public void TestVerack() { var bs = new BitcoinSerializer(NetworkParameters.ProdNet(), false); // the actual data from https://en.bitcoin.it/wiki/Protocol_specification#verack using (var bais = new MemoryStream(Hex.Decode("f9beb4d976657261636b00000000000000000000"))) { bs.Deserialize(bais); } }
public void TestVersion() { var bs = new BitcoinSerializer(NetworkParameters.ProdNet(), false); // the actual data from https://en.bitcoin.it/wiki/Protocol_specification#version using (var bais = new MemoryStream(Hex.Decode("f9beb4d976657273696f6e0000000000550000009" + "c7c00000100000000000000e615104d00000000010000000000000000000000000000000000ffff0a000001daf6010000" + "000000000000000000000000000000ffff0a000002208ddd9d202c3ab457130055810100"))) { var vm = (VersionMessage) bs.Deserialize(bais); Assert.AreEqual(31900U, vm.ClientVersion); Assert.AreEqual(1292899814UL, vm.Time); Assert.AreEqual(98645U, vm.BestHeight); } }
public void TestAddr() { var bs = new BitcoinSerializer(NetworkParameters.ProdNet(), true); // the actual data from https://en.bitcoin.it/wiki/Protocol_specification#addr using (var bais = new MemoryStream(Hex.Decode("f9beb4d96164647200000000000000001f000000" + "ed52399b01e215104d010000000000000000000000000000000000ffff0a000001208d"))) { var a = (AddressMessage) bs.Deserialize(bais); Assert.AreEqual(1, a.Addresses.Count); var pa = a.Addresses[0]; Assert.AreEqual(8333, pa.Port); Assert.AreEqual("10.0.0.1", pa.Addr.ToString()); } }
/// <summary> /// Connect to the given IP address using the port specified as part of the network parameters. Once construction /// is complete a functioning network channel is set up and running. /// </summary> /// <param name="peerAddress">IP address to connect to. IPv6 is not currently supported by BitCoin. If port is not positive the default port from params is used.</param> /// <param name="networkParameters">Defines which network to connect to and details of the protocol.</param> /// <param name="bestHeight">How many blocks are in our best chain</param> /// <param name="connectTimeout">Timeout in milliseconds when initially connecting to peer</param> /// <exception cref="IOException">If there is a network related failure.</exception> /// <exception cref="ProtocolException">If the version negotiation failed.</exception> public NetworkConnection(PeerAddress peerAddress, NetworkParameters networkParameters, uint bestHeight, int connectTimeout = 60000) { _networkParameters = networkParameters; _remoteIp = peerAddress.IpAddress; var port = (peerAddress.Port > 0) ? peerAddress.Port : networkParameters.Port; var address = new IPEndPoint(_remoteIp, port); _socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); _socket.Connect(address); _socket.SendTimeout = _socket.ReceiveTimeout = connectTimeout; _outputStream = new NetworkStream(_socket, FileAccess.Write); _inputStream = new NetworkStream(_socket, FileAccess.Read); // the version message never uses check-summing. Update check-summing property after version is read. _serializer = new BitcoinSerializer(networkParameters); // Announce ourselves. This has to come first to connect to clients beyond v0.30.20.2 which wait to hear // from us until they send their version message back. var versionMessage = new VersionMessage(networkParameters, bestHeight); //Log.DebugFormat("Version Message: {0}", versionMessage); WriteMessage(versionMessage); //Log.Debug("Sent version message. Now we should read the ack from the peer."); VersionMessage versionMessageFromPeer; while ((versionMessage = ReadMessage() as VersionMessage)==null) { } Log.Info("WE HAVE A VERSION MESSAGE!"); // When connecting, the remote peer sends us a version message with various bits of // useful data in it. We need to know the peer protocol version before we can talk to it. _versionMessage = (VersionMessage) versionMessage; //Log.Debug("read message of type version."); Log.Debug(_versionMessage); // Now it's our turn ... // Send an ACK message stating we accept the peers protocol version. WriteMessage(new VersionAckMessage()); // And get one back ... ReadMessage(); // Switch to the new protocol version. var peerVersion = _versionMessage.ClientVersion; Log.InfoFormat("Connected to peer: version={0}, subVer='{1}', services=0x{2:X}, time={3}, blocks={4}", peerVersion, _versionMessage.SubVersion, _versionMessage.LocalServices, UnixTime.FromUnixTime(_versionMessage.Time), _versionMessage.BestHeight ); // BitcoinSharp is a client mode implementation. That means there's not much point in us talking to other client // mode nodes because we can't download the data from them we need to find/verify transactions. if (!_versionMessage.HasBlockChain()) { // Shut down the socket try { Shutdown(); } catch (IOException) { // ignore exceptions while aborting } throw new ProtocolException("Peer does not have a copy of the block chain."); } // Handshake is done! }