linux epollの簡単な例
2176 ワード
通常、サービス側のみ、テスト用telnet.
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define MAX_FD_NUM 20
#define MAX_BUF_LEN 1024
int main(int argc,char* argv[])
{
if(argc!=2)
{
printf("Usage:%s[port]
",argv[0]);
return -1;
}
//
int portNumber = atoi(argv[1]);
int epfd,listenfd,connfd,nfds;
socklen_t clilen;
//
struct sockaddr_in clientaddr;
bzero(&clientaddr,sizeof(clientaddr));
struct sockaddr_in serveraddr;
bzero(&serveraddr,sizeof(serveraddr));
serveraddr.sin_family = AF_INET;
inet_pton(AF_INET,"127.0.0.1",&serveraddr.sin_addr);
serveraddr.sin_port = htons(portNumber);
//
listenfd = socket(PF_INET,SOCK_STREAM,0);
int ret = bind(listenfd,(struct sockaddr*)(&serveraddr),sizeof(serveraddr));
if(ret < 0)
{
perror("bind");
return 1;
}
int lret = listen(listenfd,MAX_FD_NUM-1);
if(lret < 0)
{
perror("listen");
return 1;
}
// epoll
struct epoll_event ev;
struct epoll_event events[MAX_FD_NUM];
epfd = epoll_create(MAX_FD_NUM);
if(epfd < 0)
{
perror("epoll_create");
}
ev.data.fd = listenfd;
ev.events = EPOLLIN;//model LT
epoll_ctl(epfd,EPOLL_CTL_ADD,listenfd,&ev);
char buf[MAX_BUF_LEN]={0};
while(1)
{
nfds = epoll_wait(epfd,events,MAX_FD_NUM,-1);
if(nfds < 0)
{
perror("epoll_wait");
break;
}
printf("nfds:%d
",nfds);
for(int i=0;i