Getting bad request with CURL in PHP posting XML data

I am using PHP CURL to post som开发者_JAVA百科e xml data to another server using that IP, i fullfilled all the requirements for making it work, but still getting an error of "BAD REQUEST".

Have a look on the code below.

 $var2 ="<doc><item>Some content.</item></doc>";
    $url = "server IP";     
    $header  = "POST HTTP/1.1 \r\n";
    $header .= "Content-type: text/xml \r\n";
    $header .= "Content-length: ".strlen($var2)." \r\n";
    $header .= "Content-transfer-encoding: text \r\n";
    $header .= "Connection: close \r\n\r\n"; 
    $header .= $var2;

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($ch, CURLOPT_URL,$url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_TIMEOUT, 4);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $var2);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $header);

    // Get Response
    $data = curl_exec($ch); 


    if(curl_errno($ch))

        print curl_error($ch);
    else
        curl_close($ch);

    echo  $data;

First, you are using this as request-line :

$header  = "POST HTTP/1.1 \r\n";

According to the HTTP 1.1 RFC, the **Request-Line** should look like this :

Request-Line   = Method SP Request-URI SP HTTP-Version CRLF

So, it seems you should add an URI between POST and HTTP/1.1
(But, before coding that, read what I've written in the next paragraphs of my answer)

Then, you are passing a lot of things as CURLOPT_CUSTOMREQUEST.
I don't think you can pass all those header using that option (quoting) :

Valid values are things like "GET", "POST", "CONNECT" and so on;
i.e. Do not enter a whole HTTP request line here.
For instance, entering "GET /index.html HTTP/1.0\r\n\r\n" would be incorrect.

If you want to specify custom headers (it seems you do), you should use the CURLOPT_HTTPHEADER option, instead of CURLOPT_CUSTOMREQUEST (quoting the documentation of the first one) :

An array of HTTP header fields to set, in the format array('Content-type: text/plain', 'Content-length: 100')