/
transport.go
74 lines (63 loc) · 1.62 KB
/
transport.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
package polling
import (
"net/http"
"net/url"
"time"
"github.com/googollee/go-socket.io/engineio/payload"
"github.com/googollee/go-socket.io/engineio/transport"
)
// Transport is the transport of polling.
type Transport struct {
Client *http.Client
CheckOrigin func(r *http.Request) bool
}
// Default is the default transport.
var Default = &Transport{
Client: &http.Client{
Timeout: time.Minute,
},
CheckOrigin: nil,
}
// Name is the name of transport.
func (t *Transport) Name() string {
return "polling"
}
// Accept accepts a http request and create Conn.
func (t *Transport) Accept(w http.ResponseWriter, r *http.Request) (transport.Conn, error) {
conn := newServerConn(t, r)
return conn, nil
}
// Dial dials connection to url.
func (t *Transport) Dial(u *url.URL, requestHeader http.Header) (transport.Conn, error) {
query := u.Query()
query.Set("transport", t.Name())
u.RawQuery = query.Encode()
client := t.Client
if client == nil {
client = Default.Client
}
return dial(client, u, requestHeader)
}
func dial(client *http.Client, url *url.URL, requestHeader http.Header) (*clientConn, error) {
if client == nil {
client = &http.Client{}
}
req, err := http.NewRequest("", url.String(), nil)
if err != nil {
return nil, err
}
for k, v := range requestHeader {
req.Header[k] = v
}
supportBinary := req.URL.Query().Get("b64") == ""
if supportBinary {
req.Header.Set("Content-Type", "application/octet-stream")
} else {
req.Header.Set("Content-Type", "text/plain;charset=UTF-8")
}
return &clientConn{
Payload: payload.New(supportBinary),
httpClient: client,
request: *req,
}, nil
}