echo_server服务器多线程版本
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <memory.h>
#include <signal.h>
#include <string.h>
#include <errno.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/wait.h>
#include <sys/select.h>
#include <poll.h>
#include <pthread.h> int sockfd; void sign_handler(int signo)
{
pid_t pid;
int stat;
if(signo==SIGINT)
{
printf("echo server close\n");
close(sockfd);
exit();
}
if(signo==SIGCHLD){
printf("client close\n");
wait();
}
return;
}
void out_fd(int fd)
{
struct sockaddr_in arr;
socklen_t len=sizeof(arr);
if(getpeername(fd,(struct sockaddr*)&arr,&len)<){
perror("getpeername fail\n");
exit();
}
char ip[]; memset(&ip,,sizeof(ip));
inet_ntop(AF_INET,&arr.sin_addr.s_addr,ip,sizeof(ip));
printf("%s connected\n",ip);
}
void server_do(int fd)
{
char buffer[BUFSIZ];
while(){
printf("ready to read\n");
memset(buffer,,sizeof(buffer));
ssize_t size;
if((size=read(fd,buffer,sizeof(buffer)))<){
perror("server child read fail\n");
break;
}else if(size==){
break;
}else{
printf("number of received bytes=%ld\n",size);
buffer[size-]='\0';
printf("%s\n",buffer);
if(write(fd,buffer,size)<){
if(errno==EPIPE){
break;
}
perror("server child write fail\n");
}
}
}
}
void *doit(void *arg)
{
int fd=*((int *)arg); server_do(fd); close(fd);
return (void*);
} int main(int argc,char *argv[])
{
if(argc<)
{
printf("usage:%s <port>",argv[]);
exit();
}
//注册信号
if(signal(SIGINT,sign_handler)==SIG_ERR){
perror("signal sigint error\n");
exit();
}
if(signal(SIGCHLD,sign_handler)==SIG_ERR){
perror("signal sigint error\n");
exit();
}
/*create socket*/
sockfd=socket(AF_INET,SOCK_STREAM,);
if(sockfd<){
perror("socket create fail\n");
exit();
}
/*bind socket*/
struct sockaddr_in serveraddr;
serveraddr.sin_family=AF_INET;
serveraddr.sin_port=htons(atoi(argv[]));
serveraddr.sin_addr.s_addr=INADDR_ANY;
if(bind(sockfd,(struct sockaddr*)&serveraddr,sizeof(serveraddr))<){
perror("socket bind fail\n");
exit();
}
if(listen(sockfd,)<){
perror("socket listen fail\n");
exit();
}
//设置线程的分离属性
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr,PTHREAD_CREATE_DETACHED); int *iptr; while(){
iptr=malloc(sizeof(int)); if((*iptr=accept(sockfd,NULL,NULL))>){
out_fd(*iptr);
}
pthread_t th;
int err;
if((err=pthread_create(&th,&attr,doit,iptr))!=){
perror("pthread create fail\n");
}
pthread_attr_destroy(&attr);
}
return ;
}
echo_client客户端多线程版本
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <memory.h>
#include <signal.h>
#include <string.h>
#include <netinet/in.h>
#include <arpa/inet.h>
int sockfd; void doit(void *arg)
{
char buffer[BUFSIZ];
ssize_t size;
while((size=read(STDIN_FILENO,buffer,sizeof(buffer)))>){
buffer[size-]='\0';
write(sockfd,buffer,size);
}
shutdown(sockfd,SHUT_WR);
}
void cli_do(int sockfd)
{
char buffer[BUFSIZ];
pthread_t th;
ssize_t size; pthread_create(&th,NULL,doit,NULL);
while((size=read(sockfd,buffer,sizeof(buffer)))>){
buffer[size-]='\0';
write(STDOUT_FILENO,buffer,size);
}
}
int main(int argc,char *argv[])
{
if(argc<){
printf("usage:%s <ip><port>",argv[]);
exit();
}
/*create socket*/
sockfd=socket(AF_INET,SOCK_STREAM,);
if(sockfd<){
perror("socket create fail\n");
}
struct sockaddr_in serveraddr;
serveraddr.sin_family=AF_INET;
serveraddr.sin_port=htons(atoi(argv[]));
inet_pton(AF_INET,argv[],&serveraddr.sin_addr.s_addr);
if(connect(sockfd,(struct sockaddr*)&serveraddr,sizeof(serveraddr))<){
perror("server connect fail\n");
exit();
}
cli_do(sockfd);
close(sockfd);
return ;
}