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Client/server handshake. Only checks that the correct mods are active.

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This commit is contained in:
Paul Chote
2010-12-31 11:41:25 +13:00
parent dc012c0faf
commit 8f9e32dcc0
5 changed files with 145 additions and 24 deletions
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47
OpenRA.Game/Network/Handshake.cs Normal file
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@@ -0,0 +1,47 @@
#region Copyright & License Information
/*
* Copyright 2007-2010 The OpenRA Developers (see AUTHORS)
* This file is part of OpenRA, which is free software. It is made
* available to you under the terms of the GNU General Public License
* as published by the Free Software Foundation. For more information,
* see LICENSE.
*/
#endregion
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using OpenRA.FileFormats;
namespace OpenRA.Network
{
public class HandshakeResponse
{
public string Name;
public Color Color1;
public Color Color2;
public string[] Mods = { "ra" }; // mod names
public string Password;
public string Serialize()
{
var data = new List<MiniYamlNode>();
data.Add(new MiniYamlNode("Handshake", FieldSaver.Save(this)));
System.Console.WriteLine("Serializing handshake response:");
System.Console.WriteLine(data.WriteToString());
return data.WriteToString();
}
public static HandshakeResponse Deserialize(string data)
{
System.Console.WriteLine("Deserializing handshake response:");
System.Console.WriteLine(data);
var handshake = new HandshakeResponse();
var ys = MiniYaml.FromString(data);
FieldLoader.Load(handshake, ys.First().Value);
return handshake;
}
}
}

5
OpenRA.Game/Network/Order.cs
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@@ -195,6 +195,11 @@ namespace OpenRA
return new Order("TeamChat", null, false) { IsImmediate = true, TargetString = text };
}
public static Order HandshakeResponse(string text)
{
return new Order("HandshakeResponse", null, false) { IsImmediate = true, TargetString = text };
}
public static Order Command(string text)
{
return new Order("Command", null, false) { IsImmediate = true, TargetString = text };

30
OpenRA.Game/Network/UnitOrders.cs
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@@ -11,6 +11,7 @@
using System.Drawing;
using System.Linq;
using OpenRA.Traits;
using System;
namespace OpenRA.Network
{
@@ -96,8 +97,37 @@ namespace OpenRA.Network
Game.StartGame(orderManager.LobbyInfo.GlobalSettings.Map);
break;
}
case "HandshakeRequest":
{
Console.WriteLine("Client: Recieved HandshakeRequest");
// Check valid mods/versions
var serverInfo = Session.Deserialize(order.TargetString);
var serverMods = serverInfo.GlobalSettings.Mods;
var localMods = orderManager.LobbyInfo.GlobalSettings.Mods;
// TODO: Check that the map exists on the client
// Todo: Display a friendly dialog
if (serverMods.SymmetricDifference(localMods).Count() > 0)
throw new InvalidOperationException("Version mismatch. Client: `{0}`, Server: `{1}`"
.F(string.Join(",",localMods), string.Join(",",serverMods)));
var response = new HandshakeResponse()
{
Name = "Test Player",
Color1 = Color.PaleGreen,
Color2 = Color.PeachPuff,
Mods = localMods,
Password = "Foo"
};
orderManager.IssueOrder(Order.HandshakeResponse(response.Serialize()));
break;
}
case "SyncInfo":
{
Console.WriteLine("Client: Recieved SyncInfo");
orderManager.LobbyInfo = Session.Deserialize(order.TargetString);
if (orderManager.FramesAhead != orderManager.LobbyInfo.GlobalSettings.OrderLatency

3
OpenRA.Game/OpenRA.Game.csproj
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@@ -1,4 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="3.5">
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -180,6 +180,7 @@
<Compile Include="Server\TraitInterfaces.cs" />
<Compile Include="Widgets\ScrollPanelWidget.cs" />
<Compile Include="Graphics\ShroudRenderer.cs" />
<Compile Include="Network\Handshake.cs" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\OpenRA.FileFormats\OpenRA.FileFormats.csproj">

64
OpenRA.Game/Server/Server.cs
View File

@@ -24,7 +24,12 @@ namespace OpenRA.Server
{
public class Server
{
// Valid player connections
public List<Connection> conns = new List<Connection>();
// Pre-verified player connections
public List<Connection> preConns = new List<Connection>();
TcpListener listener = null;
Dictionary<int, List<Connection>> inFlightFrames
= new Dictionary<int, List<Connection>>();
@@ -88,17 +93,23 @@ namespace OpenRA.Server
var checkRead = new ArrayList();
checkRead.Add( listener.Server );
foreach( var c in conns ) checkRead.Add( c.socket );
foreach( var c in preConns ) checkRead.Add( c.socket );
Socket.Select( checkRead, null, null, timeout );
foreach( Socket s in checkRead )
if( s == listener.Server ) AcceptConnection();
else if (preConns.Count > 0)
{
var p = preConns.SingleOrDefault( c => c.socket == s );
if (p != null) p.ReadData( this );
}
else if (conns.Count > 0) conns.Single( c => c.socket == s ).ReadData( this );
foreach (var t in ServerTraits.WithInterface<ITick>())
t.Tick(this);
if (conns.Count() == 0 || shutdown)
if (shutdown)
break;
}
@@ -106,6 +117,7 @@ namespace OpenRA.Server
foreach (var t in ServerTraits.WithInterface<INotifyServerShutdown>())
t.ServerShutdown(this);
preConns.Clear();
conns.Clear();
try { listener.Stop(); }
catch { }
@@ -120,7 +132,7 @@ namespace OpenRA.Server
int ChooseFreePlayerIndex()
{
for (var i = 0; i < 256; i++)
if (conns.All(c => c.PlayerIndex != i))
if (conns.All(c => c.PlayerIndex != i) && preConns.All(c => c.PlayerIndex != i))
return i;
throw new InvalidOperationException("Already got 256 players");
@@ -134,7 +146,8 @@ namespace OpenRA.Server
{
if (!listener.Server.IsBound) return;
newSocket = listener.AcceptSocket();
}catch
}
catch
{
/* could have an exception here when listener 'goes away' when calling AcceptConnection! */
/* alternative would be to use locking but the listener doesnt go away without a reason */
@@ -142,6 +155,26 @@ namespace OpenRA.Server
}
var newConn = new Connection { socket = newSocket };
try
{
newConn.socket.Blocking = false;
newConn.socket.NoDelay = true;
// assign the player number.
newConn.PlayerIndex = ChooseFreePlayerIndex();
newConn.socket.Send(BitConverter.GetBytes(ProtocolVersion.Version));
newConn.socket.Send(BitConverter.GetBytes(newConn.PlayerIndex));
preConns.Add(newConn);
// Dispatch a handshake order
DispatchOrdersToClient(newConn, 0, 0, new ServerOrder("HandshakeRequest", lobbyInfo.Serialize()).Serialize());
}
catch (Exception) { DropClient(newConn); }
}
void AcceptPlayer(Connection newConn)
{
try
{
if (GameStarted)
@@ -152,17 +185,13 @@ namespace OpenRA.Server
return;
}
newConn.socket.Blocking = false;
newConn.socket.NoDelay = true;
// assign the player number.
newConn.PlayerIndex = ChooseFreePlayerIndex();
newConn.socket.Send(BitConverter.GetBytes(ProtocolVersion.Version));
newConn.socket.Send(BitConverter.GetBytes(newConn.PlayerIndex));
preConns.Remove(newConn);
conns.Add(newConn);
foreach (var t in ServerTraits.WithInterface<IClientJoined>())
t.ClientJoined(this, newConn);
Console.WriteLine("Server: Accepted connection as player");
}
catch (Exception) { DropClient(newConn); }
}
@@ -246,7 +275,6 @@ namespace OpenRA.Server
switch (so.Name)
{
case "Command":
{
bool handled = false;
foreach (var t in ServerTraits.WithInterface<IInterpretCommand>())
if ((handled = t.InterpretCommand(this, conn, GetClient(conn), so.Data)))
@@ -257,9 +285,19 @@ namespace OpenRA.Server
Log.Write("server", "Unknown server command: {0}", so.Data);
SendChatTo(conn, "Unknown server command: {0}".F(so.Data));
}
}
break;
break;
case "HandshakeResponse":
Console.WriteLine("Server Recieved Handshake response");
var response = HandshakeResponse.Deserialize(so.Data);
// Validate versions again
// Validate password
// Accept connection; set name, color, etc.
AcceptPlayer(conn);
break;
case "Chat":
case "TeamChat":
var fromClient = GetClient(conn);