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); } }
}