/
server.go
81 lines (68 loc) · 1.61 KB
/
server.go
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
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
package websocket
import (
"net/http"
ws "github.com/gorilla/websocket"
"github.com/marcelbeumer/crispy-octo-goggles/chat"
"github.com/marcelbeumer/crispy-octo-goggles/chat/log"
)
var upgrader = ws.Upgrader{
ReadBufferSize: 1024,
WriteBufferSize: 1024,
}
type Server struct {
logger log.Logger
upgrader ws.Upgrader
hub *chat.Hub
}
func NewServer(logger log.Logger) *Server {
return &Server{
logger: logger,
hub: chat.NewHub(logger),
upgrader: upgrader,
}
}
func (s *Server) Start(addr string) error {
logger := s.logger
logger.Infow("starting server", "addr", addr)
err := http.ListenAndServe(addr, http.HandlerFunc(s.handleHttp))
return err
}
func (s *Server) handleHttp(w http.ResponseWriter, r *http.Request) {
logger := s.logger.With("remoteAddr", r.RemoteAddr)
logger.Info("http request")
username := r.URL.Query().Get("username")
if username == "" {
logger.Infow(
"reject connection",
"reason", "no username provided",
)
http.Error(w, "No username provided", http.StatusBadRequest)
return
}
wsConn, err := s.upgrader.Upgrade(w, r, nil)
if err != nil {
logger.Infow(
"could not upgrade connection",
log.Error(err),
)
return
}
logger.Infow("new websocket connection")
conn := NewConnection(wsConn, logger)
userId, err := s.hub.Connect(username, conn)
if err != nil {
logger.Errorw(
"could not connect to hub",
log.Error(err),
)
}
defer conn.Close(nil)
defer s.hub.Disconnect(userId)
if err := conn.Wait(); err != nil {
logger.Errorw(
"user disconnected with error",
log.Error(err),
)
}
logger.Infow("end of websocket connection")
}