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#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/epoll.h>
#include <netdb.h>
#include <errno.h>
/*
** ZABBIX
** Copyright (C) 2000-2005 SIA Zabbix
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**/
#define NUM 1000
int s;
int epfd;
struct epoll_event ev;
struct epoll_event *events;
void wait_connect()
{
int len;
char c[1024];
int retval,i,j;
printf("Waiting for connect\n");
for(;;)
{
printf("epfd [%d]\n", epfd);
printf("NUM [%d]\n", NUM);
events=malloc(NUM*sizeof(struct epoll_event));
retval = epoll_wait(epfd, events, NUM, -1);
if(retval == -1)
{
perror("epoll_wait");
printf("Retval [%d]\n", errno);
exit(-1);
}
printf("Retval [%d]\n", retval);
sleep(1);
continue;
for(i=0;i<retval;i++)
{
printf("[%d] fd [%X]\n",i,events[i].data.fd);
}
}
}
int main()
{
int len,i;
char c[1024];
char error[1024];
char ip[128]="127.0.0.1";
int port=10050;
struct hostent *hp;
struct sockaddr_in servaddr_in;
int retval;
epfd = epoll_create(NUM);
if(!epfd)
{
perror("epoll_create\n");
exit(1);
}
for(i=0;i<NUM;i++)
{
servaddr_in.sin_family=AF_INET;
hp=gethostbyname(ip);
if(hp==NULL)
{
perror("gethostbyname() failed");
}
servaddr_in.sin_addr.s_addr=((struct in_addr *)(hp->h_addr))->s_addr;
servaddr_in.sin_port=htons(port);
s=socket(AF_INET,SOCK_STREAM,0);
if(s == -1)
{
perror("socket() failed");
}
if(fcntl(s, F_SETFL, O_NONBLOCK) == -1)
{
perror("fcntl() failed\n");
exit(-1);
}
retval = connect(s,(struct sockaddr *)&servaddr_in,sizeof(struct sockaddr_in));
if(retval == 0)
{
printf("Socket connected immediately");
}
else if(retval == -1)
{
if(errno == EINPROGRESS)
{
// printf("Connection in progress\n");
}
else
{
perror("connect");
exit(-1);
}
}
// if(fcntl(s, F_SETFL, O_NONBLOCK) == -1)
// {
// perror("fcntl() failed\n");
// exit(-1);
// }
ev.events = EPOLLIN | EPOLLERR | EPOLLHUP | EPOLLOUT;
ev.data.fd = s;
if(epoll_ctl(epfd, EPOLL_CTL_ADD, s, &ev) < 0)
{
perror("epoll_ctl, adding listenfd\n");
exit(1);
}
// printf("epoll_ctl ok fd [%d]\n", s);
}
wait_connect();
}
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