private void ConnectCallback(IAsyncResult ar)
{
Socket connection = (Socket)ar.AsyncState;
this.connection = new Connection(connection);
/*io.AddMessageToWriteBuffer(this.connection, new Message(24, new byte[] { 1, 2, 3, 4,5,6 }));
* Send(new Message(24, new byte[] { 1, 2, 3, 4,5,6 }));*/
connected.Set();
log.add_to_log(log_vrste.info, "BeginReceive", "AsyncTCPClient.cs ConnectCallback()");
this.connection.socket.BeginReceive(this.connection.tmp_rbuffer, 0, Connection.RBUFFER_SIZE, SocketFlags.None, new AsyncCallback(ReadCallback), this.connection);
}
public List <Message> EndRead(Connection connection, int bytesRead, out IOStatus status)
{
status = IOStatus.NONE;
List <Message> readMessages = new List <Message>();
Socket socket = connection.socket;
byte[] messageData;
byte[] rbuffer = connection.GetRBuffer();
log.add_to_log(log_vrste.info, String.Format("Handler {0}: buffer={1}", connection.uid, ByteArrayToString(rbuffer)), "InputOutput.cs EndRead()");
log.add_to_log(log_vrste.info, String.Format("Handler {0}: read {1} bytes", connection.uid, bytesRead), "InputOutput.cs EndRead()");
log.add_to_log(log_vrste.info, String.Format("Handler {0}: read {1}", connection.uid, ByteArrayToString(new ArraySegment <byte>(connection.tmp_rbuffer, 0, bytesRead).ToArray())), "InputOutput.cs EndRead()");
if (bytesRead == 0)
{
throw new Exception("Client disconnected");
}
connection.WriteRBuffer(connection.tmp_rbuffer, 0, bytesRead);
rbuffer = connection.GetRBuffer();
int length = 0, left, start = 0;
byte opcode;
while (connection.position < rbuffer.Length)
{
left = (int)rbuffer.Length - connection.position;
log.add_to_log(log_vrste.info, String.Format("Handler {0}: left={1}", connection.uid, left), "InputOutput.cs EndRead()");
if (left >= 5)
{
length = BitConverter.ToInt32(rbuffer, connection.position);
connection.position += INT_SIZE;
opcode = rbuffer[connection.position];
connection.position += BYTE_SIZE;
if ((left - (FIVE_BYTES)) >= length)
{
start = FIVE_BYTES;
messageData = new ArraySegment <byte>(rbuffer, start, length).ToArray();
connection.position += length;
log.add_to_log(log_vrste.info, String.Format("Handler {0}: read message, opcode={1}, length={2}, data={3}", connection.uid, opcode, length, ByteArrayToString(messageData)), "InputOutput.cs EndRead()");
log.add_to_log(log_vrste.info, String.Format("Handler {0}: at position: {1}", connection.uid, connection.position), "InputOutput.cs EndRead()");
readMessages.Add(new Message(opcode, messageData));
if (rbuffer.Length > (length + start))
{
log.add_to_log(log_vrste.info, String.Format("Handler {0}: got parts of new message.", connection.uid), "InputOutput.cs EndRead()");
log.add_to_log(log_vrste.info, String.Format("Handler {0}: current buffer={1}", connection.uid, ByteArrayToString(rbuffer)), "InputOutput.cs EndRead()");
byte[] tmp = new ArraySegment <byte>(rbuffer, length + start, rbuffer.Length - (length + start)).ToArray();
connection.ResetRBuffer();
connection.WriteRBuffer(tmp, 0, tmp.Length);
rbuffer = connection.GetRBuffer();
connection.position = 0;
log.add_to_log(log_vrste.info, String.Format("Handler {0}: current buffer length is {1}", connection.uid, rbuffer.Length), "InputOutput.cs EndRead()");
}
else
{
log.add_to_log(log_vrste.info, String.Format("Handler {0}: reset buffer", connection.uid), "InputOutput.cs EndRead()");
connection.position = 0;
connection.ResetRBuffer();
break;
}
}
//nema podataka pa utrpaj ostatak u buffer
else
{
log.add_to_log(log_vrste.info, String.Format("Handler {0}: opcode={1}, length={2}. Whole message not yet received", connection.uid, opcode, length), "InputOutput.cs EndRead()");
log.add_to_log(log_vrste.info, String.Format("Handler {0}: at position: {1}", connection.uid, connection.position), "InputOutput.cs EndRead()");
log.add_to_log(log_vrste.info, String.Format("Handler {0}: message not complete", connection.uid), "InputOutput.cs EndRead()");
status = IOStatus.INCOMPLETE;
connection.position = 0;
break;
}
}
//nema headera, utrpaj ostatak u buffer
else
{
log.add_to_log(log_vrste.info, String.Format("Handler {0}: message not complete, put received back to buffer", connection.uid), "InputOutput.cs EndRead()");
break;
}
}
log.add_to_log(log_vrste.info, String.Format("Handler {0}: buffer: {1}", connection.uid, ByteArrayToString(rbuffer)), "InputOutput.cs EndRead()");
if (status == IOStatus.NONE)
{
status = IOStatus.COMPLETE;
}
connection.tmp_rbuffer = new byte[Connection.RBUFFER_SIZE];
return(readMessages);
}
