lesson6 基于多线程的tcp并发服务器

1. 每条新连接的client都会抛出一个新线程处理事件

/*DATA: 2015-4-20
*AUTHOR: WJ
*DESCRIPTION: 多线程TCP服务器
* 1、int socket(int domain, int type, int protocol);
* 2、int bind(int sockfd, const struct sockaddr *addr, socklen_t addrlen);
* 3、int listen(int sockfd, int backlog);
* 4、int accept(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
* 5、read、write
*/

#include "apue.h"

#define MAX_LISTEN 10
char buf[100];
int ad[10];
struct sockaddr_in server_ip, remote_ip;

void *thread_fun(void *arg)
{
while(1)
{
printf("read data from client ; %s\n", inet_ntoa(remote_ip.sin_addr.s_addr));
read(ad[(int)arg], buf, 100);
printf("buf is %s\n", buf);
}

return NULL;
}

int main()
{
int server_len, remote_len;
pthread_t tid[10];

int err, sd;
int i=0;

sd = socket(AF_INET, SOCK_STREAM, 0);
if(sd == -1)
{
printf("create socket failed, errno is %d\n", errno);
return;
}

server_ip.sin_family = AF_INET;
server_ip.sin_port = htons(5678);
server_ip.sin_addr.s_addr = htonl(INADDR_ANY);
memset(server_ip.sin_zero, 0, 8);

err = bind(sd, (struct sockaddr *)(&server_ip), sizeof(struct sockaddr));
if(err == -1)
{
printf("bind error, errno is %d\n", errno);
close(sd);
return;
}

err = listen(sd, MAX_LISTEN);
if(err == -1)
{
printf("listen error , errno is %d\n", errno);
close(sd);
return;
}

remote_len = sizeof(struct sockaddr);

while(1)
{
ad[i] = accept(sd, (struct sockaddr *)(&remote_ip), &remote_len);
if(ad[i] == -1)
{
printf("accept error, errno is %d \n", errno);
close(sd);
return;
}

err = pthread_create(&tid[i], NULL, thread_fun, (void *)i);
if(err != 0)
{
printf("create new thread failed\n");
close(ad[i]);
}
i++;

}
close(sd);

return 0;
}