C # component implementation of the TCP/IP Protocol Based on Message Communication completion port (source code)

Source code: Client: Using System; Using System. IO; Using System. ComponentModel; Using System. Collections; Using System. Diagnostics; Using System. Net; Using System. Net. Sockets; Using System. Threading; Namespace MyKJ { ? /// ? /// MyTcpIpClient provides message-based clients on the Net TCP_IP protocol. ? /// ? Public class MyTcpIpClient: System. ComponentModel. Component ? { ?? Private int bufferSize = 2048; ?? Private string tcpIpServerIP = "127.0.0.1 "; ?? Private int tcpIpServerPort = 11000; ?? Private Socket ClientSocket = null; ?? Private ManualResetEvent connectDone = new ManualResetEvent (false ); ?? Private ManualResetEvent sendDone = new ManualResetEvent (false ); ?? ?? Private void ConnectCallback (IAsyncResult ar) ?? { ??? Try ??? { ???? Socket client = (Socket) ar. AsyncState; ???? Client. EndConnect (ar ); ???? ???} ??? Catch (Exception e) ??? { ???? OnErrorEvent (new ErrorEventArgs (e )); ???} ??? Finally ??? { ???? ConnectDone. Set (); ???} ??} ?? Private void SendCallback (IAsyncResult ar) ?? { ??? Try ??? { ???? Socket client = (Socket) ar. AsyncState; ???? Int bytesSent = client. EndSend (ar ); ???? // Console. WriteLine (bytesSent ); ???} ??? Catch (Exception e) ??? { ???? OnErrorEvent (new ErrorEventArgs (e )); ???} ??? Finally ??? { ???? SendDone. Set (); ???} ??} ?? Private void effececallback (IAsyncResult ar) ?? { ??? Socket handler = null; ??? Try ??? { ???? Lock (ar) ???? { ????? StateObject state = (StateObject) ar. AsyncState; ????? Handler = state. workSocket; ????? ????? Int bytesRead = handler. EndReceive (ar ); ????? ????? If (bytesRead> 0) ????? { ?????? Int ReadPiont = 0 ;? ?????? While (ReadPiont ?????? {? ??????? If (state. Cortrol = 0 & ReadPiont ??????? { ???????? Long bi1 = state. buffer [ReadPiont]; ???????? Bi1 = (bi1 <24) & 0xff000000; ???????? State. packSize = bi1; ???????? ReadPiont ++; ???????? State. Cortrol = 1; ???????} ?????? ??????? If (state. Cortrol = 1 & ReadPiont ??????? { ???????? Long bi1 = state. buffer [ReadPiont]; ???????? Bi1 = (bi1 <16) & 0x00ff0000; ???????? State. packSize = state. packSize + bi1; ???????? ReadPiont ++; ???????? State. Cortrol = 2; ???????} ?????? ??????? If (state. Cortrol = 2 & ReadPiont ??????? { ???????? Long bi1 = state. buffer [ReadPiont]; ???????? Bi1 = (bi1 <8) & 0x0000ff00; ???????? State. packSize = state. packSize + bi1; ???????? ReadPiont ++; ???????? State. Cortrol = 3; ???????} ??????? ??????? If (state. Cortrol = 3 & ReadPiont ??????? { ???????? Long bi1 = state. buffer [ReadPiont]; ???????? Bi1 = bi1 & 0xff; ???????? State. packSize = state. packSize + bi1-4; ???????? ReadPiont ++; ???????? State. Cortrol = 4; ???????} ??????? ??????? If (state. Cortrol = 4 & ReadPiont ??????? { ???????? Long bi1 = state. buffer [ReadPiont]; ???????? Bi1 = (bi1 <24) & 0xff000000; ???????? State. residualSize = bi1; ???????? ReadPiont ++; ???????? State. Cortrol = 5; ???????? State. packSize-= 1; ???????} ??????? ??????? If (state. Cortrol = 5 & ReadPiont ??????? { ???????? Long bi1 = state. buffer [ReadPiont]; ???????? Bi1 = (bi1 <16) & 0x00ff0000; ???????? State. residualSize = state. residualSize + bi1; ???????? ReadPiont ++; ???????? State. Cortrol = 6; ???????? State. packSize-= 1; ???????} ??????? ??????? If (state. Cortrol = 6 & ReadPiont ??????? { ???????? Long bi1 = state. buffer [ReadPiont]; ???????? Bi1 = (bi1 <8) & 0x0000ff00; ???????? State. residualSize = state. residualSize + bi1; ???????? ReadPiont ++; ???????? State. Cortrol = 7; ???????? State. packSize-= 1; ???????} ??????? If (state. Cortrol = 7 & ReadPiont ??????? { ???????? Long bi1 = state. buffer [ReadPiont]; ???????? Bi1 = bi1 & 0xff; ???????? State. residualSize = state. residualSize + bi1; ???????? State. Datastream. SetLength (0 ); ???????? State. Datastream. Position = 0; ???????? ???????? ReadPiont ++; ???????? State. Cortrol = 8; ???????? State. packSize-= 1; ???????} ??????? ??????? If (state. Cortrol = 8 & ReadPiont ??????? { ???????? Int bi1 = bytesRead-ReadPiont; ???????? Int bi2 = (int) (state. residualSize-state.Datastream.Length ); ???????? If (bi1> = bi2) ???????? { ????????? State. Datastream. Write (state. buffer, ReadPiont, bi2 ); ????????? ReadPiont + = bi2; ????????? OnInceptEvent (new InceptEventArgs (state. Datastream, handler )); ????????? State. Cortrol = 9; ????????? State. packSize-= bi2; ?????????} ???????? Else ???????? { ????????? State. Datastream. Write (state. buffer, ReadPiont, bi1 ); ????????? ReadPiont + = bi1; ????????? State. packSize-= bi1; ????????} ???????} ??????? If (state. Cortrol = 9 & ReadPiont ??????? { ???????? Int bi1 = bytesRead-ReadPiont; ???????? If (bi1 ???????? { ????????? State. packSize = state. packSize-bi1; ????????? ReadPiont + = bi1; ????????}? ???????? Else ???????? { ????????? State. Cortrol = 0; ????????? ReadPiont + = (int) state. packSize; ????????} ???????} ??????} ?????} ????? Else ????? { ?????? Throw (new Exception ("the read data is smaller than 1bit ")); ?????} ????? If (handler. Connected = true) ????? { ?????? Handler. BeginReceive (state. buffer, 0, bufferSize, 0, ??????? New AsyncCallback (effececallback), state ); ?????} ????} ???} ??? Catch (Exception e) ??? { ???? OnErrorEvent (new ErrorEventArgs (e )); ???? ???} ??} ?? ?? /// ?? /// Connect to the server ?? /// ?? Public void Conn () ?? { ??? Try ??? { ???? ClientSocket = new Socket (AddressFamily. InterNetwork, SocketType. Stream, ProtocolType. Tcp );? ???? IPAddress ipAddress = IPAddress. Parse (tcpIpServerIP ); ???? IPEndPoint remoteEP = new IPEndPoint (ipAddress, tcpIpServerPort ); ???? ConnectDone. Reset (); ???? ClientSocket. BeginConnect (remoteEP, new AsyncCallback (ConnectCallback), ClientSocket ); ???? ConnectDone. WaitOne (); ???? StateObject state = new StateObject (bufferSize, ClientSocket ); ???? ClientSocket. BeginReceive (state. buffer, 0, bufferSize, 0, ????? New AsyncCallback (effececallback), state );? ???} ??? Catch (Exception e) ??? { ???? OnErrorEvent (new ErrorEventArgs (e )); ???} ??? ??} ?? /// ?? /// Disconnect ?? /// ?? Public void Close () ?? { ??? Try ??? { ???? ClientSocket. Shutdown (SocketShutdown. Both ); ???? ClientSocket. Close (); ???} ??? Catch (Exception e) ??? { ???? OnErrorEvent (new ErrorEventArgs (e )); ???} ??? ??} ?? /// ?? /// Send a stream of data ?? /// ?? /// Data stream ?? Public void Send (Stream Astream) ?? { ??? Try ??? { ???? If (ClientSocket. Connected = false) ???? { ????? Throw (new Exception ("messages cannot be sent if the server is not connected! ")); ????} ???? Astream. Position = 0; ???? Byte [] byteData = new byte [bufferSize]; ???? Int bi1 = (int) (Astream. Length + 8)/bufferSize ); ???? Int bi2 = (int) Astream. Length; ???? If (Astream. Length + 8) % bufferSize)> 0) ???? { ????? Bi1 = bi1 + 1; ????} ???? Bi1 = bi1 * bufferSize; ???? ???? ByteData [0] = System. Convert. ToByte (bi1> 24 ); ???? ByteData [1] = System. Convert. ToByte (bi1 & 0x00ff0000)> 16 ); ???? ByteData [2] = System. Convert. ToByte (bi1 & 0x0000ff00)> 8 ); ???? ByteData [3] = System. Convert.

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