错误的请求.通过主机和系统上的curl连接到站点

Question

我cURL在php中有这个代码.

curl_setopt($ch, CURLOPT_URL, trim("http://stackoverflow.com/questions/tagged/java")); 
curl_setopt($ch, CURLOPT_PORT, 80); //ignore explicit setting of port 80
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_ENCODING, "");
curl_setopt($ch, CURLOPT_HTTPHEADER, $v);
curl_setopt($ch, CURLOPT_VERBOSE, true);

内容HTTPHEADER是;

Proxy-Connection: Close
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1017.2 Safari/535.19
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: __qca=blabla
Connection: Close

它们中的每一个都是数组中的单个项目$v.

当我在主机上传文件并运行代码时,我得到的是:

400错误请求

你的浏览器发送了一个无效的请求.

但是当我使用命令行PHP在我的系统上运行它时,我得到的是

< HTTP/1.1 200 OK
< Vary: Accept-Encoding
< Cache-Control: private
< Content-Type: text/html; charset=utf-8
< Content-Encoding: gzip
< Date: Sat, 03 Mar 2012 21:50:17 GMT
< Connection: close
< Set-Cookie: buncha cokkies; path=/; HttpOnly
< Content-Length: 22151
< 
* Closing connection #0

.

它不仅发生在stackoverflow上,这种情况发生在4shared上,但也适用于谷歌和其他人.

谢谢你的帮助.

Answer 1

这更像是一个评论而不是一个答案:从你的问题来看,不明确是什么具体触发400错误,也不是特别意味着它或更具体:它的来源.

那是你服务器的输出吗？这是您用脚本输出的一些反馈(卷曲响应)吗？

为了更好地调试内容,我提出了一种稍微不同的配置形式,您可能在使用curl扩展时感兴趣.有一个很好的函数叫做curl_setopt_array允许你一次设置多个选项.如果其中一个选项失败,它将返回false.它允许您在前面完整配置您的请求.因此,您可以通过第二个(调试)配置更轻松地注入和替换它:

$curlDefault = array(
    CURLOPT_PORT => 80, //ignore explicit setting of port 80
    CURLOPT_RETURNTRANSFER => TRUE,
    CURLOPT_FOLLOWLOCATION => TRUE,
    CURLOPT_ENCODING => '',
    CURLOPT_HTTPHEADER => array(
        'Proxy-Connection: Close',
        'User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1017.2 Safari/535.19',
        'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
        'Accept-Encoding: gzip,deflate,sdch',
        'Accept-Language: en-US,en;q=0.8',
        'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3',
        'Cookie: __qca=blabla',
        'Connection: Close',
    ),
    CURLOPT_VERBOSE => TRUE, // TRUE to output verbose information. Writes output to STDERR, or the file specified using CURLOPT_STDERR.
);

$url = "http://stackoverflow.com/questions/tagged/java";
$handle = curl_init($url);
curl_setopt_array($handle, $curlDefault);
$html = curl_exec($handle);
curl_close($handle);

这可能有助于您改进代码和调试事物.

此外,您正在使用该CURLOPT_VERBOSE选项.这会将详细信息放入STDERR- 因此您无法再跟踪它.相反,您可以将其添加到输出中以更好地查看正在发生的事情:

...
    CURLOPT_VERBOSE => TRUE, // TRUE to output verbose information. Writes output to STDERR, or the file specified using CURLOPT_STDERR.
    CURLOPT_STDERR => $verbose = fopen('php://temp', 'rw+'),
);

$url = "http://stackoverflow.com/questions/tagged/java";
$handle = curl_init($url);
curl_setopt_array($handle, $curlDefault);
$html = curl_exec($handle);
$urlEndpoint = curl_getinfo($handle, CURLINFO_EFFECTIVE_URL);
echo "Verbose information:\n<pre>", !rewind($verbose), htmlspecialchars(stream_get_contents($verbose)), "</pre>\n";
curl_close($handle);

这给出了以下输出:

Verbose information:
* About to connect() to stackoverflow.com port 80 (#0)
*   Trying 64.34.119.12...
* connected
* Connected to stackoverflow.com (64.34.119.12) port 80 (#0)
> GET /questions/tagged/java HTTP/1.1
Host: stackoverflow.com
Proxy-Connection: Close
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1017.2 Safari/535.19
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: __qca=blabla
Connection: Close

< HTTP/1.1 200 OK
< Cache-Control: private
< Content-Type: text/html; charset=utf-8
< Content-Encoding: gzip
< Vary: Accept-Encoding
< Date: Mon, 05 Mar 2012 17:33:11 GMT
< Connection: close
< Content-Length: 10537
< 
* Closing connection #0

如果它们与请求/卷曲相关,它应该为您提供跟踪事物所需的信息.然后,您可以轻松更改参数,看看它是否有所作为.还要将本地安装的curl版本与服务器上的curl版本进行比较.要获得它,请使用curl_version:

$curlVersion = curl_version();
echo $curlVersion['version']; // e.g. 7.24.0

希望这有助于您追踪事情.