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main.go
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main.go
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package main
import (
"log"
"net/http"
"os"
"os/signal"
"syscall"
)
var (
config *Configuration
serverStarted = false
)
func main() {
// Process configuration
config = processConfiguration()
// Setup signals handler
signals := make(chan os.Signal, 1)
signal.Notify(signals, os.Interrupt, syscall.SIGTERM)
go handleSignals(signals)
// Spin up server
server := newServer()
go server.run()
// Setup and run HTTP server
http.HandleFunc("/", serveClientWebInterface)
http.HandleFunc("/ws", func(w http.ResponseWriter, r *http.Request) {
serveClientWebsocket(server, w, r)
})
log.Println("Starting HTTP server on", config.Host)
serverStarted = true
err := http.ListenAndServe(config.Host, nil)
if err != nil {
log.Fatalln("HTTP ListenAndServe error:", err)
}
}
func serveClientWebInterface(w http.ResponseWriter, r *http.Request) {
log.Println("HTTP", r.Method, r.URL)
if r.URL.Path != "/" {
http.Error(w, "Not found", http.StatusNotFound)
return
}
if r.Method != "GET" {
http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
return
}
http.ServeFile(w, r, "../client/web/index.html")
}
func handleSignals(signals chan os.Signal) {
interrupt := <-signals
log.Println("Interrupt received:", interrupt)
if serverStarted {
log.Println("Stopping HTTP server on", config.Host)
}
os.Exit(0)
}