/// <summary>
/// Runs the server in its own Thread.
/// </summary>
private void ThreadMain()
{
Exception workException = null;
try
{
Debug.Print("Accepted Socket, workerid: " + this.WorkerID.ToString());
_SocketAcceptedHandler(this);
if (_ConnectionSocket.Poll(-1, SelectMode.SelectRead))
{
// Create buffer and receive raw bytes.
byte[] firstLanPacket = new byte[_LanPacketByteCount];
int count = 0;
SocketFlags socketFlags = new SocketFlags();
count = _ConnectionSocket.Receive(firstLanPacket, count, _ConnectionSocket.Available - count, socketFlags);
if (firstLanPacket[0] == 0)
{
Debug.Print("empty request, count: " + count.ToString());
workException = new Exception("Empty Packet found" + this.WorkerID.ToString());// exception not thrown just sent back
}
else
{
string rawHeader = new string(Encoding.UTF8.GetChars(firstLanPacket));
Hashtable headerFields = null;
int contentStart = -1;
EnumRequestType requestType = EnumRequestType.Get;// check for get first
BaseRequest.LoadHeader(firstLanPacket, count, out contentStart, out headerFields, out requestType);
BaseRequest request = null;
try
{
if (requestType == EnumRequestType.Get)
{
request = new BaseRequest(firstLanPacket, count, 0, headerFields, requestType);// no content
}
else
{
if (requestType == EnumRequestType.Post)
{
request = new PostRequest(firstLanPacket, count, 0, headerFields, requestType, _ConnectionSocket, GetMoreBytes);// todo put delegate
}
else
{
throw new NotImplementedException("Http PUT is not implemented.");
}
}
}
catch (Exception ex)
{
//return server 500;
workException = ex;
SendErrorResponse(_ConnectionSocket, SupportedErrors.ServerError, request, ex, this.WorkerID);
request = null;
}
// ConsoleWrite.CollectMemoryAndPrint(true, this.WorkerID);
//requestQueue.Enqueue(request);todo
if (request != null)
{
string requestMimeType = GetMimeType(request.Uri);
Debug.Print("Request MIME Type: " + requestMimeType);
if (requestMimeType.Length > 0)
{ // file request
try
{
string fullFilePath = SDCard.GetFullPathFromUri(request.BaseUri);
Debug.Print("File Request received:" + fullFilePath);
// send start
long fileSize = SDCard.GetFileSize(fullFilePath);
if (fileSize > 0)
{
int maxAge = GetMaxAgeFromMimeType(requestMimeType);
string header = HttpGeneral.GetHttpHeader(fileSize, requestMimeType, maxAge);
byte[] returnBytes = Encoding.UTF8.GetBytes(header);
_ConnectionSocket.Send(returnBytes, returnBytes.Length, SocketFlags.None);
SDCard.ReadInChunks(fullFilePath, _ConnectionSocket);// boolean result doesnt really do much so ignore.
}
else
{
SendErrorResponse(_ConnectionSocket, SupportedErrors.FileNotFound, request, null, this.WorkerID);
}
}
catch (Exception ex)
{
//return server 500;
workException = ex;
SendErrorResponse(_ConnectionSocket, SupportedErrors.ServerError, request, ex, this.WorkerID);
}
}
else
{// page request
if (_ResponseHandler != null)
{
try
{
string response = _ResponseHandler(request);
byte[] returnBytes = Encoding.UTF8.GetBytes(response);
_ConnectionSocket.Send(returnBytes, 0, returnBytes.Length, SocketFlags.None);
}
catch (Exception ex)
{
//return server 500;
workException = ex;
SendErrorResponse(_ConnectionSocket, SupportedErrors.ServerError, request, ex, this.WorkerID);
}
}
}
}
}
}
}// using statement can throw in the dispose.
catch (Exception ex)
{
workException = ex;
Debug.Print("Exception, workerid: " + this.WorkerID.ToString() + ", ex: " + ex.Message);
}
finally
{
if (_ConnectionSocket != null)
{
((IDisposable)_ConnectionSocket).Dispose();
}
_WorkFinishedHandler(workException, this);
}
}
private void SendErrorResponse(Socket connectionSocket, SupportedErrors errorType, BaseRequest request, Exception ex, int workerID)
{
string errorTypeText = "";
if (errorType == SupportedErrors.ServerError)
{
errorTypeText = "500 Server Error";
Debug.Print("SendErrorResponse, workerid: " + workerID.ToString() + ", ex: " + ex.Message + " " + errorTypeText);
}
else
{
errorTypeText = "404 File not found";
Debug.Print("SendErrorResponse, workerid: " + workerID.ToString() + " " + errorTypeText);
}
string header = "";
string content = HtmlGeneral.HtmlStart + "<h1>" + errorTypeText + "</h1>" + "<h3>Uri: " + request.Uri + "</h3>";
if (ex != null)
{
content += "<p>Error: " + ex.Message + "</p>";
}
content += HtmlGeneral.HtmlEnd;
if (errorType == SupportedErrors.ServerError)
{
header = HttpGeneral.Get500Header(content.Length);
}
else
{
header = HttpGeneral.Get404Header(content.Length);
}
byte[] returnBytes = Encoding.UTF8.GetBytes(header + content);
connectionSocket.Send(returnBytes, 0, returnBytes.Length, SocketFlags.None);
}
