Convert HTTP post to JSON Post

I have a .NET application that was doing a regular HTTP post to a third party server. The third party will not longer accept a regular HTTP post and now they want a JSON post. because the way the form is set up, I cannot change the form to do the JSON post so I would like to create some kind of bridge page to receive HTTP and then do the JSON post.

Is this possible?, if so what is the best way to go about it?
BenjospAsked:
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Kiran Paul VJComputer EngineerCommented:
Do a AJax post. Serialize your form data and send it to the third party server as a POST request.

You can use jQuery or plain JavaScript for this.

jQuery

Check this example on how to serialize data http://jsfiddle.net/sxGtM/3/

For plain JS

Use this javascript to convert your data in form to Json

// collect the form data while iterating over the inputs
  var data = {};
  for (var i = 0, ii = form.length; i < ii; ++i) {
    var input = form[i];
    if (input.name) {
      data[input.name] = input.value;
    }
  }

// construct an HTTP request
  var xhr = new XMLHttpRequest();
  xhr.open(form.method, form.action, true);
  xhr.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');

  // send the collected data as JSON
  xhr.send(JSON.stringify(data));

  xhr.onloadend = function () {
    // done
  };
};

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