/// <summary>
/// Executes the command.
/// </summary>
/// <returns>The results of the command.</returns>
public TwitterResponse <T> ExecuteCommand()
{
TwitterResponse <T> twitterResponse = new TwitterResponse <T>();
if (this.OptionalProperties.UseSSL)
{
this.Uri = new Uri(this.Uri.AbsoluteUri.Replace("http://", "https://"));
}
// Loop through all of the custom attributes assigned to the command class
foreach (Attribute attribute in this.GetType().GetCustomAttributes(false))
{
if (attribute is AuthorizedCommandAttribute)
{
if (this.Tokens == null)
{
throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, "Tokens are required for the \"{0}\" command.", this.GetType()));
}
if (string.IsNullOrEmpty(this.Tokens.ConsumerKey) ||
string.IsNullOrEmpty(this.Tokens.ConsumerSecret) ||
string.IsNullOrEmpty(this.Tokens.AccessToken) ||
string.IsNullOrEmpty(this.Tokens.AccessTokenSecret))
{
throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, "Token values cannot be null when executing the \"{0}\" command.", this.GetType()));
}
}
else if (attribute is RateLimitedAttribute)
{
// Get the rate limiting status
if (TwitterRateLimitStatus.GetStatus(this.Tokens).ResponseObject.RemainingHits == 0)
{
throw new TwitterizerException("You are being rate limited.");
}
}
}
// Prepare the query parameters
Dictionary <string, object> queryParameters = new Dictionary <string, object>();
foreach (KeyValuePair <string, object> item in this.RequestParameters)
{
queryParameters.Add(item.Key, item.Value);
}
// Declare the variable to be returned
twitterResponse.ResponseObject = default(T);
twitterResponse.RequestUrl = this.Uri.AbsoluteUri;
RateLimiting rateLimiting;
AccessLevel accessLevel;
byte[] responseData;
try
{
WebRequestBuilder requestBuilder = new WebRequestBuilder(this.Uri, this.Verb, this.Tokens)
{
Multipart = this.Multipart
};
#if !SILVERLIGHT
if (this.OptionalProperties != null)
{
requestBuilder.Proxy = this.OptionalProperties.Proxy;
}
#endif
foreach (var item in queryParameters)
{
requestBuilder.Parameters.Add(item.Key, item.Value);
}
HttpWebResponse response = requestBuilder.ExecuteRequest();
if (response == null)
{
twitterResponse.Result = RequestResult.Unknown;
return(twitterResponse);
}
responseData = ConversionUtility.ReadStream(response.GetResponseStream());
twitterResponse.Content = Encoding.UTF8.GetString(responseData, 0, responseData.Length);
twitterResponse.RequestUrl = requestBuilder.RequestUri.AbsoluteUri;
#if !SILVERLIGHT
// Parse the rate limiting HTTP Headers
rateLimiting = ParseRateLimitHeaders(response.Headers);
// Parse Access Level
accessLevel = ParseAccessLevel(response.Headers);
#else
rateLimiting = null;
accessLevel = AccessLevel.Unknown;
#endif
// Lookup the status code and set the status accordingly
SetStatusCode(twitterResponse, response.StatusCode, rateLimiting);
twitterResponse.RateLimiting = rateLimiting;
twitterResponse.AccessLevel = accessLevel;
}
catch (WebException wex)
{
if (new[]
{
#if !SILVERLIGHT
WebExceptionStatus.Timeout,
WebExceptionStatus.ConnectionClosed,
#endif
WebExceptionStatus.ConnectFailure
}.Contains(wex.Status))
{
twitterResponse.Result = RequestResult.ConnectionFailure;
twitterResponse.ErrorMessage = wex.Message;
return(twitterResponse);
}
// The exception response should always be an HttpWebResponse, but we check for good measure.
HttpWebResponse exceptionResponse = wex.Response as HttpWebResponse;
if (exceptionResponse == null)
{
throw;
}
responseData = ConversionUtility.ReadStream(exceptionResponse.GetResponseStream());
twitterResponse.Content = Encoding.UTF8.GetString(responseData, 0, responseData.Length);
#if !SILVERLIGHT
rateLimiting = ParseRateLimitHeaders(exceptionResponse.Headers);
// Parse Access Level
accessLevel = ParseAccessLevel(exceptionResponse.Headers);
#else
rateLimiting = null;
accessLevel = AccessLevel.Unknown;
#endif
// Try to read the error message, if there is one.
try
{
TwitterErrorDetails errorDetails = SerializationHelper <TwitterErrorDetails> .Deserialize(responseData);
twitterResponse.ErrorMessage = errorDetails.ErrorMessage;
}
catch (Exception)
{
// Occasionally, Twitter responds with XML error data even though we asked for json.
// This is that scenario. We will deal with it by doing nothing. It's up to the developer to deal with it.
}
// Lookup the status code and set the status accordingly
SetStatusCode(twitterResponse, exceptionResponse.StatusCode, rateLimiting);
twitterResponse.RateLimiting = rateLimiting;
twitterResponse.AccessLevel = accessLevel;
if (wex.Status == WebExceptionStatus.UnknownError)
{
throw;
}
return(twitterResponse);
}
try
{
twitterResponse.ResponseObject = SerializationHelper <T> .Deserialize(responseData, this.DeserializationHandler);
}
catch (Newtonsoft.Json.JsonReaderException)
{
twitterResponse.ErrorMessage = "Unable to parse JSON";
twitterResponse.Result = RequestResult.Unknown;
return(twitterResponse);
}
catch (Newtonsoft.Json.JsonSerializationException)
{
twitterResponse.ErrorMessage = "Unable to parse JSON";
twitterResponse.Result = RequestResult.Unknown;
return(twitterResponse);
}
// Pass the current oauth tokens into the new object, so method calls from there will keep the authentication.
twitterResponse.Tokens = this.Tokens;
return(twitterResponse);
}