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package ws
import (
"fmt"
"net/http"
"github.com/k0swe/kel-agent/internal/config"
"github.com/rs/zerolog/log"
)
type Server struct {
conf config.Config
hub *Hub
Started chan bool
Stop chan bool
}
const wsPath = "/websocket"
func Start(c config.Config) (*Server, error) {
if c.Websocket.Key != "" && c.Websocket.Cert == "" ||
c.Websocket.Key == "" && c.Websocket.Cert != "" {
return &Server{}, fmt.Errorf("-key and -cert must be used together")
}
hub := newHub(&c)
go hub.run()
server := Server{c, hub, make(chan bool, 1), make(chan bool, 1)}
secure := false
protocol := "ws://"
if c.Websocket.Key != "" && c.Websocket.Cert != "" {
secure = true
protocol = "wss://"
}
mux := http.NewServeMux()
mux.HandleFunc(wsPath, func(w http.ResponseWriter, r *http.Request) {
server.serveWs(hub, w, r)
})
mux.HandleFunc("/", server.indexHandler)
addrAndPort := fmt.Sprintf("%s:%d", c.Websocket.Address, c.Websocket.Port)
log.Info().Str("address", fmt.Sprintf("%s%s%s", protocol, addrAndPort, wsPath)).Msg("Serving websocket")
go func() {
var err error
server.Started <- true
if secure {
err = http.ListenAndServeTLS(addrAndPort, c.Websocket.Cert, c.Websocket.Key, mux)
} else {
err = http.ListenAndServe(addrAndPort, mux)
}
log.Fatal().Err(err).Msg("websocket dying")
server.Stop <- true
}()
return &server, nil
}
func (s Server) indexHandler(w http.ResponseWriter, _ *http.Request) {
_, _ = w.Write([]byte("Congratulations, you've reached kel-agent! " +
"If you can see this, you should be able to connect to the websocket."))
}
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