83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
/*
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* This file is open source software, licensed to you under the terms
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* of the Apache License, Version 2.0 (the "License"). See the NOTICE file
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* distributed with this work for additional information regarding copyright
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* ownership. You may not use this file except in compliance with the License.
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*
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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/*
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* Copyright (C) 2014 Cloudius Systems, Ltd.
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*/
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#include <iostream>
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#include <seastar/core/reactor.hh>
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#include <seastar/core/distributed.hh>
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#include <seastar/core/app-template.hh>
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using namespace seastar;
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using namespace net;
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using namespace std::chrono_literals;
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class udp_server {
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private:
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udp_channel _chan;
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timer<> _stats_timer;
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uint64_t _n_sent {};
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public:
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void start(uint16_t port) {
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ipv4_addr listen_addr{port};
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_chan = make_bound_datagram_channel(listen_addr);
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_stats_timer.set_callback([this] {
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std::cout << "Out: " << _n_sent << " pps" << std::endl;
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_n_sent = 0;
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});
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_stats_timer.arm_periodic(1s);
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// Run server in background.
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(void)keep_doing([this] {
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return _chan.receive().then([this] (datagram dgram) {
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return _chan.send(dgram.get_src(), std::move(dgram.get_data())).then([this] {
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_n_sent++;
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});
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});
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});
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}
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// FIXME: we should properly tear down the service here.
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future<> stop() {
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return make_ready_future<>();
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}
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};
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namespace bpo = boost::program_options;
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int main(int ac, char ** av) {
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app_template app;
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app.add_options()
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("port", bpo::value<uint16_t>()->default_value(10000), "UDP server port") ;
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return app.run_deprecated(ac, av, [&] {
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auto&& config = app.configuration();
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uint16_t port = config["port"].as<uint16_t>();
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auto server = new distributed<udp_server>;
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// Run server in background.
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(void)server->start().then([server = std::move(server), port] () mutable {
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engine().at_exit([server] {
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return server->stop();
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});
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return server->invoke_on_all(&udp_server::start, port);
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}).then([port] {
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std::cout << "Seastar UDP server listening on port " << port << " ...\n";
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});
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});
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}
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