protected override Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
OAuthTokenPair tokenPair = null;
object tokenPairObject;
string tokenPairName = typeof(OAuthTokenPair).FullName;
if (request.Properties.TryGetValue(tokenPairName, out tokenPairObject))
{
request.Properties.Remove(tokenPairName);
tokenPair = (OAuthTokenPair)tokenPairObject;
}
List <KeyValuePair <string, string> > customPairs = null;
//This next piece is not standard OAuth. Unclear what it is for.
if (tokenPair != null && !String.IsNullOrWhiteSpace(tokenPair.UserAuthFactor))
{
customPairs = new List <KeyValuePair <string, string> >();
customPairs.Add(new KeyValuePair <string, string>("user_auth_factor", tokenPair.UserAuthFactor));
}
ObjectContent content = request.Content as ObjectContent;
// Compute OAuth header
string normalizedUri;
string normalizedParameters;
string header = _oAuthBase.GenerateOAuthHeader(
request.RequestUri,
_consumerKey,
_consumerSecret,
tokenPair == null ? null : tokenPair.Token,
tokenPair == null ? null : tokenPair.TokenSecret,
request.Method.Method,
content == null ? new byte[0] : content.ReadAsByteArrayAsync().Result,
customPairs,
out normalizedUri,
out normalizedParameters);
request.Headers.Authorization = new AuthenticationHeaderValue("OAuth", header);
return(base.SendAsync(request, cancellationToken));
}
