POSTing binary data over http with Python -> PHP

Question

I'm want to post a binary data string from a Python script to a webserver where a PHP script should pick it up and store it. I receive the whatever I echo in my POST part of the php script on the Python side so I assume, the actual POST works. However, I'm posting 23 Bytes and strlen($_POST['data']) stays 0. My PHP script to pickj up the data looks like this:

if (isset($_REQUEST["f"]) && $_REQUEST["f"]=="post_status") {
    $fname = "status/".time().".bin";
    if (file_exists($fname)) {
            $fname = $fname."_".rand();
              if (file_exists($fname)) {
                $fname = $fname."_".rand();
              }
    }
    echo strlen($_POST['data'])." SUCCESS!";

}

and the Python POST script looks like this:

    data = statusstr
    host = HOST
    func = "post_status"
    url = "http://{0}{1}?f={2}".format(host,URI,func)
    print url
    r = urllib2.Request(url, data,{'Content-Type': 'application/octet-stream'})
    r.get_method = lambda: 'PUT'
    response = urllib2.urlopen(r)
    print "RESPONSE " + response.read()

Why does my data not seem to get through, I'm wondering?

Thank you,

Mike Brant · Accepted Answer · 2012-11-02 00:34:34Z

4

PHP will only populate posted values into the $_POST/REQUEST arrays for data that is sent as one of the form data content types. In your case, you need to read in the binary data directly from standard in like this:

$postdata = file_get_contents("php://input");

edited Nov 2, 2012 at 0:34

answered Nov 2, 2012 at 0:04

Mike Brant

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1 Comment

Ivan Kuckir Over a year ago

Sadly, the file_get_contents does not support the "offset" parameter in this case :/

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