forked from OffchainLabs/go-ethereum
/
types.go
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/
types.go
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// Copyright 2020 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package ethtest
import (
"crypto/ecdsa"
"fmt"
"time"
"github.com/coming-chat/go-ethereum-arbitrum/eth/protocols/eth"
"github.com/coming-chat/go-ethereum-arbitrum/p2p"
"github.com/coming-chat/go-ethereum-arbitrum/p2p/rlpx"
"github.com/coming-chat/go-ethereum-arbitrum/rlp"
)
type Message interface {
Code() int
}
type Error struct {
err error
}
func (e *Error) Unwrap() error { return e.err }
func (e *Error) Error() string { return e.err.Error() }
func (e *Error) Code() int { return -1 }
func (e *Error) String() string { return e.Error() }
func errorf(format string, args ...interface{}) *Error {
return &Error{fmt.Errorf(format, args...)}
}
// Hello is the RLP structure of the protocol handshake.
type Hello struct {
Version uint64
Name string
Caps []p2p.Cap
ListenPort uint64
ID []byte // secp256k1 public key
// Ignore additional fields (for forward compatibility).
Rest []rlp.RawValue `rlp:"tail"`
}
func (h Hello) Code() int { return 0x00 }
// Disconnect is the RLP structure for a disconnect message.
type Disconnect struct {
Reason p2p.DiscReason
}
func (d Disconnect) Code() int { return 0x01 }
type Ping struct{}
func (p Ping) Code() int { return 0x02 }
type Pong struct{}
func (p Pong) Code() int { return 0x03 }
// Status is the network packet for the status message for eth/64 and later.
type Status eth.StatusPacket
func (s Status) Code() int { return 16 }
// NewBlockHashes is the network packet for the block announcements.
type NewBlockHashes eth.NewBlockHashesPacket
func (nbh NewBlockHashes) Code() int { return 17 }
type Transactions eth.TransactionsPacket
func (t Transactions) Code() int { return 18 }
// GetBlockHeaders represents a block header query.
type GetBlockHeaders eth.GetBlockHeadersPacket
func (g GetBlockHeaders) Code() int { return 19 }
type BlockHeaders eth.BlockHeadersPacket
func (bh BlockHeaders) Code() int { return 20 }
// GetBlockBodies represents a GetBlockBodies request
type GetBlockBodies eth.GetBlockBodiesPacket
func (gbb GetBlockBodies) Code() int { return 21 }
// BlockBodies is the network packet for block content distribution.
type BlockBodies eth.BlockBodiesPacket
func (bb BlockBodies) Code() int { return 22 }
// NewBlock is the network packet for the block propagation message.
type NewBlock eth.NewBlockPacket
func (nb NewBlock) Code() int { return 23 }
// NewPooledTransactionHashes is the network packet for the tx hash propagation message.
type NewPooledTransactionHashes eth.NewPooledTransactionHashesPacket
func (nb NewPooledTransactionHashes) Code() int { return 24 }
type GetPooledTransactions eth.GetPooledTransactionsPacket
func (gpt GetPooledTransactions) Code() int { return 25 }
type PooledTransactions eth.PooledTransactionsPacket
func (pt PooledTransactions) Code() int { return 26 }
// Conn represents an individual connection with a peer
type Conn struct {
*rlpx.Conn
ourKey *ecdsa.PrivateKey
negotiatedProtoVersion uint
negotiatedSnapProtoVersion uint
ourHighestProtoVersion uint
ourHighestSnapProtoVersion uint
caps []p2p.Cap
}
// Read reads an eth packet from the connection.
func (c *Conn) Read() Message {
code, rawData, _, err := c.Conn.Read()
if err != nil {
return errorf("could not read from connection: %v", err)
}
var msg Message
switch int(code) {
case (Hello{}).Code():
msg = new(Hello)
case (Ping{}).Code():
msg = new(Ping)
case (Pong{}).Code():
msg = new(Pong)
case (Disconnect{}).Code():
msg = new(Disconnect)
case (Status{}).Code():
msg = new(Status)
case (GetBlockHeaders{}).Code():
msg = new(GetBlockHeaders)
case (BlockHeaders{}).Code():
msg = new(BlockHeaders)
case (GetBlockBodies{}).Code():
msg = new(GetBlockBodies)
case (BlockBodies{}).Code():
msg = new(BlockBodies)
case (NewBlock{}).Code():
msg = new(NewBlock)
case (NewBlockHashes{}).Code():
msg = new(NewBlockHashes)
case (Transactions{}).Code():
msg = new(Transactions)
case (NewPooledTransactionHashes{}).Code():
msg = new(NewPooledTransactionHashes)
case (GetPooledTransactions{}.Code()):
msg = new(GetPooledTransactions)
case (PooledTransactions{}.Code()):
msg = new(PooledTransactions)
default:
return errorf("invalid message code: %d", code)
}
// if message is devp2p, decode here
if err := rlp.DecodeBytes(rawData, msg); err != nil {
return errorf("could not rlp decode message: %v", err)
}
return msg
}
// Read66 reads an eth66 packet from the connection.
func (c *Conn) Read66() (uint64, Message) {
code, rawData, _, err := c.Conn.Read()
if err != nil {
return 0, errorf("could not read from connection: %v", err)
}
var msg Message
switch int(code) {
case (Hello{}).Code():
msg = new(Hello)
case (Ping{}).Code():
msg = new(Ping)
case (Pong{}).Code():
msg = new(Pong)
case (Disconnect{}).Code():
msg = new(Disconnect)
case (Status{}).Code():
msg = new(Status)
case (GetBlockHeaders{}).Code():
ethMsg := new(eth.GetBlockHeadersPacket66)
if err := rlp.DecodeBytes(rawData, ethMsg); err != nil {
return 0, errorf("could not rlp decode message: %v", err)
}
return ethMsg.RequestId, GetBlockHeaders(*ethMsg.GetBlockHeadersPacket)
case (BlockHeaders{}).Code():
ethMsg := new(eth.BlockHeadersPacket66)
if err := rlp.DecodeBytes(rawData, ethMsg); err != nil {
return 0, errorf("could not rlp decode message: %v", err)
}
return ethMsg.RequestId, BlockHeaders(ethMsg.BlockHeadersPacket)
case (GetBlockBodies{}).Code():
ethMsg := new(eth.GetBlockBodiesPacket66)
if err := rlp.DecodeBytes(rawData, ethMsg); err != nil {
return 0, errorf("could not rlp decode message: %v", err)
}
return ethMsg.RequestId, GetBlockBodies(ethMsg.GetBlockBodiesPacket)
case (BlockBodies{}).Code():
ethMsg := new(eth.BlockBodiesPacket66)
if err := rlp.DecodeBytes(rawData, ethMsg); err != nil {
return 0, errorf("could not rlp decode message: %v", err)
}
return ethMsg.RequestId, BlockBodies(ethMsg.BlockBodiesPacket)
case (NewBlock{}).Code():
msg = new(NewBlock)
case (NewBlockHashes{}).Code():
msg = new(NewBlockHashes)
case (Transactions{}).Code():
msg = new(Transactions)
case (NewPooledTransactionHashes{}).Code():
msg = new(NewPooledTransactionHashes)
case (GetPooledTransactions{}.Code()):
ethMsg := new(eth.GetPooledTransactionsPacket66)
if err := rlp.DecodeBytes(rawData, ethMsg); err != nil {
return 0, errorf("could not rlp decode message: %v", err)
}
return ethMsg.RequestId, GetPooledTransactions(ethMsg.GetPooledTransactionsPacket)
case (PooledTransactions{}.Code()):
ethMsg := new(eth.PooledTransactionsPacket66)
if err := rlp.DecodeBytes(rawData, ethMsg); err != nil {
return 0, errorf("could not rlp decode message: %v", err)
}
return ethMsg.RequestId, PooledTransactions(ethMsg.PooledTransactionsPacket)
default:
msg = errorf("invalid message code: %d", code)
}
if msg != nil {
if err := rlp.DecodeBytes(rawData, msg); err != nil {
return 0, errorf("could not rlp decode message: %v", err)
}
return 0, msg
}
return 0, errorf("invalid message: %s", string(rawData))
}
// Write writes a eth packet to the connection.
func (c *Conn) Write(msg Message) error {
payload, err := rlp.EncodeToBytes(msg)
if err != nil {
return err
}
_, err = c.Conn.Write(uint64(msg.Code()), payload)
return err
}
// Write66 writes an eth66 packet to the connection.
func (c *Conn) Write66(req eth.Packet, code int) error {
payload, err := rlp.EncodeToBytes(req)
if err != nil {
return err
}
_, err = c.Conn.Write(uint64(code), payload)
return err
}
// ReadSnap reads a snap/1 response with the given id from the connection.
func (c *Conn) ReadSnap(id uint64) (Message, error) {
respId := id + 1
start := time.Now()
for respId != id && time.Since(start) < timeout {
code, rawData, _, err := c.Conn.Read()
if err != nil {
return nil, fmt.Errorf("could not read from connection: %v", err)
}
var snpMsg interface{}
switch int(code) {
case (GetAccountRange{}).Code():
snpMsg = new(GetAccountRange)
case (AccountRange{}).Code():
snpMsg = new(AccountRange)
case (GetStorageRanges{}).Code():
snpMsg = new(GetStorageRanges)
case (StorageRanges{}).Code():
snpMsg = new(StorageRanges)
case (GetByteCodes{}).Code():
snpMsg = new(GetByteCodes)
case (ByteCodes{}).Code():
snpMsg = new(ByteCodes)
case (GetTrieNodes{}).Code():
snpMsg = new(GetTrieNodes)
case (TrieNodes{}).Code():
snpMsg = new(TrieNodes)
default:
//return nil, fmt.Errorf("invalid message code: %d", code)
continue
}
if err := rlp.DecodeBytes(rawData, snpMsg); err != nil {
return nil, fmt.Errorf("could not rlp decode message: %v", err)
}
return snpMsg.(Message), nil
}
return nil, fmt.Errorf("request timed out")
}