C#之Socket操作類執行個體解析

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本文展示了一個C#的Socket操作類的完整執行個體，並附帶了用法說明，分享給大家供大家參考之用。具體方法如下：

主要功能代碼如下：

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Net.Sockets;using System.Collections;using System.Net;using System.Runtime.Serialization;using System.Runtime.Serialization.Formatters.Binary;using System.IO;using System.Collections.Specialized;using System.Threading;public class DuxSocketClient{ #region 私人欄位 /// <summary> /// 設定資料緩衝區大小 預設1024 /// </summary> private static int m_maxpacket = 1024 * 4; public delegate void SendFileProgress(int progress); public delegate void ReceiveFileProgress(int progress); #endregion #region 伺服器偵聽 /// <summary> /// 伺服器偵聽方法 返回null則說明沒有連結上 /// </summary> /// <returns>返回一個通訊端(Socket)</returns> public static Socket ListenerSocket(TcpListener listener) {  try  {   Socket socket = listener.AcceptSocket();   return socket;  }  catch  {   return null;  } } /// <summary> /// 伺服器偵聽方法 返回null則說明沒有連結上 /// </summary> /// <param name="listener"></param> /// <returns>返回一個網路流</returns> public static NetworkStream ListenerStream(TcpListener listener) {  try  {   TcpClient client = listener.AcceptTcpClient();   return client.GetStream();  }  catch  {   return null;  } } #endregion #region 用戶端串連 public static Socket ConnectSocket(TcpClient tcpclient, IPEndPoint ipendpoint) {  try  {   tcpclient.Connect(ipendpoint);   return tcpclient.Client;  }  catch  {   return null;  } } public static Socket ConnectSocket(TcpClient tcpclient, IPAddress ipadd, int port) {  try  {   tcpclient.Connect(ipadd, port);   return tcpclient.Client;  }  catch  {   return null;  } } public static NetworkStream ConnectStream(TcpClient tcpclient, IPEndPoint ipendpoint) {  try  {   tcpclient.Connect(ipendpoint);   return tcpclient.GetStream();  }  catch  {   return null;  } } public static NetworkStream ConnectStream(TcpClient tcpclient, IPAddress ipadd, int port) {  try  {   tcpclient.Connect(ipadd, port);   return tcpclient.GetStream();  }  catch  {   return null;  } } #endregion #region Socket接收資料 /// <summary> /// 接受固定長度字串 /// </summary> /// <param name="socket"></param> /// <param name="size"></param> /// <returns></returns> public static byte[] ReceiveFixData(Socket socket, int size) {  int offset = 0;  int recv = 0;  int dataleft = size;  byte[] msg = new byte[size];  while (dataleft > 0)  {   recv = socket.Receive(msg, offset, dataleft, 0);   if (recv == 0)   {    break;   }   offset += recv;   dataleft -= recv;  }  return msg; } /// <summary> /// 接收變長字串 /// 為了處理粘包問題 ,每次發送資料時 包頭(資料位元組長度) + 本文 /// 這個發送小資料 /// 設定包頭的位元組為8,不能超過8位元的位元組數組 /// </summary> /// <param name="socket"></param> /// <returns>byte[]數組</returns> public static byte[] ReceiveVarData(Socket socket) {  //每次接受資料時,接收固定長度的包頭,包頭長度為8  byte[] lengthbyte = ReceiveFixData(socket, 8);  //length得到字元長度 然後加工處理得到數字  int length = GetPacketLength(lengthbyte);  //得到本文  return ReceiveFixData(socket, length); } /// <summary> /// 接收T類對象,還原序列化 /// </summary> /// <typeparam name="T">接收T類對象,T類必須是一個可序列化類別</typeparam> /// <param name="socket"></param> /// <returns></returns> public static T ReceiveVarData<T>(Socket socket) {  //先接收包頭長度 固定8個位元組  byte[] lengthbyte = ReceiveFixData(socket, 8);  //得到位元組長度  int length = GetPacketLength(lengthbyte);  byte[] bytecoll = new byte[m_maxpacket];  IFormatter format = new BinaryFormatter();  MemoryStream stream = new MemoryStream();  int offset = 0; //接收位元組個數  int lastdata = length; //還剩下多少沒有接收,初始大小等於實際大小  int receivedata = m_maxpacket; //每次接收大小  //迴圈接收  int mark = 0; //標記幾次接收到的資料為0長度  while (true)  {   //剩下的位元組數是否小於緩衝大小   if (lastdata < m_maxpacket)   {    receivedata = lastdata; //就只接收剩下的位元組數   }   int count = socket.Receive(bytecoll,0,receivedata,0);   if (count > 0)   {    stream.Write(bytecoll, 0, count);    offset += count;    lastdata -= count;    mark = 0;   }   else   {    mark++;    if (mark == 10)    {     break;    }   }   if (offset == length)   {    break;   }  }  stream.Seek(0, SeekOrigin.Begin); //必須要這個 或者stream.Position = 0;  T t = (T)format.Deserialize(stream);  stream.Close();  return t; } /// <summary> /// 在預先得到檔案的檔案名稱和大小 /// 調用此方法接收檔案 /// </summary> /// <param name="socket"></param> /// <param name="path">路徑必須存在</param> public static bool ReceiveFile(Socket socket, string path, string filename, long size,ReceiveFileProgress progress) {  bool ret = false;  if (Directory.Exists(path))  {   //主要是防止有重名檔案   string savepath = GetPath(path, filename); //得到檔案路徑   //緩衝區   byte[] file = new byte[m_maxpacket];   int count = 0; //每次接收的實際長度   int receivedata = m_maxpacket; //每次要接收的長度   long offset = 0; //迴圈接收的總長度   long lastdata = size; //剩餘多少還沒接收   int mark = 0;   using (FileStream fs = new FileStream(savepath, FileMode.OpenOrCreate, FileAccess.Write))   {    if (size > 0)    {     while (true)     {      if (lastdata < receivedata)      {       receivedata = Convert.ToInt32(lastdata);      }      count = socket.Receive(file, 0, receivedata, SocketFlags.None);      if (count > 0)      {       fs.Write(file, 0, count);       offset += count;       lastdata -= count;       mark = 0;      }      else      {       mark++; //連續5次接收為0位元組 則跳出迴圈       if (mark ==10)       {        break;       }      }      //接收進度      if (progress != null)      {       progress(Convert.ToInt32(((Convert.ToDouble(offset) / Convert.ToDouble(size)) * 100)));      }      //接收完畢      if (offset == size)      {       ret = true;       break;      }     }    }    fs.Close();   }  }  return ret; } public static bool ReceiveFile(Socket socket, string path, string filename, long size) {  return ReceiveFile(socket, path, filename, size,null); } /// <summary> /// 預先不知道檔案名稱和檔案大小 用此方法接收 /// 此方法對於的發送方法是SendFile() /// </summary> /// <param name="socket"></param> /// <param name="path">要儲存的目錄</param> public static void ReceiveFile(Socket socket, string path) {  //得到包頭資訊位元組數組 (檔案名稱 + 檔案大小 的字串長度)  //取前8位  byte[] info_bt = ReceiveFixData(socket, 8);  //得到包頭資訊字元長度  int info_length = GetPacketLength(info_bt);  //提取包頭資訊,(檔案名稱 + 檔案大小 的字串長度)  byte[] info = ReceiveFixData(socket, info_length);  //得到檔案資訊字串 (檔案名稱 + 檔案大小)  string info_str = System.Text.Encoding.UTF8.GetString(info);  string[] strs = info_str.Split(‘|‘);  string filename = strs[0]; //檔案名稱  long length = Convert.ToInt64(strs[1]); //檔案大小  //開始接收檔案  ReceiveFile(socket, path, filename, length); } private static int GetPacketLength(byte[] length) {  string str = System.Text.Encoding.UTF8.GetString(length);  str = str.TrimEnd(‘*‘); ;//("*", "");  int _length = 0;  if (int.TryParse(str, out _length))  {   return _length;  }  else  {   return 0;  } } /// <summary> /// 得到檔案路徑(防止有檔案名稱重複) /// 如:aaa.txt已經在directory目錄下存在,則會得到檔案aaa(1).txt /// </summary> /// <param name="directory">目錄名</param> /// <param name="file">檔案名稱</param> /// <returns>檔案路徑</returns> static int i = 0; static string markPath = String.Empty; public static string GetPath(string directory, string file) {  if (markPath == String.Empty)  {   markPath = Path.Combine(directory, file);  }  string path = Path.Combine(directory, file);  if (File.Exists(path))  {   i++;   string filename = Path.GetFileNameWithoutExtension(markPath) + "(" + i.ToString() + ")";   string extension = Path.GetExtension(markPath);   return GetPath(directory, filename + extension);  }  else  {   i = 0;   markPath = String.Empty;   return path;  } } #endregion #region Socket發送資料 /// <summary> /// 發送固定長度訊息 /// 發送位元組數不能大於int型最大值 /// </summary> /// <param name="socket"></param> /// <param name="msg"></param> /// <returns>返回傳送位元組個數</returns> public static int SendFixData(Socket socket, byte[] msg) {  int size = msg.Length; //要發送位元組長度  int offset = 0;     //已經發送長度  int dataleft = size;  //剩下字元  int senddata = m_maxpacket; //每次發送大小  while (true)  {   //如過剩下的位元組數 小於 每次發送位元組數   if (dataleft < senddata)   {    senddata = dataleft;   }   int count = socket.Send(msg, offset, senddata, SocketFlags.None);   offset += count;   dataleft -= count;   if (offset == size)   {    break;   }  }  return offset; } /// <summary> /// 發送變長資訊 格式 包頭(包頭佔8位) + 本文 /// </summary> /// <param name="socket"></param> /// <param name="contact">發送文本</param> /// <returns></returns> public static int SendVarData(Socket socket, string contact) {  //得到字元長度  int size = System.Text.Encoding.UTF8.GetBytes(contact).Length;  //包頭字元  string length = GetSendPacketLengthStr(size);  //包頭 + 本文  byte[] sendbyte = System.Text.Encoding.UTF8.GetBytes(length + contact);  //發送  return SendFixData(socket, sendbyte); } /// <summary> /// 發送變成資訊 /// </summary> /// <param name="socket"></param> /// <param name="bytes"></param> /// <returns></returns> public static int SendVarData(Socket socket, byte[] bytes) {  //得到包頭位元組  int size = bytes.Length;  string length = GetSendPacketLengthStr(size);  byte[] lengthbyte = System.Text.Encoding.UTF8.GetBytes(length);  //發送包頭  SendFixData(socket, lengthbyte);  //因為不知道本文是什麼編碼所以沒有合并  //發送本文  return SendFixData(socket, bytes); } /// <summary> /// 發送T類型對象,序列化 /// </summary> /// <typeparam name="T">T類型</typeparam> /// <param name="socket"></param> /// <param name="obj">T類型對象,必須是可序列化的</param> /// <returns></returns> public static int SendSerializeObject<T>(Socket socket, T obj) {  byte[] bytes = SerializeObject(obj);  return SendVarData(socket, bytes); } /// <summary> /// 傳送檔案 /// </summary> /// <param name="socket">socket對象</param> /// <param name="path">檔案路徑</param> /// <param name="issend">是否傳送檔案(頭)資訊,如果當前知道檔案[大小,名稱]則為false</param> /// <param name="progress"></param> /// <returns></returns> public static bool SendFile(Socket socket, string path,bool issend,SendFileProgress progress) {  bool ret = false;  if (File.Exists(path))  {   FileInfo fileinfo = new FileInfo(path);   string filename = fileinfo.Name;   long length = fileinfo.Length;   //傳送檔案資訊   if (issend)   {    SendVarData(socket, filename + "|" + length);   }   //傳送檔案   long offset = 0;   byte[] b = new byte[m_maxpacket];   int mark = 0;   using (FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read))   {    int senddata = b.Length;    long i = length;    //迴圈讀取發送    while (true)    {     int count = fs.Read(b, 0, senddata);     if (count > 0)     {      socket.Send(b, 0, count, SocketFlags.None);      offset += count;      mark = 0;     }     else     {      mark++;      if (mark == 10)      {       break;      }     }     if (progress != null)     {      progress(Convert.ToInt32(((Convert.ToDouble(offset) / Convert.ToDouble(length)) * 100)));     }     if (offset == length)     {      break;     }     Thread.Sleep(50); //設定等待時間,以免粘包    }   }  }  return ret; } /// <summary> /// 傳送檔案,不需要進度資訊 /// </summary> /// <param name="socket">socket對象</param> /// <param name="path">檔案路徑</param> /// <param name="issend">是否發生(頭)資訊</param> /// <returns></returns> public static bool SendFile(Socket socket, string path,bool issend) {  return SendFile(socket, path, issend, null); } /// <summary> /// 傳送檔案,不需要進度資訊和(頭)資訊 /// </summary> /// <param name="socket">socket對象</param> /// <param name="path">檔案路徑</param> /// <returns></returns> public static bool SendFile(Socket socket, string path) {  return SendFile(socket, path, false, null); } private static byte[] SerializeObject(object obj) {  IFormatter format = new BinaryFormatter();  MemoryStream stream = new MemoryStream();  format.Serialize(stream, obj);  byte[] ret = stream.ToArray();  stream.Close();  return ret; } private static string GetSendPacketLengthStr(int size) {  string length = size.ToString() + "********"; //得到size的長度  return length.Substring(0, 8); //截取前前8位 } #endregion #region NetworkStream接收資料 //沒寫 #endregion #region NetworkStream發送資料 //沒寫 #endregion}

用法說明:

每個接收的方法都對應著有發送方法

如:

發送方法:

SendFixData(socket,"01");

接收方法:

ReceiveFixData(socket,2); //size 就為2

不知道發送文本長度:

string txt = ????  //不知道有多少字元

發送方法:

SendVarData(socket,txt); //有重載版

接收方法:

ReceiveVarData(socket);

希望本文所述執行個體對大家C#程式設計有所協助。

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  C#之Socket操作類執行個體解析

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C#之Socket操作類執行個體解析