c++实现对windwos 下socket 的封装(实现封包及拆包处理)
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1 SuperSocket.h
2
3 #pragma once
4 #include<string>
5 #include<iostream>
6 #include <WINSOCK2.H>
7 #include "MyThread.h"
8 #include "SuperThread.h"
9 using namespace std;
10 class SuperSocket
11 {
12 public:
13 typedef struct SockData{
14 int id;
15 int length;
16 const char* content;
17 }SockData;
18 public:
19 void Listen(int port);
20 bool Connect(string ipStr,int port);
21 void Send(SockData* data);
22 protected:
23 virtual void OnAccept(SOCKET* socket){};
24 void RollReceive();
25 void ListenThread();
26 int port;
27 virtual void OnReceive(SockData* data){};
28 SOCKET tempSocket;
29 SuperThread<SuperSocket>* mt;
30 };
SuperSocket.cpp
1 #include "SuperSocket.h"
2
3
4 void SuperSocket::ListenThread()
5 {
6 WORD wVersionRequested;// 定义版本信息变量
7 WSADATA wsaData;//定义数据信息变量
8 SOCKET sockfd;
9 struct sockaddr_in server_addr;
10 struct sockaddr_in client_addr;
11
12 int err;//定义错误号变量
13 wVersionRequested = MAKEWORD(1,1);//给版本信息赋值
14 err = WSAStartup(wVersionRequested, &wsaData);//给错误信息赋值
15 if(err!=0)
16 {
17 return;//告诉用户找不到合适的版本
18 }
19 //确认 Windows Sockets DLL 支持 1.1 版本
20 //DLL 版本可以高于 1.1
21 //系统返回的版本号始终是最低要求的 1.1，即应用程序与DLL 中可支持的最低版本号
22 if(LOBYTE(wsaData.wVersion)!= 1||HIBYTE(wsaData.wVersion)!=1)
23 {
24 WSACleanup();//告诉用户找不到合适的版本
25 return;
26 }
27
28 if((sockfd=socket(AF_INET,SOCK_STREAM, IPPROTO_TCP))==-1)
29 {
30 if (WSAGetLastError() == WSANOTINITIALISED)
31 {
32 printf("Error：WSANOTINITIALISED,please Call WSAStartup first\n");
33 return;
34 }
35 else
36 {
37 int err =WSAGetLastError();
38 printf("Bind error:%s,errorcode :%d\n",strerror(errno),err);
39 return;
40 }
41 }
42
43 /* 服务器端填充 sockaddr结构 */
44 memset(&server_addr,0,sizeof(struct sockaddr_in));
45 server_addr.sin_family=AF_INET;
46 server_addr.sin_addr.s_addr=htonl(INADDR_ANY);
47 server_addr.sin_port=htons(port);
48
49 /* 捆绑sockfd描述符 */
50 if(bind(sockfd,(struct sockaddr *)(&server_addr),sizeof(struct sockaddr))==-1)
51 {
52 int err = WSAGetLastError();
53 cout<<"Bind error:%s,errorcode :"<<strerror(errno)<<endl;;
54 return;
55 }
56
57 /* 监听sockfd描述符 */
58 if(listen(sockfd,5)==-1)
59 {
60 cout<<"Listen error:"<<strerror(errno)<<endl;
61 return;
62 }
63 while(1)
64 {
65 /* 服务器阻塞,直到客户程序建立连接 */
66 int sin_size=sizeof(struct sockaddr_in);
67 SOCKET socket;
68 cout<<"I am Listen ....."<<endl;
69 if((socket=accept(sockfd,(struct sockaddr *)(&client_addr),&sin_size))==INVALID_SOCKET )
70 {
71 cout<<"Accept error:"<<strerror(errno)<<endl;;
72 continue;
73 }
74 cout<<"Server get connection from "<<inet_ntoa(client_addr.sin_addr)<<endl;;
75 this->OnAccept(&socket);
76 }
77 }
78 void SuperSocket::Listen(int port)
79 {
80 this->port=port;
81 // MyThread mt;
82 // mt.InitThread(this,&SuperSocket::ListenThread);
83 // mt.StartThread();
84 this->mt=new SuperThread<SuperSocket>(this,&SuperSocket::ListenThread);
85 this->mt->StartThread();
86 }
87
88 bool SuperSocket::Connect(string ipStr,int port)
89 {
90 WSADATA Ws;
91 SOCKET CientSocket;
92 struct sockaddr_in ServerAddr;
93 int AddrLen = 0;
94 HANDLE hThread = NULL;
95
96 //Init Windows Socket
97 if ( WSAStartup(MAKEWORD(2,2), &Ws) != 0 )
98 {
99 cout<<"Init Windows Socket Failed::"<<GetLastError()<<endl;
100 return false;
101 }
102
103 //Create Socket
104 CientSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
105 if ( CientSocket == INVALID_SOCKET )
106 {
107 cout<<"Create Socket Failed::"<<GetLastError()<<endl;
108 return false;
109 }
110
111 ServerAddr.sin_family = AF_INET;
112 ServerAddr.sin_addr.s_addr = inet_addr(ipStr.c_str());
113 ServerAddr.sin_port = htons(port);
114 memset(ServerAddr.sin_zero, 0x00, 8);
115
116 int err = connect(CientSocket,(struct sockaddr*)&ServerAddr, sizeof(ServerAddr));
117 if ( err == SOCKET_ERROR )
118 {
119 cout<<"Connect Error::"<<GetLastError()<<endl;
120 return false;
121 }
122 else
123 {
124 // MyThread mt;
125 // mt.InitThread(this,&SuperSocket::RollReceive);
126 // mt.StartThread();
127 this->tempSocket=CientSocket;
128 SuperThread<SuperSocket> st(this,&SuperSocket::RollReceive);
129 st.StartThread();
130 return true;
131 }
132 }
133
134 void SuperSocket::RollReceive()
135 {
136 int iResult;
137 int recvbuflen=1024;
138 bool isComplete=true;
139 int ID;
140 int length;
141 int lenReaded;
142 int lenLeaved;
143 char content[100000];
144 while(true)
145 {
146 if(!isComplete)
147 {
148
149 iResult=recv(tempSocket,content+lenReaded,lenLeaved,0);
150 if(iResult<=0)
151 {
152 printf("recv failed with error: %d/n", WSAGetLastError());
153 closesocket(this->tempSocket);
154 break;
155 }
156 lenReaded+=iResult;
157 lenLeaved=length-lenReaded;
158 if(lenReaded<length)
159 {
160 isComplete=false;
161 }
162 }
163 else
164 {
165 iResult=recv(tempSocket,(char*)&ID,sizeof(int),0);
166 if(iResult<=0)
167 {
168 printf("recv failed with error 0: %d/n", WSAGetLastError());
169 closesocket(this->tempSocket);
170 break;
171 }
172 iResult=recv(tempSocket,(char*)&length,sizeof(int),0);
173 if(iResult!=sizeof(int))
174 {
175 printf("recv failed with error 1: %d/n", WSAGetLastError());
176 closesocket(this->tempSocket);
177 break;
178 }
179 memset(content,0,length+1);
180 iResult=recv(tempSocket,content,length,0);
181 if(iResult<=0)
182 {
183 printf("recv failed with error 2: %d/n", WSAGetLastError());
184 closesocket(this->tempSocket);
185 break;
186 }
187 lenReaded=length;
188 lenLeaved=length-lenReaded;
189 if(iResult<length)
190 {
191 isComplete=false;
192 }
193 }
194 if(lenLeaved<=0)
195 {
196 isComplete=true;
197 SuperSocket::SockData sockData;
198 sockData.id=ID;
199 sockData.length=length;
200 sockData.content=content;
201 this->OnReceive(&sockData);
202 }
203 }
204 }
205
206 void SuperSocket::Send(SuperSocket::SockData* data)
207 {
208 send(tempSocket,(char*)&data->id,sizeof(int),0);
209 send(tempSocket,(char*)&data->length,sizeof(int),0);
210 send(tempSocket,data->content,data->length,0);
211 }
SuperThread.h
#include<windows.h>
template<typename T>
class SuperThread
{
public:
SuperThread(T* t,void (T::*f)());
void StartThread();
void PauseThread();
void RestartThread();
void DestroyThread();
void WaitForThread();
static DWORD WINAPI StartRun(void* param);
T* t;
void (T::*f)();
static bool isOk;
private:
// pthread_t mThread;
HANDLE handle;
};
template<typename T>
bool SuperThread<T>::isOk=false;
template<typename T>
SuperThread<T>::SuperThread(T* t,void (T::*f)())
{
this->t=t;
this->f=f;
}
template<typename T>
void SuperThread<T>::StartThread()
{
// pthread_create(&mThread,NULL,&StartRun,this);
handle=CreateThread(NULL,0,StartRun,this,0,0);
while(!this->isOk)
{
Sleep(50);
}
this->isOk=false;
// WaitForSingleObject(hMutex,INFINITE);
}
template<typename T>
void SuperThread<T>::PauseThread()
{
}
template<typename T>
void SuperThread<T>::RestartThread()
{
}
template<typename T>
void SuperThread<T>::DestroyThread()
{
}
template<typename T>
void SuperThread<T>::WaitForThread()
{
//pthread_join(mThread,NULL);
WaitForSingleObject(handle,INFINITE);
}
template<typename T>
DWORD WINAPI SuperThread<T>::StartRun(void* param)
{
SuperThread<T>* mt=(SuperThread<T>*) param;
T *t1=mt->t;
void (T::*f1)();
f1=mt->f;
SuperThread<T>::isOk=true;
(t1->*f1)();
return 0;
}
MySocket.h
#include "SuperSocket.h"
class MySocket:public SuperSocket
{
public:
MySocket(SOCKET* socket);
MySocket(){}
protected:
virtual void OnAccept(SOCKET* socket);
virtual void OnReceive(SuperSocket::SockData* data);
};
MySocket.cpp
1 #include "MySocket.h"
2 #include "MyThread.h"
3
4 void MySocket::OnAccept(SOCKET* socket)
5 {
6 SuperSocket* ss=new MySocket(socket);
7 //MyThread* mt=new MyThread(&ms,MySocket::RollReceive);
8 // MyThread mt;
9 // mt.InitThread(ss,&SuperSocket::RollReceive);
10 // mt.StartThread();
11 SuperThread<SuperSocket> st(ss,&SuperSocket::RollReceive);
12 st.StartThread();
13 }
14
15 MySocket::MySocket(SOCKET* socket)
16 {
17 this->tempSocket=*socket;
18 }
19
20 void MySocket::OnReceive(SuperSocket::SockData* data)
21 {
22 cout<<data->id<<endl;
23 }
main.cpp
#include<iostream>
#include<string>
#include "MySocket.h"
using namespace std;
int main()
{
MySocket ms;
ms.Connect("10.10.24.148",8010);
while(true)
{
string s;
cin>>s;
MySocket::SockData data;
data.id=0;
data.length=s.size();
data.content=s.c_str();
ms.Send(&data);
}
return 0;
}
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