C++ Socket TCP "Hello World!"

这是C++ SOCKET网络程序中的C/S结构之TCP "Hello World !"，共两个控制台工程：

//

// TCPServer.cpp

#include <stdio.h>

#include <WINSOCK2.H>

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

#define BUF_SIZE 64 // 缓冲区大小

int main(void)

{

WSADATA wsd; // WSADATA变量

SOCKET sServer; // 服务器套接字

SOCKET sClient; // 客户端套接字

int retVal; // 返回值

char buf[BUF_SIZE]; // 接受数据

// 初始化套接字动态库

ZeroMemory(buf,BUF_SIZE);

if(WSAStartup(MAKEWORD(2,2),&wsd) != 0)

{

printf("WSAStartup failed !/n");

return 1;

}

// 创建套接字

sServer = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);

if(INVALID_SOCKET == sServer)

{

printf("socket failed !/n");

WSACleanup();

return -1;

}

// 服务器套接字地址

SOCKADDR_IN addrServ;

addrServ.sin_family = AF_INET;

addrServ.sin_port = htons(4999);

addrServ.sin_addr.S_un.S_addr = htonl(INADDR_ANY);

// 绑定套接字

retVal = bind(sServer,(const struct sockaddr*)&addrServ,sizeof(SOCKADDR_IN));

if(SOCKET_ERROR == retVal)

{

printf("bind failed !/n");

closesocket(sServer);

WSACleanup();

return -1;

}

// 监听套接字

retVal = listen(sServer,1);

if(SOCKET_ERROR == retVal)

{

printf("listen failed !/n");

closesocket(sServer);

WSACleanup();

return -1;

}

// 接受客户请求

sockaddr_in addrClient;

int addrClientlen = sizeof(addrClient);

sClient = accept(sServer,(sockaddr FAR*)&addrClient,&addrClientlen);

if(INVALID_SOCKET == sClient)

{

printf("accept failed !/n");

closesocket(sServer);

WSACleanup();

return -1;

}

// 接受客户数据

retVal = recv(sClient,buf,BUFSIZ,0);

if(SOCKET_ERROR == retVal)

{

printf("recv failed !/n");

closesocket(sServer);

closesocket(sClient);

WSACleanup();

return -1;

}

// 退出程序

printf("Recv From Client:%s/n",buf);

retVal = send(sClient,"Hello World !",strlen("Hello World !"),0);

if(SOCKET_ERROR == retVal)

{

printf("send failed !/n");

closesocket(sServer);

closesocket(sClient);

WSACleanup();

return -1;

}

// 退出程序

closesocket(sServer);

closesocket(sClient);

WSACleanup();

return 0;

}

//

// TCPClient.cpp

#include <stdio.h>

#include <Winsock2.H>

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

#define BUF_SIZE 64 // 缓冲区大小

int main(void)

{

WSADATA wsd; // 初始化数据库

SOCKET sHost; // 服务器套接字

SOCKADDR_IN servAddr; // 服务器地址

char buf[BUF_SIZE]; // 接受数据缓冲区

int retVal; // 返回值

if(WSAStartup(MAKEWORD(2,2),&wsd) != 0)

{

printf("WSAStartup failed !/n");

return 1;

}

// 创建套接字

sHost = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);

if(INVALID_SOCKET == sHost)

{

printf("socket failed !/n");

WSACleanup();

return -1;

}

// 设置服务器地址

servAddr.sin_family = AF_INET;

servAddr.sin_addr.S_un.S_addr = inet_addr("192.168.1.254");

servAddr.sin_port = htons(4999);

int sServerAddlen = sizeof(servAddr);

// 连接服务器

retVal = connect(sHost,(LPSOCKADDR)&servAddr,sizeof(servAddr));

if(SOCKET_ERROR == retVal)

{

printf("connect failed !/n");

closesocket(sHost);

WSACleanup();

}

// 向服务器发送数据

ZeroMemory(buf,BUF_SIZE);

strcpy(buf,"Hello World !");

retVal = send(sHost,buf,strlen(buf),0);

if(SOCKET_ERROR == retVal)

{

printf("send failed !/n");

closesocket(sHost);

WSACleanup();

return -1;

}

// 向服务器接受数据

retVal = recv(sHost,buf,sizeof(buf)+1,0);

printf("Recv From Server: %s/n",buf);

// 退出程序

closesocket(sHost);

WSACleanup();

return 0;

}

程序运行效果：

源代码下载地址：

http://download.csdn.net/source/1667113

http://www.rayfile.com/files/79dbe03a-a1fe-11de-83dd-0014221b798a/