-
Notifications
You must be signed in to change notification settings - Fork 2
/
server.go
140 lines (114 loc) · 2.89 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
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
package carrot
import (
"flag"
"fmt"
log "github.com/sirupsen/logrus"
"net/http"
_ "net/http/pprof"
)
const (
serverSecret = "37FUqWlvJhRgwPMM1mlHOGyPNwkVna3b"
port = 8080
)
//the server maintains the list of clients and
//broadcasts messages to the clients
type Server struct {
//register requests from the clients
register chan *Client
//unregister requests from the clients
unregister chan *Client
//access list of existing sessions
sessions SessionStore
//keep track of middleware
Middleware *MiddlewarePipeline
clients *Clients
logger *log.Entry
}
func NewServer(sessionStore SessionStore) (*Server, error) {
clients, err := NewClientList()
if err != nil {
return nil, err
}
return &Server{
register: make(chan *Client),
unregister: make(chan *Client),
sessions: sessionStore,
Middleware: NewMiddlewarePipeline(),
clients: clients,
logger: log.WithField("module", "server"),
}, nil
}
func (svr *Server) Run() {
go svr.Middleware.Run()
for {
select {
case client := <-svr.register:
client.softOpen()
token := SessionToken("")
//create persistent token for new or invalid sessions
exists := svr.sessions.Exists(token)
if (token == "") || !exists {
var err error
token, sessionPtr, err := svr.sessions.NewSession()
if err != nil {
//handle later
log.Error(err)
}
client.session = sessionPtr
if svr.sessions.Length() == 1 { //this is the first connected and therefore primary device
client.session.primaryDevice = true
}
svr.clients.Insert(client)
//TODO: handle way to assign a new primary device if original device disconnects
uuid, err := svr.sessions.GetPrimaryDeviceToken()
if err != nil {
//handle later
log.Error(err)
}
info, err := createInitialDeviceInfo(string(uuid), string(token))
if err != nil {
//handle later
log.Error(err)
}
client.sendBeaconInfo <- info
}
close(client.start)
case client := <-svr.unregister:
if client.Open() {
svr.logger.WithField("session_token", client.session.Token).Info("client unregistered")
client.softClose()
// delete client?
close(client.send)
close(client.sendBeaconInfo)
client = nil
}
}
}
}
func serveHome(w http.ResponseWriter, r *http.Request) {
//log.Println(r.URL)
if r.URL.Path != "/" {
http.Error(w, "Not found", 404)
return
}
if r.Method != "GET" {
http.Error(w, "Method not allowed", 405)
return
}
http.ServeFile(w, r, "home.html")
}
func (svr *Server) Serve() {
addr := flag.String("addr", fmt.Sprintf(":%d", port), "http service address")
http.HandleFunc("/", serveHome)
http.HandleFunc("/ws", func(w http.ResponseWriter, r *http.Request) {
serveWs(svr, w, r)
})
log.WithFields(log.Fields{
"port": port,
"url": "ws://localhost/",
}).Infof("Listening...")
err := http.ListenAndServe(*addr, nil)
if err != nil {
fmt.Println(err)
}
}