Using MVC2 ActionResult, how can I redirect (Post) to another site

Question

I have a page that collects data and 'POST's to another site. I could just put he site url in the action of the form tag but I would like to record the information in my database prior to switching sites. In the ActionResult so far I have:

    [HttpPost]
    public ActionResult MyPage(MyPageModel model)
    {
        if (ModelState.IsValid)
        {
            StoreDate(model.fld1, model.fld2)
            var encoding = new ASCIIEncoding();
            var postData = "";
            foreach (String postKey in Request.Form)
            {
                var postValue = Encode(Request.Form[postKey]);
                postData += string.Format("&{0}={1}", postKey, postValue);
            }
            var data = encoding.GetBytes(postData);

            // Prepare web request...
            var myRequest = (HttpWebRequest)WebRequest.Create("https://www.site2.com");
            myRequest.Method = "POST";
            myRequest.ContentType = "application/x-www-form-urlencoded";
            myRequest.ContentLength = data.Length;

            // Send the data.
            Stream newStream = myRequest.GetRequestStream();
            newStream.Write(data, 0, data.Length);
            newStream.Flush();
            newStream.Close();

Does anyone know how to finish this and use the proper 'return' varient to have this post the data to the other site.

I have edited the snippet based on a response below.

score 0 · Answer 1 · edited May 23 '17 at 12:11

0

The POST has already happened, so there's not going to be a magic bullet (i.e. a simple ActionResult) that will work for you. Since you're handling the POST response on your server, you'll need to recreate the POST request to the target server yourself. To do that you'll need to leverage an HttpWebRequest vis a vis this answer. After getting the response back from the HttpWebRequest, you'll need to pass that response back, probably via a ContentResult. All in all, it will be non-trivial, but it is possible.

Update: Based on your snippet, I'd try adding the following:

WebResponse res = myRequest.GetResponse();
StreamReader sr = new StreamReader(res.GetResponseStream());
string returnvalue = sr.ReadToEnd();
return Content(returnValue);

edited May 23 '17 at 12:11

Community

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1

answered Jan 07 '11 at 19:27

Kirk Woll

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I had this at one point but didn't know the next steps. How would I built the ContentResult from the response? – Randy Jan 07 '11 at 20:54
@Randy, I've modified my answer with a suggestion. – Kirk Woll Jan 07 '11 at 21:08
Thanks Kirk, that is what I was missing. – Randy Jan 07 '11 at 21:20

dotjoe · Answer 2 · 2011-01-11T02:09:33.283

0

Another option would be to point the form action at the other site and do an ajax post to your server before submitting the form. That would be much easier than playing man-in-the-middle with HttpWebRequest.

edited Jan 11 '11 at 02:09

answered Jan 07 '11 at 20:01

dotjoe

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Man in the middle is right. This kind of question always smells fishy to me. – Peter T. LaComb Jr. Jan 07 '11 at 20:16

Using MVC2 ActionResult, how can I redirect (Post) to another site

2 Answers2