Untested performance improvements with uploads, in short the image is directly stored to the upload stream instead of writing a stream to a byte[]. Expecting a small performance improvement, and a lot less memory usage while uploading.

git-svn-id: http://svn.code.sf.net/p/greenshot/code/trunk@2125 7dccd23d-a4a3-4e1f-8c07-b4c1b4018ab4

GreenshotImgurPlugin/ImgurPlugin.cs

@@ -138,8 +138,6 @@ namespace GreenshotImgurPlugin {
 		/// <returns>true if the upload succeeded</returns>
 		public bool Upload(ICaptureDetails captureDetails, Image image, out string uploadURL) {
 			OutputSettings outputSettings = new OutputSettings(config.UploadFormat, config.UploadJpegQuality, config.UploadReduceColors);
-			using (MemoryStream stream = new MemoryStream()) {
-				ImageOutput.SaveToStream(image, stream, outputSettings);
 			try {
 				string filename = Path.GetFileName(FilenameHelper.GetFilename(config.UploadFormat, captureDetails));
 				ImgurInfo imgurInfo = null;
@@ -147,7 +145,7 @@ namespace GreenshotImgurPlugin {
 				// Run upload in the background
 				new PleaseWaitForm().ShowAndWait(Attributes.Name, Language.GetString("imgur", LangKey.communication_wait), 
 					delegate() {
-							imgurInfo = ImgurUtils.UploadToImgur(stream.GetBuffer(), (int)stream.Length, captureDetails.Title, filename);
+						imgurInfo = ImgurUtils.UploadToImgur(image, outputSettings, captureDetails.Title, filename);
 						LOG.InfoFormat("Storing imgur upload for hash {0} and delete hash {1}", imgurInfo.Hash, imgurInfo.DeleteHash);
 						config.ImgurUploadHistory.Add(imgurInfo.Hash, imgurInfo.DeleteHash);
 						config.runtimeImgurHistory.Add(imgurInfo.Hash, imgurInfo);
@@ -174,7 +172,6 @@ namespace GreenshotImgurPlugin {
 				LOG.Error(e);
 				MessageBox.Show(Language.GetString("imgur", LangKey.upload_failure) + " " + e.Message);
 			}
-			}
 			uploadURL = null;
 			return false;
 		}

GreenshotImgurPlugin/ImgurUtils.cs

@@ -29,6 +29,7 @@ using System.Web;
 
 using GreenshotPlugin.Core;
 using Greenshot.IniFile;
+using Greenshot.Plugin;
 
 namespace GreenshotImgurPlugin {
 	/// <summary>
@@ -97,9 +98,12 @@ namespace GreenshotImgurPlugin {
 		/// Do the actual upload to Imgur
 		/// For more details on the available parameters, see: http://api.imgur.com/resources_anon
 		/// </summary>
-		/// <param name="imageData">byte[] with image data</param>
-		/// <returns>ImgurResponse</returns>
-		public static ImgurInfo UploadToImgur(byte[] imageData, int dataLength, string title, string filename) {
+		/// <param name="image">Image to upload</param>
+		/// <param name="outputSettings">OutputSettings for the image file format</param>
+		/// <param name="title">Title</param>
+		/// <param name="filename">Filename</param>
+		/// <returns>ImgurInfo with details</returns>
+		public static ImgurInfo UploadToImgur(Image image, OutputSettings outputSettings, string title, string filename) {
 			IDictionary<string, object> uploadParameters = new Dictionary<string, object>();
 
 			string responseString = null;
@@ -118,19 +122,18 @@ namespace GreenshotImgurPlugin {
 				HttpWebRequest webRequest = (HttpWebRequest)NetworkHelper.CreateWebRequest(config.ImgurApiUrl + "/upload.xml?" + NetworkHelper.GenerateQueryParameters(uploadParameters));
 
 				webRequest.Method = "POST";
-				webRequest.ContentType = "image/png";
+				webRequest.ContentType = "image/" + outputSettings.Format.ToString();
 				webRequest.ServicePoint.Expect100Continue = false;
 				using (var requestStream = webRequest.GetRequestStream()) {
-					requestStream.Write(imageData, 0, dataLength);
+					ImageOutput.SaveToStream(image, requestStream, outputSettings);
 				}
 	
 				using (WebResponse response = webRequest.GetResponse()) {
 					LogCredits(response);
-					Stream responseStream = response.GetResponseStream();
-					StreamReader responseReader = new StreamReader(responseStream);
-					responseString = responseReader.ReadToEnd();
+					using (StreamReader reader = new StreamReader(response.GetResponseStream(), true)) {
+						responseString = reader.ReadToEnd();
+					}
 				}
-
 			} else {
 				OAuthSession oAuth = new OAuthSession(ImgurCredentials.CONSUMER_KEY, ImgurCredentials.CONSUMER_SECRET);
 				oAuth.BrowserSize = new Size(650, 500);
@@ -165,7 +168,7 @@ namespace GreenshotImgurPlugin {
 					if (filename != null) {
 						uploadParameters.Add("name", filename);
 					}
-					uploadParameters.Add("image", new FileParameter(imageData, filename, "image/png", dataLength));
+					uploadParameters.Add("image", new ImageParameter(image, outputSettings, filename));
 					responseString = oAuth.MakeRequest(HTTPMethod.POST, apiUrl, uploadParameters, null, null);
 				} catch (Exception ex) {
 					LOG.Error("Upload to imgur gave an exeption: ", ex);
@@ -211,9 +214,9 @@ namespace GreenshotImgurPlugin {
 			try {
 				using (WebResponse response = webRequest.GetResponse()) {
 					LogCredits(response);
-					Stream responseStream = response.GetResponseStream();
-					StreamReader responseReader = new StreamReader(responseStream);
-					responseString = responseReader.ReadToEnd();
+					using (StreamReader reader = new StreamReader(response.GetResponseStream(), true)) {
+						responseString = reader.ReadToEnd();
+					}
 				}
 			} catch (WebException wE) {
 				if (wE.Status == WebExceptionStatus.ProtocolError) {
@@ -243,9 +246,9 @@ namespace GreenshotImgurPlugin {
 				string responseString;
 				using (WebResponse response = webRequest.GetResponse()) {
 					LogCredits(response);
-					Stream responseStream = response.GetResponseStream();
-					StreamReader responseReader = new StreamReader(responseStream);
-					responseString = responseReader.ReadToEnd();
+					using (StreamReader reader = new StreamReader(response.GetResponseStream(), true)) {
+						responseString = reader.ReadToEnd();
+					}
 				}
 				LOG.InfoFormat("Delete result: {0}", responseString);
 			} catch (WebException wE) {

GreenshotPhotobucketPlugin/PhotobucketPlugin.cs

@@ -110,8 +110,6 @@ namespace GreenshotPhotobucketPlugin {
 		/// <returns>true if the upload succeeded</returns>
 		public bool Upload(ICaptureDetails captureDetails, Image image, out string uploadURL) {
 			OutputSettings outputSettings = new OutputSettings(config.UploadFormat, config.UploadJpegQuality, config.UploadReduceColors);
-			using (MemoryStream stream = new MemoryStream()) {
-				ImageOutput.SaveToStream(image, stream, outputSettings);
 			try {
 				string filename = Path.GetFileName(FilenameHelper.GetFilename(config.UploadFormat, captureDetails));
 				PhotobucketInfo photobucketInfo = null;
@@ -119,7 +117,7 @@ namespace GreenshotPhotobucketPlugin {
 				// Run upload in the background
 				new PleaseWaitForm().ShowAndWait(Attributes.Name, Language.GetString("photobucket", LangKey.communication_wait), 
 					delegate() {
-							photobucketInfo = PhotobucketUtils.UploadToPhotobucket(stream.GetBuffer(), (int)stream.Length, captureDetails.Title, filename);
+						photobucketInfo = PhotobucketUtils.UploadToPhotobucket(image, outputSettings, captureDetails.Title, filename);
 					}
 				);
 				// This causes an exeption if the upload failed :)
@@ -141,7 +139,6 @@ namespace GreenshotPhotobucketPlugin {
 				LOG.Error(e);
 				MessageBox.Show(Language.GetString("photobucket", LangKey.upload_failure) + " " + e.Message);
 			}
-			}
 			uploadURL = null;
 			return false;
 		}

GreenshotPhotobucketPlugin/PhotobucketUtils.cs

@@ -29,6 +29,7 @@ using System.Web;
 
 using GreenshotPlugin.Core;
 using Greenshot.IniFile;
+using Greenshot.Plugin;
 
 namespace GreenshotPhotobucketPlugin {
 	/// <summary>
@@ -47,7 +48,7 @@ namespace GreenshotPhotobucketPlugin {
 		/// </summary>
 		/// <param name="imageData">byte[] with image data</param>
 		/// <returns>PhotobucketResponse</returns>
-		public static PhotobucketInfo UploadToPhotobucket(byte[] imageData, int dataLength, string title, string filename) {
+		public static PhotobucketInfo UploadToPhotobucket(Image image, OutputSettings outputSettings, string title, string filename) {
 			string responseString;
 
 			OAuthSession oAuth = new OAuthSession("149833145", "ebd828180b11103c010c7e71c66f6bcb");
@@ -77,7 +78,7 @@ namespace GreenshotPhotobucketPlugin {
 			oAuth.Token = config.Token;
 			oAuth.TokenSecret = config.TokenSecret;
 
-			Dictionary<string ,string> parameters = new Dictionary<string, string>();
+			Dictionary<string, object> parameters = new Dictionary<string, object>();
 			// add album
 			parameters.Add("id", "Apex75/greenshot");
 			// add type
@@ -95,7 +96,7 @@ namespace GreenshotPhotobucketPlugin {
 				oAuth.Sign(HTTPMethod.POST, apiUrl, parameters);
 				apiUrl = apiUrl.Replace("api.photobucket.com", config.SubDomain);
 				// Add image
-				parameters.Add("uploadfile", new FileParameter(imageData, filename, "image/png", dataLength));
+				parameters.Add("uploadfile", new ImageParameter(image, outputSettings, filename));
 				responseString = oAuth.MakeRequest(HTTPMethod.POST, apiUrl, parameters, null, null);
 			} catch (Exception ex) {
 				LOG.Error("Error uploading to Photobucket.", ex);

GreenshotPlugin/Core/NetworkHelper.cs

@@ -30,6 +30,7 @@ using Greenshot.IniFile;
 using System.Security.Cryptography.X509Certificates;
 using System.Net.Security;
 using System.Web;
+using Greenshot.Plugin;
 
 namespace GreenshotPlugin.Core {
 	/// <summary>
@@ -58,9 +59,10 @@ namespace GreenshotPlugin.Core {
 				HttpWebRequest request = (HttpWebRequest)CreateWebRequest(url);
 				HttpWebResponse response = (HttpWebResponse)request.GetResponse();
 				if (request.HaveResponse) {
-					StreamReader reader = new StreamReader(response.GetResponseStream(), encoding);
+					using (StreamReader reader = new StreamReader(response.GetResponseStream(), encoding)) {
 						return reader.ReadToEnd();
 					}
+				}
 				
 			} catch (Exception e) {
 				LOG.Error("Problem downloading from: " + url.ToString(), e);
@@ -241,5 +243,139 @@ namespace GreenshotPlugin.Core {
 
 			return sb.ToString();
 		}
+
+		/// <summary>
+		/// Write Multipart Form Data directly to the HttpWebRequest response stream
+		/// </summary>
+		/// <param name="webRequest">HttpWebRequest to write the multipart form data to</param>
+		/// <param name="postParameters">Parameters to include in the multipart form data</param>
+		public static void WriteMultipartFormData(HttpWebRequest webRequest, IDictionary<string, object> postParameters) {
+			string boundary = String.Format("----------{0:N}", Guid.NewGuid());
+			webRequest.ContentType = "multipart/form-data; boundary=" + boundary;
+
+			bool needsCLRF = false;
+			using (Stream formDataStream = webRequest.GetRequestStream()) {
+				foreach (var param in postParameters) {
+					// Thanks to feedback from commenters, add a CRLF to allow multiple parameters to be added.
+					// Skip it on the first parameter, add it to subsequent parameters.
+					if (needsCLRF) {
+						formDataStream.Write(Encoding.UTF8.GetBytes("\r\n"), 0, Encoding.UTF8.GetByteCount("\r\n"));
+					}
+
+					needsCLRF = true;
+
+					if (param.Value is IBinaryParameter) {
+						IBinaryParameter binaryParameter = (IBinaryParameter)param.Value;
+						binaryParameter.WriteFormDataToStream(boundary, param.Key, formDataStream);
+					} else {
+						string postData = string.Format("--{0}\r\nContent-Disposition: form-data; name=\"{1}\"\r\n\r\n{2}",
+							boundary,
+							param.Key,
+							param.Value);
+						formDataStream.Write(Encoding.UTF8.GetBytes(postData), 0, Encoding.UTF8.GetByteCount(postData));
+					}
+				}
+
+				// Add the end of the request.  Start with a newline
+				string footer = "\r\n--" + boundary + "--\r\n";
+				formDataStream.Write(Encoding.UTF8.GetBytes(footer), 0, Encoding.UTF8.GetByteCount(footer));
+			}
+		}
+	}
+
+	public interface IBinaryParameter {
+		void WriteFormDataToStream(string boundary, string key, Stream formDataStream);
+		void WriteToStream(Stream formDataStream);
+		string ToBase64String();
+	}
+
+	/// <summary>
+	/// A container to supply files to a Multi-part form data upload
+	/// </summary>
+	public class FileParameter : IBinaryParameter {
+		private byte[] file;
+		private string fileName;
+		private string contentType;
+		private int fileSize;
+		public FileParameter(byte[] file) : this(file, null) {
+		}
+		public FileParameter(byte[] file, string filename) : this(file, filename, null) {
+		}
+		public FileParameter(byte[] file, string filename, string contenttype) : this(file, filename, contenttype, 0) {
+		}
+		public FileParameter(byte[] file, string filename, string contenttype, int filesize) {
+			this.file = file;
+			this.fileName = filename;
+			this.contentType = contenttype;
+			if (filesize == 0) {
+				this.fileSize = file.Length;
+			} else {
+				this.fileSize = filesize;
+			}
+		}
+
+		public string ToBase64String() {
+			return System.Convert.ToBase64String(file, 0, fileSize);
+		}
+
+		public void WriteFormDataToStream(string boundary, string key, Stream formDataStream) {
+			// Add just the first part of this param, since we will write the file data directly to the Stream
+			string header = string.Format("--{0}\r\nContent-Disposition: form-data; name=\"{1}\"; filename=\"{2}\";\r\nContent-Type: {3}\r\n\r\n",
+				boundary,
+				key,
+				fileName ?? key,
+				contentType ?? "application/octet-stream");
+
+			formDataStream.Write(Encoding.UTF8.GetBytes(header), 0, Encoding.UTF8.GetByteCount(header));
+
+			// Write the file data directly to the Stream, rather than serializing it to a string.
+			formDataStream.Write(file, 0, fileSize);
+		}
+
+		public void WriteToStream(Stream dataStream) {
+			// Write the file data directly to the Stream, rather than serializing it to a string.
+			dataStream.Write(file, 0, fileSize);
+		}
+	}
+
+	/// <summary>
+	/// A container to supply images to a Multi-part form data upload
+	/// </summary>
+	public class ImageParameter : IBinaryParameter {
+		private Image image;
+		private OutputSettings outputSettings;
+		private string fileName;
+
+		public ImageParameter(Image image, OutputSettings outputSettings, string filename) {
+			this.image = image;
+			this.outputSettings = outputSettings;
+			this.fileName = filename;
+		}
+
+		public string ToBase64String() {
+			using (MemoryStream stream = new MemoryStream()) {
+				ImageOutput.SaveToStream(image, stream, outputSettings);
+				return System.Convert.ToBase64String(stream.GetBuffer(), 0, (int)stream.Length);
+			}
+		}
+
+		public void WriteFormDataToStream(string boundary, string key, Stream formDataStream) {
+			// Add just the first part of this param, since we will write the file data directly to the Stream
+			string header = string.Format("--{0}\r\nContent-Disposition: form-data; name=\"{1}\"; filename=\"{2}\";\r\nContent-Type: {3}\r\n\r\n",
+				boundary,
+				key,
+				fileName ?? key,
+				"image/" + outputSettings.Format.ToString());
+
+			formDataStream.Write(Encoding.UTF8.GetBytes(header), 0, Encoding.UTF8.GetByteCount(header));
+
+			// Write the file data directly to the Stream, rather than serializing it to a string.
+			ImageOutput.SaveToStream(image, formDataStream, outputSettings);
+		}
+
+		public void WriteToStream(Stream dataStream) {
+			// Write the file data directly to the Stream, rather than serializing it to a string.
+			ImageOutput.SaveToStream(image, dataStream, outputSettings);
+		}
 	}
 }

GreenshotPlugin/Core/OAuthHelper.cs

@@ -28,6 +28,7 @@ using System.IO;
 using System.Text.RegularExpressions;
 using GreenshotPlugin.Controls;
 using System.Drawing;
+using Greenshot.Plugin;
 
 namespace GreenshotPlugin.Core {
 	/// <summary>
@@ -41,22 +42,6 @@ namespace GreenshotPlugin.Core {
 		
 	public enum HTTPMethod { GET, POST, PUT, DELETE };
 
-	public class FileParameter {
-		public byte[] File { get; set; }
-		public string FileName { get; set; }
-		public string ContentType { get; set; }
-		public int FileSize {get; set; }
-		public FileParameter(byte[] file) : this(file, null) { }
-		public FileParameter(byte[] file, string filename) : this(file, filename, null) { }
-		public FileParameter(byte[] file, string filename, string contenttype) : this(file, filename, contenttype, 0) { }
-		public FileParameter(byte[] file, string filename, string contenttype, int filesize) {
-			File = file;
-			FileName = filename;
-			ContentType = contenttype;
-			FileSize = filesize;
-		}
-	}
-
 	public class OAuthSession {
 		private static readonly log4net.ILog LOG = log4net.LogManager.GetLogger(typeof(OAuthSession));
 		protected const string OAUTH_VERSION = "1.0";
@@ -393,7 +378,7 @@ namespace GreenshotPlugin.Core {
 		/// <param name="contentType">contenttype for the postdata</param>
 		/// <param name="postData">Data to post (MemoryStream)</param>
 		/// <returns>The web server response.</returns>
-		public string MakeOAuthRequest(HTTPMethod method, string requestURL, IDictionary<string, object> parameters, string contentType, MemoryStream postData) {
+		public string MakeOAuthRequest(HTTPMethod method, string requestURL, IDictionary<string, object> parameters, string contentType, IBinaryParameter postData) {
 			if (parameters == null) {
 				parameters = new Dictionary<string, object>();
 			}
@@ -495,9 +480,9 @@ namespace GreenshotPlugin.Core {
 		/// <param name="requestURL"></param>
 		/// <param name="parameters"></param>
 		/// <param name="contentType"></param>
-		/// <param name="postData"></param>
+		/// <param name="postData">IBinaryParameter</param>
 		/// <returns>Response from server</returns>
-		public string MakeRequest(HTTPMethod method, string requestURL, IDictionary<string, object> parameters, string contentType, MemoryStream postData) {
+		public string MakeRequest(HTTPMethod method, string requestURL, IDictionary<string, object> parameters, string contentType, IBinaryParameter postData) {
 			if (parameters == null) {
 				throw new ArgumentNullException("parameters");
 			}
@@ -539,19 +524,14 @@ namespace GreenshotPlugin.Core {
 			}
 
 			if (HTTPMethod.POST == method && postData == null && requestParameters != null && requestParameters.Count > 0) {
-				
 				if (UseMultipartFormData) {
-					byte [] data = GetMultipartFormData(requestParameters, out contentType);
-					webRequest.ContentType = contentType;
-					using (var requestStream = webRequest.GetRequestStream()) {
-						requestStream.Write(data, 0, data.Length);
-					}
+					NetworkHelper.WriteMultipartFormData(webRequest, requestParameters);
 				} else {
 					StringBuilder form = new StringBuilder();
 					foreach (string parameterKey in requestParameters.Keys) {
-						if (parameters[parameterKey] is FileParameter) {
-							FileParameter fileParameter = parameters[parameterKey] as FileParameter;
-							form.AppendFormat(System.Globalization.CultureInfo.InvariantCulture, "{0}={1}&", UrlEncode3986(parameterKey), UrlEncode3986(System.Convert.ToBase64String(fileParameter.File, 0, fileParameter.FileSize != 0 ? fileParameter.FileSize : fileParameter.File.Length)));
+						if (parameters[parameterKey] is IBinaryParameter) {
+							IBinaryParameter binaryParameter = parameters[parameterKey] as IBinaryParameter;
+							form.AppendFormat(System.Globalization.CultureInfo.InvariantCulture, "{0}={1}&", UrlEncode3986(parameterKey), UrlEncode3986(binaryParameter.ToBase64String()));
 						} else {
 							form.AppendFormat(System.Globalization.CultureInfo.InvariantCulture, "{0}={1}&", UrlEncode3986(parameterKey), UrlEncode3986(string.Format("{0}",parameters[parameterKey])));
 						}
@@ -570,7 +550,7 @@ namespace GreenshotPlugin.Core {
 				webRequest.ContentType = contentType;
 				if (postData != null) {
 					using (var requestStream = webRequest.GetRequestStream()) {
-						requestStream.Write(postData.GetBuffer(), 0, (int)postData.Length);
+						postData.WriteToStream(requestStream);
 					}
 				}
 			}
@@ -583,85 +563,19 @@ namespace GreenshotPlugin.Core {
 			return responseData;
 		}
 
-		/// <summary>
-		/// Create a Multipart Form Data as byte[]
-		/// </summary>
-		/// <param name="postParameters">Parameters to include in the multipart form data</param>
-		/// <param name="contentType">out parameter for contenttype</param>
-		/// <returns>byte[] with Multipart Form Data which can be used to upload</returns>
-		private static byte[] GetMultipartFormData(IDictionary<string, object> postParameters, out string contentType) {
-			string boundary = String.Format("----------{0:N}", Guid.NewGuid());
-			contentType = "multipart/form-data; boundary=" + boundary;
-			Stream formDataStream = new MemoryStream();
-			bool needsCLRF = false;
- 
-			foreach (var param in postParameters) {
-				// Thanks to feedback from commenters, add a CRLF to allow multiple parameters to be added.
-				// Skip it on the first parameter, add it to subsequent parameters.
-				if (needsCLRF) {
-					formDataStream.Write(Encoding.UTF8.GetBytes("\r\n"), 0, Encoding.UTF8.GetByteCount("\r\n"));
-				}
-
-				needsCLRF = true;
-
-				if (param.Value is FileParameter) {
-					FileParameter fileToUpload = (FileParameter)param.Value;
-
-					// Add just the first part of this param, since we will write the file data directly to the Stream
-					string header = string.Format("--{0}\r\nContent-Disposition: form-data; name=\"{1}\"; filename=\"{2}\";\r\nContent-Type: {3}\r\n\r\n",
-						boundary,
-						param.Key,
-						fileToUpload.FileName ?? param.Key,
-						fileToUpload.ContentType ?? "application/octet-stream");
-
-					formDataStream.Write(Encoding.UTF8.GetBytes(header), 0, Encoding.UTF8.GetByteCount(header));
-
-					// Write the file data directly to the Stream, rather than serializing it to a string.
-					if (fileToUpload.FileSize > 0) {
-						formDataStream.Write(fileToUpload.File, 0, fileToUpload.FileSize);
-					} else {
-						formDataStream.Write(fileToUpload.File, 0, fileToUpload.File.Length);
-					}
-				} else {
-					string postData = string.Format("--{0}\r\nContent-Disposition: form-data; name=\"{1}\"\r\n\r\n{2}",
-						boundary,
-						param.Key,
-						param.Value);
-					formDataStream.Write(Encoding.UTF8.GetBytes(postData), 0, Encoding.UTF8.GetByteCount(postData));
-				}
-			}
-
-			// Add the end of the request.  Start with a newline
-			string footer = "\r\n--" + boundary + "--\r\n";
-			formDataStream.Write(Encoding.UTF8.GetBytes(footer), 0, Encoding.UTF8.GetByteCount(footer));
-
-			// Dump the Stream into a byte[]
-			formDataStream.Position = 0;
-			byte[] formData = new byte[formDataStream.Length];
-			formDataStream.Read(formData, 0, formData.Length);
-			formDataStream.Close();
-
-			return formData;
-		}
-
 		/// <summary>
 		/// Process the web response.
 		/// </summary>
 		/// <param name="webRequest">The request object.</param>
 		/// <returns>The response data.</returns>
 		protected string WebResponseGet(HttpWebRequest webRequest) {
-			StreamReader responseReader = null;
-			string responseData = "";
-
+			string responseData;
 			try {
-				responseReader = new StreamReader(webRequest.GetResponse().GetResponseStream());
-				responseData = responseReader.ReadToEnd();
+				using (StreamReader reader = new StreamReader(webRequest.GetResponse().GetResponseStream(), true)) {
+					responseData = reader.ReadToEnd();
+				}
 			} catch (Exception e) {
 				throw e;
-			} finally {
-				webRequest.GetResponse().GetResponseStream().Close();
-				responseReader.Close();
-				responseReader = null;
 			}
 
 			return responseData;