コード例 #1
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// Handshake executes the eth protocol handshake, negotiating version number,
// network IDs, difficulties, head and genesis blocks.
func (p *peer) Handshake(network int, td *big.Int, head common.Hash, genesis common.Hash) error {
	// Send out own handshake in a new thread
	errc := make(chan error, 2)
	var status statusData // safe to read after two values have been received from errc

	go func() {
		errc <- p2p.Send(p.rw, StatusMsg, &statusData{
			ProtocolVersion: uint32(p.version),
			NetworkId:       uint32(network),
			TD:              td,
			CurrentBlock:    head,
			GenesisBlock:    genesis,
		})
	}()
	go func() {
		errc <- p.readStatus(network, &status, genesis)
	}()
	timeout := time.NewTimer(handshakeTimeout)
	defer timeout.Stop()
	for i := 0; i < 2; i++ {
		select {
		case err := <-errc:
			if err != nil {
				return err
			}
		case <-timeout.C:
			return p2p.DiscReadTimeout
		}
	}
	p.td, p.head = status.TD, status.CurrentBlock
	return nil
}
コード例 #2
0
func TestPeerDeliver(t *testing.T) {
	// Start a tester and execute the handshake
	tester, err := startTestPeerInited()
	if err != nil {
		t.Fatalf("failed to start initialized peer: %v", err)
	}
	defer tester.stream.Close()

	// Watch for all inbound messages
	arrived := make(chan struct{}, 1)
	tester.client.Watch(Filter{
		Fn: func(message *Message) {
			arrived <- struct{}{}
		},
	})
	// Construct a message and deliver it to the tester peer
	message := NewMessage([]byte("peer broadcast test message"))
	envelope, err := message.Wrap(DefaultPoW, Options{
		TTL: DefaultTTL,
	})
	if err != nil {
		t.Fatalf("failed to wrap message: %v", err)
	}
	if err := p2p.Send(tester.stream, messagesCode, []*Envelope{envelope}); err != nil {
		t.Fatalf("failed to transfer message: %v", err)
	}
	// Check that the message is delivered upstream
	select {
	case <-arrived:
	case <-time.After(time.Second):
		t.Fatalf("message delivery timeout")
	}
	// Check that a resend is not delivered
	if err := p2p.Send(tester.stream, messagesCode, []*Envelope{envelope}); err != nil {
		t.Fatalf("failed to transfer message: %v", err)
	}
	select {
	case <-time.After(2 * transmissionCycle):
	case <-arrived:
		t.Fatalf("repeating message arrived")
	}
}
コード例 #3
0
func testGetReceipt(t *testing.T, protocol int) {
	// Define three accounts to simulate transactions with
	acc1Key, _ := crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a")
	acc2Key, _ := crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee")
	acc1Addr := crypto.PubkeyToAddress(acc1Key.PublicKey)
	acc2Addr := crypto.PubkeyToAddress(acc2Key.PublicKey)

	// Create a chain generator with some simple transactions (blatantly stolen from @fjl/chain_makerts_test)
	generator := func(i int, block *core.BlockGen) {
		switch i {
		case 0:
			// In block 1, the test bank sends account #1 some ether.
			tx, _ := types.NewTransaction(block.TxNonce(testBankAddress), acc1Addr, big.NewInt(10000), params.TxGas, nil, nil).SignECDSA(testBankKey)
			block.AddTx(tx)
		case 1:
			// In block 2, the test bank sends some more ether to account #1.
			// acc1Addr passes it on to account #2.
			tx1, _ := types.NewTransaction(block.TxNonce(testBankAddress), acc1Addr, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(testBankKey)
			tx2, _ := types.NewTransaction(block.TxNonce(acc1Addr), acc2Addr, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(acc1Key)
			block.AddTx(tx1)
			block.AddTx(tx2)
		case 2:
			// Block 3 is empty but was mined by account #2.
			block.SetCoinbase(acc2Addr)
			block.SetExtra([]byte("yeehaw"))
		case 3:
			// Block 4 includes blocks 2 and 3 as uncle headers (with modified extra data).
			b2 := block.PrevBlock(1).Header()
			b2.Extra = []byte("foo")
			block.AddUncle(b2)
			b3 := block.PrevBlock(2).Header()
			b3.Extra = []byte("foo")
			block.AddUncle(b3)
		}
	}
	// Assemble the test environment
	pm := newTestProtocolManagerMust(t, false, 4, generator, nil)
	peer, _ := newTestPeer("peer", protocol, pm, true)
	defer peer.close()

	// Collect the hashes to request, and the response to expect
	hashes, receipts := []common.Hash{}, []types.Receipts{}
	for i := uint64(0); i <= pm.blockchain.CurrentBlock().NumberU64(); i++ {
		block := pm.blockchain.GetBlockByNumber(i)

		hashes = append(hashes, block.Hash())
		receipts = append(receipts, core.GetBlockReceipts(pm.chaindb, block.Hash()))
	}
	// Send the hash request and verify the response
	p2p.Send(peer.app, 0x0f, hashes)
	if err := p2p.ExpectMsg(peer.app, 0x10, receipts); err != nil {
		t.Errorf("receipts mismatch: %v", err)
	}
}
コード例 #4
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// SendNewBlockHashes announces the availability of a number of blocks through
// a hash notification.
func (p *peer) SendNewBlockHashes(hashes []common.Hash, numbers []uint64) error {
	for _, hash := range hashes {
		p.knownBlocks.Add(hash)
	}
	request := make(newBlockHashesData, len(hashes))
	for i := 0; i < len(hashes); i++ {
		request[i].Hash = hashes[i]
		request[i].Number = numbers[i]
	}
	return p2p.Send(p.rw, NewBlockHashesMsg, request)
}
コード例 #5
0
// handshake simulates a trivial handshake that expects the same state from the
// remote side as we are simulating locally.
func (p *testPeer) handshake(t *testing.T, td *big.Int, head common.Hash, genesis common.Hash) {
	msg := &statusData{
		ProtocolVersion: uint32(p.version),
		NetworkId:       uint32(NetworkId),
		TD:              td,
		CurrentBlock:    head,
		GenesisBlock:    genesis,
	}
	if err := p2p.ExpectMsg(p.app, StatusMsg, msg); err != nil {
		t.Fatalf("status recv: %v", err)
	}
	if err := p2p.Send(p.app, StatusMsg, msg); err != nil {
		t.Fatalf("status send: %v", err)
	}
}
コード例 #6
0
ファイル: protocol_test.go プロジェクト: este-xx/go-expanse
func (p *testPeer) handshake(t *testing.T) {
	td, currentBlock, genesis := p.pm.chainman.Status()
	msg := &statusData{
		ProtocolVersion: uint32(p.pm.protVer),
		NetworkId:       uint32(p.pm.netId),
		TD:              td,
		CurrentBlock:    currentBlock,
		GenesisBlock:    genesis,
	}
	if err := p2p.ExpectMsg(p, StatusMsg, msg); err != nil {
		t.Fatalf("status recv: %v", err)
	}
	if err := p2p.Send(p, StatusMsg, msg); err != nil {
		t.Fatalf("status send: %v", err)
	}
}
コード例 #7
0
ファイル: protocol_test.go プロジェクト: este-xx/go-expanse
func TestStatusMsgErrors(t *testing.T) {
	pm := newProtocolManagerForTesting(nil)
	td, currentBlock, genesis := pm.chainman.Status()
	defer pm.Stop()

	tests := []struct {
		code      uint64
		data      interface{}
		wantError error
	}{
		{
			code: TxMsg, data: []interface{}{},
			wantError: errResp(ErrNoStatusMsg, "first msg has code 2 (!= 0)"),
		},
		{
			code: StatusMsg, data: statusData{10, NetworkId, td, currentBlock, genesis},
			wantError: errResp(ErrProtocolVersionMismatch, "10 (!= 0)"),
		},
		{
			code: StatusMsg, data: statusData{uint32(ProtocolVersions[0]), 999, td, currentBlock, genesis},
			wantError: errResp(ErrNetworkIdMismatch, "999 (!= 1)"),
		},
		{
			code: StatusMsg, data: statusData{uint32(ProtocolVersions[0]), NetworkId, td, currentBlock, common.Hash{3}},
			wantError: errResp(ErrGenesisBlockMismatch, "0300000000000000000000000000000000000000000000000000000000000000 (!= %x)", genesis),
		},
	}

	for i, test := range tests {
		p, errc := newTestPeer(pm)
		// The send call might hang until reset because
		// the protocol might not read the payload.
		go p2p.Send(p, test.code, test.data)

		select {
		case err := <-errc:
			if err == nil {
				t.Errorf("test %d: protocol returned nil error, want %q", test.wantError)
			} else if err.Error() != test.wantError.Error() {
				t.Errorf("test %d: wrong error: got %q, want %q", i, err, test.wantError)
			}
		case <-time.After(2 * time.Second):
			t.Errorf("protocol did not shut down withing 2 seconds")
		}
		p.close()
	}
}
コード例 #8
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// broadcast iterates over the collection of envelopes and transmits yet unknown
// ones over the network.
func (self *peer) broadcast() error {
	// Fetch the envelopes and collect the unknown ones
	envelopes := self.host.envelopes()
	transmit := make([]*Envelope, 0, len(envelopes))
	for _, envelope := range envelopes {
		if !self.marked(envelope) {
			transmit = append(transmit, envelope)
			self.mark(envelope)
		}
	}
	// Transmit the unknown batch (potentially empty)
	if err := p2p.Send(self.ws, messagesCode, transmit); err != nil {
		return err
	}
	glog.V(logger.Detail).Infoln(self.peer, "broadcasted", len(transmit), "message(s)")
	return nil
}
コード例 #9
0
func testRecvTransactions(t *testing.T, protocol int) {
	txAdded := make(chan []*types.Transaction)
	pm := newTestProtocolManagerMust(t, false, 0, nil, txAdded)
	p, _ := newTestPeer("peer", protocol, pm, true)
	defer pm.Stop()
	defer p.close()

	tx := newTestTransaction(testAccount, 0, 0)
	if err := p2p.Send(p.app, TxMsg, []interface{}{tx}); err != nil {
		t.Fatalf("send error: %v", err)
	}
	select {
	case added := <-txAdded:
		if len(added) != 1 {
			t.Errorf("wrong number of added transactions: got %d, want 1", len(added))
		} else if added[0].Hash() != tx.Hash() {
			t.Errorf("added wrong tx hash: got %v, want %v", added[0].Hash(), tx.Hash())
		}
	case <-time.After(2 * time.Second):
		t.Errorf("no TxPreEvent received within 2 seconds")
	}
}
コード例 #10
0
func testGetBlockHashes(t *testing.T, protocol int) {
	pm := newTestProtocolManagerMust(t, false, downloader.MaxHashFetch+15, nil, nil)
	peer, _ := newTestPeer("peer", protocol, pm, true)
	defer peer.close()

	// Create a batch of tests for various scenarios
	limit := downloader.MaxHashFetch
	tests := []struct {
		origin common.Hash
		number int
		result int
	}{
		{common.Hash{}, 1, 0},                                   // Make sure non existent hashes don't return results
		{pm.blockchain.Genesis().Hash(), 1, 0},                  // There are no hashes to retrieve up from the genesis
		{pm.blockchain.GetBlockByNumber(5).Hash(), 5, 5},        // All the hashes including the genesis requested
		{pm.blockchain.GetBlockByNumber(5).Hash(), 10, 5},       // More hashes than available till the genesis requested
		{pm.blockchain.GetBlockByNumber(100).Hash(), 10, 10},    // All hashes available from the middle of the chain
		{pm.blockchain.CurrentBlock().Hash(), 10, 10},           // All hashes available from the head of the chain
		{pm.blockchain.CurrentBlock().Hash(), limit, limit},     // Request the maximum allowed hash count
		{pm.blockchain.CurrentBlock().Hash(), limit + 1, limit}, // Request more than the maximum allowed hash count
	}
	// Run each of the tests and verify the results against the chain
	for i, tt := range tests {
		// Assemble the hash response we would like to receive
		resp := make([]common.Hash, tt.result)
		if len(resp) > 0 {
			from := pm.blockchain.GetBlock(tt.origin).NumberU64() - 1
			for j := 0; j < len(resp); j++ {
				resp[j] = pm.blockchain.GetBlockByNumber(uint64(int(from) - j)).Hash()
			}
		}
		// Send the hash request and verify the response
		p2p.Send(peer.app, 0x03, getBlockHashesData{tt.origin, uint64(tt.number)})
		if err := p2p.ExpectMsg(peer.app, 0x04, resp); err != nil {
			t.Errorf("test %d: block hashes mismatch: %v", i, err)
		}
	}
}
コード例 #11
0
func testGetBlockHashesFromNumber(t *testing.T, protocol int) {
	pm := newTestProtocolManagerMust(t, false, downloader.MaxHashFetch+15, nil, nil)
	peer, _ := newTestPeer("peer", protocol, pm, true)
	defer peer.close()

	// Create a batch of tests for various scenarios
	limit := downloader.MaxHashFetch
	tests := []struct {
		origin uint64
		number int
		result int
	}{
		{pm.blockchain.CurrentBlock().NumberU64() + 1, 1, 0},     // Out of bounds requests should return empty
		{pm.blockchain.CurrentBlock().NumberU64(), 1, 1},         // Make sure the head hash can be retrieved
		{pm.blockchain.CurrentBlock().NumberU64() - 4, 5, 5},     // All hashes, including the head hash requested
		{pm.blockchain.CurrentBlock().NumberU64() - 4, 10, 5},    // More hashes requested than available till the head
		{pm.blockchain.CurrentBlock().NumberU64() - 100, 10, 10}, // All hashes available from the middle of the chain
		{0, 10, 10},           // All hashes available from the root of the chain
		{0, limit, limit},     // Request the maximum allowed hash count
		{0, limit + 1, limit}, // Request more than the maximum allowed hash count
		{0, 1, 1},             // Make sure the genesis hash can be retrieved
	}
	// Run each of the tests and verify the results against the chain
	for i, tt := range tests {
		// Assemble the hash response we would like to receive
		resp := make([]common.Hash, tt.result)
		for j := 0; j < len(resp); j++ {
			resp[j] = pm.blockchain.GetBlockByNumber(tt.origin + uint64(j)).Hash()
		}
		// Send the hash request and verify the response
		p2p.Send(peer.app, 0x08, getBlockHashesFromNumberData{tt.origin, uint64(tt.number)})
		if err := p2p.ExpectMsg(peer.app, 0x04, resp); err != nil {
			t.Errorf("test %d: block hashes mismatch: %v", i, err)
		}
	}
}
コード例 #12
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// RequestHeaders is a wrapper around the header query functions to fetch a
// single header. It is used solely by the fetcher.
func (p *peer) RequestOneHeader(hash common.Hash) error {
	glog.V(logger.Debug).Infof("%v fetching a single header: %x", p, hash)
	return p2p.Send(p.rw, GetBlockHeadersMsg, &getBlockHeadersData{Origin: hashOrNumber{Hash: hash}, Amount: uint64(1), Skip: uint64(0), Reverse: false})
}
コード例 #13
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// RequestHeadersByNumber fetches a batch of blocks' headers corresponding to the
// specified header query, based on the number of an origin block.
func (p *peer) RequestHeadersByNumber(origin uint64, amount int, skip int, reverse bool) error {
	glog.V(logger.Debug).Infof("%v fetching %d headers from #%d, skipping %d (reverse = %v)", p, amount, origin, skip, reverse)
	return p2p.Send(p.rw, GetBlockHeadersMsg, &getBlockHeadersData{Origin: hashOrNumber{Number: origin}, Amount: uint64(amount), Skip: uint64(skip), Reverse: reverse})
}
コード例 #14
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// 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 {
	glog.V(logger.Debug).Infof("%v fetching hashes (%d) from %x...", p, downloader.MaxHashFetch, from[:4])
	return p2p.Send(p.rw, GetBlockHashesMsg, getBlockHashesData{from, uint64(downloader.MaxHashFetch)})
}
コード例 #15
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// RequestHashesFromNumber fetches a batch of hashes from a peer, starting at
// the requested block number, going upwards towards the genesis block.
func (p *peer) RequestHashesFromNumber(from uint64, count int) error {
	glog.V(logger.Debug).Infof("%v fetching hashes (%d) from #%d...", p, count, from)
	return p2p.Send(p.rw, GetBlockHashesFromNumberMsg, getBlockHashesFromNumberData{from, uint64(count)})
}
コード例 #16
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// 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 {
	for _, tx := range txs {
		p.knownTxs.Add(tx.Hash())
	}
	return p2p.Send(p.rw, TxMsg, txs)
}
コード例 #17
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// SendReceiptsRLP sends a batch of transaction receipts, corresponding to the
// ones requested from an already RLP encoded format.
func (p *peer) SendReceiptsRLP(receipts []rlp.RawValue) error {
	return p2p.Send(p.rw, ReceiptsMsg, receipts)
}
コード例 #18
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// RequestReceipts fetches a batch of transaction receipts from a remote node.
func (p *peer) RequestReceipts(hashes []common.Hash) error {
	glog.V(logger.Debug).Infof("%v fetching %v receipts", p, len(hashes))
	return p2p.Send(p.rw, GetReceiptsMsg, hashes)
}
コード例 #19
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// SendBlockHashes sends a batch of known hashes to the remote peer.
func (p *peer) SendBlockHashes(hashes []common.Hash) error {
	return p2p.Send(p.rw, BlockHashesMsg, hashes)
}
コード例 #20
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// RequestBodies fetches a batch of blocks' bodies corresponding to the hashes
// specified.
func (p *peer) RequestBodies(hashes []common.Hash) error {
	glog.V(logger.Debug).Infof("%v fetching %d block bodies", p, len(hashes))
	return p2p.Send(p.rw, GetBlockBodiesMsg, hashes)
}
コード例 #21
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// SendNewBlock propagates an entire block to a remote peer.
func (p *peer) SendNewBlock(block *types.Block, td *big.Int) error {
	p.knownBlocks.Add(block.Hash())
	return p2p.Send(p.rw, NewBlockMsg, []interface{}{block, td})
}
コード例 #22
0
func testGetNodeData(t *testing.T, protocol int) {
	// Define three accounts to simulate transactions with
	acc1Key, _ := crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a")
	acc2Key, _ := crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee")
	acc1Addr := crypto.PubkeyToAddress(acc1Key.PublicKey)
	acc2Addr := crypto.PubkeyToAddress(acc2Key.PublicKey)

	// Create a chain generator with some simple transactions (blatantly stolen from @fjl/chain_makerts_test)
	generator := func(i int, block *core.BlockGen) {
		switch i {
		case 0:
			// In block 1, the test bank sends account #1 some ether.
			tx, _ := types.NewTransaction(block.TxNonce(testBankAddress), acc1Addr, big.NewInt(10000), params.TxGas, nil, nil).SignECDSA(testBankKey)
			block.AddTx(tx)
		case 1:
			// In block 2, the test bank sends some more ether to account #1.
			// acc1Addr passes it on to account #2.
			tx1, _ := types.NewTransaction(block.TxNonce(testBankAddress), acc1Addr, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(testBankKey)
			tx2, _ := types.NewTransaction(block.TxNonce(acc1Addr), acc2Addr, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(acc1Key)
			block.AddTx(tx1)
			block.AddTx(tx2)
		case 2:
			// Block 3 is empty but was mined by account #2.
			block.SetCoinbase(acc2Addr)
			block.SetExtra([]byte("yeehaw"))
		case 3:
			// Block 4 includes blocks 2 and 3 as uncle headers (with modified extra data).
			b2 := block.PrevBlock(1).Header()
			b2.Extra = []byte("foo")
			block.AddUncle(b2)
			b3 := block.PrevBlock(2).Header()
			b3.Extra = []byte("foo")
			block.AddUncle(b3)
		}
	}
	// Assemble the test environment
	pm := newTestProtocolManagerMust(t, false, 4, generator, nil)
	peer, _ := newTestPeer("peer", protocol, pm, true)
	defer peer.close()

	// Fetch for now the entire chain db
	hashes := []common.Hash{}
	for _, key := range pm.chaindb.(*ethdb.MemDatabase).Keys() {
		if len(key) == len(common.Hash{}) {
			hashes = append(hashes, common.BytesToHash(key))
		}
	}
	p2p.Send(peer.app, 0x0d, hashes)
	msg, err := peer.app.ReadMsg()
	if err != nil {
		t.Fatalf("failed to read node data response: %v", err)
	}
	if msg.Code != 0x0e {
		t.Fatalf("response packet code mismatch: have %x, want %x", msg.Code, 0x0c)
	}
	var data [][]byte
	if err := msg.Decode(&data); err != nil {
		t.Fatalf("failed to decode response node data: %v", err)
	}
	// Verify that all hashes correspond to the requested data, and reconstruct a state tree
	for i, want := range hashes {
		if hash := crypto.Sha3Hash(data[i]); hash != want {
			fmt.Errorf("data hash mismatch: have %x, want %x", hash, want)
		}
	}
	statedb, _ := ethdb.NewMemDatabase()
	for i := 0; i < len(data); i++ {
		statedb.Put(hashes[i].Bytes(), data[i])
	}
	accounts := []common.Address{testBankAddress, acc1Addr, acc2Addr}
	for i := uint64(0); i <= pm.blockchain.CurrentBlock().NumberU64(); i++ {
		trie, _ := state.New(pm.blockchain.GetBlockByNumber(i).Root(), statedb)

		for j, acc := range accounts {
			state, _ := pm.blockchain.State()
			bw := state.GetBalance(acc)
			bh := trie.GetBalance(acc)

			if (bw != nil && bh == nil) || (bw == nil && bh != nil) {
				t.Errorf("test %d, account %d: balance mismatch: have %v, want %v", i, j, bh, bw)
			}
			if bw != nil && bh != nil && bw.Cmp(bw) != 0 {
				t.Errorf("test %d, account %d: balance mismatch: have %v, want %v", i, j, bh, bw)
			}
		}
	}
}
コード例 #23
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// SendNewBlockHashes61 announces the availability of a number of blocks through
// a hash notification.
func (p *peer) SendNewBlockHashes61(hashes []common.Hash) error {
	for _, hash := range hashes {
		p.knownBlocks.Add(hash)
	}
	return p2p.Send(p.rw, NewBlockHashesMsg, hashes)
}
コード例 #24
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// SendBlocks sends a batch of blocks to the remote peer.
func (p *peer) SendBlocks(blocks []*types.Block) error {
	return p2p.Send(p.rw, BlocksMsg, blocks)
}
コード例 #25
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// RequestNodeData fetches a batch of arbitrary data from a node's known state
// data, corresponding to the specified hashes.
func (p *peer) RequestNodeData(hashes []common.Hash) error {
	glog.V(logger.Debug).Infof("%v fetching %v state data", p, len(hashes))
	return p2p.Send(p.rw, GetNodeDataMsg, hashes)
}
コード例 #26
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// SendBlockBodies sends a batch of block contents to the remote peer.
func (p *peer) SendBlockBodies(bodies []*blockBody) error {
	return p2p.Send(p.rw, BlockBodiesMsg, blockBodiesData(bodies))
}
コード例 #27
0
func testGetBlockBodies(t *testing.T, protocol int) {
	pm := newTestProtocolManagerMust(t, false, downloader.MaxBlockFetch+15, nil, nil)
	peer, _ := newTestPeer("peer", protocol, pm, true)
	defer peer.close()

	// Create a batch of tests for various scenarios
	limit := downloader.MaxBlockFetch
	tests := []struct {
		random    int           // Number of blocks to fetch randomly from the chain
		explicit  []common.Hash // Explicitly requested blocks
		available []bool        // Availability of explicitly requested blocks
		expected  int           // Total number of existing blocks to expect
	}{
		{1, nil, nil, 1},                                                         // A single random block should be retrievable
		{10, nil, nil, 10},                                                       // Multiple random blocks should be retrievable
		{limit, nil, nil, limit},                                                 // The maximum possible blocks should be retrievable
		{limit + 1, nil, nil, limit},                                             // No more than the possible block count should be returned
		{0, []common.Hash{pm.blockchain.Genesis().Hash()}, []bool{true}, 1},      // The genesis block should be retrievable
		{0, []common.Hash{pm.blockchain.CurrentBlock().Hash()}, []bool{true}, 1}, // The chains head block should be retrievable
		{0, []common.Hash{common.Hash{}}, []bool{false}, 0},                      // A non existent block should not be returned

		// Existing and non-existing blocks interleaved should not cause problems
		{0, []common.Hash{
			common.Hash{},
			pm.blockchain.GetBlockByNumber(1).Hash(),
			common.Hash{},
			pm.blockchain.GetBlockByNumber(10).Hash(),
			common.Hash{},
			pm.blockchain.GetBlockByNumber(100).Hash(),
			common.Hash{},
		}, []bool{false, true, false, true, false, true, false}, 3},
	}
	// Run each of the tests and verify the results against the chain
	for i, tt := range tests {
		// Collect the hashes to request, and the response to expect
		hashes, seen := []common.Hash{}, make(map[int64]bool)
		bodies := []*blockBody{}

		for j := 0; j < tt.random; j++ {
			for {
				num := rand.Int63n(int64(pm.blockchain.CurrentBlock().NumberU64()))
				if !seen[num] {
					seen[num] = true

					block := pm.blockchain.GetBlockByNumber(uint64(num))
					hashes = append(hashes, block.Hash())
					if len(bodies) < tt.expected {
						bodies = append(bodies, &blockBody{Transactions: block.Transactions(), Uncles: block.Uncles()})
					}
					break
				}
			}
		}
		for j, hash := range tt.explicit {
			hashes = append(hashes, hash)
			if tt.available[j] && len(bodies) < tt.expected {
				block := pm.blockchain.GetBlock(hash)
				bodies = append(bodies, &blockBody{Transactions: block.Transactions(), Uncles: block.Uncles()})
			}
		}
		// Send the hash request and verify the response
		p2p.Send(peer.app, 0x05, hashes)
		if err := p2p.ExpectMsg(peer.app, 0x06, bodies); err != nil {
			t.Errorf("test %d: bodies mismatch: %v", i, err)
		}
	}
}
コード例 #28
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// SendBlockBodiesRLP sends a batch of block contents to the remote peer from
// an already RLP encoded format.
func (p *peer) SendBlockBodiesRLP(bodies []rlp.RawValue) error {
	return p2p.Send(p.rw, BlockBodiesMsg, bodies)
}
コード例 #29
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// SendBlockHeaders sends a batch of block headers to the remote peer.
func (p *peer) SendBlockHeaders(headers []*types.Header) error {
	return p2p.Send(p.rw, BlockHeadersMsg, headers)
}
コード例 #30
0
ファイル: peer.go プロジェクト: Cisko-Rijken/go-expanse
// SendNodeDataRLP sends a batch of arbitrary internal data, corresponding to the
// hashes requested.
func (p *peer) SendNodeData(data [][]byte) error {
	return p2p.Send(p.rw, NodeDataMsg, data)
}