diff options
Diffstat (limited to 'eth')
| -rw-r--r-- | eth/backend.go | 4 | ||||
| -rw-r--r-- | eth/protocol.go | 95 | ||||
| -rw-r--r-- | eth/protocol_test.go | 189 |
3 files changed, 121 insertions, 167 deletions
diff --git a/eth/backend.go b/eth/backend.go index 9e5324688..afe314d74 100644 --- a/eth/backend.go +++ b/eth/backend.go @@ -405,7 +405,7 @@ func (self *Ethereum) txBroadcastLoop() { // automatically stops if unsubscribe for obj := range self.txSub.Chan() { event := obj.(core.TxPreEvent) - self.net.Broadcast("eth", TxMsg, event.Tx.RlpData()) + self.net.Broadcast("eth", TxMsg, []*types.Transaction{event.Tx}) } } @@ -414,7 +414,7 @@ func (self *Ethereum) blockBroadcastLoop() { for obj := range self.blockSub.Chan() { switch ev := obj.(type) { case core.NewMinedBlockEvent: - self.net.Broadcast("eth", NewBlockMsg, ev.Block.RlpData(), ev.Block.Td) + self.net.Broadcast("eth", NewBlockMsg, []interface{}{ev.Block, ev.Block.Td}) } } } diff --git a/eth/protocol.go b/eth/protocol.go index a1c2ae688..6d610a663 100644 --- a/eth/protocol.go +++ b/eth/protocol.go @@ -89,7 +89,7 @@ type blockPool interface { RemovePeer(peerId string) } -// message structs used for rlp decoding +// message structs used for RLP serialization type newBlockMsgData struct { Block *types.Block TD *big.Int @@ -100,6 +100,14 @@ type getBlockHashesMsgData struct { Amount uint64 } +type statusMsgData struct { + ProtocolVersion uint32 + NetworkId uint32 + TD *big.Int + CurrentBlock common.Hash + GenesisBlock common.Hash +} + // main entrypoint, wrappers starting a server running the eth protocol // use this constructor to attach the protocol ("class") to server caps // the Dev p2p layer then runs the protocol instance on each peer @@ -132,18 +140,25 @@ func runEthProtocol(protocolVersion, networkId int, txPool txPool, chainManager }, id: fmt.Sprintf("%x", id[:8]), } - err = self.handleStatus() - if err == nil { - self.propagateTxs() - for { - err = self.handle() - if err != nil { - self.blockPool.RemovePeer(self.id) - break - } + + // handshake. + if err := self.handleStatus(); err != nil { + return err + } + defer self.blockPool.RemovePeer(self.id) + + // propagate existing transactions. new transactions appearing + // after this will be sent via broadcasts. + if err := p2p.Send(rw, TxMsg, txPool.GetTransactions()); err != nil { + return err + } + + // main loop. handle incoming messages. + for { + if err := self.handle(); err != nil { + return err } } - return } func (self *ethProtocol) handle() error { @@ -186,7 +201,7 @@ func (self *ethProtocol) handle() error { request.Amount = maxHashes } hashes := self.chainManager.GetBlockHashesFromHash(request.Hash, request.Amount) - return p2p.EncodeMsg(self.rw, BlockHashesMsg, rlp.Flat(hashes)) + return p2p.Send(self.rw, BlockHashesMsg, hashes) case BlockHashesMsg: msgStream := rlp.NewStream(msg.Payload) @@ -216,7 +231,7 @@ func (self *ethProtocol) handle() error { return err } - var blocks []interface{} + var blocks []*types.Block var i int for { i++ @@ -224,7 +239,7 @@ func (self *ethProtocol) handle() error { err := msgStream.Decode(&hash) if err == rlp.EOL { break - } else { + } else if err != nil { return self.protoError(ErrDecode, "msg %v: %v", msg, err) } @@ -236,7 +251,7 @@ func (self *ethProtocol) handle() error { break } } - return p2p.EncodeMsg(self.rw, BlocksMsg, blocks...) + return p2p.Send(self.rw, BlocksMsg, blocks) case BlocksMsg: msgStream := rlp.NewStream(msg.Payload) @@ -283,29 +298,8 @@ func (self *ethProtocol) handle() error { return nil } -type statusMsgData struct { - ProtocolVersion uint32 - NetworkId uint32 - TD *big.Int - CurrentBlock common.Hash - GenesisBlock common.Hash -} - -func (self *ethProtocol) statusMsg() p2p.Msg { - td, currentBlock, genesisBlock := self.chainManager.Status() - - return p2p.NewMsg(StatusMsg, - uint32(self.protocolVersion), - uint32(self.networkId), - td, - currentBlock, - genesisBlock, - ) -} - func (self *ethProtocol) handleStatus() error { - // send precanned status message - if err := self.rw.WriteMsg(self.statusMsg()); err != nil { + if err := self.sendStatus(); err != nil { return err } @@ -314,11 +308,9 @@ func (self *ethProtocol) handleStatus() error { if err != nil { return err } - if msg.Code != StatusMsg { return self.protoError(ErrNoStatusMsg, "first msg has code %x (!= %x)", msg.Code, StatusMsg) } - if msg.Size > ProtocolMaxMsgSize { return self.protoError(ErrMsgTooLarge, "%v > %v", msg.Size, ProtocolMaxMsgSize) } @@ -351,12 +343,12 @@ func (self *ethProtocol) handleStatus() error { func (self *ethProtocol) requestBlockHashes(from common.Hash) error { self.peer.Debugf("fetching hashes (%d) %x...\n", maxHashes, from[0:4]) - return p2p.EncodeMsg(self.rw, GetBlockHashesMsg, interface{}(from), uint64(maxHashes)) + return p2p.Send(self.rw, GetBlockHashesMsg, getBlockHashesMsgData{from, maxHashes}) } func (self *ethProtocol) requestBlocks(hashes []common.Hash) error { self.peer.Debugf("fetching %v blocks", len(hashes)) - return p2p.EncodeMsg(self.rw, GetBlocksMsg, rlp.Flat(hashes)) + return p2p.Send(self.rw, GetBlocksMsg, hashes) } func (self *ethProtocol) protoError(code int, format string, params ...interface{}) (err *errs.Error) { @@ -365,19 +357,20 @@ func (self *ethProtocol) protoError(code int, format string, params ...interface return } +func (self *ethProtocol) sendStatus() error { + td, currentBlock, genesisBlock := self.chainManager.Status() + return p2p.Send(self.rw, StatusMsg, &statusMsgData{ + ProtocolVersion: uint32(self.protocolVersion), + NetworkId: uint32(self.networkId), + TD: td, + CurrentBlock: currentBlock, + GenesisBlock: genesisBlock, + }) +} + func (self *ethProtocol) protoErrorDisconnect(err *errs.Error) { err.Log(self.peer.Logger) if err.Fatal() { self.peer.Disconnect(p2p.DiscSubprotocolError) } } - -func (self *ethProtocol) propagateTxs() { - transactions := self.txPool.GetTransactions() - iface := make([]interface{}, len(transactions)) - for i, transaction := range transactions { - iface[i] = transaction - } - - self.rw.WriteMsg(p2p.NewMsg(TxMsg, iface...)) -} diff --git a/eth/protocol_test.go b/eth/protocol_test.go index 108fb4475..7620b3854 100644 --- a/eth/protocol_test.go +++ b/eth/protocol_test.go @@ -1,8 +1,6 @@ package eth import ( - "bytes" - "io" "log" "math/big" "os" @@ -29,52 +27,21 @@ func logInit() { } } -type testMsgReadWriter struct { - in chan p2p.Msg - out []p2p.Msg -} - -func (self *testMsgReadWriter) In(msg p2p.Msg) { - self.in <- msg -} - -func (self *testMsgReadWriter) Out() (msg p2p.Msg, ok bool) { - if len(self.out) > 0 { - msg = self.out[0] - self.out = self.out[1:] - ok = true - } - return -} - -func (self *testMsgReadWriter) WriteMsg(msg p2p.Msg) error { - self.out = append(self.out, msg) - return nil -} - -func (self *testMsgReadWriter) ReadMsg() (p2p.Msg, error) { - msg, ok := <-self.in - if !ok { - return msg, io.EOF - } - return msg, nil -} - type testTxPool struct { getTransactions func() []*types.Transaction addTransactions func(txs []*types.Transaction) } type testChainManager struct { - getBlockHashes func(hash []byte, amount uint64) (hashes [][]byte) - getBlock func(hash []byte) *types.Block - status func() (td *big.Int, currentBlock []byte, genesisBlock []byte) + getBlockHashes func(hash common.Hash, amount uint64) (hashes []common.Hash) + getBlock func(hash common.Hash) *types.Block + status func() (td *big.Int, currentBlock common.Hash, genesisBlock common.Hash) } type testBlockPool struct { - addBlockHashes func(next func() ([]byte, bool), peerId string) + addBlockHashes func(next func() (common.Hash, bool), peerId string) addBlock func(block *types.Block, peerId string) (err error) - addPeer func(td *big.Int, currentBlock []byte, peerId string, requestHashes func([]byte) error, requestBlocks func([][]byte) error, peerError func(*errs.Error)) (best bool) + addPeer func(td *big.Int, currentBlock common.Hash, peerId string, requestHashes func(common.Hash) error, requestBlocks func([]common.Hash) error, peerError func(*errs.Error)) (best bool) removePeer func(peerId string) } @@ -93,28 +60,28 @@ func (self *testTxPool) AddTransactions(txs []*types.Transaction) { func (self *testTxPool) GetTransactions() types.Transactions { return nil } -func (self *testChainManager) GetBlockHashesFromHash(hash []byte, amount uint64) (hashes [][]byte) { +func (self *testChainManager) GetBlockHashesFromHash(hash common.Hash, amount uint64) (hashes []common.Hash) { if self.getBlockHashes != nil { hashes = self.getBlockHashes(hash, amount) } return } -func (self *testChainManager) Status() (td *big.Int, currentBlock []byte, genesisBlock []byte) { +func (self *testChainManager) Status() (td *big.Int, currentBlock common.Hash, genesisBlock common.Hash) { if self.status != nil { td, currentBlock, genesisBlock = self.status() } return } -func (self *testChainManager) GetBlock(hash []byte) (block *types.Block) { +func (self *testChainManager) GetBlock(hash common.Hash) (block *types.Block) { if self.getBlock != nil { block = self.getBlock(hash) } return } -func (self *testBlockPool) AddBlockHashes(next func() ([]byte, bool), peerId string) { +func (self *testBlockPool) AddBlockHashes(next func() (common.Hash, bool), peerId string) { if self.addBlockHashes != nil { self.addBlockHashes(next, peerId) } @@ -126,7 +93,7 @@ func (self *testBlockPool) AddBlock(block *types.Block, peerId string) { } } -func (self *testBlockPool) AddPeer(td *big.Int, currentBlock []byte, peerId string, requestBlockHashes func([]byte) error, requestBlocks func([][]byte) error, peerError func(*errs.Error)) (best bool) { +func (self *testBlockPool) AddPeer(td *big.Int, currentBlock common.Hash, peerId string, requestBlockHashes func(common.Hash) error, requestBlocks func([]common.Hash) error, peerError func(*errs.Error)) (best bool) { if self.addPeer != nil { best = self.addPeer(td, currentBlock, peerId, requestBlockHashes, requestBlocks, peerError) } @@ -147,28 +114,36 @@ func testPeer() *p2p.Peer { } type ethProtocolTester struct { + p2p.MsgReadWriter // writing to the tester feeds the protocol + quit chan error - rw *testMsgReadWriter // p2p.MsgReadWriter - txPool *testTxPool // txPool - chainManager *testChainManager // chainManager - blockPool *testBlockPool // blockPool + pipe *p2p.MsgPipeRW // the protocol read/writes on this end + txPool *testTxPool // txPool + chainManager *testChainManager // chainManager + blockPool *testBlockPool // blockPool t *testing.T } func newEth(t *testing.T) *ethProtocolTester { + p1, p2 := p2p.MsgPipe() return ðProtocolTester{ - quit: make(chan error), - rw: &testMsgReadWriter{in: make(chan p2p.Msg, 10)}, - txPool: &testTxPool{}, - chainManager: &testChainManager{}, - blockPool: &testBlockPool{}, - t: t, + MsgReadWriter: p1, + quit: make(chan error, 1), + pipe: p2, + txPool: &testTxPool{}, + chainManager: &testChainManager{}, + blockPool: &testBlockPool{}, + t: t, } } func (self *ethProtocolTester) reset() { - self.rw = &testMsgReadWriter{in: make(chan p2p.Msg, 10)} - self.quit = make(chan error) + self.pipe.Close() + + p1, p2 := p2p.MsgPipe() + self.MsgReadWriter = p1 + self.pipe = p2 + self.quit = make(chan error, 1) } func (self *ethProtocolTester) checkError(expCode int, delay time.Duration) (err error) { @@ -190,33 +165,8 @@ func (self *ethProtocolTester) checkError(expCode int, delay time.Duration) (err return } -func (self *ethProtocolTester) In(msg p2p.Msg) { - self.rw.In(msg) -} - -func (self *ethProtocolTester) Out() (p2p.Msg, bool) { - return self.rw.Out() -} - -func (self *ethProtocolTester) checkMsg(i int, code uint64, val interface{}) (msg p2p.Msg) { - if i >= len(self.rw.out) { - self.t.Errorf("expected at least %v msgs, got %v", i, len(self.rw.out)) - return - } - msg = self.rw.out[i] - if msg.Code != code { - self.t.Errorf("expected msg code %v, got %v", code, msg.Code) - } - if val != nil { - if err := msg.Decode(val); err != nil { - self.t.Errorf("rlp encoding error: %v", err) - } - } - return -} - func (self *ethProtocolTester) run() { - err := runEthProtocol(ProtocolVersion, NetworkId, self.txPool, self.chainManager, self.blockPool, testPeer(), self.rw) + err := runEthProtocol(ProtocolVersion, NetworkId, self.txPool, self.chainManager, self.blockPool, testPeer(), self.pipe) self.quit <- err } @@ -224,41 +174,52 @@ func TestStatusMsgErrors(t *testing.T) { logInit() eth := newEth(t) td := common.Big1 - currentBlock := []byte{1} - genesis := []byte{2} - eth.chainManager.status = func() (*big.Int, []byte, []byte) { return td, currentBlock, genesis } - go eth.run() - statusMsg := p2p.NewMsg(4) - eth.In(statusMsg) - delay := 1 * time.Second - eth.checkError(ErrNoStatusMsg, delay) - var status statusMsgData - eth.checkMsg(0, StatusMsg, &status) // first outgoing msg should be StatusMsg - if status.TD.Cmp(td) != 0 || - status.ProtocolVersion != ProtocolVersion || - status.NetworkId != NetworkId || - status.TD.Cmp(td) != 0 || - bytes.Compare(status.CurrentBlock, currentBlock) != 0 || - bytes.Compare(status.GenesisBlock, genesis) != 0 { - t.Errorf("incorrect outgoing status") - } - - eth.reset() + currentBlock := common.Hash{1} + genesis := common.Hash{2} + eth.chainManager.status = func() (*big.Int, common.Hash, common.Hash) { return td, currentBlock, genesis } go eth.run() - statusMsg = p2p.NewMsg(0, uint32(48), uint32(0), td, currentBlock, genesis) - eth.In(statusMsg) - eth.checkError(ErrProtocolVersionMismatch, delay) - eth.reset() - go eth.run() - statusMsg = p2p.NewMsg(0, uint32(49), uint32(1), td, currentBlock, genesis) - eth.In(statusMsg) - eth.checkError(ErrNetworkIdMismatch, delay) + tests := []struct { + code uint64 + data interface{} + wantErrorCode int + }{ + { + code: TxMsg, data: []interface{}{}, + wantErrorCode: ErrNoStatusMsg, + }, + { + code: StatusMsg, data: statusMsgData{10, NetworkId, td, currentBlock, genesis}, + wantErrorCode: ErrProtocolVersionMismatch, + }, + { + code: StatusMsg, data: statusMsgData{ProtocolVersion, 999, td, currentBlock, genesis}, + wantErrorCode: ErrNetworkIdMismatch, + }, + { + code: StatusMsg, data: statusMsgData{ProtocolVersion, NetworkId, td, currentBlock, common.Hash{3}}, + wantErrorCode: ErrGenesisBlockMismatch, + }, + } + for _, test := range tests { + // first outgoing msg should be StatusMsg. + err := p2p.ExpectMsg(eth, StatusMsg, &statusMsgData{ + ProtocolVersion: ProtocolVersion, + NetworkId: NetworkId, + TD: td, + CurrentBlock: currentBlock, + GenesisBlock: genesis, + }) + if err != nil { + t.Fatalf("incorrect outgoing status: %v", err) + } - eth.reset() - go eth.run() - statusMsg = p2p.NewMsg(0, uint32(49), uint32(0), td, currentBlock, []byte{3}) - eth.In(statusMsg) - eth.checkError(ErrGenesisBlockMismatch, delay) + // the send call might hang until reset because + // the protocol might not read the payload. + go p2p.Send(eth, test.code, test.data) + eth.checkError(test.wantErrorCode, 1*time.Second) + eth.reset() + go eth.run() + } } |