在公司里面,我们平时使用的机器一般都是windows系统,但是开发、编译的机器往往是linux服务器。通过ping、ftp、samba、 telnet、ssh,人们可以很方便与服务器连接。windows系统使用的是windows socket,而linux使用的posix socket,那么这两个socket之间是怎么通信的呢?网上关于windows与windows通信的代码很多,linux与linux通信的代码也 很多,但是windows和linux通信的代码很少。这里,我就想写一个简单的socket代码,实现linux和windows的通信。
其实,广义一点看,网页访问、邮箱、游戏、聊天工具都是利用socket实现的,当然后面实现的逻辑要比我们写的代码复杂的多。但是,我们完全可以利用简 单的代码来说明socket通信问题,能做到这一点就足够了。这也是我一直推崇的方法,用最简单的代码表达最实际的功能。
windows侧的client代码,
#includelinux侧的server代码,#include #pragma comment(lib,"ws2_32.lib")#define PORT 4000#define IP_ADDRESS "192.168.1.102" int main(int argc, char* argv[]){ WSADATA Ws; SOCKET ClientSocket; struct sockaddr_in ClientAddr; int Ret = 0; char SendBuffer[MAX_PATH]; /* Init Windows Socket */ if ( WSAStartup(MAKEWORD(2,2), &Ws) != 0 ) { printf("Init Windows Socket Failed::%d\n", GetLastError()); return -1; } /* Create Socket */ ClientSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if ( ClientSocket == INVALID_SOCKET ) { printf("Create Socket Failed::%d\n", GetLastError()); return -1; } ClientAddr.sin_family = AF_INET; ClientAddr.sin_addr.s_addr = inet_addr(IP_ADDRESS); ClientAddr.sin_port = htons(PORT); memset(ClientAddr.sin_zero, 0x00, 8); /* connect socket */ Ret = connect(ClientSocket,(struct sockaddr*)&ClientAddr, sizeof(ClientAddr)); if ( Ret == SOCKET_ERROR ) { printf("Connect Error::%d\n", GetLastError()); return -1; } else { printf("Connect succedded!\n"); } while (1) { scanf("%s", SendBuffer); /* send data to server */ Ret = send(ClientSocket, SendBuffer, (int)strlen(SendBuffer), 0); if ( Ret == SOCKET_ERROR ) { printf("Send Info Error::%d\n", GetLastError()); break; } if('q' == SendBuffer[0]) { break; } } /* close socket */ closesocket(ClientSocket); WSACleanup(); return 0; }
#includewindows侧的代码使用vc6.0编译就可以,而linux侧的代码用gcc就ok了,即gcc server.c -o server。首先,在linux侧输入./server,然后打开widnows侧的client程序,然后在windows侧的每一个字符输入都会在 linux打印出来。如果想退出,输入q即可。但是此时server不会退出,它在等待下一个client的通信,继续服务于大家,就是这么简单。#include #include #include #include #include #define HELLO_WORLD_SERVER_PORT 4000#define LENGTH_OF_LISTEN_QUEUE 20#define BUFFER_SIZE 1024int main(int argc, char **argv){ struct sockaddr_in server_addr; int server_socket; int opt = 1; bzero(&server_addr,sizeof(server_addr)); server_addr.sin_family = AF_INET; server_addr.sin_addr.s_addr = htons(INADDR_ANY); server_addr.sin_port = htons(HELLO_WORLD_SERVER_PORT); /* create a socket */ server_socket = socket(PF_INET,SOCK_STREAM,0); if( server_socket < 0) { printf("Create Socket Failed!"); exit(1); } /* bind socket to a specified address*/ setsockopt(server_socket, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)); if( bind(server_socket,(struct sockaddr*)&server_addr,sizeof(server_addr))) { printf("Server Bind Port : %d Failed!", HELLO_WORLD_SERVER_PORT); exit(1); } /* listen a socket */ if(listen(server_socket, LENGTH_OF_LISTEN_QUEUE)) { printf("Server Listen Failed!"); exit(1); } /* run server */ while (1) { struct sockaddr_in client_addr; int client_socket; socklen_t length; char buffer[BUFFER_SIZE]; /* accept socket from client */ length = sizeof(client_addr); client_socket = accept(server_socket, (struct sockaddr*)&client_addr, &length); if( client_socket < 0) { printf("Server Accept Failed!\n"); break; } /* receive data from client */ while(1) { bzero(buffer, BUFFER_SIZE); length = recv(client_socket, buffer, BUFFER_SIZE, 0); if (length < 0) { printf("Server Recieve Data Failed!\n"); break; } if('q' == buffer[0]) { printf("Quit from client!\n"); break; } printf("%s\n", buffer); } close(client_socket); } close(server_socket); return 0;}
这里的server和client代码是根据网友的代码修改而来,一并表示感谢。如有侵权,请邮件告知。
转自:http://blog.csdn.net/feixiaoxing/article/details/8567162