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
|
// Copyright 2014 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package p2p
import (
"fmt"
)
const (
errInvalidMsgCode = iota
errInvalidMsg
)
var errorToString = map[int]string{
errInvalidMsgCode: "invalid message code",
errInvalidMsg: "invalid message",
}
type peerError struct {
code int
message string
}
func newPeerError(code int, format string, v ...interface{}) *peerError {
desc, ok := errorToString[code]
if !ok {
panic("invalid error code")
}
err := &peerError{code, desc}
if format != "" {
err.message += ": " + fmt.Sprintf(format, v...)
}
return err
}
func (self *peerError) Error() string {
return self.message
}
type DiscReason uint
const (
DiscRequested DiscReason = iota
DiscNetworkError
DiscProtocolError
DiscUselessPeer
DiscTooManyPeers
DiscAlreadyConnected
DiscIncompatibleVersion
DiscInvalidIdentity
DiscQuitting
DiscUnexpectedIdentity
DiscSelf
DiscReadTimeout
DiscSubprotocolError
)
var discReasonToString = [...]string{
DiscRequested: "Disconnect requested",
DiscNetworkError: "Network error",
DiscProtocolError: "Breach of protocol",
DiscUselessPeer: "Useless peer",
DiscTooManyPeers: "Too many peers",
DiscAlreadyConnected: "Already connected",
DiscIncompatibleVersion: "Incompatible P2P protocol version",
DiscInvalidIdentity: "Invalid node identity",
DiscQuitting: "Client quitting",
DiscUnexpectedIdentity: "Unexpected identity",
DiscSelf: "Connected to self",
DiscReadTimeout: "Read timeout",
DiscSubprotocolError: "Subprotocol error",
}
func (d DiscReason) String() string {
if len(discReasonToString) < int(d) {
return fmt.Sprintf("Unknown Reason(%d)", d)
}
return discReasonToString[d]
}
func (d DiscReason) Error() string {
return d.String()
}
func discReasonForError(err error) DiscReason {
if reason, ok := err.(DiscReason); ok {
return reason
}
peerError, ok := err.(*peerError)
if ok {
switch peerError.code {
case errInvalidMsgCode, errInvalidMsg:
return DiscProtocolError
default:
return DiscSubprotocolError
}
}
return DiscSubprotocolError
}
|
