windows的socket_tcp服务端与linux的socket_tcp客服端简单通讯

windows的socket_tcp服务端代码如下：

#include <stdio.h>
#include <Winsock2.h>
#pragma comment(lib,"ws2_32")
#include <windows.h>
int main()
{
WORD wVersionRequested;
WSADATA wsaData;
int err;

wVersionRequested = MAKEWORD( 1, 1 );

err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 ) {
return;
}

if ( LOBYTE( wsaData.wVersion ) != 1 ||
HIBYTE( wsaData.wVersion ) != 1 ) {
WSACleanup( );
return;
}
SOCKET sockClient=socket(AF_INET,SOCK_STREAM,0);

SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");
addrSrv.sin_family=AF_INET;
addrSrv.sin_port=htons(1234);
connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));
send(sockClient,"hello",strlen("hello")+1,0);
char recvBuf[50];
recv(sockClient,recvBuf,50,0);
printf("%s\n",recvBuf);
closesocket(sockClient);
WSACleanup();
}

linux的socket_tcp客服端代码如下：

#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <netdb.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>

#define portnumber 1234

int main(int argc, char *argv[])
{
int sockfd;
char buffer[1024];
struct sockaddr_in server_addr;
struct hostent *host;

/* 使用hostname查询host 名字 */
if(argc!=2)
{
fprintf(stderr,"Usage:%s hostname \a\n",argv[0]);
exit(1);
}

if((host=gethostbyname(argv[1]))==NULL)
{
fprintf(stderr,"Gethostname error\n");
exit(1);
}

/* 客户程序开始建立 sockfd描述符 */
if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1) // AF_INET:Internet;SOCK_STREAM:TCP
{
fprintf(stderr,"Socket Error:%s\a\n",strerror(errno));
exit(1);
}

/* 客户程序填充服务端的资料 */
bzero(&server_addr,sizeof(server_addr)); // 初始化,置0
server_addr.sin_family=AF_INET;          // IPV4
server_addr.sin_port=htons(portnumber);  // (将本机器上的short数据转化为网络上的short数据)端口号
server_addr.sin_addr=*((struct in_addr *)host->h_addr); // IP地址

/* 客户程序发起连接请求 */
if(connect(sockfd,(struct sockaddr *)(&server_addr),sizeof(struct sockaddr))==-1)
{
fprintf(stderr,"Connect Error:%s\a\n",strerror(errno));
exit(1);
}

/* 连接成功了 */
printf("Please input char:\n");

/* 发送数据 */
fgets(buffer,1024,stdin);
write(sockfd,buffer,strlen(buffer));
/* 结束通讯 */
close(sockfd);
exit(0);
}

1、先执行windows上的服务端

2、编译出客服端gcc client.cpp -o client

3、执行 ./client 10.1.1.124

4、发一串字符串过去，windows上的server端接收到数据。over......