how to send a http basic auth post?

Question

I have been given the task to create a http post using basic auth. I am developing in C# in an asp.net MVC application.

I have also been given this example.

{
POST /v2/token_endpoint HTTP/1.1
Authorization: Basic Y2xpZW50X2lkOmNsaWVudF9zZWNyZXQ=
Accept: application/json
Content-Type: application/x-www-form-urlencoded
User-Agent: Java/1.6.0_33
Host: api.freeagent.com
Connection: close
Content-Length: 127

grant_type=authorization_code&code=12P3AsFZXwXjd7SLOE1dsaX8oCgix&redirect_uri=http%3A%2F%2Flocalhost%3A8080%2Foauth
}

My question is how do i code this in C#? If more information is need just ask, thanks in advance

edit: I have made some progress but I have not added the grant_type

public void AccessToken(string code)
    {
        string url = @"https://api.freeagent.com/v2/token_endpoint";
        WebClient client = new WebClient();
        string credentials = Convert.ToBase64String(Encoding.ASCII.GetBytes(ApiKey + ":" + ApiSecret));
        client.Headers[HttpRequestHeader.Authorization] = "Basic " + credentials;
        client.Headers[HttpRequestHeader.Accept] = "application/json";
        client.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded";
        client.Headers[HttpRequestHeader.UserAgent] = "Java/1.6.0_33";
        client.Headers[HttpRequestHeader.Host] = "api.freeagent.com";
        client.Headers[HttpRequestHeader.Connection] = "close";
        client.Headers["grant_type"] = "authorization_code";

        var result = client.DownloadString(url);
    }

So how do i add: grant_type=authorization_code&code=12P3AsFZXwXjd7SLOE1dsaX8oCgix&redirect_uri=http%3A%2F%2Flocalhost%3A8080%2Foauth to the post?

Answer 1

You can find here two samples how to make basic auth request with WebRequest and WebClient classes:

http://grahamrhay.wordpress.com/2011/08/22/making-a-post-request-in-c-with-basic-authentication/ http://anishshenoy57.wordpress.com/2013/01/22/basic-http-authentication-using-c/

Basically basic auth it's just Base64(username:password), so it's easy to implement it.

UPDATE1

Here is a sample based on your method:

public void AccessToken(string code)
{
    string url = @"https://api.freeagent.com/v2/token_endpoint";
    WebClient client = new WebClient();
    string credentials = Convert.ToBase64String(Encoding.ASCII.GetBytes(ApiKey + ":" + ApiSecret));
    client.Headers[HttpRequestHeader.Authorization] = "Basic " + credentials;
    client.Headers[HttpRequestHeader.Accept] = "application/json";
    client.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded";
    client.Headers[HttpRequestHeader.UserAgent] = "Java/1.6.0_33";
    client.Headers[HttpRequestHeader.Host] = "api.freeagent.com";
    client.Headers[HttpRequestHeader.Connection] = "close";
    client.Headers["grant_type"] = "authorization_code";

    string data = string.Format(
        "grant_type=authorization_code&code={0}&redirect_uri=http%3A%2F%2Flocalhost%3A8080",
        code);
    var result = client.UploadString(url, data);
}

The only different in calling method in WebClient. DownloadString will do GET request, but for POST you need to use UploadString method