服务端【编译：gcc server.c -o server】
#include#include #include #include #include #include #include #include #include #define MAXLINE 1024int main(int argc,char **argv){ int listenfd,connfd; struct sockaddr_in sockaddr; char buff[MAXLINE]; int n; memset(&sockaddr,0,sizeof(sockaddr)); sockaddr.sin_family = AF_INET; sockaddr.sin_addr.s_addr = htonl(INADDR_ANY); sockaddr.sin_port = htons(10004); listenfd = socket(AF_INET,SOCK_STREAM,0); bind(listenfd,(struct sockaddr *) &sockaddr,sizeof(sockaddr)); listen(listenfd,1024); printf("Please wait for the client information\n"); for(;;) { if((connfd = accept(listenfd,(struct sockaddr*)NULL,NULL))==-1) { printf("accpet socket error: %s errno :%d\n",strerror(errno),errno); continue; } n = recv(connfd,buff,MAXLINE,0); buff[n] = '\0'; printf("recv msg from client:%s",buff); close(connfd); } close(listenfd);}
客户端【编译：gcc client.c -o client 【备注：需要修改服务端地址，代码中为1.2.3.4】】
#include#include #include #include #include #include #include #include #include #define MAXLINE 1024void sendMsgToServer(char *xxx){ char *servInetAddr = "1.2.3.4"; int socketfd; struct sockaddr_in sockaddr; char recvline[MAXLINE],sendline[MAXLINE]; int n; memcpy(sendline,xxx,1000); socketfd = socket(AF_INET,SOCK_STREAM,0); memset(&sockaddr,0,sizeof(sockaddr)); sockaddr.sin_family = AF_INET; sockaddr.sin_port = htons(10004); inet_pton(AF_INET,servInetAddr,&sockaddr.sin_addr); if((connect(socketfd,(struct sockaddr*)&sockaddr,sizeof(sockaddr))) < 0 ) { printf("connect error %s errno: %d\n",strerror(errno),errno); exit(0); } printf("send message to server\n"); if((send(socketfd,sendline,strlen(sendline),0)) < 0) { printf("send mes error: %s errno : %d",strerror(errno),errno); exit(0); } close(socketfd); printf("over\n");}int main(int argc,char **argv){ char abc[1000]; while(fgets(abc,1024,stdin) != EOF){ sendMsgToServer(abc); } return 0;}
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