113 lines
3.2 KiB
C++
113 lines
3.2 KiB
C++
/*
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* nghttp2 - HTTP/2 C Library
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*
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* Copyright (c) 2021 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_quic_listener.h"
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#include "shrpx_worker.h"
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#include "shrpx_config.h"
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#include "shrpx_log.h"
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namespace shrpx {
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namespace {
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void readcb(struct ev_loop *loop, ev_io *w, int revent) {
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auto l = static_cast<QUICListener *>(w->data);
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l->on_read();
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}
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} // namespace
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QUICListener::QUICListener(const UpstreamAddr *faddr, Worker *worker)
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: faddr_{faddr}, worker_{worker} {
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ev_io_init(&rev_, readcb, faddr_->fd, EV_READ);
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rev_.data = this;
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ev_io_start(worker_->get_loop(), &rev_);
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}
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QUICListener::~QUICListener() {
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ev_io_stop(worker_->get_loop(), &rev_);
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close(faddr_->fd);
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}
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void QUICListener::on_read() {
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sockaddr_union su;
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std::array<uint8_t, 64_k> buf;
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size_t pktcnt = 0;
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iovec msg_iov{buf.data(), buf.size()};
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msghdr msg{};
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msg.msg_name = &su;
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msg.msg_iov = &msg_iov;
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msg.msg_iovlen = 1;
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uint8_t
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msg_ctrl[CMSG_SPACE(sizeof(uint8_t)) + CMSG_SPACE(sizeof(in6_pktinfo))];
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msg.msg_control = msg_ctrl;
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auto quic_conn_handler = worker_->get_quic_connection_handler();
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for (; pktcnt < 10;) {
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msg.msg_namelen = sizeof(su);
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msg.msg_controllen = sizeof(msg_ctrl);
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auto nread = recvmsg(faddr_->fd, &msg, 0);
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if (nread == -1) {
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return;
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}
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++pktcnt;
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Address local_addr{};
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if (util::msghdr_get_local_addr(local_addr, &msg, su.storage.ss_family) !=
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0) {
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continue;
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}
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util::set_port(local_addr, faddr_->port);
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ngtcp2_pkt_info pi{
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.ecn = util::msghdr_get_ecn(&msg, su.storage.ss_family),
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};
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if (LOG_ENABLED(INFO)) {
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LOG(INFO) << "QUIC received packet: local="
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<< util::to_numeric_addr(&local_addr)
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<< " remote=" << util::to_numeric_addr(&su.sa, msg.msg_namelen)
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<< " ecn=" << log::hex << pi.ecn << log::dec << " " << nread
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<< " bytes";
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}
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if (nread == 0) {
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continue;
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}
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Address remote_addr;
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remote_addr.su = su;
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remote_addr.len = msg.msg_namelen;
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quic_conn_handler->handle_packet(faddr_, remote_addr, local_addr, pi,
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buf.data(), nread);
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}
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}
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} // namespace shrpx
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