Examples with BlockHeadersMessage org.hyperledger.besu.ethereum.eth.messages.BlockHeadersMessage used on opensource projects

Example 1 with BlockHeadersMessage

use of org.hyperledger.besu.ethereum.eth.messages.BlockHeadersMessage in project besu by hyperledger.

the class Istanbul99ProtocolManagerTest method respondToEth65GetHeadersUsingIstanbul99.

@Test
public void respondToEth65GetHeadersUsingIstanbul99() throws ExecutionException, InterruptedException, TimeoutException {
    final CompletableFuture<Void> done = new CompletableFuture<>();
    final EthScheduler ethScheduler = new DeterministicEthScheduler(() -> false);
    EthPeers peers = new EthPeers(Istanbul99Protocol.NAME, TestClock.fixed(), new NoOpMetricsSystem(), 25);
    EthMessages messages = new EthMessages();
    final BigInteger networkId = BigInteger.ONE;
    try (final EthProtocolManager ethManager = new Istanbul99ProtocolManager(blockchain, networkId, protocolContext.getWorldStateArchive(), transactionPool, EthProtocolConfiguration.defaultConfig(), peers, messages, new EthContext(peers, messages, ethScheduler), Collections.emptyList(), false, ethScheduler)) {
        final long startBlock = blockchain.getChainHeadBlockNumber() + 1;
        final int blockCount = 5;
        final MessageData messageData = GetBlockHeadersMessage.create(startBlock, blockCount, 0, false);
        final PeerSendHandler onSend = (cap, message, conn) -> {
            if (message.getCode() == EthPV62.STATUS) {
                // Ignore status message
                return;
            }
            assertThat(message.getCode()).isEqualTo(EthPV62.BLOCK_HEADERS);
            final BlockHeadersMessage headersMsg = BlockHeadersMessage.readFrom(message);
            final List<BlockHeader> headers = Lists.newArrayList(headersMsg.getHeaders(protocolSchedule));
            assertThat(headers.size()).isEqualTo(0);
            done.complete(null);
        };
        final PeerConnection peer = setupPeer(ethManager, onSend);
        ethManager.processMessage(Istanbul99Protocol.ISTANBUL99, new DefaultMessage(peer, messageData));
        done.get(10, TimeUnit.SECONDS);
    }
}

Example 2 with BlockHeadersMessage

use of org.hyperledger.besu.ethereum.eth.messages.BlockHeadersMessage in project besu by hyperledger.

the class DownloadHeaderSequenceTaskTest method failsWhenPeerReturnsOnlySubsetOfHeaders.

@Test
public void failsWhenPeerReturnsOnlySubsetOfHeaders() {
    final RespondingEthPeer respondingPeer = EthProtocolManagerTestUtil.createPeer(ethProtocolManager);
    // Execute task and wait for response
    final BlockHeader referenceHeader = blockchain.getChainHeadHeader();
    final EthTask<List<BlockHeader>> task = DownloadHeaderSequenceTask.endingAtHeader(protocolSchedule, protocolContext, ethContext, referenceHeader, 10, maxRetries, validationPolicy, metricsSystem);
    final CompletableFuture<List<BlockHeader>> future = task.run();
    // Filter response to include only reference header and previous header
    final RespondingEthPeer.Responder fullResponder = RespondingEthPeer.blockchainResponder(blockchain);
    final RespondingEthPeer.Responder responder = (cap, message) -> {
        final Optional<MessageData> fullResponse = fullResponder.respond(cap, message);
        if (!fullResponse.isPresent() || message.getCode() != EthPV62.GET_BLOCK_HEADERS) {
            return fullResponse;
        }
        final BlockHeadersMessage headersMessage = BlockHeadersMessage.readFrom(fullResponse.get());
        // Filter for a subset of headers
        final List<BlockHeader> headerSubset = headersMessage.getHeaders(protocolSchedule).stream().filter(h -> h.getNumber() >= referenceHeader.getNumber() - 1L).collect(Collectors.toList());
        return Optional.of(BlockHeadersMessage.create(headerSubset));
    };
    respondingPeer.respondTimes(responder, 100);
    assertThat(future.isDone()).isTrue();
    assertThat(future.isCompletedExceptionally()).isTrue();
    assertThatThrownBy(future::get).hasCauseInstanceOf(MaxRetriesReachedException.class);
}

Example 3 with BlockHeadersMessage

use of org.hyperledger.besu.ethereum.eth.messages.BlockHeadersMessage in project besu by hyperledger.

the class AbstractGetHeadersFromPeerTask method processResponse.

@Override
protected Optional<List<BlockHeader>> processResponse(final boolean streamClosed, final MessageData message, final EthPeer peer) {
    if (streamClosed) {
        // All outstanding requests have been responded to and we still haven't found the response
        // we wanted. It must have been empty or contain data that didn't match.
        peer.recordUselessResponse("headers");
        return Optional.of(Collections.emptyList());
    }
    final BlockHeadersMessage headersMessage = BlockHeadersMessage.readFrom(message);
    final List<BlockHeader> headers = headersMessage.getHeaders(protocolSchedule);
    if (headers.isEmpty()) {
        // Message contains no data - nothing to do
        LOG.debug("headers.isEmpty. Peer: {}", peer);
        return Optional.empty();
    }
    if (headers.size() > count) {
        // Too many headers - this isn't our response
        LOG.debug("headers.size()>count. Peer: {}", peer);
        return Optional.empty();
    }
    final BlockHeader firstHeader = headers.get(0);
    if (!matchesFirstHeader(firstHeader)) {
        // This isn't our message - nothing to do
        LOG.debug("!matchesFirstHeader. Peer: {}", peer);
        return Optional.empty();
    }
    final List<BlockHeader> headersList = new ArrayList<>();
    headersList.add(firstHeader);
    BlockHeader prevBlockHeader = firstHeader;
    final int expectedDelta = reverse ? -(skip + 1) : (skip + 1);
    for (int i = 1; i < headers.size(); i++) {
        final BlockHeader header = headers.get(i);
        if (header.getNumber() != prevBlockHeader.getNumber() + expectedDelta) {
            // Skip doesn't match, this isn't our data
            LOG.debug("header not matching the expected number. Peer: {}", peer);
            return Optional.empty();
        }
        // if headers are supposed to be sequential check if a chain is formed
        if (Math.abs(expectedDelta) == 1) {
            final BlockHeader parent = reverse ? header : prevBlockHeader;
            final BlockHeader child = reverse ? prevBlockHeader : header;
            if (!parent.getHash().equals(child.getParentHash())) {
                LOG.debug("Sequential headers must form a chain through hashes, disconnecting peer: {}", peer);
                peer.disconnect(DisconnectMessage.DisconnectReason.BREACH_OF_PROTOCOL);
                return Optional.empty();
            }
        }
        prevBlockHeader = header;
        headersList.add(header);
    }
    LOG.debug("Received {} of {} headers requested from peer {}", headersList.size(), count, peer);
    return Optional.of(headersList);
}

Example 4 with BlockHeadersMessage

use of org.hyperledger.besu.ethereum.eth.messages.BlockHeadersMessage in project besu by hyperledger.

the class EthProtocolManagerTest method respondToGetHeaders.

@Test
public void respondToGetHeaders() throws ExecutionException, InterruptedException {
    final CompletableFuture<Void> done = new CompletableFuture<>();
    try (final EthProtocolManager ethManager = EthProtocolManagerTestUtil.create(blockchain, () -> false, protocolContext.getWorldStateArchive(), transactionPool, EthProtocolConfiguration.defaultConfig())) {
        final long startBlock = 5L;
        final int blockCount = 5;
        final MessageData messageData = GetBlockHeadersMessage.create(startBlock, blockCount, 0, false);
        final PeerSendHandler onSend = (cap, message, conn) -> {
            if (message.getCode() == EthPV62.STATUS) {
                // Ignore status message
                return;
            }
            assertThat(message.getCode()).isEqualTo(EthPV62.BLOCK_HEADERS);
            final BlockHeadersMessage headersMsg = BlockHeadersMessage.readFrom(message);
            final List<BlockHeader> headers = Lists.newArrayList(headersMsg.getHeaders(protocolSchedule));
            assertThat(headers).hasSize(blockCount);
            for (int i = 0; i < blockCount; i++) {
                assertThat(headers.get(i).getNumber()).isEqualTo(startBlock + i);
            }
            done.complete(null);
        };
        final PeerConnection peer = setupPeer(ethManager, onSend);
        ethManager.processMessage(EthProtocol.ETH63, new DefaultMessage(peer, messageData));
        done.get();
    }
}

Example 5 with BlockHeadersMessage

use of org.hyperledger.besu.ethereum.eth.messages.BlockHeadersMessage in project besu by hyperledger.

the class EthProtocolManagerTest method respondToGetHeadersWithinLimits.

@Test
public void respondToGetHeadersWithinLimits() throws ExecutionException, InterruptedException {
    final CompletableFuture<Void> done = new CompletableFuture<>();
    final int limit = 5;
    try (final EthProtocolManager ethManager = EthProtocolManagerTestUtil.create(blockchain, () -> false, protocolContext.getWorldStateArchive(), transactionPool, new EthProtocolConfiguration(limit, limit, limit, limit, limit, false))) {
        final long startBlock = 5L;
        final int blockCount = 10;
        final MessageData messageData = GetBlockHeadersMessage.create(startBlock, blockCount, 0, false);
        final PeerSendHandler onSend = (cap, message, conn) -> {
            if (message.getCode() == EthPV62.STATUS) {
                // Ignore status message
                return;
            }
            assertThat(message.getCode()).isEqualTo(EthPV62.BLOCK_HEADERS);
            final BlockHeadersMessage headersMsg = BlockHeadersMessage.readFrom(message);
            final List<BlockHeader> headers = Lists.newArrayList(headersMsg.getHeaders(protocolSchedule));
            assertThat(headers).hasSize(limit);
            for (int i = 0; i < limit; i++) {
                assertThat(headers.get(i).getNumber()).isEqualTo(startBlock + i);
            }
            done.complete(null);
        };
        final PeerConnection peer = setupPeer(ethManager, onSend);
        ethManager.processMessage(EthProtocol.ETH63, new DefaultMessage(peer, messageData));
        done.get();
    }
}