/// <summary>
/// Interpret a client's handshake, either sending a package
/// of strings or completing the handshake.
///
/// Uncached flow: <code>
/// Client | Server
/// | <-------------- Hash |
/// | Need Strings ------> | <- you are here on server
/// | <----------- Strings |
/// | Dont Need Strings -> | <- you are here on server
/// </code>
///
/// Cached flow: <code>
/// Client | Server
/// | <-------------- Hash |
/// | Dont Need Strings -> | <- you are here on server
/// </code>
///
/// Verification failure flow: <code>
/// Client | Server
/// | <-------------- Hash |
/// | Need Strings ------> | <- you are here on server
/// | <----------- Strings |
/// + Hash Failed |
/// | Need Strings ------> | <- you are here on server
/// | <----------- Strings |
/// | Dont Need Strings -> |
/// </code>
///
/// NOTE: Verification failure flow is currently not implemented.
/// </summary>
/// <seealso cref="NetworkInitialize"/>
private void HandleClientHandshake(MsgMapStrClientHandshake msgMapStr)
{
DebugTools.Assert(_net.IsServer);
DebugTools.Assert(_dict.Locked);
var channel = msgMapStr.MsgChannel;
LogSzr.Debug($"Received handshake from {channel.SessionId}.");
if (!_incompleteHandshakes.TryGetValue(channel, out var handshake))
{
channel.Disconnect("MsgMapStrClientHandshake without in-progress handshake.");
return;
}
if (!msgMapStr.NeedsStrings)
{
LogSzr.Debug($"Completing handshake with {channel.SessionId}.");
handshake.Tcs.SetResult(null);
_incompleteHandshakes.Remove(channel);
return;
}
if (handshake.HasRequestedStrings)
{
channel.Disconnect("Cannot request strings twice");
return;
}
handshake.HasRequestedStrings = true;
var strings = _net.CreateNetMessage <MsgMapStrStrings>();
strings.Package = _mappedStringsPackage;
LogSzr.Debug(
$"Sending {_mappedStringsPackage!.Length} bytes sized mapped strings package to {channel.SessionId}.");
_net.ServerSendMessage(strings, channel);
}
/// <summary>
/// Interpret a client's handshake, either sending a package
/// of strings or completing the handshake.
///
/// Uncached flow: <code>
/// Client | Server
/// | <-------------- Hash |
/// | Need Strings ------> | <- you are here on server
/// | <----------- Strings |
/// | Dont Need Strings -> | <- you are here on server
/// </code>
///
/// Cached flow: <code>
/// Client | Server
/// | <-------------- Hash |
/// | Dont Need Strings -> | <- you are here on server
/// </code>
///
/// Verification failure flow: <code>
/// Client | Server
/// | <-------------- Hash |
/// | Need Strings ------> | <- you are here on server
/// | <----------- Strings |
/// + Hash Failed |
/// | Need Strings ------> | <- you are here on server
/// | <----------- Strings |
/// | Dont Need Strings -> |
/// </code>
///
/// NOTE: Verification failure flow is currently not implemented.
/// </summary>
/// <seealso cref="NetworkInitialize"/>
private void HandleClientHandshake(MsgMapStrClientHandshake msgMapStr)
{
DebugTools.Assert(_net.IsServer);
DebugTools.Assert(_dict.Locked);
LogSzr.Debug($"Received handshake from {msgMapStr.MsgChannel.RemoteEndPoint.Address}.");
if (!msgMapStr.NeedsStrings)
{
LogSzr.Debug($"Completing handshake with {msgMapStr.MsgChannel.RemoteEndPoint.Address}.");
_incompleteHandshakes.Remove(msgMapStr.MsgChannel);
return;
}
// TODO: count and limit number of requests to send strings during handshake
var strings = _net.CreateNetMessage <MsgMapStrStrings>();
strings.Package = _mappedStringsPackage;
LogSzr.Debug(
$"Sending {_mappedStringsPackage!.Length} bytes sized mapped strings package to {msgMapStr.MsgChannel.SessionId}.");
_net.ServerSendMessage(strings, msgMapStr.MsgChannel);
}
