TCP并发服务器模型（三）

本篇博客讲述的是单客户端单线程模型，该模型同样由主进程统一accept，只是将fork改为了pthread_create。

与进程相比，线程有很多优点（速度快，占用资源少，数据可以共享），

该模型结构如图所示：



与上一篇博客讲述的模型非常类似，源代码同上一篇相比只有少量更改而已，亦不讲解。

服务器端代码如下：

/*
author:arvik
purpose:test the server simultaneity
email:1216601195@qq.com
csdn: http://blog.csdn.net/u012819339 */

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <time.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <arpa/inet.h>
#include <pthread.h>

#define BUFFLEN 1024
#define SERVER_PORT 8887
#define BACKLOG 3

static void handle_request(void *argv)
{
int s_c = *((int *)argv);
char buff[BUFFLEN];
int n = 0;

memset(buff, 0, sizeof(buff));
n = recv(s_c, buff, BUFFLEN, 0);

if(n>0)
{
printf("receive msg from client: %s\n", buff);
}

close(s_c);
}

static int handle_connect(int s_s)
{
int s_c;
struct sockaddr_in from;
socklen_t len = sizeof(from);
pthread_t thread_do;

while(1)
{
s_c = accept(s_s, (struct sockaddr*)&from, &len); //block
if(s_c>0)
{
pthread_create(&thread_do, NULL, (void*)handle_request, &s_c);
}
}
}

int main()
{
int s_s;
struct sockaddr_in local;

s_s = socket(AF_INET, SOCK_STREAM, 0);

memset(&local, 0, sizeof(local));
local.sin_family = AF_INET;
local.sin_addr.s_addr = inet_addr("127.0.0.1");//htonl(INADDR_ANY);
local.sin_port = htons(SERVER_PORT);

if(bind(s_s, (struct sockaddr*)&local, sizeof(local)))
{
printf("bind socket failed!\n");
return -1;
}

listen(s_s, BACKLOG);

handle_connect(s_s);

close(s_s);

return 0;
}

客户端代码不变。见上一篇博客！