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