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