public static AlertMessage Parse(byte[] payload)
{
// Compute checksum
var checksum = DoubleSHA256.ComputeChecksum(payload);
// Parse
var reader = new PayloadReader(payload);
var alertSize = reader.ReadVarInt();
var alertFormatVersion = reader.ReadInt32();
var relayUntil = reader.ReadDateTimeOffset(longer: true);
var expiration = reader.ReadDateTimeOffset(longer: true);
var alertID = reader.ReadInt32();
var cancel0 = reader.ReadInt32();
var nCancel = reader.ReadVarInt() + 1;
var toCancel = new Int32[nCancel];
toCancel[0] = cancel0;
for (ulong i = 1; i < nCancel; i++)
{
toCancel[i] = reader.ReadInt32();
}
var minVersion = reader.ReadInt32();
var maxVersion = reader.ReadInt32();
var nSubVersions = reader.ReadVarInt();
var subVersions = new string[nSubVersions];
for (ulong j = 0; j < nSubVersions; j++)
{
subVersions[j] = reader.ReadString();
}
var priority = reader.ReadInt32();
var comment = reader.ReadString();
var statusBar = reader.ReadString();
var reserved = reader.ReadString();
var signature = reader.ReadArray(72);
reader.ThrowIfNotEndReached();
// Return
return(new AlertMessage {
IsFinalAlert = checksum.SequenceEqual(FinalAlertHash),
StatusBar = statusBar
});
}
static readonly byte[] Services = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; // TODO: Fill in services
public static VersionMessage Parse(byte[] payload)
{
var reader = new PayloadReader(payload);
var protocolVersion = reader.ReadUInt32();
reader.Seek(8, SeekOrigin.Current);
var timestamp = reader.ReadDateTimeOffset(true);
reader.Seek(8, SeekOrigin.Current);
var to = reader.ReadIPEndPoint();
reader.Seek(8, SeekOrigin.Current);
var from = reader.ReadIPEndPoint();
var nonce = reader.ReadUInt64();
var userAgent = reader.ReadString();
var startHeight = reader.ReadInt32();
bool relay = true;
if (reader.Position < payload.Length)
{
relay = reader.ReadBool();
}
if (reader.Position != payload.Length)
{
throw new Exception($"Unparsed data remaining in {nameof(VersionMessage)}");
}
return(new VersionMessage(
protocolVersion,
timestamp,
to,
from,
nonce,
userAgent,
startHeight,
relay
));
}
public static AddrMessage Parse(byte[] payload)
{
var reader = new PayloadReader(payload);
var count = reader.ReadVarInt(); // TODO: Warn when count exceeds 1000, this ought to be a maximum
var nodeInfos = new NodeInfo[count]; // TODO: Don't allow peer to force us to allocate a lot of memory here
for (UInt64 i = 0; i < count; i++)
{
var timestamp = reader.ReadDateTimeOffset(longer: false); // Clients with protocol version >= 31402 will provide this timestamp
reader.Seek(8, SeekOrigin.Current);
var endpoint = reader.ReadIPEndPoint();
nodeInfos[i] = new NodeInfo(timestamp, endpoint);
}
reader.ThrowIfNotEndReached();
return(new AddrMessage
{
NodeInfos = nodeInfos
});
}