linux多进程（fork）

来源：互联网发布：淘宝店铺水印笔刷编辑：程序博客网时间：2024/05/29 16:33

1、服务器端代码

#include<stdio.h>#include<sys/types.h>#include<sys/socket.h>#include<stdlib.h>#include<arpa/inet.h>#include<string.h>#include<netinet/in.h>int startup(const char *_ip,int _port){int sock = socket(AF_INET,SOCK_STREAM,0);if(sock < 0){perror("socket");exit(1);}struct sockaddr_in local;local.sin_family = AF_INET;local.sin_port = htons(_port);local.sin_addr.s_addr = inet_addr(_ip);socklen_t lenth = sizeof(local);int opt = 1;setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,&opt,sizeof(opt));if(bind(sock,(struct sockaddr*)&local,lenth) < 0){perror("bind");exit(2);}if(listen(sock,10) < 0){perror("listen");exit(3);}return sock;}static void usage(const char* proc){printf("[local_ip] [local_port]\n",proc);}int main(int argc,char *argv[]){if(argc != 3){usage(argv[0]);return 1;}int listen_sock = startup(argv[1],atoi(argv[2]));struct sockaddr_in client;socklen_t len = sizeof(client);while(1){int new_sock = accept(listen_sock,(struct sockaddr*)&client,&len);if(new_sock < 0){perror("new_sock");exit(0);}else{pid_t id = fork();if(id == 0){//childif(fork() > 0){exit(0);}close(listen_sock);char buf[1024];while(1){ssize_t s = read(new_sock,buf,sizeof(buf)-1);if(s > 0){buf[s] = 0;printf("client say# %s\n",buf);write(new_sock,buf,strlen(buf));}else if(s ==  0){perror("client quit!");break;}else{break;}}exit(0);}else{//fatherclose(new_sock);//if(fork() > 0){//exit(0);//}}}}return 0;}

2、客户端代码

#include<stdio.h>#include<sys/types.h>#include<sys/socket.h>#include<stdlib.h>#include<arpa/inet.h>#include<string.h>#include<netinet/in.h>int startup(const char *_ip,int _port){int sock = socket(AF_INET,SOCK_STREAM,0);if(sock < 0){perror("socket");exit(1);}struct sockaddr_in local;local.sin_family = AF_INET;local.sin_port = htons(_port);local.sin_addr.s_addr = inet_addr(_ip);socklen_t lenth = sizeof(local);int opt = 1;setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,&opt,sizeof(opt));if(bind(sock,(struct sockaddr*)&local,lenth) < 0){perror("bind");exit(2);}if(listen(sock,10) < 0){perror("listen");exit(3);}return sock;}static void usage(const char* proc){printf("[local_ip] [local_port]\n",proc);}int main(int argc,char *argv[]){if(argc != 3){usage(argv[0]);return 1;}int listen_sock = startup(argv[1],atoi(argv[2]));struct sockaddr_in client;socklen_t len = sizeof(client);while(1){int new_sock = accept(listen_sock,(struct sockaddr*)&client,&len);if(new_sock < 0){perror("new_sock");exit(0);}else{pid_t id = fork();if(id == 0){//childif(fork() > 0){exit(0);}close(listen_sock);char buf[1024];while(1){ssize_t s = read(new_sock,buf,sizeof(buf)-1);if(s > 0){buf[s] = 0;printf("client say# %s\n",buf);write(new_sock,buf,strlen(buf));}else if(s ==  0){perror("client quit!");break;}else{break;}}exit(0);}else{//fatherclose(new_sock);//if(fork() > 0){//exit(0);//}}}}return 0;}

3、运行结果

阅读全文

0 0