Why I get 411 Length required error?

Question

This is how I call a service with .NET:

var requestedURL = \"https://accounts.google.com/o/oauth2/token?code=\" + code + \"&client_id=\" + client_id + \"         


        

Answer 1

When you make a POST HttpWebRequest, you must specify the length of the data you are sending, something like:

string data = "something you need to send"
byte[] postBytes = Encoding.ASCII.GetBytes(data);
request.ContentLength = postBytes.Length;

if you are not sending any data, just set it to 0, that means you just have to add to your code this line:

request.ContentLength = 0;

Usually, if you are not sending any data, chosing the GET method instead is wiser, as you can see in the HTTP RFC