3f047be5aa
All code outside of cmd/ is licensed as LGPL. The headers now reflect this by calling the whole work "the go-ethereum library".
114 lines
2.8 KiB
Go
114 lines
2.8 KiB
Go
// Copyright 2014 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// go-ethereum 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
|
|
}
|