GoogleSession

gistfile1.cs

public class GoogleSession : IDisposable
{
	/// <summary>
	/// Auth token.
	/// </summary>
	private string auth;

	/// <summary>
	/// Initialize request.
	/// </summary>
	/// <param name="auth"></param>
	public GoogleSession(string auth)
	{
		this.auth = auth;
	}

	/// <summary>
	/// Create a google request and get the response.
	/// </summary>
	/// <param name="url"></param>
	/// <param name="parameters"></param>
	/// <returns></returns>
	public WebResponse GetResponse(string url, params GoogleParameter[] parameters)
	{
		// Format the parameters.
		string formattedParameters = string.Empty;
		foreach (var par in parameters)
			formattedParameters += string.Format("{0}={1}&", par.Name, par.Value);
		formattedParameters = formattedParameters.TrimEnd('&');

		// Create a request with or without parameters.
		HttpWebRequest request = null;
		if (formattedParameters.Length > 0)
			request = (HttpWebRequest)WebRequest.Create(string.Format("{0}?{1}",
				url, formattedParameters));
		else
			request = (HttpWebRequest)WebRequest.Create(url);

		// Add the authentication header.
		request.Headers.Add("Authorization", "GoogleLogin auth=" + auth);

		// Get the response, validate and return.
		HttpWebResponse response = request.GetResponse() as HttpWebResponse;
		if (response == null)
			throw new GoogleResponseNullException();
		else if (response.StatusCode != HttpStatusCode.OK)
			throw new GoogleResponseException(response.StatusCode,
				response.StatusDescription);
		return response;
	}

	/// <summary>
	/// Create a google request and get the response stream.
	/// </summary>
	/// <param name="url"></param>
	/// <param name="parameters"></param>
	/// <returns></returns>
	public Stream GetResponseStream(string url, params GoogleParameter[] parameters)
	{
		return GetResponse(url, parameters).GetResponseStream();
	}

	/// <summary>
	/// Create a google request and get the page source.
	/// </summary>
	/// <param name="url"></param>
	/// <param name="parameters"></param>
	/// <returns></returns>
	public string GetSource(string url, params GoogleParameter[] parameters)
	{
		using (StreamReader reader = new StreamReader(
			GetResponseStream(url, parameters)))
		{
			return reader.ReadToEnd();
		}
	}

	/// <summary>
	/// Create a google request and get the feed.
	/// </summary>
	/// <param name="url"></param>
	/// <param name="parameters"></param>
	/// <returns></returns>
	public SyndicationFeed GetFeed(string url, params GoogleParameter[] parameters)
	{
		// Load the stream into the reader.
		using (StreamReader reader = new StreamReader(
			GetResponseStream(url, parameters)))
		{
			// Create an xml reader out of the stream reader.
			using (XmlReader xmlReader = XmlReader.Create(reader,
				new XmlReaderSettings()))
			{
				// Get a syndication feed out of the xml.
				return SyndicationFeed.Load(xmlReader);   
			}               
		}
	}

	/// <summary>
	/// Clean up the authentication token.
	/// </summary>
	public void Dispose()
	{
		auth = null;
	}
}