/// <summary>
/// Adds the OAuth Echo header to the supplied web request.
/// </summary>
/// <param name="request">The request.</param>
/// <param name="tokens">The tokens.</param>
public static void AddOAuthEchoHeader(WebRequest request, OAuthTokens tokens)
{
WebRequestBuilder builder = new WebRequestBuilder(
new Uri("https://api.twitter.com/1.1/account/verify_credentials.json"),
HTTPVerb.POST,
tokens);
builder.PrepareRequest();
request.Headers.Add("X-Verify-Credentials-Authorization", builder.GenerateAuthorizationHeader());
request.Headers.Add("X-Auth-Service-Provider", "https://api.twitter.com/1.1/account/verify_credentials.json");
}
