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-rw-r--r--eth/peer.go95
1 files changed, 49 insertions, 46 deletions
diff --git a/eth/peer.go b/eth/peer.go
index b0002ce81..9160ac718 100644
--- a/eth/peer.go
+++ b/eth/peer.go
@@ -47,27 +47,21 @@ type peer struct {
td *big.Int
lock sync.RWMutex
- genesis, ourHash common.Hash
- ourTd *big.Int
-
- txHashes *set.Set
- blockHashes *set.Set
+ knownTxs *set.Set // Set of transaction hashes known to be known by this peer
+ knownBlocks *set.Set // Set of block hashes known to be known by this peer
}
-func newPeer(version, network int, genesis, head common.Hash, td *big.Int, p *p2p.Peer, rw p2p.MsgReadWriter) *peer {
+func newPeer(version, network int, p *p2p.Peer, rw p2p.MsgReadWriter) *peer {
id := p.ID()
return &peer{
Peer: p,
rw: rw,
- genesis: genesis,
- ourHash: head,
- ourTd: td,
version: version,
network: network,
id: fmt.Sprintf("%x", id[:8]),
- txHashes: set.New(),
- blockHashes: set.New(),
+ knownTxs: set.New(),
+ knownBlocks: set.New(),
}
}
@@ -104,27 +98,39 @@ func (p *peer) SetTd(td *big.Int) {
p.td.Set(td)
}
-// sendTransactions sends transactions to the peer and includes the hashes
+// MarkBlock marks a block as known for the peer, ensuring that the block will
+// never be propagated to this particular peer.
+func (p *peer) MarkBlock(hash common.Hash) {
+ p.knownBlocks.Add(hash)
+}
+
+// MarkTransaction marks a transaction as known for the peer, ensuring that it
+// will never be propagated to this particular peer.
+func (p *peer) MarkTransaction(hash common.Hash) {
+ p.knownTxs.Add(hash)
+}
+
+// SendTransactions sends transactions to the peer and includes the hashes
// in its transaction hash set for future reference.
-func (p *peer) sendTransactions(txs types.Transactions) error {
+func (p *peer) SendTransactions(txs types.Transactions) error {
propTxnOutPacketsMeter.Mark(1)
for _, tx := range txs {
propTxnOutTrafficMeter.Mark(tx.Size().Int64())
- p.txHashes.Add(tx.Hash())
+ p.knownTxs.Add(tx.Hash())
}
return p2p.Send(p.rw, TxMsg, txs)
}
-// sendBlockHashes sends a batch of known hashes to the remote peer.
-func (p *peer) sendBlockHashes(hashes []common.Hash) error {
+// SendBlockHashes sends a batch of known hashes to the remote peer.
+func (p *peer) SendBlockHashes(hashes []common.Hash) error {
reqHashOutPacketsMeter.Mark(1)
reqHashOutTrafficMeter.Mark(int64(32 * len(hashes)))
return p2p.Send(p.rw, BlockHashesMsg, hashes)
}
-// sendBlocks sends a batch of blocks to the remote peer.
-func (p *peer) sendBlocks(blocks []*types.Block) error {
+// SendBlocks sends a batch of blocks to the remote peer.
+func (p *peer) SendBlocks(blocks []*types.Block) error {
reqBlockOutPacketsMeter.Mark(1)
for _, block := range blocks {
reqBlockOutTrafficMeter.Mark(block.Size().Int64())
@@ -132,52 +138,55 @@ func (p *peer) sendBlocks(blocks []*types.Block) error {
return p2p.Send(p.rw, BlocksMsg, blocks)
}
-// sendNewBlockHashes announces the availability of a number of blocks through
+// SendNewBlockHashes announces the availability of a number of blocks through
// a hash notification.
-func (p *peer) sendNewBlockHashes(hashes []common.Hash) error {
+func (p *peer) SendNewBlockHashes(hashes []common.Hash) error {
propHashOutPacketsMeter.Mark(1)
propHashOutTrafficMeter.Mark(int64(32 * len(hashes)))
for _, hash := range hashes {
- p.blockHashes.Add(hash)
+ p.knownBlocks.Add(hash)
}
return p2p.Send(p.rw, NewBlockHashesMsg, hashes)
}
-// sendNewBlock propagates an entire block to a remote peer.
-func (p *peer) sendNewBlock(block *types.Block) error {
+// SendNewBlock propagates an entire block to a remote peer.
+func (p *peer) SendNewBlock(block *types.Block) error {
propBlockOutPacketsMeter.Mark(1)
propBlockOutTrafficMeter.Mark(block.Size().Int64())
- p.blockHashes.Add(block.Hash())
+ p.knownBlocks.Add(block.Hash())
return p2p.Send(p.rw, NewBlockMsg, []interface{}{block, block.Td})
}
-// requestHashes fetches a batch of hashes from a peer, starting at from, going
+// RequestHashes fetches a batch of hashes from a peer, starting at from, going
// towards the genesis block.
-func (p *peer) requestHashes(from common.Hash) error {
+func (p *peer) RequestHashes(from common.Hash) error {
glog.V(logger.Debug).Infof("Peer [%s] fetching hashes (%d) %x...\n", p.id, downloader.MaxHashFetch, from[:4])
return p2p.Send(p.rw, GetBlockHashesMsg, getBlockHashesMsgData{from, uint64(downloader.MaxHashFetch)})
}
-func (p *peer) requestBlocks(hashes []common.Hash) error {
+// RequestBlocks fetches a batch of blocks corresponding to the specified hashes.
+func (p *peer) RequestBlocks(hashes []common.Hash) error {
glog.V(logger.Debug).Infof("[%s] fetching %v blocks\n", p.id, len(hashes))
return p2p.Send(p.rw, GetBlocksMsg, hashes)
}
-func (p *peer) handleStatus() error {
+// Handshake executes the eth protocol handshake, negotiating version number,
+// network IDs, difficulties, head and genesis blocks.
+func (p *peer) Handshake(td *big.Int, head common.Hash, genesis common.Hash) error {
+ // Send out own handshake in a new thread
errc := make(chan error, 1)
go func() {
errc <- p2p.Send(p.rw, StatusMsg, &statusMsgData{
ProtocolVersion: uint32(p.version),
NetworkId: uint32(p.network),
- TD: p.ourTd,
- CurrentBlock: p.ourHash,
- GenesisBlock: p.genesis,
+ TD: td,
+ CurrentBlock: head,
+ GenesisBlock: genesis,
})
}()
-
- // read and handle remote status
+ // In the mean time retrieve the remote status message
msg, err := p.rw.ReadMsg()
if err != nil {
return err
@@ -188,28 +197,22 @@ func (p *peer) handleStatus() error {
if msg.Size > ProtocolMaxMsgSize {
return errResp(ErrMsgTooLarge, "%v > %v", msg.Size, ProtocolMaxMsgSize)
}
-
+ // Decode the handshake and make sure everything matches
var status statusMsgData
if err := msg.Decode(&status); err != nil {
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
-
- if status.GenesisBlock != p.genesis {
- return errResp(ErrGenesisBlockMismatch, "%x (!= %x)", status.GenesisBlock, p.genesis)
+ if status.GenesisBlock != genesis {
+ return errResp(ErrGenesisBlockMismatch, "%x (!= %x)", status.GenesisBlock, genesis)
}
-
if int(status.NetworkId) != p.network {
return errResp(ErrNetworkIdMismatch, "%d (!= %d)", status.NetworkId, p.network)
}
-
if int(status.ProtocolVersion) != p.version {
return errResp(ErrProtocolVersionMismatch, "%d (!= %d)", status.ProtocolVersion, p.version)
}
- // Set the total difficulty of the peer
- p.td = status.TD
- // set the best hash of the peer
- p.head = status.CurrentBlock
-
+ // Configure the remote peer, and sanity check out handshake too
+ p.td, p.head = status.TD, status.CurrentBlock
return <-errc
}
@@ -284,7 +287,7 @@ func (ps *peerSet) PeersWithoutBlock(hash common.Hash) []*peer {
list := make([]*peer, 0, len(ps.peers))
for _, p := range ps.peers {
- if !p.blockHashes.Has(hash) {
+ if !p.knownBlocks.Has(hash) {
list = append(list, p)
}
}
@@ -299,7 +302,7 @@ func (ps *peerSet) PeersWithoutTx(hash common.Hash) []*peer {
list := make([]*peer, 0, len(ps.peers))
for _, p := range ps.peers {
- if !p.txHashes.Has(hash) {
+ if !p.knownTxs.Has(hash) {
list = append(list, p)
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 13:26:05 +0800