/// <summary>
/// Reads possible new log file entries form the file that is observed.
/// </summary>
private void ReadNewLogMessagesFromFile()
{
if (mFileReader == null || Equals(mFileReader.BaseStream.Length, mLastFileOffset))
{
return;
}
mFileReader.BaseStream.Seek(
mLastFileOffset
, SeekOrigin.Begin);
string line;
string dataToParse = string.Empty;
List<LogMessage> messages = new List<LogMessage>();
while ((line = mFileReader.ReadLine()) != null)
{
dataToParse += line;
int log4NetEndTag = dataToParse.IndexOf(
LOG4NET_LOGMSG_END
, StringComparison.Ordinal);
if (log4NetEndTag > 0)
{
LogMessage newLogMsg;
try
{
newLogMsg = new LogMessageLog4Net(
dataToParse
, ++mLogNumber);
}
catch (Exception ex)
{
Logger.Warn(ex.Message);
continue;
}
messages.Add(newLogMsg);
dataToParse = dataToParse.Substring(
log4NetEndTag
, dataToParse.Length - (log4NetEndTag + LOG4NET_LOGMSG_END.Length));
}
}
mLastFileOffset = mFileReader.BaseStream.Position;
if (mLogHandler != null)
{
mLogHandler.HandleMessage(messages.ToArray());
}
}
/// <summary>
/// Listen for incomming <see cref="LogMessage"/>s.
/// </summary>
/// <param name="newSocket">the <see cref="Socket"/> object that may received new data.</param>
private void Listening(object newSocket)
{
try
{
using (Socket socket = (Socket)newSocket)
{
using (NetworkStream ns = new NetworkStream(socket, FileAccess.Read, false))
{
while (mSocket != null)
{
try
{
byte[] receivedBytes = new byte[1024];
StringBuilder receivedMessage = new StringBuilder();
do
{
int receivedByteCount = ns.Read(
receivedBytes
, 0
, receivedBytes.Length);
receivedMessage.Append(Encoding.ASCII.GetString(
receivedBytes
, 0
, receivedByteCount));
}
while(ns.DataAvailable);
LogMessage newLogMsg = new LogMessageLog4Net(
receivedMessage.ToString()
, ++mLogNumber);
if (mLogHandler != null)
{
mLogHandler.HandleMessage(newLogMsg);
}
}
catch (Exception ex)
{
Logger.Warn(ex.Message);
}
}
}
}
}
catch (Exception ex)
{
Logger.Warn(ex.Message);
}
}
/// <summary>
/// Handles the received UDP message event.
/// </summary>
/// <param name="ar">The <see cref="IAsyncResult"/> object that contains necessary meta data.</param>
private void ReceiveUdpMessage(IAsyncResult ar)
{
UdpClient client = ((UdpState)ar.AsyncState).Client;
IPEndPoint wantedIpEndPoint = ((UdpState)(ar.AsyncState)).EndPoint;
IPEndPoint receivedIpEndPoint = new IPEndPoint(IPAddress.Any, 0);
Byte[] receiveBytes;
try
{
receiveBytes = client.EndReceive(
ar
, ref receivedIpEndPoint);
}
catch (ObjectDisposedException)
{
// The socket seems to be already closed.
return;
}
bool isRightHost = (wantedIpEndPoint.Address.Equals(receivedIpEndPoint.Address))
|| wantedIpEndPoint.Address.Equals(IPAddress.Any);
if (isRightHost && receiveBytes != null)
{
try
{
LogMessage newLogMsg = new LogMessageLog4Net(
Encoding.ASCII.GetString(receiveBytes)
, ++mLogNumber);
if (mLogHandler != null)
{
mLogHandler.HandleMessage(newLogMsg);
}
}
catch (Exception ex)
{
Logger.Warn(ex.Message);
}
}
client.BeginReceive(ReceiveUdpMessage, ar.AsyncState);
}
