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/*
* nghttp2 - HTTP/2 C Library
*
* Copyright (c) 2014 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "shrpx_accept_handler.h"
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif // HAVE_UNISTD_H
#include <cerrno>
#include "shrpx_connection_handler.h"
#include "shrpx_config.h"
#include "shrpx_log.h"
#include "util.h"
using namespace nghttp2;
namespace shrpx {
namespace {
void acceptcb(struct ev_loop *loop, ev_io *w, int revent) {
auto h = static_cast<AcceptHandler *>(w->data);
h->accept_connection();
}
} // namespace
AcceptHandler::AcceptHandler(const UpstreamAddr *faddr, ConnectionHandler *h)
: conn_hnr_(h), faddr_(faddr) {
ev_io_init(&wev_, acceptcb, faddr_->fd, EV_READ);
wev_.data = this;
ev_io_start(conn_hnr_->get_loop(), &wev_);
}
AcceptHandler::~AcceptHandler() {
ev_io_stop(conn_hnr_->get_loop(), &wev_);
close(faddr_->fd);
}
void AcceptHandler::accept_connection() {
sockaddr_union sockaddr;
socklen_t addrlen = sizeof(sockaddr);
#ifdef HAVE_ACCEPT4
auto cfd =
accept4(faddr_->fd, &sockaddr.sa, &addrlen, SOCK_NONBLOCK | SOCK_CLOEXEC);
#else // !HAVE_ACCEPT4
auto cfd = accept(faddr_->fd, &sockaddr.sa, &addrlen);
#endif // !HAVE_ACCEPT4
if (cfd == -1) {
switch (errno) {
case EINTR:
case ENETDOWN:
case EPROTO:
case ENOPROTOOPT:
case EHOSTDOWN:
#ifdef ENONET
case ENONET:
#endif // ENONET
case EHOSTUNREACH:
case EOPNOTSUPP:
case ENETUNREACH:
return;
case EMFILE:
case ENFILE:
LOG(WARN) << "acceptor: running out file descriptor; disable acceptor "
"temporarily";
conn_hnr_->sleep_acceptor(get_config()->conn.listener.timeout.sleep);
return;
default:
return;
}
}
#ifndef HAVE_ACCEPT4
util::make_socket_nonblocking(cfd);
util::make_socket_closeonexec(cfd);
#endif // !HAVE_ACCEPT4
conn_hnr_->handle_connection(cfd, &sockaddr.sa, addrlen, faddr_);
}
void AcceptHandler::enable() { ev_io_start(conn_hnr_->get_loop(), &wev_); }
void AcceptHandler::disable() { ev_io_stop(conn_hnr_->get_loop(), &wev_); }
int AcceptHandler::get_fd() const { return faddr_->fd; }
} // namespace shrpx
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