-
Notifications
You must be signed in to change notification settings - Fork 0
/
crhudp.go
191 lines (167 loc) · 6.42 KB
/
crhudp.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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
package middleware
import (
"encoding/binary"
"net"
"reflect"
"time"
"github.com/gfads/midarch/pkg/gmidarch/development/messages"
"github.com/gfads/midarch/pkg/gmidarch/development/messages/miop"
"github.com/gfads/midarch/pkg/shared"
"github.com/gfads/midarch/pkg/shared/lib"
)
// @Type: CRHUDP
// @Behaviour: Behaviour = InvP.e1 -> I_Process -> TerP.e1 -> Behaviour
type CRHUDP struct{}
func (c CRHUDP) I_Process(id string, msg *messages.SAMessage, info *interface{}, reset *bool) {
lib.PrintlnDebug("----------------------------------------->", shared.GetFunction(), "CRHUDP Version Not adapted")
infoTemp := *info
crhInfo := infoTemp.(messages.CRHInfo)
sizeOfMsgSize := make([]byte, shared.SIZE_OF_MESSAGE_SIZE, shared.SIZE_OF_MESSAGE_SIZE)
// check message
//payload := msg.Payload.([]byte)
payload := msg.Payload.(messages.RequestorInfo).MarshalledMessage
h := msg.Payload.(messages.RequestorInfo).Inv.Endpoint.Host
p := msg.Payload.(messages.RequestorInfo).Inv.Endpoint.Port
host := ""
port := ""
if h == "" || p == "" {
host = crhInfo.EndPoint.Host
port = crhInfo.EndPoint.Port
} else {
host = h
port = p
}
msgToServer := payload
addr := host + ":" + port
//var err error
if _, ok := crhInfo.Conns[addr]; !ok || reflect.TypeOf(crhInfo.Conns[addr]).Elem().Name() != "UDPConn" { // no connection open yet
udpAddr, err := net.ResolveUDPAddr("udp", addr)
if err != nil {
shared.ErrorHandler(shared.GetFunction(), err.Error())
}
localUdpAddr := c.getLocalUdpAddr()
crhInfo.Conns[addr], err = net.DialUDP("udp", localUdpAddr, udpAddr)
if err != nil {
lib.PrintlnError("Dial error", crhInfo.Conns[addr], err)
shared.ErrorHandler(shared.GetFunction(), err.Error())
} //else{
for {
time.Sleep(200 * time.Millisecond)
miopPacket := miop.CreateReqPacket("Connect", []interface{}{shared.AdaptId}, shared.AdaptId) // idx is the Connection ID
msgPayload := Jsonmarshaller{}.Marshall(miopPacket)
err = c.send(sizeOfMsgSize, msgPayload, crhInfo.Conns[addr])
if err != nil {
lib.PrintlnError("Error on send after dial", crhInfo.Conns[addr], err)
continue
//shared.ErrorHandler(shared.GetFunction(), err.Error())
} //else{
// break
//}
msgFromServer, err := c.read(crhInfo.Conns[addr], sizeOfMsgSize)
if err != nil {
lib.PrintlnDebug("Error while reading Connect msg. Error:", err)
*msg = messages.SAMessage{Payload: nil} // TODO dcruzb: adjust message
crhInfo.Conns[addr].Close()
crhInfo.Conns[addr] = nil
delete(crhInfo.Conns, addr)
return
}
if isNewConnection, miopPacket := c.isNewConnection(msgFromServer); isNewConnection {
if miopPacket.Bd.ReqBody.Body[1] == "Ok" {
break
}
}
//}
}
if addr != shared.NAMING_HOST+":"+shared.NAMING_PORT && shared.LocalAddr == "" {
//fmt.Println("crhInfo.Conns[addr].LocalAddr().String()", crhInfo.Conns[addr].LocalAddr())
lib.PrintlnDebug("crhInfo.Conns[addr].LocalAddr().String()", crhInfo.Conns[addr].LocalAddr().String())
shared.LocalAddr = crhInfo.Conns[addr].LocalAddr().String()
}
}
// send message's size
conn := crhInfo.Conns[addr]
c.send(sizeOfMsgSize, msgToServer, conn)
msgFromServer, err := c.read(conn, sizeOfMsgSize)
if err != nil {
lib.PrintlnError("Error trying to read message:", err.Error())
*msg = messages.SAMessage{Payload: nil} // TODO dcruzb: adjust message
crhInfo.Conns[addr].Close()
crhInfo.Conns[addr] = nil
delete(crhInfo.Conns, addr)
return
}
VerifyAdaptation(msgFromServer, sizeOfMsgSize, conn, c.send)
lib.PrintlnDebug("----------------------------------------->", shared.GetFunction(), "CRHUDP Version Not adapted ###### Read")
*msg = messages.SAMessage{Payload: msgFromServer}
}
func (c CRHUDP) send(sizeOfMsgSize []byte, msgToServer []byte, conn net.Conn) error {
binary.LittleEndian.PutUint32(sizeOfMsgSize, uint32(len(msgToServer)))
_, err := conn.Write(sizeOfMsgSize)
if err != nil {
//shared.ErrorHandler(shared.GetFunction(), err.Error())
lib.PrintlnError("Erro no send 1, retornou o erro", err)
return err
}
lib.PrintlnDebug("----------------------------------------->", shared.GetFunction(), "CRHUDP Version Not adapted ###### Escreveu sizeOfMsgSize")
// send message
_, err = conn.Write(msgToServer)
if err != nil {
//fmt.Println("Erro no envio do sizeOfMsgSize(", sizeOfMsgSize, ") Connection:", reflect.TypeOf(crhInfo.Conns[addr]).Elem().Name())
//shared.ErrorHandler(shared.GetFunction(), err.Error())
lib.PrintlnError("Erro no send 2, retornou o erro", err)
return err
}
lib.PrintlnDebug("----------------------------------------->", shared.GetFunction(), "CRHUDP Version Not adapted ###### Escreveu msg")
return nil
}
func (c CRHUDP) getLocalUdpAddr() *net.UDPAddr {
var err error = nil
var localUdpAddr *net.UDPAddr = nil
//shared.LocalAddr = "127.0.0.1:37522"
if shared.LocalAddr != "" {
//fmt.Println("github.com/gfads/midarch/src/shared.LocalAddr:", shared.LocalAddr)
lib.PrintlnDebug("github.com/gfads/midarch/src/shared.LocalAddr:", shared.LocalAddr)
localUdpAddr, err = net.ResolveUDPAddr("udp", shared.LocalAddr)
if err != nil {
shared.ErrorHandler(shared.GetFunction(), err.Error())
}
} //else{
//fmt.Println("else shared.LocalAddr:", shared.LocalAddr)
//}
return localUdpAddr
}
func (c CRHUDP) read(conn net.Conn, size []byte) ([]byte, error) {
// receive reply's size
err := conn.SetReadDeadline(time.Now().Add(500 * time.Millisecond))
if err != nil {
lib.PrintlnError(shared.GetFunction(), err.Error())
}
_, err = conn.Read(size)
if err != nil {
lib.PrintlnError(shared.GetFunction(), err.Error())
return nil, err
//shared.ErrorHandler(shared.GetFunction(), err.Error())
}
// receive reply
msgFromServer := make([]byte, binary.LittleEndian.Uint32(size), shared.NUM_MAX_MESSAGE_BYTES)
err = conn.SetReadDeadline(time.Now().Add(500 * time.Millisecond))
if err != nil {
lib.PrintlnError(shared.GetFunction(), err.Error())
}
_, err = conn.Read(msgFromServer)
if err != nil {
//shared.ErrorHandler(shared.GetFunction(), err.Error())
lib.PrintlnError(shared.GetFunction(), err.Error())
return nil, err
}
return msgFromServer, nil
}
func (c CRHUDP) isAdapt(msgFromServer []byte) (bool, miop.MiopPacket) {
miop := Jsonmarshaller{}.Unmarshall(msgFromServer)
return miop.Bd.ReqHeader.Operation == "ChangeProtocol", miop
}
func (c CRHUDP) isNewConnection(msgFromServer []byte) (bool, miop.MiopPacket) {
miop := Jsonmarshaller{}.Unmarshall(msgFromServer)
return miop.Bd.ReqHeader.Operation == "Connect", miop
}