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peer_error.go
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peer_error.go
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// 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"
)
type PeerErrorCode uint8
const (
PeerErrorInvalidMessageCode PeerErrorCode = iota
PeerErrorInvalidMessage
PeerErrorPingFailure
PeerErrorPongFailure
PeerErrorDiscReason
PeerErrorDiscReasonRemote
PeerErrorMessageReceive
PeerErrorMessageSizeLimit
PeerErrorMessageObsolete
PeerErrorMessageSend
PeerErrorLocalStatusNeeded
PeerErrorStatusSend
PeerErrorStatusReceive
PeerErrorStatusDecode
PeerErrorStatusIncompatible
PeerErrorStatusHandshakeTimeout
PeerErrorStatusUnexpected
PeerErrorFirstMessageSend
PeerErrorTest
)
var peerErrorCodeToString = map[PeerErrorCode]string{
PeerErrorInvalidMessageCode: "invalid message code",
PeerErrorInvalidMessage: "invalid message",
PeerErrorPingFailure: "ping failure",
PeerErrorPongFailure: "pong failure",
PeerErrorDiscReason: "disconnect reason",
PeerErrorDiscReasonRemote: "remote disconnect reason",
PeerErrorMessageReceive: "failed to receive a message",
PeerErrorMessageSizeLimit: "too big message",
PeerErrorMessageObsolete: "obsolete message",
PeerErrorMessageSend: "failed to send a message",
PeerErrorLocalStatusNeeded: "need a local status message",
PeerErrorStatusSend: "failed to send the local status",
PeerErrorStatusReceive: "failed to receive the remote status",
PeerErrorStatusDecode: "failed to decode the remote status",
PeerErrorStatusIncompatible: "incompatible remote status",
PeerErrorStatusHandshakeTimeout: "handshake timeout",
PeerErrorStatusUnexpected: "unexpected remote status",
PeerErrorFirstMessageSend: "failed to send the first message",
PeerErrorTest: "test error",
}
func (c PeerErrorCode) String() string {
if len(peerErrorCodeToString) <= int(c) {
return fmt.Sprintf("unknown code %d", c)
}
return peerErrorCodeToString[c]
}
func (c PeerErrorCode) Error() string {
return c.String()
}
type PeerError struct {
Code PeerErrorCode
Reason DiscReason
Err error
Message string
}
func NewPeerError(code PeerErrorCode, reason DiscReason, err error, message string) *PeerError {
return &PeerError{
code,
reason,
err,
message,
}
}
func (pe *PeerError) String() string {
return fmt.Sprintf("PeerError(code=%s, reason=%s, err=%v, message=%s)",
pe.Code, pe.Reason, pe.Err, pe.Message)
}
func (pe *PeerError) Error() string {
return pe.String()
}
type DiscReason uint8
const (
DiscRequested DiscReason = iota
DiscNetworkError
DiscProtocolError
DiscUselessPeer
DiscTooManyPeers
DiscAlreadyConnected
DiscIncompatibleVersion
DiscInvalidIdentity
DiscQuitting
DiscUnexpectedIdentity
DiscSelf
DiscReadTimeout
DiscSubprotocolError = 0x10
)
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 disconnect reason %d", d)
}
return discReasonToString[d]
}
func (d DiscReason) Error() string {
return d.String()
}