C++ UDP C/S 简单封装（转载）

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Server端类定义：

#include<Winsock2.h>#pragmacomment(lib, "ws2_32.lib") class UDPServer{private:    WSADATA wsaData;    SOCKET serverSocket;    sockaddr_in serverSockAddr;public:    UDPServer();    void setSockAddr(const char *destAddr,const int destPort);    void listen(const int port);    void receive() const;    ~UDPServer();};

Server端实现：

#include"UDPServer.h"#include<iostream> using namespacestd; UDPServer::UDPServer(){    WSAStartup(MAKEWORD(2, 2), &wsaData);    serverSocket = socket(AF_INET, SOCK_DGRAM,IPPROTO_UDP);    cout << "Server Socketinitialized" << endl;} voidUDPServer::listen(const int port){    serverSockAddr.sin_family=AF_INET;    serverSockAddr.sin_port=htons(port);   serverSockAddr.sin_addr.s_addr=htonl(INADDR_ANY);    bind(serverSocket, (SOCKADDR*)&serverSockAddr, sizeof(serverSockAddr));} voidUDPServer::receive() const{    char buf[1024];    int serverSockAddrSize =sizeof(serverSockAddr);    recvfrom(serverSocket, buf, sizeof(buf), 0,(SOCKADDR *)&serverSockAddr, &serverSockAddrSize);    cout << buf << endl;} UDPServer::~UDPServer(){    closesocket(serverSocket);    WSACleanup();    cout << "Server Socketreleased" << endl;}

Client端类定义：

#include<Winsock2.h>#pragmacomment(lib, "ws2_32.lib") class UDPClient{private:    WSADATA wsaData;    SOCKET clientSocket;    sockaddr_in clientSockAddr;public:    UDPClient();    void setSockAddr(const char *destAddr,const int destPort);    void sendData(const char *buf, const intlen) const;    ~UDPClient();};

Client端实现：

#include"udpClient.h"#include<iostream> using namespacestd; UDPClient::UDPClient(){    WSAStartup(MAKEWORD(2, 2), &wsaData);    clientSocket = socket(AF_INET, SOCK_DGRAM,IPPROTO_UDP);    cout << "Client Socketinitialized" << endl;} UDPClient::~UDPClient(){    closesocket(clientSocket);    WSACleanup();    cout << "Client Socketreleased" << endl;} voidUDPClient::setSockAddr(const char *destAddr, const int destPort){    clientSockAddr.sin_family = AF_INET;    clientSockAddr.sin_port = htons(destPort);    clientSockAddr.sin_addr.s_addr =inet_addr(destAddr);} voidUDPClient::sendData(const char *buf, const int len) const{    sendto(clientSocket, buf, len, 0, (SOCKADDR*)&clientSockAddr, sizeof(clientSockAddr));}

Server端调用：

UDPServer* server =new UDPServer;server->listen(4000);for (int i = 0; i< 20; i++){    server->receive();}delete server;

Client端调用：

const char*destAddr = "XXX.XXX.XXX.XXX";const int destPort= 4000;const charbuf[1024] = "This is a udp test message";   UDPClient* client =new UDPClient;client->setSockAddr(destAddr,destPort);for (int i = 0; i< 10; i++){    client->sendData(buf, sizeof(buf));} delete client;

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