data),
        ),
    );
    $context  = stream_context_create($options);
    $result = file_get_contents($url, false, $context);
    return $result;
}

一个简单的连接工作正常，但是如果我做一个循环，套接字会"断开"连接并且循环失败。失败发生在 HTTP 和套接字方法中。

知道如何解决这个问题吗？

谢谢

Answer 1

我更新代码，搜索错误，我在服务器和客户端代码中发现问题，以下是更新：

客户：

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/1.1rn";
    //$in .= "Host: ".$address."rn";
    //$in .= "Connection: Closernrn";
    $in = "key1:value1";
    socket_write($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://...
    $options = array(
        'http' => array(
            'header'  => "Content-type: text/plainrn",
            'method'  => 'POST',
            'content' => http_build_query($data),
        ),
    );
    $context  = stream_context_create($options);
    try {
        $result = @file_get_contents($url, false, $context);
    } catch (Exception $e) {
        return false;
    }
    return $result;
}

服务器：

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 SOCKETn", 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);

结果是：

方法 1： 0.385564 错误： 26方法 2： 0.062286 错误： 0方法 3： 0.255954 错误： 0

我认为HTTP方法错误是由于同一客户端（PHP）的同步连接。正如所观察的那样，快速是开+环+关闭，最慢的是HTTP。

PD：否定..？