C# - Json POST request sent but not received by PHP server

Question

I am sending a HTTP request from a C# windowsform application to PHP server hosted on OpenShift (Redhat). I am using the method POST, with Json data.

The problem is that :

the data seemed to be correctly sent (I see the packets in wireshark)
the php script is correctly launch and I see in the log that a POST message is received
but no POST data are beeing received ..

Here is the C# code :

string json = "{\"user\":\"test\"," +
                "\"n\":\"2\"}";

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://........rhcloud.com/webservices.php");

request.Method = "POST";
request.ContentType = "application/json";
request.ContentLength = json.Length;

using (var streamWriter = new StreamWriter(request.GetRequestStream()))
{
    streamWriter.Write(json);
    streamWriter.Close();

    var httpResponse = (HttpWebResponse)request.GetResponse();
    using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
    {
         var result = streamReader.ReadToEnd();
         Debug.WriteLine("R : " + result);
    }
}

Here is the PHP code :

echo "Start Saving ! ";

// Handle Posted Data From C# App
if (isset($_POST) && !empty($_POST))
{
    echo 'Data Recieved';
}
else
{
  // Error
  echo 'No POST Data Found';
}

The function always return : "Start Saving ! No POST Data Found".

Here is the log line on the server :

Here is the line in wireshark :

Is someone seeing the problem? Do not hesitate to tell me if I am not clear. Could it be Openshift which intercept the data ? Does my php file have a problem?

You should make sure you post to exact same domain. I mean that you for example might post data to example.com and example.com makes redirection to www.example.com and then it won't work — Marcin Nabiałek
– Marcin Nabiałek, Commented Jul 28, 2014 at 22:20

Alex · Accepted Answer · 2014-07-28 22:35:12Z

4

PHP's $_POST does not understand JSON.

What you want is something along the lines of

// Error handling is left as an exercise
$input = json_decode(file_get_contents('php://input'), true);

You should then be able to use $input the way you seem to want to use $_POST. See json_decode for additional knobs to twiddle.

answered Jul 28, 2014 at 22:35

Alex

3961 silver badge6 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

user3885760 Over a year ago

Thank you very much ! It totally fixed my problem :)

ralphgabb Over a year ago

This save my life. In Android a simple $_Post will do, but in c# this line of code is the coolest line of code.

Collectives™ on Stack Overflow

C# - Json POST request sent but not received by PHP server

1 Answer 1

2 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related