client.c:

1 //Client.cpp 2 #include "StdAfx.h" 3 #include 
     
       4 #include 
      
        5 #include 
       
         6 #pragma comment(lib,"ws2_32.lib") 7 int main(int argc, char* argv[]){ 8     //判断是否输入了IP地址和端口号 9     if(argc!=3){10         printf("Usage: %s IPAddress PortNumber/n",argv[0]);11         exit(-1);12     }13     //把字符串的IP地址转化为u_long14     unsigned long ip;15     if((ip=inet_addr(argv[1]))==INADDR_NONE){16         printf("不合法的IP地址：%s",argv[1]);17         exit(-1);18     }19     //把端口号转化成整数20     short port;21     if((port = atoi(argv[2]))==0){22         printf("端口号有误！");23         exit(-1);24     }25     printf("Connecting to %s:%d....../n",inet_ntoa(*(in_addr*)&ip),port);26     WSADATA wsa;27     //初始化套接字DLL28     if(WSAStartup(MAKEWORD(2,2),&wsa)!=0){29         printf("套接字初始化失败!");30         exit(-1);31     }32     //创建套接字33     SOCKET sock;34     if((sock=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==INVALID_SOCKET){35         printf("创建套接字失败！");36         exit(-1);37     }38     struct sockaddr_in serverAddress;39     memset(&serverAddress,0,sizeof(sockaddr_in));40     serverAddress.sin_family=AF_INET;41     serverAddress.sin_addr.S_un.S_addr = ip;42     serverAddress.sin_port = htons(port);43     //建立和服务器的连接44     if(connect(sock,(sockaddr*)&serverAddress,sizeof(serverAddress))==SOCKET_ERROR){45         printf("建立连接失败！");46         exit(-1);47     }48     char buf[4096];49    // while(1){
    50     {51         //printf(">");52         //从控制台读取一行数据53         //gets(buf);54         //发送给服务器55        if(send(sock,"wangkangluo1",strlen(buf),0)==SOCKET_ERROR){56             printf("发送数据失败！");57             exit(-1);58         }59        int bytes;60         if((bytes=recv(sock,buf,sizeof(buf),0))==SOCKET_ERROR){61             printf("接收数据失败!/n");62             exit(-1);63         }64         buf[bytes]='/0';65         printf("Message from %s: %s/n",inet_ntoa(serverAddress.sin_addr),buf);66     }67     //清理套接字占用的资源68     WSACleanup();69     return 0;70 }
       
      
     

 

server.c:

1 // reboot3.cpp : 定义控制台应用程序的入口点。 2 // 3  4 #include "stdafx.h" 5  6 //Server.cpp 7 #include 
     
       8 #include 
      
        9 #include 
       
        10 #pragma comment(lib,"ws2_32.lib")11 int main(int argc, char* argv[]){12     //判断是否输入了端口号13     if(argc!=2){14         printf("Usage: %s PortNumber/n",argv[0]);15         exit(-1);16     }17     //把端口号转化成整数18     short port;19     if((port = atoi(argv[1]))==0){20         printf("端口号有误！");21         exit(-1);22     }23     WSADATA wsa;24     //初始化套接字DLL25     if(WSAStartup(MAKEWORD(2,2),&wsa)!=0){26         printf("套接字初始化失败!");27         exit(-1);28     }29     //创建套接字30     SOCKET serverSocket;31     if((serverSocket=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==INVALID_SOCKET){32         printf("创建套接字失败！");33         exit(-1);34     }35     struct sockaddr_in serverAddress;36     memset(&serverAddress,0,sizeof(sockaddr_in));37     serverAddress.sin_family=AF_INET;38     serverAddress.sin_addr.S_un.S_addr = htonl(INADDR_ANY);39     serverAddress.sin_port = htons(port);40     //绑定41     if(bind(serverSocket,(sockaddr*)&serverAddress,sizeof(serverAddress))==SOCKET_ERROR){42         printf("套接字绑定到端口失败！端口: %d/n",port);43         exit(-1);44     }45     //进入侦听状态46     if(listen(serverSocket,SOMAXCONN)==SOCKET_ERROR){47         printf("侦听失败！");48         exit(-1);49     }50     printf("Server %d is listening....../n",port);51     SOCKET clientSocket;//用来和客户端通信的套接字52     struct sockaddr_in clientAddress;//用来和客户端通信的套接字地址53     memset(&clientAddress,0,sizeof(clientAddress));54     int addrlen = sizeof(clientAddress);55     //接受连接56     if((clientSocket=accept(serverSocket,(sockaddr*)&clientAddress,&addrlen))==INVALID_SOCKET){57         printf("接受客户端连接失败！");58         exit(-1);59     }60     printf("Accept connection from %s/n",inet_ntoa(clientAddress.sin_addr));61     char buf[4096];62     while(1){63         //接收数据64         int bytes;65         if((bytes=recv(clientSocket,buf,sizeof(buf),0))==SOCKET_ERROR){66             printf("接收数据失败!/n");67             exit(-1);68         }69         buf[bytes]='/0';70         printf("Message from %s: %s/n",inet_ntoa(clientAddress.sin_addr),buf);71         if(send(clientSocket,buf,bytes,0)==SOCKET_ERROR){72             printf("发送数据失败！");73             exit(-1);74         }75     }76     //清理套接字占用的资源77     WSACleanup();78     return 0;79 }
       
      
     

 

完