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ybny
10年前发布

自定义的C#网络操作基础类（NetHelper）

using System;  using System.Text;  using System.Net.Sockets;  using System.Net.Mail;  using System.Net;    namespace DotNet.Utilities  {      /// <summary>      /// 网络操作相关的类      /// </summary>          public class NetHelper      {          #region 检查设置的IP地址是否正确，返回正确的IP地址          /// <summary>          /// 检查设置的IP地址是否正确，并返回正确的IP地址,无效IP地址返回"-1"。          /// </summary>          /// <param name="ip">设置的IP地址</param>          //public static string GetValidIP(string ip)          //{          //    if (PageValidate.IsIP(ip))          //    {          //        return ip;          //    }          //    else          //    {          //        return "-1";          //    }          //}          #endregion            #region 检查设置的端口号是否正确，返回正确的端口号          /// <summary>          /// 检查设置的端口号是否正确，并返回正确的端口号,无效端口号返回-1。          /// </summary>          /// <param name="port">设置的端口号</param>                  public static int GetValidPort(string port)          {              //声明返回的正确端口号              int validPort = -1;              //最小有效端口号              const int MINPORT = 0;              //最大有效端口号              const int MAXPORT = 65535;                //检测端口号              try              {                  //传入的端口号为空则抛出异常                  if (port == "")                  {                      throw new Exception("端口号不能为空！");                  }                    //检测端口范围                  if ((Convert.ToInt32(port) < MINPORT) || (Convert.ToInt32(port) > MAXPORT))                  {                      throw new Exception("端口号范围无效！");                  }                    //为端口号赋值                  validPort = Convert.ToInt32(port);              }              catch (Exception ex)              {                  string errMessage = ex.Message;              }              return validPort;          }          #endregion            #region 将字符串形式的IP地址转换成IPAddress对象          /// <summary>          /// 将字符串形式的IP地址转换成IPAddress对象          /// </summary>          /// <param name="ip">字符串形式的IP地址</param>                  public static IPAddress StringToIPAddress(string ip)          {              return IPAddress.Parse(ip);          }          #endregion            #region 获取本机的计算机名          /// <summary>          /// 获取本机的计算机名          /// </summary>          public static string LocalHostName          {              get              {                  return Dns.GetHostName();              }          }          #endregion            #region 获取本机的局域网IP          /// <summary>          /// 获取本机的局域网IP          /// </summary>                  public static string LANIP          {              get              {                  //获取本机的IP列表,IP列表中的第一项是局域网IP，第二项是广域网IP                  IPAddress[] addressList = Dns.GetHostEntry(Dns.GetHostName()).AddressList;                    //如果本机IP列表为空，则返回空字符串                  if (addressList.Length < 1)                  {                      return "";                  }                    //返回本机的局域网IP                  return addressList[0].ToString();              }          }          #endregion            #region 获取本机在Internet网络的广域网IP          /// <summary>          /// 获取本机在Internet网络的广域网IP          /// </summary>                  public static string WANIP          {              get              {                  //获取本机的IP列表,IP列表中的第一项是局域网IP，第二项是广域网IP                  IPAddress[] addressList = Dns.GetHostEntry(Dns.GetHostName()).AddressList;                    //如果本机IP列表小于2，则返回空字符串                  if (addressList.Length < 2)                  {                      return "";                  }                    //返回本机的广域网IP                  return addressList[1].ToString();              }          }          #endregion            #region 获取远程客户机的IP地址          /// <summary>          /// 获取远程客户机的IP地址          /// </summary>          /// <param name="clientSocket">客户端的socket对象</param>                  public static string GetClientIP(Socket clientSocket)          {              IPEndPoint client = (IPEndPoint)clientSocket.RemoteEndPoint;              return client.Address.ToString();          }          #endregion            #region 创建一个IPEndPoint对象          /// <summary>          /// 创建一个IPEndPoint对象          /// </summary>          /// <param name="ip">IP地址</param>          /// <param name="port">端口号</param>                  public static IPEndPoint CreateIPEndPoint(string ip, int port)          {              IPAddress ipAddress = StringToIPAddress(ip);              return new IPEndPoint(ipAddress, port);          }          #endregion            #region 创建一个TcpListener对象          /// <summary>          /// 创建一个自动分配IP和端口的TcpListener对象          /// </summary>                  public static TcpListener CreateTcpListener()          {              //创建一个自动分配的网络节点              IPAddress ipAddress = IPAddress.Any;              IPEndPoint localEndPoint = new IPEndPoint(ipAddress, 0);                return new TcpListener(localEndPoint);          }          /// <summary>          /// 创建一个TcpListener对象          /// </summary>          /// <param name="ip">IP地址</param>          /// <param name="port">端口</param>                  public static TcpListener CreateTcpListener(string ip, int port)          {              //创建一个网络节点              IPAddress ipAddress = StringToIPAddress(ip);              IPEndPoint localEndPoint = new IPEndPoint(ipAddress, port);                return new TcpListener(localEndPoint);          }          #endregion            #region 创建一个基于TCP协议的Socket对象          /// <summary>          /// 创建一个基于TCP协议的Socket对象          /// </summary>                  public static Socket CreateTcpSocket()          {              return new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);          }          #endregion            #region 创建一个基于UDP协议的Socket对象          /// <summary>          /// 创建一个基于UDP协议的Socket对象          /// </summary>                  public static Socket CreateUdpSocket()          {              return new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);          }          #endregion            #region 获取本地终结点            #region 获取TcpListener对象的本地终结点          /// <summary>          /// 获取TcpListener对象的本地终结点          /// </summary>          /// <param name="tcpListener">TcpListener对象</param>                  public static IPEndPoint GetLocalPoint(TcpListener tcpListener)          {              return (IPEndPoint)tcpListener.LocalEndpoint;          }            /// <summary>          /// 获取TcpListener对象的本地终结点的IP地址          /// </summary>          /// <param name="tcpListener">TcpListener对象</param>                  public static string GetLocalPoint_IP(TcpListener tcpListener)          {              IPEndPoint localEndPoint = (IPEndPoint)tcpListener.LocalEndpoint;              return localEndPoint.Address.ToString();          }            /// <summary>          /// 获取TcpListener对象的本地终结点的端口号          /// </summary>          /// <param name="tcpListener">TcpListener对象</param>                  public static int GetLocalPoint_Port(TcpListener tcpListener)          {              IPEndPoint localEndPoint = (IPEndPoint)tcpListener.LocalEndpoint;              return localEndPoint.Port;          }          #endregion            #region 获取Socket对象的本地终结点          /// <summary>          /// 获取Socket对象的本地终结点          /// </summary>          /// <param name="socket">Socket对象</param>                  public static IPEndPoint GetLocalPoint(Socket socket)          {              return (IPEndPoint)socket.LocalEndPoint;          }            /// <summary>          /// 获取Socket对象的本地终结点的IP地址          /// </summary>          /// <param name="socket">Socket对象</param>                  public static string GetLocalPoint_IP(Socket socket)          {              IPEndPoint localEndPoint = (IPEndPoint)socket.LocalEndPoint;              return localEndPoint.Address.ToString();          }            /// <summary>          /// 获取Socket对象的本地终结点的端口号          /// </summary>          /// <param name="socket">Socket对象</param>                  public static int GetLocalPoint_Port(Socket socket)          {              IPEndPoint localEndPoint = (IPEndPoint)socket.LocalEndPoint;              return localEndPoint.Port;          }          #endregion            #endregion            #region 绑定终结点          /// <summary>          /// 绑定终结点          /// </summary>          /// <param name="socket">Socket对象</param>          /// <param name="endPoint">要绑定的终结点</param>          public static void BindEndPoint(Socket socket, IPEndPoint endPoint)          {              if (!socket.IsBound)              {                  socket.Bind(endPoint);              }          }            /// <summary>          /// 绑定终结点          /// </summary>          /// <param name="socket">Socket对象</param>                  /// <param name="ip">服务器IP地址</param>          /// <param name="port">服务器端口</param>          public static void BindEndPoint(Socket socket, string ip, int port)          {              //创建终结点              IPEndPoint endPoint = CreateIPEndPoint(ip, port);                //绑定终结点              if (!socket.IsBound)              {                  socket.Bind(endPoint);              }          }          #endregion            #region 指定Socket对象执行监听          /// <summary>          /// 指定Socket对象执行监听，默认允许的最大挂起连接数为100          /// </summary>          /// <param name="socket">执行监听的Socket对象</param>          /// <param name="port">监听的端口号</param>          public static void StartListen(Socket socket, int port)          {              //创建本地终结点              IPEndPoint localPoint = CreateIPEndPoint(NetHelper.LocalHostName, port);                //绑定到本地终结点              BindEndPoint(socket, localPoint);                //开始监听              socket.Listen(100);          }            /// <summary>          /// 指定Socket对象执行监听          /// </summary>          /// <param name="socket">执行监听的Socket对象</param>          /// <param name="port">监听的端口号</param>          /// <param name="maxConnection">允许的最大挂起连接数</param>          public static void StartListen(Socket socket, int port, int maxConnection)          {              //创建本地终结点              IPEndPoint localPoint = CreateIPEndPoint(NetHelper.LocalHostName, port);                //绑定到本地终结点              BindEndPoint(socket, localPoint);                //开始监听              socket.Listen(maxConnection);          }            /// <summary>          /// 指定Socket对象执行监听          /// </summary>          /// <param name="socket">执行监听的Socket对象</param>          /// <param name="ip">监听的IP地址</param>          /// <param name="port">监听的端口号</param>          /// <param name="maxConnection">允许的最大挂起连接数</param>          public static void StartListen(Socket socket, string ip, int port, int maxConnection)          {              //绑定到本地终结点              BindEndPoint(socket, ip, port);                //开始监听              socket.Listen(maxConnection);          }          #endregion            #region 连接到基于TCP协议的服务器          /// <summary>          /// 连接到基于TCP协议的服务器,连接成功返回true，否则返回false          /// </summary>          /// <param name="socket">Socket对象</param>          /// <param name="ip">服务器IP地址</param>          /// <param name="port">服务器端口号</param>               public static bool Connect(Socket socket, string ip, int port)          {              try              {                  //连接服务器                  socket.Connect(ip, port);                    //检测连接状态                  return socket.Poll(-1, SelectMode.SelectWrite);              }              catch (SocketException ex)              {                  throw new Exception(ex.Message);                  //LogHelper.WriteTraceLog(TraceLogLevel.Error, ex.Message);              }          }          #endregion            #region 以同步方式发送消息          /// <summary>          /// 以同步方式向指定的Socket对象发送消息          /// </summary>          /// <param name="socket">socket对象</param>          /// <param name="msg">发送的消息</param>          public static void SendMsg(Socket socket, byte[] msg)          {              //发送消息              socket.Send(msg, msg.Length, SocketFlags.None);          }            /// <summary>          /// 使用UTF8编码格式以同步方式向指定的Socket对象发送消息          /// </summary>          /// <param name="socket">socket对象</param>          /// <param name="msg">发送的消息</param>          public static void SendMsg(Socket socket, string msg)          {              //将字符串消息转换成字符数组              byte[] buffer = ConvertHelper.StringToBytes(msg, Encoding.Default);                //发送消息              socket.Send(buffer, buffer.Length, SocketFlags.None);          }          #endregion            #region 以同步方式接收消息          /// <summary>          /// 以同步方式接收消息          /// </summary>          /// <param name="socket">socket对象</param>          /// <param name="buffer">接收消息的缓冲区</param>          public static void ReceiveMsg(Socket socket, byte[] buffer)          {              socket.Receive(buffer);          }            /// <summary>          /// 以同步方式接收消息，并转换为UTF8编码格式的字符串,使用5000字节的默认缓冲区接收。          /// </summary>          /// <param name="socket">socket对象</param>                  public static string ReceiveMsg(Socket socket)          {              //定义接收缓冲区              byte[] buffer = new byte[5000];              //接收数据，获取接收到的字节数              int receiveCount = socket.Receive(buffer);                //定义临时缓冲区              byte[] tempBuffer = new byte[receiveCount];              //将接收到的数据写入临时缓冲区              Buffer.BlockCopy(buffer, 0, tempBuffer, 0, receiveCount);              //转换成字符串，并将其返回              return ConvertHelper.BytesToString(tempBuffer, Encoding.Default);          }          #endregion            #region 关闭基于Tcp协议的Socket对象          /// <summary>          /// 关闭基于Tcp协议的Socket对象          /// </summary>          /// <param name="socket">要关闭的Socket对象</param>          public static void Close(Socket socket)          {              try              {                  //禁止Socket对象接收和发送数据                  socket.Shutdown(SocketShutdown.Both);              }              catch (SocketException ex)              {                  throw ex;              }              finally              {                  //关闭Socket对象                  socket.Close();              }          }          #endregion            #region 发送电子邮件          /// <summary>          /// 发送电子邮件,所有SMTP配置信息均在config配置文件中system.net节设置.          /// </summary>          /// <param name="receiveEmail">接收电子邮件的地址</param>          /// <param name="msgSubject">电子邮件的标题</param>          /// <param name="msgBody">电子邮件的正文</param>          /// <param name="IsEnableSSL">是否开启SSL</param>          public static bool SendEmail(string receiveEmail, string msgSubject, string msgBody, bool IsEnableSSL)          {              //创建电子邮件对象              MailMessage email = new MailMessage();              //设置接收人的电子邮件地址              email.To.Add(receiveEmail);              //设置邮件的标题              email.Subject = msgSubject;              //设置邮件的正文              email.Body = msgBody;              //设置邮件为HTML格式              email.IsBodyHtml = true;                //创建SMTP客户端，将自动从配置文件中获取SMTP服务器信息              SmtpClient smtp = new SmtpClient();              //开启SSL              smtp.EnableSsl = IsEnableSSL;                try              {                  //发送电子邮件                  smtp.Send(email);                    return true;              }              catch (Exception ex)              {                  throw ex;              }          }            #endregion      }  }