cmd/devp2p/internal/ethtest: run test suite as Go unit test (#22698)

This change adds a Go unit test that runs the protocol test suite
against the go-ethereum implementation of the eth protocol.

cmd/devp2p/internal/ethtest/chain.go

@@ -34,6 +34,7 @@ import (
 )
 
 type Chain struct {
+	genesis     core.Genesis
 	blocks      []*types.Block
 	chainConfig *params.ChainConfig
 }
@@ -124,16 +125,34 @@ func (c *Chain) GetHeaders(req GetBlockHeaders) (BlockHeaders, error) {
 // loadChain takes the given chain.rlp file, and decodes and returns
 // the blocks from the file.
 func loadChain(chainfile string, genesis string) (*Chain, error) {
-	chainConfig, err := ioutil.ReadFile(genesis)
+	gen, err := loadGenesis(genesis)
 	if err != nil {
 		return nil, err
 	}
-	var gen core.Genesis
-	if err := json.Unmarshal(chainConfig, &gen); err != nil {
-		return nil, err
-	}
 	gblock := gen.ToBlock(nil)
 
+	blocks, err := blocksFromFile(chainfile, gblock)
+	if err != nil {
+		return nil, err
+	}
+
+	c := &Chain{genesis: gen, blocks: blocks, chainConfig: gen.Config}
+	return c, nil
+}
+
+func loadGenesis(genesisFile string) (core.Genesis, error) {
+	chainConfig, err := ioutil.ReadFile(genesisFile)
+	if err != nil {
+		return core.Genesis{}, err
+	}
+	var gen core.Genesis
+	if err := json.Unmarshal(chainConfig, &gen); err != nil {
+		return core.Genesis{}, err
+	}
+	return gen, nil
+}
+
+func blocksFromFile(chainfile string, gblock *types.Block) ([]*types.Block, error) {
 	// Load chain.rlp.
 	fh, err := os.Open(chainfile)
 	if err != nil {
@@ -161,7 +180,5 @@ func loadChain(chainfile string, genesis string) (*Chain, error) {
 		}
 		blocks = append(blocks, &b)
 	}
-
-	c := &Chain{blocks: blocks, chainConfig: gen.Config}
-	return c, nil
+	return blocks, nil
 }

cmd/devp2p/internal/ethtest/eth66_suite.go

@@ -41,6 +41,7 @@ func (s *Suite) Is_66(t *utesting.T) {
 // make sure the chain head is correct.
 func (s *Suite) TestStatus_66(t *utesting.T) {
 	conn := s.dial66(t)
+	defer conn.Close()
 	// get protoHandshake
 	conn.handshake(t)
 	// get status
@@ -60,6 +61,7 @@ func (s *Suite) TestStatus_66(t *utesting.T) {
 // an eth66 `GetBlockHeaders` request and that the response is accurate.
 func (s *Suite) TestGetBlockHeaders_66(t *utesting.T) {
 	conn := s.setupConnection66(t)
+	defer conn.Close()
 	// get block headers
 	req := &eth.GetBlockHeadersPacket66{
 		RequestId: 3,
@@ -84,6 +86,8 @@ func (s *Suite) TestGetBlockHeaders_66(t *utesting.T) {
 func (s *Suite) TestSimultaneousRequests_66(t *utesting.T) {
 	// create two connections
 	conn1, conn2 := s.setupConnection66(t), s.setupConnection66(t)
+	defer conn1.Close()
+	defer conn2.Close()
 	// create two requests
 	req1 := &eth.GetBlockHeadersPacket66{
 		RequestId: 111,
@@ -122,6 +126,9 @@ func (s *Suite) TestSimultaneousRequests_66(t *utesting.T) {
 // propagated to the given node's peer(s) on the eth66 protocol.
 func (s *Suite) TestBroadcast_66(t *utesting.T) {
 	sendConn, receiveConn := s.setupConnection66(t), s.setupConnection66(t)
+	defer sendConn.Close()
+	defer receiveConn.Close()
+
 	nextBlock := len(s.chain.blocks)
 	blockAnnouncement := &NewBlock{
 		Block: s.fullChain.blocks[nextBlock],
@@ -141,6 +148,7 @@ func (s *Suite) TestBroadcast_66(t *utesting.T) {
 // the eth66 protocol.
 func (s *Suite) TestGetBlockBodies_66(t *utesting.T) {
 	conn := s.setupConnection66(t)
+	defer conn.Close()
 	// create block bodies request
 	id := uint64(55)
 	req := &eth.GetBlockBodiesPacket66{
@@ -195,17 +203,20 @@ func (s *Suite) TestLargeAnnounce_66(t *utesting.T) {
 			t.Fatalf("could not write to connection: %v", err)
 		}
 		// Invalid announcement, check that peer disconnected
-		switch msg := sendConn.ReadAndServe(s.chain, timeout).(type) {
+		switch msg := sendConn.ReadAndServe(s.chain, time.Second*8).(type) {
 		case *Disconnect:
 		case *Error:
 			break
 		default:
 			t.Fatalf("unexpected: %s wanted disconnect", pretty.Sdump(msg))
 		}
+		sendConn.Close()
 	}
 	// Test the last block as a valid block
-	sendConn := s.setupConnection66(t)
-	receiveConn := s.setupConnection66(t)
+	sendConn, receiveConn := s.setupConnection66(t), s.setupConnection66(t)
+	defer sendConn.Close()
+	defer receiveConn.Close()
+
 	s.testAnnounce66(t, sendConn, receiveConn, blocks[3])
 	// update test suite chain
 	s.chain.blocks = append(s.chain.blocks, s.fullChain.blocks[nextBlock])
@@ -216,12 +227,17 @@ func (s *Suite) TestLargeAnnounce_66(t *utesting.T) {
 }
 
 func (s *Suite) TestOldAnnounce_66(t *utesting.T) {
-	s.oldAnnounce(t, s.setupConnection66(t), s.setupConnection66(t))
+	sendConn, recvConn := s.setupConnection66(t), s.setupConnection66(t)
+	defer sendConn.Close()
+	defer recvConn.Close()
+
+	s.oldAnnounce(t, sendConn, recvConn)
 }
 
 // TestMaliciousHandshake_66 tries to send malicious data during the handshake.
 func (s *Suite) TestMaliciousHandshake_66(t *utesting.T) {
 	conn := s.dial66(t)
+	defer conn.Close()
 	// write hello to client
 	pub0 := crypto.FromECDSAPub(&conn.ourKey.PublicKey)[1:]
 	handshakes := []*Hello{
@@ -295,6 +311,7 @@ func (s *Suite) TestMaliciousHandshake_66(t *utesting.T) {
 // TestMaliciousStatus_66 sends a status package with a large total difficulty.
 func (s *Suite) TestMaliciousStatus_66(t *utesting.T) {
 	conn := s.dial66(t)
+	defer conn.Close()
 	// get protoHandshake
 	conn.handshake(t)
 	status := &Status{
@@ -334,23 +351,37 @@ func (s *Suite) TestTransaction_66(t *utesting.T) {
 }
 
 func (s *Suite) TestMaliciousTx_66(t *utesting.T) {
-	tests := []*types.Transaction{
+	badTxs := []*types.Transaction{
 		getOldTxFromChain(t, s),
 		invalidNonceTx(t, s),
 		hugeAmount(t, s),
 		hugeGasPrice(t, s),
 		hugeData(t, s),
 	}
-	for i, tx := range tests {
+	sendConn := s.setupConnection66(t)
+	defer sendConn.Close()
+	// set up receiving connection before sending txs to make sure
+	// no announcements are missed
+	recvConn := s.setupConnection66(t)
+	defer recvConn.Close()
+
+	for i, tx := range badTxs {
 		t.Logf("Testing malicious tx propagation: %v\n", i)
-		sendFailingTx66(t, s, tx)
+		if err := sendConn.Write(&Transactions{tx}); err != nil {
+			t.Fatalf("could not write to connection: %v", err)
+		}
+
 	}
+	// check to make sure bad txs aren't propagated
+	waitForTxPropagation(t, s, badTxs, recvConn)
 }
 
 // TestZeroRequestID_66 checks that a request ID of zero is still handled
 // by the node.
 func (s *Suite) TestZeroRequestID_66(t *utesting.T) {
 	conn := s.setupConnection66(t)
+	defer conn.Close()
+
 	req := &eth.GetBlockHeadersPacket66{
 		RequestId: 0,
 		GetBlockHeadersPacket: &eth.GetBlockHeadersPacket{
@@ -367,6 +398,7 @@ func (s *Suite) TestZeroRequestID_66(t *utesting.T) {
 // concurrently to a single node.
 func (s *Suite) TestSameRequestID_66(t *utesting.T) {
 	conn := s.setupConnection66(t)
+	defer conn.Close()
 	// create two separate requests with same ID
 	reqID := uint64(1234)
 	req1 := &eth.GetBlockHeadersPacket66{

cmd/devp2p/internal/ethtest/eth66_suiteHelpers.go

@@ -238,14 +238,10 @@ func (c *Conn) waitForBlock66(block *types.Block) error {
 
 func sendSuccessfulTx66(t *utesting.T, s *Suite, tx *types.Transaction) {
 	sendConn := s.setupConnection66(t)
+	defer sendConn.Close()
 	sendSuccessfulTxWithConn(t, s, tx, sendConn)
 }
 
-func sendFailingTx66(t *utesting.T, s *Suite, tx *types.Transaction) {
-	sendConn, recvConn := s.setupConnection66(t), s.setupConnection66(t)
-	sendFailingTxWithConns(t, s, tx, sendConn, recvConn)
-}
-
 func (s *Suite) getBlockHeaders66(t *utesting.T, conn *Conn, req eth.Packet, expectedID uint64) BlockHeaders {
 	if err := conn.write66(req, GetBlockHeaders{}.Code()); err != nil {
 		t.Fatalf("could not write to connection: %v", err)

cmd/devp2p/internal/ethtest/suite.go

@@ -69,20 +69,20 @@ func NewSuite(dest *enode.Node, chainfile string, genesisfile string) (*Suite, e
 func (s *Suite) AllEthTests() []utesting.Test {
 	return []utesting.Test{
 		// status
-		{Name: "Status", Fn: s.TestStatus},
-		{Name: "Status_66", Fn: s.TestStatus_66},
+		{Name: "TestStatus", Fn: s.TestStatus},
+		{Name: "TestStatus_66", Fn: s.TestStatus_66},
 		// get block headers
-		{Name: "GetBlockHeaders", Fn: s.TestGetBlockHeaders},
-		{Name: "GetBlockHeaders_66", Fn: s.TestGetBlockHeaders_66},
+		{Name: "TestGetBlockHeaders", Fn: s.TestGetBlockHeaders},
+		{Name: "TestGetBlockHeaders_66", Fn: s.TestGetBlockHeaders_66},
 		{Name: "TestSimultaneousRequests_66", Fn: s.TestSimultaneousRequests_66},
 		{Name: "TestSameRequestID_66", Fn: s.TestSameRequestID_66},
 		{Name: "TestZeroRequestID_66", Fn: s.TestZeroRequestID_66},
 		// get block bodies
-		{Name: "GetBlockBodies", Fn: s.TestGetBlockBodies},
-		{Name: "GetBlockBodies_66", Fn: s.TestGetBlockBodies_66},
+		{Name: "TestGetBlockBodies", Fn: s.TestGetBlockBodies},
+		{Name: "TestGetBlockBodies_66", Fn: s.TestGetBlockBodies_66},
 		// broadcast
-		{Name: "Broadcast", Fn: s.TestBroadcast},
-		{Name: "Broadcast_66", Fn: s.TestBroadcast_66},
+		{Name: "TestBroadcast", Fn: s.TestBroadcast},
+		{Name: "TestBroadcast_66", Fn: s.TestBroadcast_66},
 		{Name: "TestLargeAnnounce", Fn: s.TestLargeAnnounce},
 		{Name: "TestLargeAnnounce_66", Fn: s.TestLargeAnnounce_66},
 		{Name: "TestOldAnnounce", Fn: s.TestOldAnnounce},
@@ -91,44 +91,44 @@ func (s *Suite) AllEthTests() []utesting.Test {
 		{Name: "TestMaliciousHandshake", Fn: s.TestMaliciousHandshake},
 		{Name: "TestMaliciousStatus", Fn: s.TestMaliciousStatus},
 		{Name: "TestMaliciousHandshake_66", Fn: s.TestMaliciousHandshake_66},
-		{Name: "TestMaliciousStatus_66", Fn: s.TestMaliciousStatus},
+		{Name: "TestMaliciousStatus_66", Fn: s.TestMaliciousStatus_66},
 		// test transactions
-		{Name: "TestTransactions", Fn: s.TestTransaction},
-		{Name: "TestTransactions_66", Fn: s.TestTransaction_66},
-		{Name: "TestMaliciousTransactions", Fn: s.TestMaliciousTx},
-		{Name: "TestMaliciousTransactions_66", Fn: s.TestMaliciousTx_66},
+		{Name: "TestTransaction", Fn: s.TestTransaction},
+		{Name: "TestTransaction_66", Fn: s.TestTransaction_66},
+		{Name: "TestMaliciousTx", Fn: s.TestMaliciousTx},
+		{Name: "TestMaliciousTx_66", Fn: s.TestMaliciousTx_66},
 	}
 }
 
 func (s *Suite) EthTests() []utesting.Test {
 	return []utesting.Test{
-		{Name: "Status", Fn: s.TestStatus},
-		{Name: "GetBlockHeaders", Fn: s.TestGetBlockHeaders},
-		{Name: "GetBlockBodies", Fn: s.TestGetBlockBodies},
-		{Name: "Broadcast", Fn: s.TestBroadcast},
+		{Name: "TestStatus", Fn: s.TestStatus},
+		{Name: "TestGetBlockHeaders", Fn: s.TestGetBlockHeaders},
+		{Name: "TestGetBlockBodies", Fn: s.TestGetBlockBodies},
+		{Name: "TestBroadcast", Fn: s.TestBroadcast},
 		{Name: "TestLargeAnnounce", Fn: s.TestLargeAnnounce},
 		{Name: "TestMaliciousHandshake", Fn: s.TestMaliciousHandshake},
 		{Name: "TestMaliciousStatus", Fn: s.TestMaliciousStatus},
-		{Name: "TestMaliciousStatus_66", Fn: s.TestMaliciousStatus},
-		{Name: "TestTransactions", Fn: s.TestTransaction},
-		{Name: "TestMaliciousTransactions", Fn: s.TestMaliciousTx},
+		{Name: "TestTransaction", Fn: s.TestTransaction},
+		{Name: "TestMaliciousTx", Fn: s.TestMaliciousTx},
 	}
 }
 
 func (s *Suite) Eth66Tests() []utesting.Test {
 	return []utesting.Test{
 		// only proceed with eth66 test suite if node supports eth 66 protocol
-		{Name: "Status_66", Fn: s.TestStatus_66},
-		{Name: "GetBlockHeaders_66", Fn: s.TestGetBlockHeaders_66},
+		{Name: "TestStatus_66", Fn: s.TestStatus_66},
+		{Name: "TestGetBlockHeaders_66", Fn: s.TestGetBlockHeaders_66},
 		{Name: "TestSimultaneousRequests_66", Fn: s.TestSimultaneousRequests_66},
 		{Name: "TestSameRequestID_66", Fn: s.TestSameRequestID_66},
 		{Name: "TestZeroRequestID_66", Fn: s.TestZeroRequestID_66},
-		{Name: "GetBlockBodies_66", Fn: s.TestGetBlockBodies_66},
-		{Name: "Broadcast_66", Fn: s.TestBroadcast_66},
+		{Name: "TestGetBlockBodies_66", Fn: s.TestGetBlockBodies_66},
+		{Name: "TestBroadcast_66", Fn: s.TestBroadcast_66},
 		{Name: "TestLargeAnnounce_66", Fn: s.TestLargeAnnounce_66},
 		{Name: "TestMaliciousHandshake_66", Fn: s.TestMaliciousHandshake_66},
-		{Name: "TestTransactions_66", Fn: s.TestTransaction_66},
-		{Name: "TestMaliciousTransactions_66", Fn: s.TestMaliciousTx_66},
+		{Name: "TestMaliciousStatus_66", Fn: s.TestMaliciousStatus_66},
+		{Name: "TestTransaction_66", Fn: s.TestTransaction_66},
+		{Name: "TestMaliciousTx_66", Fn: s.TestMaliciousTx_66},
 	}
 }
 
@@ -140,6 +140,7 @@ func (s *Suite) TestStatus(t *utesting.T) {
 	if err != nil {
 		t.Fatalf("could not dial: %v", err)
 	}
+	defer conn.Close()
 	// get protoHandshake
 	conn.handshake(t)
 	// get status
@@ -157,6 +158,7 @@ func (s *Suite) TestMaliciousStatus(t *utesting.T) {
 	if err != nil {
 		t.Fatalf("could not dial: %v", err)
 	}
+	defer conn.Close()
 	// get protoHandshake
 	conn.handshake(t)
 	status := &Status{
@@ -191,6 +193,7 @@ func (s *Suite) TestGetBlockHeaders(t *utesting.T) {
 	if err != nil {
 		t.Fatalf("could not dial: %v", err)
 	}
+	defer conn.Close()
 
 	conn.handshake(t)
 	conn.statusExchange(t, s.chain, nil)
@@ -229,6 +232,7 @@ func (s *Suite) TestGetBlockBodies(t *utesting.T) {
 	if err != nil {
 		t.Fatalf("could not dial: %v", err)
 	}
+	defer conn.Close()
 
 	conn.handshake(t)
 	conn.statusExchange(t, s.chain, nil)
@@ -253,6 +257,9 @@ func (s *Suite) TestGetBlockBodies(t *utesting.T) {
 // propagated to the given node's peer(s).
 func (s *Suite) TestBroadcast(t *utesting.T) {
 	sendConn, receiveConn := s.setupConnection(t), s.setupConnection(t)
+	defer sendConn.Close()
+	defer receiveConn.Close()
+
 	nextBlock := len(s.chain.blocks)
 	blockAnnouncement := &NewBlock{
 		Block: s.fullChain.blocks[nextBlock],
@@ -273,6 +280,7 @@ func (s *Suite) TestMaliciousHandshake(t *utesting.T) {
 	if err != nil {
 		t.Fatalf("could not dial: %v", err)
 	}
+	defer conn.Close()
 	// write hello to client
 	pub0 := crypto.FromECDSAPub(&conn.ourKey.PublicKey)[1:]
 	handshakes := []*Hello{
@@ -372,17 +380,21 @@ func (s *Suite) TestLargeAnnounce(t *utesting.T) {
 			t.Fatalf("could not write to connection: %v", err)
 		}
 		// Invalid announcement, check that peer disconnected
-		switch msg := sendConn.ReadAndServe(s.chain, timeout).(type) {
+		switch msg := sendConn.ReadAndServe(s.chain, time.Second*8).(type) {
 		case *Disconnect:
 		case *Error:
 			break
 		default:
 			t.Fatalf("unexpected: %s wanted disconnect", pretty.Sdump(msg))
 		}
+		sendConn.Close()
 	}
 	// Test the last block as a valid block
 	sendConn := s.setupConnection(t)
 	receiveConn := s.setupConnection(t)
+	defer sendConn.Close()
+	defer receiveConn.Close()
+
 	s.testAnnounce(t, sendConn, receiveConn, blocks[3])
 	// update test suite chain
 	s.chain.blocks = append(s.chain.blocks, s.fullChain.blocks[nextBlock])
@@ -393,7 +405,11 @@ func (s *Suite) TestLargeAnnounce(t *utesting.T) {
 }
 
 func (s *Suite) TestOldAnnounce(t *utesting.T) {
-	s.oldAnnounce(t, s.setupConnection(t), s.setupConnection(t))
+	sendConn, recvConn := s.setupConnection(t), s.setupConnection(t)
+	defer sendConn.Close()
+	defer recvConn.Close()
+
+	s.oldAnnounce(t, sendConn, recvConn)
 }
 
 func (s *Suite) oldAnnounce(t *utesting.T, sendConn, receiveConn *Conn) {
@@ -406,11 +422,19 @@ func (s *Suite) oldAnnounce(t *utesting.T, sendConn, receiveConn *Conn) {
 		t.Fatalf("could not write to connection: %v", err)
 	}
 
-	switch msg := receiveConn.ReadAndServe(s.chain, timeout*2).(type) {
+	switch msg := receiveConn.ReadAndServe(s.chain, time.Second*8).(type) {
 	case *NewBlock:
-		t.Fatalf("unexpected: block propagated: %s", pretty.Sdump(msg))
+		block := *msg
+		if block.Block.Hash() == oldBlockAnnounce.Block.Hash() {
+			t.Fatalf("unexpected: block propagated: %s", pretty.Sdump(msg))
+		}
 	case *NewBlockHashes:
-		t.Fatalf("unexpected: block announced: %s", pretty.Sdump(msg))
+		hashes := *msg
+		for _, hash := range hashes {
+			if hash.Hash == oldBlockAnnounce.Block.Hash() {
+				t.Fatalf("unexpected: block announced: %s", pretty.Sdump(msg))
+			}
+		}
 	case *Error:
 		errMsg := *msg
 		// check to make sure error is timeout (propagation didn't come through == test successful)
@@ -502,15 +526,27 @@ func (s *Suite) TestTransaction(t *utesting.T) {
 }
 
 func (s *Suite) TestMaliciousTx(t *utesting.T) {
-	tests := []*types.Transaction{
+	badTxs := []*types.Transaction{
 		getOldTxFromChain(t, s),
 		invalidNonceTx(t, s),
 		hugeAmount(t, s),
 		hugeGasPrice(t, s),
 		hugeData(t, s),
 	}
-	for i, tx := range tests {
+	sendConn := s.setupConnection(t)
+	defer sendConn.Close()
+	// set up receiving connection before sending txs to make sure
+	// no announcements are missed
+	recvConn := s.setupConnection(t)
+	defer recvConn.Close()
+
+	for i, tx := range badTxs {
 		t.Logf("Testing malicious tx propagation: %v\n", i)
-		sendFailingTx(t, s, tx)
+		if err := sendConn.Write(&Transactions{tx}); err != nil {
+			t.Fatalf("could not write to connection: %v", err)
+		}
+
 	}
+	// check to make sure bad txs aren't propagated
+	waitForTxPropagation(t, s, badTxs, recvConn)
 }

cmd/devp2p/internal/ethtest/suite_test.go

@@ -0,0 +1,99 @@
+// Copyright 2020 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 ethtest
+
+import (
+	"os"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/eth"
+	"github.com/ethereum/go-ethereum/eth/ethconfig"
+	"github.com/ethereum/go-ethereum/internal/utesting"
+	"github.com/ethereum/go-ethereum/node"
+	"github.com/ethereum/go-ethereum/p2p"
+)
+
+var (
+	genesisFile   = "./testdata/genesis.json"
+	halfchainFile = "./testdata/halfchain.rlp"
+	fullchainFile = "./testdata/chain.rlp"
+)
+
+func TestEthSuite(t *testing.T) {
+	geth, err := runGeth()
+	if err != nil {
+		t.Fatalf("could not run geth: %v", err)
+	}
+	defer geth.Close()
+
+	suite, err := NewSuite(geth.Server().Self(), fullchainFile, genesisFile)
+	if err != nil {
+		t.Fatalf("could not create new test suite: %v", err)
+	}
+	for _, test := range suite.AllEthTests() {
+		t.Run(test.Name, func(t *testing.T) {
+			result := utesting.RunTAP([]utesting.Test{{Name: test.Name, Fn: test.Fn}}, os.Stdout)
+			if result[0].Failed {
+				t.Fatal()
+			}
+		})
+	}
+}
+
+// runGeth creates and starts a geth node
+func runGeth() (*node.Node, error) {
+	stack, err := node.New(&node.Config{
+		P2P: p2p.Config{
+			ListenAddr:  "127.0.0.1:0",
+			NoDiscovery: true,
+			MaxPeers:    10, // in case a test requires multiple connections, can be changed in the future
+			NoDial:      true,
+		},
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	err = setupGeth(stack)
+	if err != nil {
+		stack.Close()
+		return nil, err
+	}
+	if err = stack.Start(); err != nil {
+		stack.Close()
+		return nil, err
+	}
+	return stack, nil
+}
+
+func setupGeth(stack *node.Node) error {
+	chain, err := loadChain(halfchainFile, genesisFile)
+	if err != nil {
+		return err
+	}
+
+	backend, err := eth.New(stack, &ethconfig.Config{
+		Genesis:   &chain.genesis,
+		NetworkId: chain.genesis.Config.ChainID.Uint64(), // 19763
+	})
+	if err != nil {
+		return err
+	}
+
+	_, err = backend.BlockChain().InsertChain(chain.blocks[1:])
+	return err
+}

cmd/devp2p/internal/ethtest/transaction.go

@@ -30,6 +30,7 @@ var faucetKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c666
 
 func sendSuccessfulTx(t *utesting.T, s *Suite, tx *types.Transaction) {
 	sendConn := s.setupConnection(t)
+	defer sendConn.Close()
 	sendSuccessfulTxWithConn(t, s, tx, sendConn)
 }
 
@@ -65,29 +66,30 @@ func sendSuccessfulTxWithConn(t *utesting.T, s *Suite, tx *types.Transaction, se
 	}
 }
 
-func sendFailingTx(t *utesting.T, s *Suite, tx *types.Transaction) {
-	sendConn, recvConn := s.setupConnection(t), s.setupConnection(t)
-	sendFailingTxWithConns(t, s, tx, sendConn, recvConn)
-}
-
-func sendFailingTxWithConns(t *utesting.T, s *Suite, tx *types.Transaction, sendConn, recvConn *Conn) {
-	// Wait for a transaction announcement
-	switch msg := recvConn.ReadAndServe(s.chain, timeout).(type) {
-	case *NewPooledTransactionHashes:
-		break
-	default:
-		t.Logf("unexpected message, logging: %v", pretty.Sdump(msg))
-	}
-	// Send the transaction
-	if err := sendConn.Write(&Transactions{tx}); err != nil {
-		t.Fatal(err)
-	}
+func waitForTxPropagation(t *utesting.T, s *Suite, txs []*types.Transaction, recvConn *Conn) {
 	// Wait for another transaction announcement
-	switch msg := recvConn.ReadAndServe(s.chain, timeout).(type) {
+	switch msg := recvConn.ReadAndServe(s.chain, time.Second*8).(type) {
 	case *Transactions:
-		t.Fatalf("Received unexpected transaction announcement: %v", msg)
+		// check to see if any of the failing txs were in the announcement
+		recvTxs := make([]common.Hash, len(*msg))
+		for i, recvTx := range *msg {
+			recvTxs[i] = recvTx.Hash()
+		}
+		badTxs := containsTxs(recvTxs, txs)
+		if len(badTxs) > 0 {
+			for _, tx := range badTxs {
+				t.Logf("received bad tx: %v", tx)
+			}
+			t.Fatalf("received %d bad txs", len(badTxs))
+		}
 	case *NewPooledTransactionHashes:
-		t.Fatalf("Received unexpected pooledTx announcement: %v", msg)
+		badTxs := containsTxs(*msg, txs)
+		if len(badTxs) > 0 {
+			for _, tx := range badTxs {
+				t.Logf("received bad tx: %v", tx)
+			}
+			t.Fatalf("received %d bad txs", len(badTxs))
+		}
 	case *Error:
 		// Transaction should not be announced -> wait for timeout
 		return
@@ -96,6 +98,20 @@ func sendFailingTxWithConns(t *utesting.T, s *Suite, tx *types.Transaction, send
 	}
 }
 
+// containsTxs checks whether the hashes of the received transactions are present in
+// the given set of txs
+func containsTxs(recvTxs []common.Hash, txs []*types.Transaction) []common.Hash {
+	containedTxs := make([]common.Hash, 0)
+	for _, recvTx := range recvTxs {
+		for _, tx := range txs {
+			if recvTx == tx.Hash() {
+				containedTxs = append(containedTxs, recvTx)
+			}
+		}
+	}
+	return containedTxs
+}
+
 func unknownTx(t *utesting.T, s *Suite) *types.Transaction {
 	tx := getNextTxFromChain(t, s)
 	var to common.Address

cmd/devp2p/internal/ethtest/types.go

@@ -178,8 +178,7 @@ func (c *Conn) Read() Message {
 func (c *Conn) ReadAndServe(chain *Chain, timeout time.Duration) Message {
 	start := time.Now()
 	for time.Since(start) < timeout {
-		timeout := time.Now().Add(10 * time.Second)
-		c.SetReadDeadline(timeout)
+		c.SetReadDeadline(time.Now().Add(5 * time.Second))
 		switch msg := c.Read().(type) {
 		case *Ping:
 			c.Write(&Pong{})