TCP多进程并发服务器?
#include <stdio.h>
#include "/home/ubuntu/head.h"
#define IP "192.168.124.85"
#define PORT 8888
void handler(int sig)
{
while(waitpid(-1,NULL,WNOHANG)>0);
}
int main(int argc, const char *argv[])
{
//回收僵尸进程
if(signal(17,handler) == SIG_ERR)
{
ERR_MSG("signal");
return -1;
}
//创建流式套接字
int sfd=socket(AF_INET,SOCK_STREAM,0);
if(sfd<0)
{
ERR_MSG("socket");
return -1;
}
printf("socket create success sfd=%d __%d__\n",sfd,__LINE__);
//允许端口快速被复用---监测端口号是否真的有进程在占用,如果没有,则快速复用
int reuse = 1;
if(setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse)) < 0)
{
ERR_MSG("setsockopt");
return -1;
}
printf("允许端口快速复用成功\n");
//定义并填充地址信息结构体,给服务绑定使用
//真实的地址信息结构体根据地址族指定
struct sockaddr_in sin;
sin.sin_family = AF_INET;
sin.sin_port = htons(PORT);
sin.sin_addr.s_addr =inet_addr(IP);
//绑定服务器自身的地址信息
if(bind(sfd,(struct sockaddr*)&sin,sizeof(sin))<0)
{
ERR_MSG("binf");
return -1;
}
printf("bind success __%d__\n",__LINE__);
//讲套接字设置为被动接听状态
if(listen(sfd,128)<0)
{
ERR_MSG("listen");
return -1;
}
printf("listen success __%d__\n",__LINE__);
struct sockaddr_in cin;
socklen_t addrlen = sizeof(cin);
while(1)
{
//获取连接成功的客户端信息,生成一个新的套接字
int newfd = accept(sfd,(struct sockaddr*)&cin,&addrlen);
if(newfd<0)
{
ERR_MSG("accept");
return -1;
}
printf("newfd=%d 客服端连接成功 __%d__\n",newfd,__LINE__);
//创建父子进程
pid_t cpid = fork();
if(cpid<0)
{
ERR_MSG("recv");
return -1;
}
else if(0 == cpid)
{
char buf[128]="";
ssize_t res;
while(1)
{
//接受客服端数据
res = recv(newfd,buf,sizeof(buf),0);
if(res<0)
{
ERR_MSG("recv");
return -1;
}
else if(0 == res)
{
printf("[%s : %d]newfd=%d 客服端下线 __%d__\n",\
inet_ntoa(cin.sin_addr),ntohs(cin.sin_port),newfd,__LINE__);
break;
}
printf("[%s : %d]newfd=%d : %s __%d__\n",\
inet_ntoa(cin.sin_addr),ntohs(cin.sin_port),newfd,buf,__LINE__);
//向客户端发送数据
strcat(buf,"^_^");
if(send(newfd,buf,sizeof(buf),0)<0)
{
ERR_MSG("send");
return -1;
}
printf("send success __%d__\n",__LINE__);
}
exit(0);
}
//父进程
close(newfd);
}
return 0;
}
?TCP多线程并发服务器
#include <stdio.h>
#include "/home/ubuntu/head.h"
#define IP "192.168.124.85"
#define PORT 8888
struct climsg
{
int newfd;
struct sockaddr_in cin;
};
void* deal_cli_msg(void* arg);
int main(int argc, const char *argv[])
{
//创建流式套接字
int sfd=socket(AF_INET,SOCK_STREAM,0);
if(sfd<0)
{
ERR_MSG("socket");
return -1;
}
printf("socket create success sfd=%d __%d__\n",sfd,__LINE__);
//允许端口快速被复用---监测端口号是否真的有进程在占用,如果没有,则快速复用
int reuse = 1;
if(setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse)) < 0)
{
ERR_MSG("setsockopt");
return -1;
}
printf("允许端口快速复用成功\n");
//定义并填充地址信息结构体,给服务绑定使用
//真实的地址信息结构体根据地址族指定
struct sockaddr_in sin;
sin.sin_family = AF_INET;
sin.sin_port = htons(PORT);
sin.sin_addr.s_addr =inet_addr(IP);
//绑定服务器自身的地址信息
if(bind(sfd,(struct sockaddr*)&sin,sizeof(sin))<0)
{
ERR_MSG("binf");
return -1;
}
printf("bind success __%d__\n",__LINE__);
//讲套接字设置为被动接听状态
if(listen(sfd,128)<0)
{
ERR_MSG("listen");
return -1;
}
printf("listen success __%d__\n",__LINE__);
struct sockaddr_in cin;
socklen_t addrlen = sizeof(cin);
pthread_t tid;
struct climsg info;
while(1)
{
info.newfd = accept(sfd, (struct sockaddr*)&info.cin, &addrlen);
if(info.newfd < 0)
{
ERR_MSG("accept");
return -1;
}
if(pthread_create(&tid,NULL,deal_cli_msg,(void*)&info)!=0)
{
fprintf(stderr,"pthread_create _%d_\n", __LINE__);
return -1;
}
pthread_detach(tid);
}
//关闭
if(close(sfd) < 0)
{
ERR_MSG("close");
return -1;
}
return 0;
}
void* deal_cli_msg(void* arg) //void* arg = &info
{
int newfd = ((struct climsg*)arg)->newfd;
struct sockaddr_in cin = ((struct climsg*)arg)->cin;
char buf[128] = "";
ssize_t res = 0;
while(1)
{
bzero(buf, sizeof(buf));
//接收客户端数据
res = recv(newfd, buf, sizeof(buf), 0);
if(res < 0)
{
ERR_MSG("recv");
break;
}
else if(0 == res)
{
printf("[%s : %d] newfd=%d 客户端下线 __%d__\n", \
inet_ntoa(cin.sin_addr), ntohs(cin.sin_port), newfd, __LINE__);
break;
}
printf("[%s : %d] newfd=%d : %s __%d__\n", \
inet_ntoa(cin.sin_addr), ntohs(cin.sin_port), newfd, buf, __LINE__);
//向客户端发送数据---->//从终端获取数据
strcat(buf, "^_^");
if(send(newfd, buf, sizeof(buf), 0) < 0)
{
ERR_MSG("send");
break;
}
printf("send success __%d__\n", __LINE__);
}
close(newfd);
printf("newfd = %d被关闭\n", newfd);
pthread_exit(NULL);
}
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