aboutsummaryrefslogtreecommitdiff
path: root/server.go
blob: 930049730f65e27c3982bbe7f975ebfd38f5eb18 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
package goxy

import (
	"crypto/tls"
	"net/http"
	"net/http/httputil"
	"net/url"
	"strings"
)

type Server struct {
	DataFile string
	Route
	http.Server
}

func NewServer(dataFile string) (*Server, error) {
	r := make(Route)
	s := http.Server{TLSConfig: &tls.Config{GetCertificate: r.GetCertificate}}
	server := &Server{Route: r, Server: s, DataFile: dataFile}
	if dataFile != "" {
		server.Load(dataFile)
	}
	RegisterRPC(server)
	return server, server.Update()
}

// Update routes from in-memory state
func (s *Server) Update() error {
	mux := http.NewServeMux()
	for k, v := range s.Route {
		if v.Cert != nil && v.Key != nil {
			cert, err := tls.X509KeyPair(v.Cert, v.Key)
			if err != nil {
				return err
			}
			v.cert = &cert
			s.Route[k] = v
		}
		up, err := url.Parse(v.Upstream)
		if err != nil {
			return err
		}
		if !strings.Contains(v.Host, "/") {
			v.Host += "/"
		}
		switch up.Scheme {
		case "ws":
			mux.Handle(v.Host, NewWebSocketProxy(up))
		default:
			mux.Handle(v.Host, httputil.NewSingleHostReverseProxy(up))
		}
	}
	s.Server.Handler = mux
	return nil
}

func (s *Server) Start() error {
	errc := make(chan error)
	go func() { errc <- s.ListenAndServe() }()
	go func() { errc <- s.ListenAndServeTLS("", "") }()
	go func() { errc <- http.ListenAndServe(":http-alt", nil) }()
	return <-errc
}