网络操作相关类

using System;using System.Text;using System.Net.Sockets;using System.Net.Mail;using System.Net; namespace mynethelper{    /// <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    }}