/// <summary>
/// Event handler that is called when the attached node receives a network message.
/// </summary>
/// <param name="node">Node that received the message.</param>
/// <param name="message">Received message.</param>
/// <remarks>
/// This handler only cares about "verack" messages, which are only sent once per node
/// and at the time they are sent the time offset information is parsed by underlaying logic.
/// <para>
/// Note that it is not possible to use "version" message here as <see cref="Node"/>
/// does not deliver this message for inbound peers to node behaviors.
/// </para>
/// </remarks>
private void AttachedNode_MessageReceived(Node node, IncomingMessage message)
{
this.logger.LogTrace("({0}:'{1}',{2}:'{3}')", nameof(node), node.RemoteSocketEndpoint, nameof(message), message.Message.Command);
VerAckPayload verack = message.Message.Payload as VerAckPayload;
if (verack != null)
{
IPAddress address = node.RemoteSocketAddress;
if (address != null)
{
VersionPayload version = node.PeerVersion;
if (version != null)
{
TimeSpan timeOffset = version.Timestamp - this.dateTimeProvider.GetTimeOffset();
if (timeOffset != null)
{
this.state.AddTimeData(address, timeOffset, node.Inbound);
}
}
else
{
this.logger.LogTrace("Node '{0}' does not have an initialized time offset.", node.RemoteSocketEndpoint);
}
}
else
{
this.logger.LogTrace("Message received from unknown node's address.");
}
}
this.logger.LogTrace("(-)");
}
public void TestVerAckMessagePayload()
{
MessagePayload payload;
byte[] expected;
var commandPayload = new VerAckPayload();
UInt32 magic = 0xE7E5E7E4;
payload = new MessagePayload(magic, "verack", commandPayload);
expected = new byte[] {
0xE4, 0xE7, 0xE5, 0xE7, // Primecoin Magic Bytes
0x76, 0x65, 0x72, 0x61, 0x63, 0x6B, 0x00, 0x00, // verack Command zero padded...
0x00, 0x00, 0x00, 0x00, // ...
0x00, 0x00, 0x00, 0x00, // Length (0)
0x5D, 0xF6, 0xE0, 0xE2, // CheckSum
};
AssertBytesEqual(expected, payload.ToBytes());
AssertMessagePayloadsEqual(payload, new MessagePayload(expected));
}
