CODEWITHSUNDEEP
asmxwebmethodwebhookstrello
Ben Fishbein
Ben Fishbein

Reputation: 411

Receiving a Http Post request on my server

I am attempting to make an asmx file (written in c#) which will receive a POST request from another service, in this case Trello. However I believe I am having trouble receiving a 'JSON payload'. Trello is creating the request so I don't know exactly what their code looks like. The code I am using to recieve the request is of the form:

[WebMethod]
public string TrelloCallback()
{
    //connect to database
    //do stuff
    //return "OK"
}

However this fails immediately, even if my code only consists of "return OK". I have used Applications such as Postman (https://chrome.google.com/webstore/detail/postman-rest-client/fdmmgilgnpjigdojojpjoooidkmcomcm?hl=en) and have successfully sent both post and get request to TrelloCallback using the url excample.com/excample2.asmx/TrelloCallback, however requests from Trello simply fail.

If anyone has any idea about what could be causing this problem, or has solutions for a workaround I would be very grateful.

p.s. The payload is of the form:

{
  action: { ...  }//Action (comment, move)
  model: { ... }//Basic information 
}

Upvotes: 3

Views: 1498

Answers (1)

Ben Fishbein
Ben Fishbein

Reputation: 411

First, you have to make sure you have the line for ScriptService

namespace MyName
{
    ...
        [ScriptService]
    ...
    public class MyClass: MyWebService
    {
    ...

Then you only need to read through the stream to get the Body

StreamReader reader = new StreamReader(Context.Request.InputStream);
Context.Request.InputStream.Position = 0;
String Body= reader.ReadToEnd().ToString();

Context.Request.XXX provides many useful messages for interoperating the request you received.

For example - Context.Request.Headers, Context.Request.RawUrl, and Context.Request.HttpMethod.

Upvotes: 4

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