/// <summary>
/// This MUST be an asynchronous call
/// </summary>
private void SendTrackerGet()
{
PrepareTrackerRequest();
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(trackerGetRequest);
requestState = new RequestState();
// To store the request
requestState.request = request;
try {
// Start the Async request
IAsyncResult result = request.BeginGetResponse(new AsyncCallback(EndGetTrackerResponse), requestState);
// We need a TimeOut
ThreadPool.RegisterWaitForSingleObject(result.AsyncWaitHandle, new WaitOrTimerCallback(TrackerGetTimeOut), requestState, requestTimeOut, true);
// Signal the manual event to wait.
allDone.WaitOne();
requestState.response.Close();
trackerResponse = null;
trackerFailure = false;
trackerFailureReason = string.Empty;
}
catch(WebException we) {
throw new TrackerException("Error in GET to tracker. [" + we.Message + "].", we);
}
}
private void EndGetTrackerResponse(IAsyncResult result)
{
requestState = (RequestState) result.AsyncState;
try {
WebRequest webRequest = requestState.request;
requestState.response = webRequest.EndGetResponse(result);
// Get the response
requestState.streamResponse = requestState.response.GetResponseStream();
Encoding encode = System.Text.Encoding.GetEncoding("utf-8");
StreamReader sr = new StreamReader(requestState.streamResponse, encode);
// Tracker response must have less than 256 bytes.
char[] bufferRead = new char[512];
int responseLength = sr.Read(bufferRead, 0, 512);
trackerResponse = new byte[responseLength];
for (int i = 0; i < responseLength; i++) {
trackerResponse[i] = (byte)bufferRead[i];
}
ProcessTrackerResponse();
}
catch (WebException we) {
throw new TrackerException("Error getting response from tracker. [" + we.Message + "].", we);
}
allDone.Set();
}
