简单UDP服务器端和客户端(源代码)

简单UDP服务器端和客户端(源代码)

简单UDP服务器端和客户端(源代码)

博客分类：

一亩三分地

SocketWindows

Cpp代码



//客户端

Cpp代码



#include <iostream>

#include <stdio.h>

#include <windows.h>

#include <string.h>



using namespace std;



#pragma comment(lib, "WS2_32.lib")





class CInitSock

{

public:

CInitSock(int version01 = 2, int versiont02 = 2)

{

WORD sockVersion = MAKEWORD(2, 2);

WSADATA wsaData = {0};



if (WSAStartup(sockVersion, &wsaData) != 0)

{

cout << "initlization failed!" << endl;



exit(0);

}



}



~CInitSock()

{

WSACleanup();

}

};



CInitSock mysock;





int const MAX_SIZE = 1024;



int main()

{

char buffer[MAX_SIZE] = "\0";

sockaddr_in addr = {0};

int nLen = sizeof(sockaddr_in);

SOCKET s;



addr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");

addr.sin_family = AF_INET;

addr.sin_port = htons(4567);

s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);



while (true)

{

cout << "Please input send data: " << endl;

cin >> buffer;



if ((strcmp(buffer, "quit") == 0) || (strcmp(buffer, "exit")) == 0)

{

cout << "process exit...." << endl;



break;

}



sendto(s, buffer, strlen(buffer), 0, (sockaddr*)&addr, sizeof(addr));

}

}

//服务器端

Cpp代码



#include <iostream>

#include <stdio.h>

#include <windows.h>



using namespace std;



#pragma comment(lib, "WS2_32.lib")





class CInitSock

{

public:

CInitSock(int version01 = 2, int versiont02 = 2)

{

WORD sockVersion = MAKEWORD(2, 2);

WSADATA wsaData = {0};



if (WSAStartup(sockVersion, &wsaData) != 0)

{

cout << "initlization failed!" << endl;



exit(0);

}



}



~CInitSock()

{

WSACleanup();

}

};



CInitSock mysock;



int main()

{

SOCKET s = 0;

sockaddr_in sin = {0};



sin.sin_family = AF_INET;

sin.sin_port = htons(4567);

sin.sin_addr.S_un.S_addr = INADDR_ANY;



s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);



if (bind(s, (LPSOCKADDR)&sin, sizeof(sin)) == SOCKET_ERROR)

{

cout << "bind failed!" << endl;



return 0;

}



char buffer[1024] = "\0";

sockaddr_in addr = {0};

int nLen = 0;



nLen = sizeof(sockaddr_in);



cout << "------- now service start -------------" << endl;



while (true)

{

int nRecv = 0;



cout << "wait to receive data............" << endl;



nRecv = recvfrom(s, buffer, 1024, 0, (sockaddr*)&addr, &nLen);



if (nRecv > 0)

{

buffer[nRecv] = '\0';



cout << "receve buffer: " << buffer << endl;

}

}



closesocket(s);

}