http request using fsockopen

Hello all,

I have a form on page A which is submitted trough a POST method to page B.
On the start of page B I check var $foo. If true I want to "forward" the
request to
page C. Sending the POST data also though the POST method.

I manually create a HTTP request to page C and use the fsockopen method to
sent the request.

As a result I get the requested page C (status code "200 OK" is returned)
but the
POST data is not received/parsed(?). I mean the $_POST array is empty in
page C. All other PHP scripts in page C is executed as expected though.

My questions:
1 Is what I am doing possible in the first place?
2 If so, what is the correct syntax to sent the
POST data ($query) in the entity body of the request?

My configuration:
PHP 4.8
Apache 2.1
Windows XP SP2

My code:

// In Page B from Page A
if ($foo){

$url=URL_BASE; // local constant containing the current domain

if (!preg_match("/http/", $url)) $url = "http://".$url;
$urlParts = parse_url($url);
$host = isset($urlParts['host'])?$urlParts['host']:'localhost';
$port = isset($urlParts['port'])?$urlParts['port']:80;
$path = isset($urlParts['path'])?$urlParts['path']:"/";

$errno=null;
$errstr='';
$timeout=30;

$fp=fsockopen($host,$port,$errno,$errstr,$timeout) ;

if (!$fp){
echo "<br/>\n $errstr ($errno) <br/>\n";
} else {

$query='';
foreach($_POST as $i=>$v){
$query.="$i=$v\r\n";
}

// headers
$out ="POST {$path}page_c.php HTTP/1.1 \r\n";
$out.="Host: $host \r\n";
$out.="Content-length: ".strlen($query)." \r\n";
$out.="Content-type: text/html \r\n";
$out.="Connection: Close \r\n\r\n";
$out.=$query." \r\n";

// send the post data
fwrite($fp,$out);

// write page C (results)
while(!feof($fp)) {
echo fgets($fp,128);
}
fclose($fp);
}
}


// end Code...

Thanks in advance Rob

Hello,

On 10/25/2004 09:46 AM, Rob wrote:
>
> I have a form on page A which is submitted trough a POST method to page B.
> On the start of page B I check var $foo. If true I want to "forward" the
> request to
> page C. Sending the POST data also though the POST method.
>
> I manually create a HTTP request to page C and use the fsockopen method to
> sent the request.
>
> As a result I get the requested page C (status code "200 OK" is returned)
> but the
> POST data is not received/parsed(?). I mean the $_POST array is empty in
> page C. All other PHP scripts in page C is executed as expected though.
>
> My questions:
> 1 Is what I am doing possible in the first place?

Sure.


> 2 If so, what is the correct syntax to sent the
> POST data ($query) in the entity body of the request?

It is hard to tell but you may not be sending the request data correctly.

You may want to try this HTTP client class that you can be sure that it
can compose and send your POST requests properly.

http://www.phpclasses.org/httpclient


--

Regards,
Manuel Lemos

PHP Classes - Free ready to use OOP components written in PHP
http://www.phpclasses.org/

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http://www.phpclasses.org/reviews/

Metastorage - Data object relational mapping layer generator
http://www.meta-language.net/metastorage.html

Rob spilled the following:

>
> I manually create a HTTP request to page C and use the fsockopen method to
> sent the request.
>
> As a result I get the requested page C (status code "200 OK" is returned)
> but the
> POST data is not received/parsed(?). I mean the $_POST array is empty in
> page C. All other PHP scripts in page C is executed as expected though.
>
<snip>
> // headers
> $out ="POST {$path}page_c.php HTTP/1.1 \r\n";
> $out.="Host: $host \r\n";
> $out.="Content-length: ".strlen($query)." \r\n";
> $out.="Content-type: text/html \r\n";

I think you might want to add a:
Content-type: application/x-www-form-urlencoded
here. Also you should urlencode the RHS of the post variables.

> $out.="Connection: Close \r\n\r\n";

Eh? I don't use this myself and it works for me.

HTH

C.