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.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);
}
}
}
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);
}
}
}