154 lines
3.6 KiB
Go
154 lines
3.6 KiB
Go
/**
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* Standalone signaling server for the Nextcloud Spreed app.
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* Copyright (C) 2020 struktur AG
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*
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* @author Joachim Bauch <bauch@struktur.de>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package main
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import (
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"flag"
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"fmt"
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"log"
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"net"
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"net/http"
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"os"
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"os/signal"
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"runtime"
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"strings"
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"syscall"
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"time"
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"github.com/dlintw/goconf"
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"github.com/gorilla/mux"
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"github.com/nats-io/go-nats"
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"signaling"
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)
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var (
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version = "unreleased"
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configFlag = flag.String("config", "proxy.conf", "config file to use")
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showVersion = flag.Bool("version", false, "show version and quit")
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)
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const (
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defaultReadTimeout = 15
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defaultWriteTimeout = 15
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proxyDebugMessages = false
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)
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func main() {
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log.SetFlags(log.Ldate | log.Ltime | log.Lmicroseconds | log.Lshortfile)
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flag.Parse()
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if *showVersion {
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fmt.Printf("nextcloud-spreed-signaling-proxy version %s/%s\n", version, runtime.Version())
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os.Exit(0)
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}
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sigChan := make(chan os.Signal, 1)
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signal.Notify(sigChan, os.Interrupt)
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signal.Notify(sigChan, syscall.SIGHUP)
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log.Printf("Starting up version %s/%s as pid %d", version, runtime.Version(), os.Getpid())
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config, err := goconf.ReadConfigFile(*configFlag)
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if err != nil {
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log.Fatal("Could not read configuration: ", err)
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}
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cpus := runtime.NumCPU()
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runtime.GOMAXPROCS(cpus)
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log.Printf("Using a maximum of %d CPUs\n", cpus)
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natsUrl, _ := config.GetString("nats", "url")
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if natsUrl == "" {
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natsUrl = nats.DefaultURL
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}
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nats, err := signaling.NewNatsClient(natsUrl)
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if err != nil {
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log.Fatal("Could not create NATS client: ", err)
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}
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r := mux.NewRouter()
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proxy, err := NewProxyServer(r, version, config, nats)
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if err != nil {
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log.Fatal(err)
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}
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if err := proxy.Start(config); err != nil {
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log.Fatal(err)
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}
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defer proxy.Stop()
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if addr, _ := config.GetString("http", "listen"); addr != "" {
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readTimeout, _ := config.GetInt("http", "readtimeout")
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if readTimeout <= 0 {
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readTimeout = defaultReadTimeout
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}
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writeTimeout, _ := config.GetInt("http", "writetimeout")
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if writeTimeout <= 0 {
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writeTimeout = defaultWriteTimeout
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}
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for _, address := range strings.Split(addr, " ") {
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go func(address string) {
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log.Println("Listening on", address)
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listener, err := net.Listen("tcp", address)
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if err != nil {
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log.Fatal("Could not start listening: ", err)
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}
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srv := &http.Server{
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Handler: r,
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Addr: addr,
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ReadTimeout: time.Duration(readTimeout) * time.Second,
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WriteTimeout: time.Duration(writeTimeout) * time.Second,
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}
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if err := srv.Serve(listener); err != nil {
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log.Fatal("Could not start server: ", err)
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}
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}(address)
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}
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}
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loop:
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for {
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switch sig := <-sigChan; sig {
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case os.Interrupt:
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log.Println("Interrupted")
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break loop
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case syscall.SIGHUP:
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log.Printf("Received SIGHUP, reloading %s", *configFlag)
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config, err := goconf.ReadConfigFile(*configFlag)
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if err != nil {
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log.Printf("Could not read configuration from %s: %s", *configFlag, err)
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continue
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}
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proxy.Reload(config)
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}
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}
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}
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