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>
publicclassNetHelper
{
#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>
publicstaticintGetValidPort(string port)
{
//声明返回的正确端口号
int validPort =-1;
//最小有效端口号
constint MINPORT =0;
//最大有效端口号
constint MAXPORT =65535;
//检测端口号
try
{
//传入的端口号为空则抛出异常
if(port =="")
{
thrownewException("端口号不能为空！");
}
//检测端口范围
if((Convert.ToInt32(port)< MINPORT)||(Convert.ToInt32(port)> MAXPORT))
{
thrownewException("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>
publicstaticIPAddressStringToIPAddress(string ip)
{
returnIPAddress.Parse(ip);
}
#endregion
#region 获取本机的计算机名
/// <summary>
/// 获取本机的计算机名
/// </summary>
publicstaticstringLocalHostName
{
get
{
returnDns.GetHostName();
}
}
#endregion
#region 获取本机的局域网IP
/// <summary>
/// 获取本机的局域网IP
/// </summary>
publicstaticstring 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>
publicstaticstring 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>
publicstaticstringGetClientIP(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>
publicstaticIPEndPointCreateIPEndPoint(string ip,int port)
{
IPAddress ipAddress =StringToIPAddress(ip);
returnnewIPEndPoint(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>
publicstaticTcpListenerCreateTcpListener()
{
//创建一个自动分配的网络节点
IPAddress ipAddress =IPAddress.Any;
IPEndPoint localEndPoint =newIPEndPoint(ipAddress,0);
returnnewTcpListener(localEndPoint);
}
/// <summary>
/// 创建一个TcpListener对象
/// </summary>
/// <param name="ip">IP地址</param>
/// <param name="port">端口</param>
publicstaticTcpListenerCreateTcpListener(string ip,int port)
{
//创建一个网络节点
IPAddress ipAddress =StringToIPAddress(ip);
IPEndPoint localEndPoint =newIPEndPoint(ipAddress, port);
returnnewTcpListener(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>
publicstaticSocketCreateTcpSocket()
{
returnnewSocket(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>
publicstaticSocketCreateUdpSocket()
{
returnnewSocket(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>
publicstaticIPEndPointGetLocalPoint(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>
publicstaticstringGetLocalPoint_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>
publicstaticintGetLocalPoint_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>
publicstaticIPEndPointGetLocalPoint(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>
publicstaticstringGetLocalPoint_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>
publicstaticintGetLocalPoint_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>
publicstaticvoidBindEndPoint(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>
publicstaticvoidBindEndPoint(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>
publicstaticvoidStartListen(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>
publicstaticvoidStartListen(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>
publicstaticvoidStartListen(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>
publicstatic 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)
{
thrownewException(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>
publicstaticvoidSendMsg(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>
publicstaticvoidSendMsg(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>
publicstaticvoidReceiveMsg(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>
publicstaticstringReceiveMsg(Socket socket)
{
//定义接收缓冲区
byte[] buffer =newbyte[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 =newbyte[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
returnConvertHelper.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>
publicstaticvoidClose(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>
publicstatic bool SendEmail(string receiveEmail,string msgSubject,string msgBody, bool IsEnableSSL)
{
//创建电子邮件对象
MailMessage email =newMailMessage();
//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 =newSmtpClient();
//开启SSL
smtp.EnableSsl=IsEnableSSL;
try
{
//发送电子邮件
smtp.Send(email);
returntrue;
}
catch(Exception ex)
{
throw ex;
}
}
#endregion
}
}