/
workspace_remote_response.go
160 lines (149 loc) · 4.53 KB
/
workspace_remote_response.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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
package code
import (
"bytes"
"io"
"net/http"
"sync"
"github.com/gorilla/websocket"
"github.com/lwch/logging"
"github.com/lwch/natpass/code/network"
"github.com/lwch/natpass/code/utils"
)
func (ws *Workspace) handleRequest(msg *network.Msg) {
defer utils.Recover("handleRequest")
req := msg.GetCsreq()
request, err := http.NewRequest(req.GetMethod(), "http://unix"+req.GetUri(), bytes.NewReader(req.GetBody()))
if err != nil {
logging.Error("build request [%s] [%s]: %v", ws.id, ws.name, err)
ws.remote.SendCodeResponseHeader(ws.target, ws.id, req.GetRequestId(),
http.StatusInternalServerError, nil)
ws.remote.SendCodeResponseBody(ws.target, ws.id, req.GetRequestId(),
0, false, true, []byte(err.Error()))
return
}
for key, values := range req.GetHeader() {
for _, v := range values.GetValues() {
request.Header.Add(key, v)
}
}
response, err := ws.cli.Do(request)
if err != nil {
logging.Error("call request [%s] [%s] [%s]: %v", ws.id, ws.name, req.GetUri(), err)
ws.remote.SendCodeResponseHeader(ws.target, ws.id, req.GetRequestId(),
http.StatusInternalServerError, nil)
ws.remote.SendCodeResponseBody(ws.target, ws.id, req.GetRequestId(),
0, false, true, []byte(err.Error()))
return
}
defer response.Body.Close()
send := ws.remote.SendCodeResponseHeader(ws.target, ws.id, req.GetRequestId(), uint32(response.StatusCode), response.Header)
ws.sendBytes += send
ws.sendPacket++
buf := make([]byte, 32*1024) // 32k block read
var idx uint32
for {
n, err := response.Body.Read(buf)
if err != nil {
if err == io.EOF {
send := ws.remote.SendCodeResponseBody(ws.target, ws.id, req.GetRequestId(), idx, true, true, buf[:n])
ws.sendBytes += send
ws.sendPacket++
return
}
send := ws.remote.SendCodeResponseBody(ws.target, ws.id, req.GetRequestId(), idx, false, true, []byte(err.Error()))
ws.sendBytes += send
ws.sendPacket++
logging.Error("call request [%s] [%s] [%s] read response data: %v", ws.id, ws.name, req.GetUri(), err)
return
}
send := ws.remote.SendCodeResponseBody(ws.target, ws.id, req.GetRequestId(), idx, true, false, buf[:n])
ws.sendBytes += send
ws.sendPacket++
idx++
}
}
func (ws *Workspace) handleConnect(msg *network.Msg) {
defer utils.Recover("handleConnect")
connect := msg.GetCsconn()
hdr := make(http.Header)
for key, values := range connect.GetHeader() {
for _, value := range values.GetValues() {
hdr.Add(key, value)
}
}
remote, resp, err := ws.dailer.Dial("ws://unix"+connect.GetUri(), hdr)
if err != nil {
logging.Error("dial websocket [%s] [%s]: %v", ws.id, ws.name, err)
send := ws.remote.SendCodeResponseConnect(ws.target, ws.id, connect.GetRequestId(),
false, err.Error(), nil)
ws.sendBytes += send
ws.sendPacket++
return
}
defer remote.Close()
defer resp.Body.Close()
send := ws.remote.SendCodeResponseConnect(ws.target, ws.id, connect.GetRequestId(),
true, "", resp.Header)
ws.sendBytes += send
ws.sendPacket++
var wg sync.WaitGroup
wg.Add(2)
go ws.ws2remote(&wg, connect.GetRequestId(), remote)
go ws.remote2ws(&wg, connect.GetRequestId(), remote)
wg.Wait()
}
func (ws *Workspace) ws2remote(wg *sync.WaitGroup, reqID uint64, conn *websocket.Conn) {
defer wg.Done()
defer conn.Close()
defer ws.closeMessage(reqID)
for {
t, data, err := conn.ReadMessage()
if err != nil {
logging.Error("read_message [%s] [%s]: %v", ws.id, ws.name, err)
ws.SendData(reqID, false, websocket.TextMessage, []byte(err.Error()))
return
}
ws.SendData(reqID, true, t, data)
}
}
// SendData send websocket data
func (ws *Workspace) SendData(reqID uint64, ok bool, t int, body []byte) {
for i := 0; i < len(body); i += 32 * 1024 {
end := i + 32*1024
if end > len(body) {
end = len(body)
}
send := ws.remote.SendCodeData(ws.target, ws.id, reqID,
ok, t, body[i:end])
ws.sendBytes += send
ws.sendPacket++
}
}
func (ws *Workspace) remote2ws(wg *sync.WaitGroup, reqID uint64, conn *websocket.Conn) {
defer wg.Done()
defer conn.Close()
defer ws.closeMessage(reqID)
ch := ws.chanResponse(reqID)
for {
msg := <-ch
if msg == nil {
return
}
if msg.GetXType() != network.Msg_code_data {
logging.Error("got invalid message type [%s] [%s]: %s",
ws.id, ws.name, msg.GetXType().String())
return
}
data := msg.GetCsdata()
if !data.GetOk() {
logging.Error("read message [%s] [%s]: %s",
ws.id, ws.name, string(data.GetData()))
return
}
err := conn.WriteMessage(int(data.GetType()), data.GetData())
if err != nil {
logging.Error("write_message [%s] [%s]: %v", ws.id, ws.name, err)
return
}
}
}