System.Net.HttpWebRequest.HttpWebRequest.CheckFinalStatus C# (CSharp) Method

		bool CheckFinalStatus (WebAsyncResult result)
		{
			if (result.GotException) {
				bodyBuffer = null;
				throw result.Exception;
			}

			Exception throwMe = result.Exception;

			HttpWebResponse resp = result.Response;
			WebExceptionStatus protoError = WebExceptionStatus.ProtocolError;
			HttpStatusCode code = 0;
			if (throwMe == null && webResponse != null) {
				code = webResponse.StatusCode;
				if (!authCompleted && ((code == HttpStatusCode.Unauthorized && credentials != null) ||
				     (ProxyQuery && code == HttpStatusCode.ProxyAuthenticationRequired))) {
					if (!usedPreAuth && CheckAuthorization (webResponse, code)) {
						// Keep the written body, so it can be rewritten in the retry
						if (InternalAllowBuffering) {
							// NTLM: This is to avoid sending data in the 'challenge' request
							// We save it in the first request (first 401), don't send anything
							// in the challenge request and send it in the response request along
							// with the buffers kept form the first request.
							if (ntlm_auth_state != NtlmAuthState.Response) {
								bodyBuffer = writeStream.WriteBuffer;
								bodyBufferLength = writeStream.WriteBufferLength;
							}
							return true;
						} else if (method != "PUT" && method != "POST") {
							bodyBuffer = null;
							return true;
						}
						
						writeStream.InternalClose ();
						writeStream = null;
						webResponse.Close ();
						webResponse = null;
						bodyBuffer = null;

						throw new WebException ("This request requires buffering " +
									"of data for authentication or " +
									"redirection to be sucessful.");
					}
				}

				bodyBuffer = null;
				if ((int) code >= 400) {
					string err = String.Format ("The remote server returned an error: ({0}) {1}.",
								    (int) code, webResponse.StatusDescription);
					throwMe = new WebException (err, null, protoError, webResponse);
					webResponse.ReadAll ();
				} else if ((int) code == 304 && allowAutoRedirect) {
					string err = String.Format ("The remote server returned an error: ({0}) {1}.",
								    (int) code, webResponse.StatusDescription);
					throwMe = new WebException (err, null, protoError, webResponse);
				} else if ((int) code >= 300 && allowAutoRedirect && redirects >= maxAutoRedirect) {
					throwMe = new WebException ("Max. redirections exceeded.", null,
								    protoError, webResponse);
					webResponse.ReadAll ();
				}
			}

			bodyBuffer = null;
			if (throwMe == null) {
				bool b = false;
				int c = (int) code;
				if (allowAutoRedirect && c >= 300) {
					if (InternalAllowBuffering && writeStream.WriteBufferLength > 0) {
						bodyBuffer = writeStream.WriteBuffer;
						bodyBufferLength = writeStream.WriteBufferLength;
					}
					b = Redirect (result, code);
				}

				if (resp != null && c >= 300 && c != 304)
					resp.ReadAll ();

				return b;
			}

			if (writeStream != null) {
				writeStream.InternalClose ();
				writeStream = null;
			}

			webResponse = null;

			throw throwMe;
		}
	}