149 lines
3.6 KiB
Go
149 lines
3.6 KiB
Go
/**
|
|
* Standalone signaling server for the Nextcloud Spreed app.
|
|
* Copyright (C) 2020 struktur AG
|
|
*
|
|
* @author Joachim Bauch <bauch@struktur.de>
|
|
*
|
|
* @license GNU AGPL version 3 or any later version
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
package main
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"log"
|
|
"net"
|
|
"net/http"
|
|
"os"
|
|
"os/signal"
|
|
"runtime"
|
|
"strings"
|
|
"syscall"
|
|
"time"
|
|
|
|
"github.com/dlintw/goconf"
|
|
"github.com/gorilla/mux"
|
|
)
|
|
|
|
var (
|
|
version = "unreleased"
|
|
|
|
configFlag = flag.String("config", "proxy.conf", "config file to use")
|
|
|
|
showVersion = flag.Bool("version", false, "show version and quit")
|
|
)
|
|
|
|
const (
|
|
defaultReadTimeout = 15
|
|
defaultWriteTimeout = 15
|
|
|
|
proxyDebugMessages = false
|
|
)
|
|
|
|
func main() {
|
|
log.SetFlags(log.Lshortfile)
|
|
flag.Parse()
|
|
|
|
if *showVersion {
|
|
fmt.Printf("nextcloud-spreed-signaling-proxy version %s/%s\n", version, runtime.Version())
|
|
os.Exit(0)
|
|
}
|
|
|
|
sigChan := make(chan os.Signal, 1)
|
|
signal.Notify(sigChan, os.Interrupt)
|
|
signal.Notify(sigChan, syscall.SIGHUP)
|
|
signal.Notify(sigChan, syscall.SIGUSR1)
|
|
|
|
log.Printf("Starting up version %s/%s as pid %d", version, runtime.Version(), os.Getpid())
|
|
|
|
config, err := goconf.ReadConfigFile(*configFlag)
|
|
if err != nil {
|
|
log.Fatal("Could not read configuration: ", err)
|
|
}
|
|
|
|
cpus := runtime.NumCPU()
|
|
runtime.GOMAXPROCS(cpus)
|
|
log.Printf("Using a maximum of %d CPUs", cpus)
|
|
|
|
r := mux.NewRouter()
|
|
|
|
proxy, err := NewProxyServer(r, version, config)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
if err := proxy.Start(config); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
defer proxy.Stop()
|
|
|
|
if addr, _ := config.GetString("http", "listen"); addr != "" {
|
|
readTimeout, _ := config.GetInt("http", "readtimeout")
|
|
if readTimeout <= 0 {
|
|
readTimeout = defaultReadTimeout
|
|
}
|
|
writeTimeout, _ := config.GetInt("http", "writetimeout")
|
|
if writeTimeout <= 0 {
|
|
writeTimeout = defaultWriteTimeout
|
|
}
|
|
|
|
for _, address := range strings.Split(addr, " ") {
|
|
go func(address string) {
|
|
log.Println("Listening on", address)
|
|
listener, err := net.Listen("tcp", address)
|
|
if err != nil {
|
|
log.Fatal("Could not start listening: ", err)
|
|
}
|
|
srv := &http.Server{
|
|
Handler: r,
|
|
Addr: addr,
|
|
|
|
ReadTimeout: time.Duration(readTimeout) * time.Second,
|
|
WriteTimeout: time.Duration(writeTimeout) * time.Second,
|
|
}
|
|
if err := srv.Serve(listener); err != nil {
|
|
log.Fatal("Could not start server: ", err)
|
|
}
|
|
}(address)
|
|
}
|
|
}
|
|
|
|
loop:
|
|
for {
|
|
select {
|
|
case sig := <-sigChan:
|
|
switch sig {
|
|
case os.Interrupt:
|
|
log.Println("Interrupted")
|
|
break loop
|
|
case syscall.SIGHUP:
|
|
log.Printf("Received SIGHUP, reloading %s", *configFlag)
|
|
if config, err := goconf.ReadConfigFile(*configFlag); err != nil {
|
|
log.Printf("Could not read configuration from %s: %s", *configFlag, err)
|
|
} else {
|
|
proxy.Reload(config)
|
|
}
|
|
case syscall.SIGUSR1:
|
|
log.Printf("Received SIGUSR1, scheduling server to shutdown")
|
|
proxy.ScheduleShutdown()
|
|
}
|
|
case <-proxy.ShutdownChannel():
|
|
log.Printf("All clients disconnected, shutting down")
|
|
break loop
|
|
}
|
|
}
|
|
}
|