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| #include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
#include <stdlib.h>
#include <cassert>
#include <sys/epoll.h>
#include "locker.h"
#include "threadpool.h"
#include "http_conn.h"
#define MAX_FD 65536
#define MAX_EVENT_NUMBER 10000
extern int addfd(int epollfd, int fd, bool one_shot);
extern int removefd(int epollfd, int fd);
void addsig(int sig, void(handler)(int), bool restart = true)
{
struct sigaction sa;
memset(&sa, '\0', sizeof(sa));
sa.sa_handler = handler;
if (restart)
{
sa.sa_flags |= SA_RESTART;
}
sigfillset(&sa.sa_mask);
assert(sigaction(sig, &sa, NULL) != -1);
}
void show_error(int connfd, const char* info)
{
printf("%s", info);
send(connfd, info, strlen(info), 0);
close(connfd);
}
int main(int argc, char* argv[])
{
if (argc <= 2)
{
printf("usage: %s ip_address port_number\n", basename(argv[0]));
return 1;
}
const char* ip = argv[1];
int port = atoi(argv[2]);
addsig(SIGPIPE, SIG_IGN);
threadpool< http_conn >* pool = NULL;
try
{
pool = new threadpool< http_conn >;
}
catch (...)
{
return 1;
}
http_conn* users = new http_conn[MAX_FD];
assert(users);
int user_count = 0;
int listenfd = socket(PF_INET, SOCK_STREAM, 0);
assert(listenfd >= 0);
struct linger tmp = { 1, 0 };
setsockopt(listenfd, SOL_SOCKET, SO_LINGER, &tmp, sizeof(tmp));
int ret = 0;
struct sockaddr_in address;
bzero(&address, sizeof(address));
address.sin_family = AF_INET;
inet_pton(AF_INET, ip, &address.sin_addr);
address.sin_port = htons(port);
ret = bind(listenfd, (struct sockaddr*)&address, sizeof(address));
assert(ret >= 0);
ret = listen(listenfd, 5);
assert(ret >= 0);
epoll_event events[MAX_EVENT_NUMBER];
int epollfd = epoll_create(5);
assert(epollfd != -1);
addfd(epollfd, listenfd, false);
http_conn::m_epollfd = epollfd;
while (true)
{
int number = epoll_wait(epollfd, events, MAX_EVENT_NUMBER, -1);
if ((number < 0) && (errno != EINTR))
{
printf("epoll failure\n");
break;
}
for (int i = 0; i < number; i++)
{
int sockfd = events[i].data.fd;
if (sockfd == listenfd)
{
struct sockaddr_in client_address;
socklen_t client_addrlength = sizeof(client_address);
int connfd = accept(listenfd, (struct sockaddr*)&client_address, &client_addrlength);
if (connfd < 0)
{
printf("errno is: %d\n", errno);
continue;
}
if (http_conn::m_user_count >= MAX_FD)
{
show_error(connfd, "Internal server busy");
continue;
}
users[connfd].init(connfd, client_address);
}
else if (events[i].events & (EPOLLRDHUP | EPOLLHUP | EPOLLERR))
{
users[sockfd].close_conn();
}
else if (events[i].events & EPOLLIN)
{
if (users[sockfd].read())
{
pool->append(users + sockfd);
}
else
{
users[sockfd].close_conn();
}
}
else if (events[i].events & EPOLLOUT)
{
if (!users[sockfd].write())
{
users[sockfd].close_conn();
}
}
else
{
}
}
}
close(epollfd);
close(listenfd);
delete[] users;
delete pool;
return 0;
}
|