使用BSD socket编写Windows版的网络程序

我们知道BSD Socket是标准的套接字规范，那么怎么在windows使用他们呢？

我们首先要引用<winsock2.h>和ws2_32.lib

然后，执行WSAStartup

	#ifdef _WIN32

	  WORD wVersionRequested;

	  WSADATA wsaData;

	  wVersionRequested = MAKEWORD(1, 1);

	  iStatus = WSAStartup(wVersionRequested, &wsaData);

	  if (iStatus != 0) {

		return 0;

	  }

	  if (LOBYTE(wsaData.wVersion) != 1 ||

		HIBYTE(wsaData.wVersion) != 1) {

		WSACleanup();

		return 0;

	  }

	#endif

WSAStartup函数

int WSAStartup(

  _In_   WORD wVersionRequested,

  _Out_  LPWSADATA lpWSAData

);

最后，执行关闭socket、清理工作

    #ifdef _WIN32

      closesocket(sockfd);

      WSACleanup();

    #endif

WSACleanup函数

int WSACleanup(void);

以下程序在Win7 + VC10下编译通过

客户端程序：

// prjClt.cpp : Defines the entry point for the console application.

//

/**

 * Networking program is Win version with BSD Socket

 * Client side

 *

 * Author: xiaobin

 * Date: 2013-12-12

 */

#include "stdafx.h"

#ifdef _WIN32

#include <winsock2.h>

#include <ws2tcpip.h>

#pragma comment(lib, "ws2_32.lib")

#else

#include <sys/socket.h>

#include <netinet/in.h>

#include <arpa/in.h>

#endif

#define MAXLINE 254

#define DEFAULT_PORT 3293

int main(int argc, char* argv[])

{

	int 				 sockfd;

	struct  sockaddr_in  servaddr;

	int					 iStatus;

	char				*sendBuff = "this is test message!";

	#ifdef _WIN32

	  WORD wVersionRequested;

	  WSADATA wsaData;

	  wVersionRequested = MAKEWORD(1, 1);

	  iStatus = WSAStartup(wVersionRequested, &wsaData);

	  if (iStatus != 0) {

		return 0;

	  }

	  if (LOBYTE(wsaData.wVersion) != 1 ||

		HIBYTE(wsaData.wVersion) != 1) {

		WSACleanup();

		return 0;

	  }

	#endif

	if (argc != 2)

		printf("Usage: <IPaddress>>\n");

	sockfd = socket(AF_INET, SOCK_STREAM, 0);

	if (sockfd < 0)

		printf("socket error\n");

	/* check Server address */

	// inet_pton is win version - InetPton

	if (InetPton(AF_INET, argv[1], &servaddr.sin_addr) < 0)

		printf("inet_pton error for %s", argv[1]);

	/* Set serveraddr */

	memset(&servaddr, 0, sizeof(servaddr));

	servaddr.sin_family = AF_INET;

	servaddr.sin_addr.S_un.S_addr = inet_addr(argv[1]);

	servaddr.sin_port 	= htons(DEFAULT_PORT);

	printf("%s%s%s\n", "Connecting ", argv[1], " ...");

	/* connect server */

	iStatus = connect(sockfd, (struct sockaddr *) &servaddr, sizeof(servaddr));

	if ( iStatus < 0 ) {

		closesocket(sockfd);

		printf("connect error\n");

	}

	printf("%s\n", "Writing...");

	/* Write data */

	iStatus = send(sockfd, sendBuff, (int)strlen(sendBuff), 0);

	if (iStatus < 0) {

		printf("%s\n", "write data error");

	}

	printf("%s\n", "Writed.");

	#ifdef _WIN32

      closesocket(sockfd);

      WSACleanup();

    #endif

	return 0;

}

注意：InetPton函数只能在Windows Version >=6上实现！

服务器端程序：

// prjSrv.cpp : Defines the entry point for the console application.

//

/**

 * Networking program is Win version with BSD Socket

 * Server side

 *

 * Author: xiaobin

 * Date: 2012-12-18 23:35

 */

#include "stdafx.h"

#ifdef _WIN32

#include <winsock2.h>

#pragma comment(lib, "ws2_32.lib")

#else

#include <sys/socket.h>

#include <netinet/in.h>

#include <arpa/in.h>

#endif

#define DEFAULT_BUFLEN 128

#define DEFAULT_PORT 3293

int main(int argc, char* argv[])

{

	int					srvSock, client;

	struct sockaddr_in  addrSrv;

	int					iStatus;

	int					len;

	char				buff[DEFAULT_BUFLEN];

	#ifdef _WIN32

	  WORD wVersionRequested;

	  WSADATA wsaData;

	  wVersionRequested = MAKEWORD(1, 1);

	  iStatus = WSAStartup(wVersionRequested, &wsaData);

	  if (iStatus != 0) {

		return 0;

	  }

	  if (LOBYTE(wsaData.wVersion) != 1 ||

		HIBYTE(wsaData.wVersion) != 1) {

		WSACleanup();

		return 0;

	  }

	#endif

	srvSock = socket(AF_INET, SOCK_STREAM, 0);

	addrSrv.sin_family = AF_INET;

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

	addrSrv.sin_port = htons(DEFAULT_PORT);

	bind(srvSock, (struct sockaddr *)&addrSrv, sizeof(addrSrv));

	listen(srvSock, 5);

	len = sizeof(struct sockaddr);

	while(1) {

		client = accept(srvSock, (struct sockaddr *)&addrSrv, (int *)&len);

		iStatus = recv(client, buff, DEFAULT_BUFLEN, 0);

		if (iStatus > 0)

			printf("%s\n", buff);

	}

	#ifdef _WIN32

      closesocket(client);

	  closesocket(srvSock);

      WSACleanup();

    #endif

	return 0;

}

参考文献：

1. 《Unix 网络编程系列01》 - xiaobin

2. 《Unix 网络编程系列05》 - xiaobin

3. 《网络编程client和server》 - xiaobin

4. WSAStartup - Microsoft Developer Network

5. WSACleanup - Microsoft Developer Network

6. InetPton - Microsoft Developer Network

巴特西

使用BSD socket编写Windows版的网络程序

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