SOCKET的问题，如何传一个变量给SERVER？

[jxyuhua]

说来惭愧，一直搞不懂SOCKET编程。
假设我有一台服务器，它里面是用来计算库存数量的，如www.abc.com/index.php

它要接收这些变量$web,$product_name,$amount,$password,$action

然后返回$product_name的库存数量
我通过CURL可以成功运行,并得到它的库存，
但如何通过SOCKET来实现呢？
我看了一个这样的例子，试了一下：
<?php
$service_port = getservbyname('www', 'tcp');
$address = gethostbyname('www.abc.com');
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
$result = socket_connect($socket, $address, $service_port);
/**这部分不懂，怎样传递变量过去呢？*/
$in = "HEAD / HTTP/1.1\r\n";
$in .= "Host: www.abc.com\r\n";
$in .= "Connection: Close\r\n\r\n";
/**这部分不懂，怎样传递变量过去呢？*/
$out = '';
socket_write($socket, $in, strlen($in));
while ($out = socket_read($socket, 2048)) {
echo $out . '<br />';
}
socket_close($socket);
-----------------------------------------
现在的疑问就是如何通过SOCKET传递变量给服务端？传递过去之后又如何得到返回结果呢？实现上面的例子，请指教。

[ice_berg16]

为啥非用SOCKET？
用fsockopen,fread,fwrite就行

看看这个HttpClient类就明白了
=================================================
<?php

/* Version 0.9, 6th April 2003 - Simon Willison ( http://simon.incutio.com/ )
Manual: http://scripts.incutio.com/httpclient/
*/

class HttpClient {
// Request vars
var $host;
var $port;
var $path;
var $method;
var $postdata = '';
var $cookies = array();
var $referer;
var $accept = 'text/xml,application/xml,application/xhtml+xml,text/html,text/plain,image/png,image/jpeg,image/gif,*/*';
var $accept_encoding = 'gzip';
var $accept_language = 'en-us';
var $user_agent = 'Incutio HttpClient v0.9';
// Options
var $timeout = 20;
var $use_gzip = true;
var $persist_cookies = true; // If true, received cookies are placed in the $this->cookies array ready for the next request
// Note: This currently ignores the cookie path (and time) completely. Time is not important,
// but path could possibly lead to security problems.
var $persist_referers = true; // For each request, sends path of last request as referer
var $debug = false;
var $handle_redirects = true; // Auaomtically redirect if Location or URI header is found
var $max_redirects = 5;
var $headers_only = false; // If true, stops receiving once headers have been read.
// Basic authorization variables
var $username;
var $password;
// Response vars
var $status;
var $headers = array();
var $content = '';
var $errormsg;
// Tracker variables
var $redirect_count = 0;
var $cookie_host = '';
function HttpClient($host, $port=80) {
$this->host = $host;
$this->port = $port;
}
function get($path, $data = false) {
$this->path = $path;
$this->method = 'GET';
if ($data) {
$this->path .= '?'.$this->buildQueryString($data);
}
return $this->doRequest();
}
function post($path, $data) {
$this->path = $path;
$this->method = 'POST';
$this->postdata = $this->buildQueryString($data);
return $this->doRequest();
}
function buildQueryString($data) {
$querystring = '';
if (is_array($data)) {
// Change data in to postable data
foreach ($data as $key => $val) {
if (is_array($val)) {
foreach ($val as $val2) {
$querystring .= urlencode($key).'='.urlencode($val2).'&';
}
} else {
$querystring .= urlencode($key).'='.urlencode($val).'&';
}
}
$querystring = substr($querystring, 0, -1); // Eliminate unnecessary &
} else {
$querystring = $data;
}
return $querystring;
}

[ice_berg16]

function doRequest() {
// Performs the actual HTTP request, returning true or false depending on outcome
if (!$fp = @fsockopen($this->host, $this->port, $errno, $errstr, $this->timeout)) {
// Set error message
switch($errno) {
case -3:
$this->errormsg = 'Socket creation failed (-3)';
case -4:
$this->errormsg = 'DNS lookup failure (-4)';
case -5:
$this->errormsg = 'Connection refused or timed out (-5)';
default:
$this->errormsg = 'Connection failed ('.$errno.')';
$this->errormsg .= ' '.$errstr;
$this->debug($this->errormsg);
}
return false;
}
socket_set_timeout($fp, $this->timeout);
$request = $this->buildRequest();
$this->debug('Request', $request);
fwrite($fp, $request);
// Reset all the variables that should not persist between requests
$this->headers = array();
$this->content = '';
$this->errormsg = '';
// Set a couple of flags
$inHeaders = true;
$atStart = true;
// Now start reading back the response
while (!feof($fp)) {
$line = fgets($fp, 4096);
if ($atStart) {
// Deal with first line of returned data
$atStart = false;
if (!preg_match('/HTTP\/(\\d\\.\\d)\\s*(\\d+)\\s*(.*)/', $line, $m)) {
$this->errormsg = "Status code line invalid: ".htmlentities($line);
$this->debug($this->errormsg);
return false;
}
$http_version = $m[1]; // not used
$this->status = $m[2];
$status_string = $m[3]; // not used
$this->debug(trim($line));
continue;
}
if ($inHeaders) {
if (trim($line) == '') {
$inHeaders = false;
$this->debug('Received Headers', $this->headers);
if ($this->headers_only) {
break; // Skip the rest of the input
}
continue;
}
if (!preg_match('/([^:]+):\\s*(.*)/', $line, $m)) {
// Skip to the next header
continue;
}
$key = strtolower(trim($m[1]));
$val = trim($m[2]);
// Deal with the possibility of multiple headers of same name
if (isset($this->headers[$key])) {
if (is_array($this->headers[$key])) {
$this->headers[$key][] = $val;
} else {
$this->headers[$key] = array($this->headers[$key], $val);
}
} else {
$this->headers[$key] = $val;
}
continue;
}
// We're not in the headers, so append the line to the contents
$this->content .= $line;
}
fclose($fp);
// If data is compressed, uncompress it
if (isset($this->headers['content-encoding']) && $this->headers['content-encoding'] == 'gzip') {
$this->debug('Content is gzip encoded, unzipping it');
$this->content = substr($this->content, 10); // See http://www.php.net/manual/en/function.gzencode.php
$this->content = gzinflate($this->content);
}
// If $persist_cookies, deal with any cookies
if ($this->persist_cookies && isset($this->headers['set-cookie']) && $this->host == $this->cookie_host) {
$cookies = $this->headers['set-cookie'];
if (!is_array($cookies)) {
$cookies = array($cookies);
}
foreach ($cookies as $cookie) {
if (preg_match('/([^=]+)=([^;]+);/', $cookie, $m)) {
$this->cookies[$m[1]] = $m[2];
}
}
// Record domain of cookies for security reasons
$this->cookie_host = $this->host;
}
// If $persist_referers, set the referer ready for the next request
if ($this->persist_referers) {
$this->debug('Persisting referer: '.$this->getRequestURL());
$this->referer = $this->getRequestURL();
}
// Finally, if handle_redirects and a redirect is sent, do that
if ($this->handle_redirects) {
if (++$this->redirect_count >= $this->max_redirects) {
$this->errormsg = 'Number of redirects exceeded maximum ('.$this->max_redirects.')';
$this->debug($this->errormsg);
$this->redirect_count = 0;
return false;
}
$location = isset($this->headers['location']) ? $this->headers['location'] : '';
$uri = isset($this->headers['uri']) ? $this->headers['uri'] : '';
if ($location || $uri) {
$url = parse_url($location.$uri);
// This will FAIL if redirect is to a different site
return $this->get($url['path']);
}
}
return true;
}

[ice_berg16]

function buildRequest() {
$headers = array();
$headers[] = "{$this->method} {$this->path} HTTP/1.0"; // Using 1.1 leads to all manner of problems, such as "chunked" encoding
$headers[] = "Host: {$this->host}";
$headers[] = "User-Agent: {$this->user_agent}";
$headers[] = "Accept: {$this->accept}";
if ($this->use_gzip) {
$headers[] = "Accept-encoding: {$this->accept_encoding}";
}
$headers[] = "Accept-language: {$this->accept_language}";
if ($this->referer) {
$headers[] = "Referer: {$this->referer}";
}
// Cookies
if ($this->cookies) {
$cookie = 'Cookie: ';
foreach ($this->cookies as $key => $value) {
$cookie .= "$key=$value; ";
}
$headers[] = $cookie;
}
// Basic authentication
if ($this->username && $this->password) {
$headers[] = 'Authorization: BASIC '.base64_encode($this->username.':'.$this->password);
}
// If this is a POST, set the content type and length
if ($this->postdata) {
$headers[] = 'Content-Type: application/x-www-form-urlencoded';
$headers[] = 'Content-Length: '.strlen($this->postdata);
}
$request = implode("\r\n", $headers)."\r\n\r\n".$this->postdata;
return $request;
}
function getStatus() {
return $this->status;
}
function getContent() {
return $this->content;
}
function getHeaders() {
return $this->headers;
}
function getHeader($header) {
$header = strtolower($header);
if (isset($this->headers[$header])) {
return $this->headers[$header];
} else {
return false;
}
}
function getError() {
return $this->errormsg;
}
function getCookies() {
return $this->cookies;
}
function getRequestURL() {
$url = 'http://'.$this->host;
if ($this->port != 80) {
$url .= ':'.$this->port;
}
$url .= $this->path;
return $url;
}
// Setter methods
function setUserAgent($string) {
$this->user_agent = $string;
}
function setAuthorization($username, $password) {
$this->username = $username;
$this->password = $password;
}
function setCookies($array) {
$this->cookies = $array;
}
// Option setting methods
function useGzip($boolean) {
$this->use_gzip = $boolean;
}
function setPersistCookies($boolean) {
$this->persist_cookies = $boolean;
}
function setPersistReferers($boolean) {
$this->persist_referers = $boolean;
}
function setHandleRedirects($boolean) {
$this->handle_redirects = $boolean;
}
function setMaxRedirects($num) {
$this->max_redirects = $num;
}
function setHeadersOnly($boolean) {
$this->headers_only = $boolean;
}
function setDebug($boolean) {
$this->debug = $boolean;
}
// "Quick" static methods
function quickGet($url) {
$bits = parse_url($url);
$host = $bits['host'];
$port = isset($bits['port']) ? $bits['port'] : 80;
$path = isset($bits['path']) ? $bits['path'] : '/';
if (isset($bits['query'])) {
$path .= '?'.$bits['query'];
}
$client = new HttpClient($host, $port);
if (!$client->get($path)) {
return false;
} else {
return $client->getContent();
}
}
function quickPost($url, $data) {
$bits = parse_url($url);
$host = $bits['host'];
$port = isset($bits['port']) ? $bits['port'] : 80;
$path = isset($bits['path']) ? $bits['path'] : '/';
$client = new HttpClient($host, $port);
if (!$client->post($path, $data)) {
return false;
} else {
return $client->getContent();
}
}
function debug($msg, $object = false) {
if ($this->debug) {
print '<div style="border: 1px solid red; padding: 0.5em; margin: 0.5em;"><strong>HttpClient Debug:</strong> '.$msg;
if ($object) {
ob_start();
print_r($object);
$content = htmlentities(ob_get_contents());
ob_end_clean();
print '<pre>'.$content.'</pre>';
}
print '</div>';
}
}
}

?>

[jxyuhua]

谢谢，我先看看。

[jxyuhua]

zairwolfo(君子兰)

$req是什么样的格式？name=value的呢？还是直接传值过去？或者其它的？

那个类太长了，看得晕，再次感谢。

[jxyuhua]

多谢ice_berg16(寻梦的稻草人)，看了那个类的官方网站的示例后，终于解决了。

require_once 'class/HttpClient.php';
$params = array('web' => 'www.def.com',
'pwd' => '123456',
'action' => 'check',
'product' => 'ABCDE',
'amt' => 1);
$pageContents = HttpClient::quickPost('http://www.abc.com/index.php', $params);
print_r($pageContents);

[zairwolfo]

你可以借鉴一下一些在线支付文档的说明。

给你传个sample，主要就是用fput去传递，然后根据传回句柄分析。：

$fp = fsockopen ($host, 80, $errno, $errstr, 30);
if (!$fp)
{
echo "$errstr ($errno)<br>\n";
}
else
{
$request="POST http://www.westpay.com.cn/pay/ISPN.asp HTTP/1.0
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */ *
Referer: http://www.westpay.com.cn
Accept-Language: gb2312
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/4.0 (compatible; MSIE 5.0; Windows 98; DigExt)
Host: www.westpay.com.cn
Content-Length: $len
Proxy-Connection: Keep-Alive
Pragma: no-cache

$req";

fputs ($fp, "$request");
while (!feof($fp))
{
$res = fgets ($fp, 1024);
if (strcmp ($res, "VERIFIED") == 0)
{
$msg = "支付通知验证成功";
$state= 1;
}
else if (strcmp ($res, "INVALID") == 0)
{
$msg = "支付通知验证失败";
$state = 2;
}
else
{
$msg = "支付通知验证过程中出现错误";
$state = 3;
}
}
fclose ($fp);
}echo($msg);