上代码
服务端Server
#include <stdio.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netinet/in.h>#define _PORT_ 9999
#define _BACKLOG_ 10int main()
{int sock=socket(AF_INET,SOCK_STREAM,0);if(sock<0){printf("socket()\n");}struct sockaddr_in server_socket;struct sockaddr_in socket;bzero(&server_socket,sizeof(server_socket));server_socket.sin_family=AF_INET;server_socket.sin_addr.s_addr=htonl(INADDR_ANY);server_socket.sin_port=htons(_PORT_);if(bind(sock,(struct sockaddr*)&server_socket,sizeof(struct sockaddr_in))<0){printf("bind()\n");close(sock);return 1;}if(listen(sock,_BACKLOG_)<0){printf("listen()\n");close(sock);return 2;}printf("success\n");for(;;){socklen_t len=0;int client_sock=accept(sock,(struct sockaddr*)&socket,&len);if(client_sock<0){printf("accept()\n");return 3;}char buf_ip[INET_ADDRSTRLEN];memset(buf_ip,'\0',sizeof(buf_ip));inet_ntop(AF_INET,&socket.sin_addr,buf_ip,sizeof(buf_ip));printf("get connect\n");while(1){char buf[1024];memset(buf,'\0',sizeof(buf));read(client_sock,buf,sizeof(buf));printf("client:# %s\n",buf);printf("server:$ ");memset(buf,'\0',sizeof(buf));fgets(buf,sizeof(buf),stdin);buf[strlen(buf)-1]='\0';if(strncasecmp(buf,"quit",4)==0){printf("quit\n");break;}write(client_sock,buf,strlen(buf)+1);printf("wait...\n");}close(client_sock);}close(sock);return 0;
}
客户端Client
#include <strings.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <sys/types.h> /* See NOTES */
#include <sys/socket.h>
#include <netinet/ip.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <pthread.h>void *recv_data(void *arg)
{int sockfd = *(int *)arg;char s[64] = {0};while(1){int ret = read(sockfd, s, 64);if(ret < 0){perror("read");return NULL;}printf("%s\n", s);memset(s, 0, 64);}
}int main(int argc, char *argv[])
{int sockfd = socket(AF_INET, SOCK_STREAM, 0);if(sockfd == -1){perror("socket");return -1;}pthread_t pid;pthread_create(&pid, NULL, recv_data, (void *)&sockfd);pthread_detach(pid);struct sockaddr_in ser;ser.sin_family = AF_INET;ser.sin_port = htons(11111);//ser.sin_addr.s_addr = inet_addr("0.0.0.0");ser.sin_addr.s_addr = htonl(INADDR_ANY);int ret = connect(sockfd, (struct sockaddr *)&ser, sizeof(ser));if(ret == -1){perror("connect");return -1;}char buf[64];while(1){fgets(buf, 64, stdin);buf[strlen(buf)-1] = '\0';write(sockfd, buf, 64);if(strcmp(buf, "time") == 0){char data[64];read(sockfd, data, 64);printf(">>:%s\n", data);memset(buf, 0, 64);memset(data, 0, 64); } else if(strncmp(buf, "get", 3) == 0) {char str[64];while(read(sockfd, str, 64) != 0) {if(strcmp(str, "over") == 0) {memset(str, 0, 64); break;}printf(">>:%s\n", str);memset(buf, 0, 64);memset(str, 0, 64); }} else { char arr[64] = {0};read(sockfd, arr, 64);printf(">>:%s\n", arr);memset(buf, 0, 64);memset(arr, 0, 64); }}close(sockfd);return 0;
}
)
