TCP多线程并发问题
//服务器端
//服务器可以接收多个客户端,并打印客户端信息(线程)
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include<signal.h>
#include<pthread.h>
#define SER_PORT 8888
#define SER_IP "192.168.7.84"
void sys_error(char * ch)
{
perror(ch);
exit(1);
}
/*线程执行函数*/
void *pthread_1(void*arg)
{
int newfd1=*(int*)arg;
char buf[128]=" ";
int ret;
while(1)
{
bzero(buf,128);
ret=read(newfd1,buf,128);
if(ret<0)
sys_error("read failed");
else if(ret == 0)
{
break;
}
else
printf("Data From client:%s",buf);
}
close(newfd1);
pthread_exit(NULL);
return NULL;
}
int main(void)
{
char buf[128];
int serfd,ret;
pid_t pid;
/*1.建立流式套接字*/
serfd = socket(AF_INET,SOCK_STREAM,0);
if(serfd < 0)
sys_error("socket failed");
/*2.绑定本地ip和端口*/
struct sockaddr_in ser;
bzero(&ser,sizeof(ser));
ser.sin_family = AF_INET;//选择IPV4
ser.sin_port = htons(SER_PORT);//填充端口
ser.sin_addr.s_addr = inet_addr(SER_IP);//填充IP
ret=bind(serfd,(struct sockaddr *)&ser,sizeof(ser));
if(ret < 0)
sys_error("bind failed");
/*3.监听*/
ret=listen(serfd,5);
if(ret < 0)
sys_error("listen failed");
printf("listent ok\n");
/*创建子线程,子线程处理每个客户端,主线程不处理具体数据*/
while(1)
{
/*4.接收数据*/
struct sockaddr_in self;
bzero(&self,sizeof(self));
int len=sizeof(self);
int newfd=accept(serfd,(struct sockaddr *)&self,&len);
if(newfd < 0)
sys_error("accept failed");
/*打印客户端的IP和端口号*/
printf("The client has been online:IP:%s PORT:%d\n\n",inet_ntoa(self.sin_addr),ntohs(self.sin_port));
//char * inet_ntoa(stuct in_addr inaddr);
/*创建子线程*/
pthread_t tid;
pthread_create(&tid,NULL,pthread_1,(void*)&newfd);
/*阻塞等待子线程结束,回收子线程结束物理内存*/
pthread_join(tid,NULL);
/*客户端退出提示信息*/
//fprintf(stdout,"The client has been offline:%s PORT:%d\n",inet_ntoa(self.sin_addr),ntohs(self.sin_port));
return 0;
}
/*6.关闭*/
pthread_exit(NULL);
close(serfd);
return 0;
}
问题:多线程并发,现在只能一个客户端输入数据,服务器能显示数据,大神帮忙看一下,谢谢!