c#中异步基于消息通信的完成端口的TCP/IP协议的组件实现(源代码) 客户端

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
...{
    /**//// <summary>
    /// MyTcpIpClient 提供在Net TCP_IP 协议上基于消息的客户端 
    /// </summary>
    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 ReceiveCallback(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<bytesRead)
                        ...{    
                            if(state.Cortrol==0 && ReadPiont<bytesRead)
                            ...{
                                long bi1=state.buffer[ReadPiont];
                                bi1=(bi1<<24)&0xff000000;
                                state.packSize=bi1;
                                ReadPiont++;
                                state.Cortrol=1;
                            }
                        
                            if(state.Cortrol==1 && ReadPiont<bytesRead)
                            ...{
                                long bi1=state.buffer[ReadPiont];
                                bi1=(bi1<<16)&0x00ff0000;
                                state.packSize=state.packSize+bi1;
                                ReadPiont++;
                                state.Cortrol=2;
                            }
                        
                            if(state.Cortrol==2 && ReadPiont<bytesRead)
                            ...{
                                long bi1=state.buffer[ReadPiont];
                                bi1=(bi1<<8)&0x0000ff00;
                                state.packSize=state.packSize+bi1;
                                ReadPiont++;
                                state.Cortrol=3;
                            }
                            
                            if(state.Cortrol==3 && ReadPiont<bytesRead)
                            ...{
                                long bi1=state.buffer[ReadPiont];
                                bi1=bi1&0xff;
                                state.packSize=state.packSize+bi1-4;
                                ReadPiont++;
                                state.Cortrol=4;
                            }
                            
                            if(state.Cortrol==4 && ReadPiont<bytesRead)
                            ...{
                                long bi1=state.buffer[ReadPiont];
                                bi1=(bi1<<24)&0xff000000;
                                state.residualSize=bi1;
                                ReadPiont++;
                                state.Cortrol=5;
                                state.packSize-=1;
                            }
                            
                            if(state.Cortrol==5 && ReadPiont<bytesRead)
                            ...{
                                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<bytesRead)
                            ...{
                                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<bytesRead)
                            ...{
                                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<bytesRead)
                            ...{
                                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<bytesRead)
                            ...{
                                int bi1=bytesRead-ReadPiont;
                                if(bi1<state.packSize)
                                ...{
                                    state.packSize=state.packSize-bi1;
                                    ReadPiont+=bi1;
                                }    
                                else
                                ...{
                                    state.Cortrol=0;
                                    ReadPiont+=(int)state.packSize;
                                }
                            }
                        }
                    }
                    else
                    ...{
                        throw(new Exception("读入的数据小于1bit"));
                    }
                    if(handler.Connected==true)
                    ...{
                        handler.BeginReceive(state.buffer,0,bufferSize,0,
                            new AsyncCallback(ReceiveCallback), state);
                    }
                }
            }
            catch (Exception e) 
            ...{
                OnErrorEvent(new ErrorEventArgs(e));
                
            }
        }
        
        /**//// <summary>
        /// 连接服务器
        /// </summary>
        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(ReceiveCallback), state);    
            }
            catch(Exception e)
            ...{
                OnErrorEvent(new ErrorEventArgs(e));
            }
            
        }
        /**//// <summary>
        /// 断开连接
        /// </summary>
        public void Close()
        ...{
            try
            ...{
                if(ClientSocket.Connected==true)
                ...{
                    ClientSocket.Shutdown(SocketShutdown.Both);
                    ClientSocket.Close();
                }
            }
            catch(Exception e)
            ...{
                OnErrorEvent(new ErrorEventArgs(e));
            }
            
        }
        /**//// <summary>
        /// 发送一个流数据
        /// </summary>
        /// <param name="Astream">数据流</param>
        public void Send(Stream Astream)
        ...{
            try 
            ...{
                if(ClientSocket.Connected==false)
                ...{
                    throw(new Exception("没有连接服务器不可以发送信息!"));
                }
                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.ToByte((bi1&0x000000ff));
                
                byteData[4]=System.Convert.ToByte(bi2>>24);
                byteData[5]=System.Convert.ToByte((bi2&0x00ff0000)>>16);
                byteData[6]=System.Convert.ToByte((bi2&0x0000ff00)>>8);
                byteData[7]=System.Convert.ToByte((bi2&0x000000ff));
                
                int n = Astream.Read(byteData, 8, byteData.Length-8);
                
                while (n>0) 
                ...{
                    ClientSocket.BeginSend(byteData, 0, byteData.Length, 0,    new AsyncCallback(SendCallback), ClientSocket);
                    sendDone.WaitOne();
                    byteData=new byte[bufferSize];
                    n = Astream.Read(byteData,0,byteData.Length);
                }
            } 
            catch (Exception e) 
            ...{
                OnErrorEvent(new ErrorEventArgs(e));
            }
        }
        
        /**//// <summary>
        /// 构造
        /// </summary>
        /// <param name="container">父控件</param>
        public MyTcpIpClient(System.ComponentModel.IContainer container)
        ...{
            container.Add(this);
            InitializeComponent();

            //
            // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
            //
        }
        /**//// <summary>
        /// 构造
        /// </summary>
        public MyTcpIpClient()
        ...{
            InitializeComponent();

            //
            // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
            //
        }

        Component Designer generated code#region Component Designer generated code
        /**//// <summary>
        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
        /// 此方法的内容。
        /// </summary>
        private void InitializeComponent()
        ...{

        }
        #endregion

        /**//// <summary>
        /// 要连接的服务器IP地址
        /// </summary>
        public string TcpIpServerIP
        ...{
            get
            ...{
                return tcpIpServerIP;
            }
            set
            ...{
                tcpIpServerIP=value;
            }
        }

        /**//// <summary>
        /// 要连接的服务器所使用的端口
        /// </summary>
        public int TcpIpServerPort
        ...{
            get
            ...{
                return tcpIpServerPort;
            }
            set
            ...{
                tcpIpServerPort=value;
            }
        }

        /**//// <summary>
        /// 缓冲器大小
        /// </summary>
        public int BufferSize
        ...{
            get
            ...{
                return bufferSize;
            }
            set
            ...{
                bufferSize=value;
            }
        }
        
        /**//// <summary>
        /// 连接的活动状态
        /// </summary>
        public bool Activ
        ...{
            get
            ...{
                if(ClientSocket==null)
                ...{
                    return false;
                }
                return ClientSocket.Connected;
            }
        }
        /**//// <summary>
        /// 接收到数据引发的事件
        /// </summary>
        public event InceptEvent Incept;
        /**//// <summary>
        /// 引发接收数据事件
        /// </summary>
        /// <param name="e">接收数据</param>
        protected virtual void OnInceptEvent(InceptEventArgs e)
        ...{
            if (Incept != null) 
            ...{
                Incept(this, e);
            }
        }
        /**//// <summary>
        /// 发生错误引发的事件
        /// </summary>
        public event ErrorEvent Error;
        /**//// <summary>
        /// 引发错误事件
        /// </summary>
        /// <param name="e">错误数据</param>
        protected virtual void OnErrorEvent(ErrorEventArgs e)
        ...{
            if (Error != null) 
            ...{
                Error(this, e); 
            }
        }
        
    }
    
    /**//// <summary>
    /// 接收数据事件
    /// </summary>
    public class InceptEventArgs : EventArgs 
    ...{  
        private readonly Stream datastream;
        private readonly Socket clientSocket;
        /**//// <summary>
        /// 构造
        /// </summary>
        /// <param name="Astream">接收到的数据</param>
        /// <param name="ClientSocket">接收的插座</param>
        public InceptEventArgs(Stream Astream,Socket ClientSocket) 
        ...{
            datastream=Astream;
            clientSocket=ClientSocket;
        }
        /**//// <summary>
        /// 接受的数据流
        /// </summary>
        public Stream Astream
        ...{     
            get ...{ return datastream;}      
        }
        /**//// <summary>
        /// 接收的插座
        /// </summary>
        public Socket ClientSocket
        ...{     
            get ...{ return clientSocket;}      
        }
    }  
    /**//// <summary>
    /// 定义接收委托
    /// </summary>
    public delegate void InceptEvent(object sender, InceptEventArgs e);
    /**//// <summary>
    /// 错处事件
    /// </summary>
    public class ErrorEventArgs : EventArgs 
    ...{  
        private readonly Exception error;
        /**//// <summary>
        /// 构造
        /// </summary>
        /// <param name="Error">错误信息对象</param>
        public ErrorEventArgs(Exception Error) 
        ...{
            error=Error;
        }
        /**//// <summary>
        /// 错误信息对象
        /// </summary>
        public Exception Error
        ...{     
            get ...{ return error;}      
        }
    }
    /**//// <summary>
    /// 错误委托
    /// </summary>
    public delegate void ErrorEvent(object sender, ErrorEventArgs e);
    
    
    
}

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