• C#对Socket操作的封装


    using System;
    using System.Net ;
    using System.Net.Sockets ;
    using System.IO ;
    using LogDll;

    namespace NetDll
    {
        
    /**//// <summary>
        
    /// Net : 提供静态方法,对常用的网络操作进行封装
        
    /// </summary>

        public sealed class Net
        
    {
           
    private Net(){
          }


           
    /**//// <summary>
           
    /// 连接使用 tcp 协议的服务端
           
    /// </summary>
           
    /// <param name="ip">服务端的ip地址</param>
           
    /// <param name="port">服务端的端口号</param>
           
    /// <returns></returns>

          public static Socket ConnectServer( string ip ,int port ) {
                Socket s 
    = null;
                
                
    try {
                    IPAddress ipAddress 
    = IPAddress.Parse ( ip );
                    IPEndPoint ipEndPoint 
    = new IPEndPoint ( ipAddress,port );
                    s 
    = new Socket ( ipEndPoint.AddressFamily ,SocketType.Stream ,ProtocolType.Tcp );
                    s.Connect ( ipEndPoint );
                    
    if ( s.Connected== false ) {
                        s 
    = null;
                    }

                }

                
    catch ( Exception e ) {
                    Log.WriteLog ( e );
                }

                
    return s;
            }


            
    /**//// <summary>
            
    /// 用主机名称连接使用Tcp协议的服务端
            
    /// </summary>
            
    /// <param name="hostName">在hosts 文件中存在的主机名称</param>
            
    /// <param name="port">服务端的端口号</param>
            
    /// <returns></returns>

            public static Socket ConnectServByHostName( string hostName,int port ){
                Socket s 
    = null;
                IPHostEntry iphe 
    = null;

                
    try {
                    iphe 
    = Dns.Resolve ( hostName );            
                    
    foreach ( IPAddress ipad in iphe.AddressList ) {
                        IPEndPoint ipe 
    = new IPEndPoint (ipad,port);
                        Socket tmps 
    = new Socket (ipe.AddressFamily ,SocketType.Stream ,ProtocolType.Tcp );
                        tmps.Connect ( ipe );

                        
    if ( tmps.Connected ) {
                            s 
    = tmps;
                            
    break;
                        }

                        
    else
                            
    continue;
                    }
                    
                }

                
    catch ( Exception e ) {
                    Log.WriteLog ( e );
                }

                
    return s;
            }


            
    /**//// <summary>
            
    /// 向远程主机发送数据
            
    /// </summary>
            
    /// <param name="socket">要发送数据且已经连接到远程主机的 Socket</param>
            
    /// <param name="buffer">待发送的数据</param>
            
    /// <param name="outTime">发送数据的超时时间,以秒为单位,可以精确到微秒</param>
            
    /// <returns>0:发送数据成功;-1:超时;-2:发送数据出现错误;-3:发送数据时出现异常</returns>
            
    /// <remarks >
            
    /// 当 outTime 指定为-1时,将一直等待直到有数据需要发送
            
    /// </remarks>

            public static int SendData ( Socket socket,byte[] buffer,int outTime ) {
                
    if ( socket == null ||socket.Connected == false ) {
                    
    throw new ArgumentException ("参数socket 为null,或者未连接到远程计算机");
                }

                
    if ( buffer == null || buffer.Length == 0 ) {
                    
    throw new ArgumentException ("参数buffer 为null ,或者长度为 0");
                }


                
    int flag = 0;
                
    try {
                    
    int left = buffer.Length ;
                    
    int sndLen  = 0;

                    
    while ( true ) {
                        
    if ( ( socket.Poll (outTime*1000000,SelectMode.SelectWrite ) == true ) ) {        // 收集了足够多的传出数据后开始发送
                            sndLen = socket.Send (buffer,sndLen ,left ,SocketFlags.None );
                            left 
    -= sndLen ;
                            
    if ( left == 0 ) {                                        // 数据已经全部发送
                              flag = 0;
                              
    break;
                          }

                          
    else {
                               
    if ( sndLen > 0 ) {                                    // 数据部分已经被发送
                                    continue;
                                }

                                
    else {                                                // 发送数据发生错误
                                    flag = -2;
                                    
    break;
                                }

                            }
                            
                        }

                        
    else {                                                        // 超时退出
                           flag = -1;
                            
    break;
                        }

                    }

                }

                
    catch ( SocketException e ) {
                    Log.WriteLog ( e );
                    flag 
    = -3;
                }

                
    return flag;
            }



            
    /**//// <summary>
            
    /// 向远程主机发送数据
            
    /// </summary>
            
    /// <param name="socket">要发送数据且已经连接到远程主机的 Socket</param>
            
    /// <param name="buffer">待发送的字符串</param>
            
    /// <param name="outTime">发送数据的超时时间,以秒为单位,可以精确到微秒</param>
            
    /// <returns>0:发送数据成功;-1:超时;-2:发送数据出现错误;-3:发送数据时出现异常</returns>
            
    /// <remarks >
            
    /// 当 outTime 指定为-1时,将一直等待直到有数据需要发送
            
    /// </remarks>

            public static int SendData ( Socket socket,string buffer,int outTime ) {
                
    if ( buffer == null || buffer.Length == 0 ) {
                    
    throw new ArgumentException ("待发送的字符串长度不能为零.");
                }

                
    return  ( SendData ( socket,System.Text .Encoding .Default .GetBytes ( buffer ),outTime) );
            }



            
    /**//// <summary>
            
    /// 接收远程主机发送的数据
            
    /// </summary>
            
    /// <param name="socket">要接收数据且已经连接到远程主机的 socket</param>
            
    /// <param name="buffer">接收数据的缓冲区</param>
            
    /// <param name="outTime">接收数据的超时时间,以秒为单位,可以精确到微秒</param>
           
    /// <returns>0:接收数据成功;-1:超时;-2:接收数据出现错误;-3:接收数据时出现异常</returns>
           
    /// <remarks >
           
    /// 1、当 outTime 指定为-1时,将一直等待直到有数据需要接收;
           
    /// 2、需要接收的数据的长度,由 buffer 的长度决定。
           
    /// </remarks>

           public static int RecvData ( Socket socket,byte[] buffer ,int outTime ) {
               
    if ( socket == null || socket.Connected == false ) {
                   
    throw new ArgumentException ("参数socket 为null,或者未连接到远程计算机");
                }

                
    if ( buffer == null || buffer.Length == 0 ) {
                    
    throw new ArgumentException ("参数buffer 为null ,或者长度为 0");
                }

                buffer.Initialize ();
                
    int left = buffer.Length ;
                
    int curRcv = 0;
                
    int flag = 0;

                
    try {
                    
    while ( true ) {
                        
    if ( socket.Poll (outTime*1000000,SelectMode.SelectRead ) == true ) {        // 已经有数据等待接收
                            curRcv = socket.Receive (buffer,curRcv,left ,SocketFlags.None );
                           left 
    -= curRcv;
                           
    if ( left == 0 ) {                                    // 数据已经全部接收 
                                flag = 0;
                                
    break;
                            }

                            
    else {
                                
    if ( curRcv > 0 ) {                                // 数据已经部分接收
                                    continue;
                                }

                                
    else {                                            // 出现错误
                                    flag = -2;
                                    
    break;
                                }

                            }

                        }

                        
    else {                                                    // 超时退出
                            flag = -1;
                            
    break;
                        }

                    }

                }

                
    catch ( SocketException e ) {
                    Log.WriteLog ( e );
                    flag 
    = -3;
                }

                
    return flag;
            }


            
    /**//// <summary>
            
    /// 接收远程主机发送的数据
            
    /// </summary>
            
    /// <param name="socket">要接收数据且已经连接到远程主机的 socket</param>
            
    /// <param name="buffer">存储接收到的数据的字符串</param>
            
    /// <param name="bufferLen">待接收的数据的长度</param>
            
    /// <param name="outTime">接收数据的超时时间,以秒为单位,可以精确到微秒</param>
            
    /// <returns>0:接收数据成功;-1:超时;-2:接收数据出现错误;-3:接收数据时出现异常</returns>
            
    /// <remarks >
            
    /// 当 outTime 指定为-1时,将一直等待直到有数据需要接收;
            
    /// </remarks>

            public static int RecvData ( Socket socket,string buffer ,int bufferLen,int outTime ) {
                
    if ( bufferLen <= 0 ) {
                    
    throw new ArgumentException ("存储待接收数据的缓冲区长度必须大于0");
                }
    using System;
    using System.Net ;
    using System.Net.Sockets ;
    using System.IO ;
    using LogDll;

    namespace NetDll
    {
        
    /**//// <summary>
        
    /// Net : 提供静态方法,对常用的网络操作进行封装
        
    /// </summary>

        public sealed class Net
        
    {
           
    private Net(){
          }


           
    /**//// <summary>
           
    /// 连接使用 tcp 协议的服务端
           
    /// </summary>
           
    /// <param name="ip">服务端的ip地址</param>
           
    /// <param name="port">服务端的端口号</param>
           
    /// <returns></returns>

          public static Socket ConnectServer( string ip ,int port ) {
                Socket s 
    = null;
                
                
    try {
                    IPAddress ipAddress 
    = IPAddress.Parse ( ip );
                    IPEndPoint ipEndPoint 
    = new IPEndPoint ( ipAddress,port );
                    s 
    = new Socket ( ipEndPoint.AddressFamily ,SocketType.Stream ,ProtocolType.Tcp );
                    s.Connect ( ipEndPoint );
                    
    if ( s.Connected== false ) {
                        s 
    = null;
                    }

                }

                
    catch ( Exception e ) {
                    Log.WriteLog ( e );
                }

                
    return s;
            }


            
    /**//// <summary>
            
    /// 用主机名称连接使用Tcp协议的服务端
            
    /// </summary>
            
    /// <param name="hostName">在hosts 文件中存在的主机名称</param>
            
    /// <param name="port">服务端的端口号</param>
            
    /// <returns></returns>

            public static Socket ConnectServByHostName( string hostName,int port ){
                Socket s 
    = null;
                IPHostEntry iphe 
    = null;

                
    try {
                    iphe 
    = Dns.Resolve ( hostName );            
                    
    foreach ( IPAddress ipad in iphe.AddressList ) {
                        IPEndPoint ipe 
    = new IPEndPoint (ipad,port);
                        Socket tmps 
    = new Socket (ipe.AddressFamily ,SocketType.Stream ,ProtocolType.Tcp );
                        tmps.Connect ( ipe );

                        
    if ( tmps.Connected ) {
                            s 
    = tmps;
                            
    break;
                        }

                        
    else
                            
    continue;
                    }
                    
                }

                
    catch ( Exception e ) {
                    Log.WriteLog ( e );
                }

                
    return s;
            }


            
    /**//// <summary>
            
    /// 向远程主机发送数据
            
    /// </summary>
            
    /// <param name="socket">要发送数据且已经连接到远程主机的 Socket</param>
            
    /// <param name="buffer">待发送的数据</param>
            
    /// <param name="outTime">发送数据的超时时间,以秒为单位,可以精确到微秒</param>
            
    /// <returns>0:发送数据成功;-1:超时;-2:发送数据出现错误;-3:发送数据时出现异常</returns>
            
    /// <remarks >
            
    /// 当 outTime 指定为-1时,将一直等待直到有数据需要发送
            
    /// </remarks>

            public static int SendData ( Socket socket,byte[] buffer,int outTime ) {
                
    if ( socket == null ||socket.Connected == false ) {
                    
    throw new ArgumentException ("参数socket 为null,或者未连接到远程计算机");
                }

                
    if ( buffer == null || buffer.Length == 0 ) {
                    
    throw new ArgumentException ("参数buffer 为null ,或者长度为 0");
                }


                
    int flag = 0;
                
    try {
                    
    int left = buffer.Length ;
                    
    int sndLen  = 0;

                    
    while ( true ) {
                        
    if ( ( socket.Poll (outTime*1000000,SelectMode.SelectWrite ) == true ) ) {        // 收集了足够多的传出数据后开始发送
                            sndLen = socket.Send (buffer,sndLen ,left ,SocketFlags.None );
                            left 
    -= sndLen ;
                            
    if ( left == 0 ) {                                        // 数据已经全部发送
                              flag = 0;
                              
    break;
                          }

                          
    else {
                               
    if ( sndLen > 0 ) {                                    // 数据部分已经被发送
                                    continue;
                                }

                                
    else {                                                // 发送数据发生错误
                                    flag = -2;
                                    
    break;
                                }

                            }
                            
                        }

                        
    else {                                                        // 超时退出
                           flag = -1;
                            
    break;
                        }

                    }

                }

                
    catch ( SocketException e ) {
                    Log.WriteLog ( e );
                    flag 
    = -3;
                }

                
    return flag;
            }



            
    /**//// <summary>
            
    /// 向远程主机发送数据
            
    /// </summary>
            
    /// <param name="socket">要发送数据且已经连接到远程主机的 Socket</param>
            
    /// <param name="buffer">待发送的字符串</param>
            
    /// <param name="outTime">发送数据的超时时间,以秒为单位,可以精确到微秒</param>
            
    /// <returns>0:发送数据成功;-1:超时;-2:发送数据出现错误;-3:发送数据时出现异常</returns>
            
    /// <remarks >
            
    /// 当 outTime 指定为-1时,将一直等待直到有数据需要发送
            
    /// </remarks>

            public static int SendData ( Socket socket,string buffer,int outTime ) {
                
    if ( buffer == null || buffer.Length == 0 ) {
                    
    throw new ArgumentException ("待发送的字符串长度不能为零.");
                }

                
    return  ( SendData ( socket,System.Text .Encoding .Default .GetBytes ( buffer ),outTime) );
            }



            
    /**//// <summary>
            
    /// 接收远程主机发送的数据
            
    /// </summary>
            
    /// <param name="socket">要接收数据且已经连接到远程主机的 socket</param>
            
    /// <param name="buffer">接收数据的缓冲区</param>
            
    /// <param name="outTime">接收数据的超时时间,以秒为单位,可以精确到微秒</param>
           
    /// <returns>0:接收数据成功;-1:超时;-2:接收数据出现错误;-3:接收数据时出现异常</returns>
           
    /// <remarks >
           
    /// 1、当 outTime 指定为-1时,将一直等待直到有数据需要接收;
           
    /// 2、需要接收的数据的长度,由 buffer 的长度决定。
           
    /// </remarks>

           public static int RecvData ( Socket socket,byte[] buffer ,int outTime ) {
               
    if ( socket == null || socket.Connected == false ) {
                   
    throw new ArgumentException ("参数socket 为null,或者未连接到远程计算机");
                }

                
    if ( buffer == null || buffer.Length == 0 ) {
                    
    throw new ArgumentException ("参数buffer 为null ,或者长度为 0");
                }

                buffer.Initialize ();
                
    int left = buffer.Length ;
                
    int curRcv = 0;
                
    int flag = 0;

                
    try {
                    
    while ( true ) {
                        
    if ( socket.Poll (outTime*1000000,SelectMode.SelectRead ) == true ) {        // 已经有数据等待接收
                            curRcv = socket.Receive (buffer,curRcv,left ,SocketFlags.None );
                           left 
    -= curRcv;
                           
    if ( left == 0 ) {                                    // 数据已经全部接收 
                                flag = 0;
                                
    break;
                            }

                            
    else {
                                
    if ( curRcv > 0 ) {                                // 数据已经部分接收
                                    continue;
                                }

                                
    else {                                            // 出现错误
                                    flag = -2;
                                    
    break;
                                }

                            }

                        }

                        
    else {                                                    // 超时退出
                            flag = -1;
                            
    break;
                        }

                    }

                }

                
    catch ( SocketException e ) {
                    Log.WriteLog ( e );
                    flag 
    = -3;
                }

                
    return flag;
            }


            
    /**//// <summary>
            
    /// 接收远程主机发送的数据
            
    /// </summary>
            
    /// <param name="socket">要接收数据且已经连接到远程主机的 socket</param>
            
    /// <param name="buffer">存储接收到的数据的字符串</param>
            
    /// <param name="bufferLen">待接收的数据的长度</param>
            
    /// <param name="outTime">接收数据的超时时间,以秒为单位,可以精确到微秒</param>
            
    /// <returns>0:接收数据成功;-1:超时;-2:接收数据出现错误;-3:接收数据时出现异常</returns>
            
    /// <remarks >
            
    /// 当 outTime 指定为-1时,将一直等待直到有数据需要接收;
            
    /// </remarks>

            public static int RecvData ( Socket socket,string buffer ,int bufferLen,int outTime ) {
                
    if ( bufferLen <= 0 ) {
                    
    throw new ArgumentException ("存储待接收数据的缓冲区长度必须大于0");
                }

                
    byte[] tmp = new byte [ bufferLen ];
                
    int flag = 0;
                
    if ( ( flag = RecvData ( socket,tmp,outTime)) == 0{
                    buffer 
    = System.Text.Encoding .Default .GetString ( tmp );
                }

                
    return flag;
            }



            
    /**//// <summary>
            
    /// 向远程主机发送文件
            
    /// </summary>
            
    /// <param name="socket" >要发送数据且已经连接到远程主机的 socket</param>
            
    /// <param name="fileName">待发送的文件名称</param>
            
    /// <param name="maxBufferLength">文件发送时的缓冲区大小</param>
            
    /// <param name="outTime">发送缓冲区中的数据的超时时间</param>
            
    /// <returns>0:发送文件成功;-1:超时;-2:发送文件出现错误;-3:发送文件出现异常;-4:读取待发送文件发生错误</returns>
          
    /// <remarks >
          
    /// 当 outTime 指定为-1时,将一直等待直到有数据需要发送
          
    /// </remarks>

          public static int SendFile ( Socket socket ,string fileName,int maxBufferLength,int outTime ) {
               
    if ( fileName == null || maxBufferLength <= 0 ) {
                   
    throw new ArgumentException ("待发送的文件名称为空或发送缓冲区的大小设置不正确.");
                }


                
    int flag = 0;
                
    try {
                    FileStream fs 
    = new FileStream ( fileName,FileMode.Open ,FileAccess.Read );
                    
    long fileLen = fs.Length ;                        // 文件长度
                    long leftLen = fileLen;                            // 未读取部分
                    int readLen = 0;                                // 已读取部分
                    byte[] buffer = null;
                    
                    
    if ( fileLen <= maxBufferLength ) {            /**//* 文件可以一次读取*/
                       buffer 
    = new byte [ fileLen ];
                       readLen 
    = fs.Read (buffer,0,(int )fileLen );
                       flag 
    = SendData( socket,buffer,outTime );
                   }

                   
    else {                                    /**//* 循环读取文件,并发送 */                    
                        buffer 
    = new byte[ maxBufferLength ];
                        
    while ( leftLen != 0 ) {                    
                            readLen 
    = fs.Read (buffer,0,maxBufferLength );
                            
    if ( (flag = SendData( socket,buffer,outTime ) ) < 0 ) {
                                
    break;
                            }

                            leftLen 
    -= readLen;
                        }

                    }

                    fs.Close ();
                }

                
    catch ( IOException e ) {
                    Log.WriteLog ( e );
                    flag 
    = -4;
                }

                
    return flag;
            }


            
    /**//// <summary>
            
    /// 向远程主机发送文件
            
    /// </summary>
            
    /// <param name="socket" >要发送数据且已经连接到远程主机的 socket</param>
            
    /// <param name="fileName">待发送的文件名称</param>
            
    /// <returns>0:发送文件成功;-1:超时;-2:发送文件出现错误;-3:发送文件出现异常;-4:读取待发送文件发生错误</returns>

            public static int SendFile ( Socket socket ,string fileName ) {
                
    return SendFile ( socket,fileName,2048,1 );
            }



            
    /**//// <summary>
            
    /// 接收远程主机发送的文件
            
    /// </summary>
            
    /// <param name="socket">待接收数据且已经连接到远程主机的 socket</param>
            
    /// <param name="fileName">保存接收到的数据的文件名</param>
            
    /// <param name="fileLength" >待接收的文件的长度</param>
            
    /// <param name="maxBufferLength">接收文件时最大的缓冲区大小</param>
            
    /// <param name="outTime">接受缓冲区数据的超时时间</param>
            
    /// <returns>0:接收文件成功;-1:超时;-2:接收文件出现错误;-3:接收文件出现异常;-4:写入接收文件发生错误</returns>
            
    /// <remarks >
            
    /// 当 outTime 指定为-1时,将一直等待直到有数据需要接收
            
    /// </remarks>

            public static int RecvFile ( Socket socket ,string fileName,long fileLength,int maxBufferLength,int outTime ) {
               
    if ( fileName == null || maxBufferLength <= 0 ) {
                   
    throw new ArgumentException ("保存接收数据的文件名称为空或发送缓冲区的大小设置不正确.");
                }


                
    int flag = 0;
                
    try {
                    FileStream fs 
    = new FileStream (fileName,FileMode.Create);
                    
    byte []  buffer = null;
     
                    
    if ( fileLength <= maxBufferLength ) {                /**//* 一次读取所传送的文件 */
                        buffer 
    = new byte [ fileLength ];
                        
    if ( ( flag =RecvData(socket,buffer,outTime ) ) == 0 ) {
                            fs.Write ( buffer,
    0,(int)fileLength);
                        }

                    }

                    
    else {                                        /**//* 循环读取网络数据,并写入文件 */
                        
    int rcvLen = maxBufferLength;
                        
    long leftLen = fileLength;                        //剩下未写入的数据
                        buffer = new byte [ rcvLen ];

                        
    while (  leftLen != 0 ) {                        
                            
    if ( ( flag =RecvData(socket,buffer,outTime ) ) < 0 ) {
                                
    break;
                            }

                            fs.Write (buffer,
    0,rcvLen );
                            leftLen 
    -= rcvLen;                        
                            rcvLen  
    = ( maxBufferLength < leftLen ) ? maxBufferLength :((int) leftLen) ;
                       }

                   }

                   fs.Close ();
               }

               
    catch ( IOException e ) {
                   Log.WriteLog ( e );
                   flag 
    = -4;
               }

               
    return flag;
           }


           
    /**//// <summary>
           
    /// 接收远程主机发送的文件
           
    /// </summary>
           
    /// <param name="socket">待接收数据且已经连接到远程主机的 socket</param>
           
    /// <param name="fileName">保存接收到的数据的文件名</param>
           
    /// <param name="fileLength" >待接收的文件的长度</param>
           
    /// <returns>0:接收文件成功;-1:超时;-2:接收文件出现错误;-3:接收文件出现异常;-4:写入接收文件发生错误</returns>

            public static int RecvFile ( Socket socket,string fileName,long fileLength ) {
                
    return RecvFile ( socket,fileName,fileLength,2048,1);
            }

        }

    }

  • 相关阅读:
    R vs Python:构建data.frame、读取csv与统计描述
    R语言学习笔记:使用reshape2包实现整合与重构
    Python学习笔记:lambda表达式
    Python学习笔记:startswith & endswith 判断开头结尾是否为指定字符串
    Python学习笔记:一手漂亮的Python函数
    电信行业数据挖掘分析
    Oracle学习笔记:实现select top N的方法
    Oracle学习笔记:ORA-22992 cannot use LOB locators selected from remote tables
    Linux学习笔记:ls和ll命令
    vb常用命名空间
  • 原文地址:https://www.cnblogs.com/shengshuai/p/Socket.html
Copyright © 2020-2023  润新知