private void InitProtocol(ISession session, string protocolCode, int version, bool addCapabilities = false)
{
if (session.State < SessionState.Initialized)
{
throw new InvalidOperationException($"{nameof(InitProtocol)} called on {session}");
}
if (session.State != SessionState.Initialized)
{
return;
}
string code = protocolCode.ToLowerInvariant();
if (!_protocolFactories.TryGetValue(code, out Func <ISession, int, IProtocolHandler> protocolFactory))
{
throw new NotSupportedException($"Protocol {code} {version} is not supported");
}
IProtocolHandler protocolHandler = protocolFactory(session, version);
protocolHandler.SubprotocolRequested += (s, e) => InitProtocol(session, e.ProtocolCode, e.Version);
session.AddProtocolHandler(protocolHandler);
if (addCapabilities)
{
foreach (Capability capability in _capabilities)
{
session.AddSupportedCapability(capability);
}
}
protocolHandler.Init();
}
private void InitProtocol(ISession session, string protocolCode, int version)
{
if (session.State < SessionState.Initialized)
{
throw new InvalidOperationException($"{nameof(InitProtocol)} called on {session}");
}
if (session.State != SessionState.Initialized)
{
return;
}
protocolCode = protocolCode.ToLowerInvariant();
IProtocolHandler protocolHandler;
switch (protocolCode)
{
case Protocol.P2P:
P2PProtocolHandler handler = new P2PProtocolHandler(session, _localPeer.LocalNodeId, _stats, _serializer, _perfService, _logManager);
session.PingSender = handler;
InitP2PProtocol(session, handler);
protocolHandler = handler;
break;
case Protocol.Eth:
if (version < 62 || version > 63)
{
throw new NotSupportedException($"Eth protocol version {version} is not supported.");
}
Eth62ProtocolHandler ethHandler = version == 62
? new Eth62ProtocolHandler(session, _serializer, _stats, _syncManager, _logManager, _perfService, _transactionPool)
: new Eth63ProtocolHandler(session, _serializer, _stats, _syncManager, _logManager, _perfService, _transactionPool);
InitEthProtocol(session, ethHandler);
protocolHandler = ethHandler;
break;
default:
throw new NotSupportedException($"Protocol {protocolCode} {version} is not supported");
}
protocolHandler.SubprotocolRequested += (sender, args) => InitProtocol(session, args.ProtocolCode, args.Version);
session.AddProtocolHandler(protocolHandler);
protocolHandler.Init();
}