Basic support for UDP client messages using OnlineEventGenerator

Author: compujuckel

AssettoServer/Network/ClientMessages/OnlineEventAttribute.cs

@@ -8,4 +8,5 @@ namespace AssettoServer.Network.ClientMessages;
 public class OnlineEventAttribute : Attribute
 {
     public string? Key { get; set; }
+    public bool Udp { get; set; }
 }

AssettoServer/Network/ClientMessages/OnlineEventGenerator.cs

@@ -96,8 +96,8 @@ private static bool IsArrayLikeType(Type type)
 
     internal static OnlineEventInfo ParseClientMessage(Type messageType)
     {
-        var mainAttr = messageType.GetCustomAttribute<OnlineEventAttribute>();
-        var key = mainAttr?.Key;
+        var mainAttr = messageType.GetCustomAttribute<OnlineEventAttribute>() ?? new OnlineEventAttribute();
+        var key = mainAttr.Key;
 
         var ordered = new List<OnlineEventFieldInfo?>();
 
@@ -158,6 +158,7 @@ internal static OnlineEventInfo ParseClientMessage(Type messageType)
         var ret = new OnlineEventInfo
         {
             Key = key,
+            Udp = mainAttr.Udp,
             Fields = reordered,
             Structure = structure,
             PacketType = GenerateKey(structure)
@@ -238,7 +239,7 @@ internal static OnlineEvent<TMessage>.ToWriterDelegate GenerateWriterMethod<TMes
         emitter.Call(writeByteMethod);
 
         emitter.LoadArgument(1);
-        emitter.LoadConstant((int)CSPMessageTypeTcp.ClientMessage);
+        emitter.LoadConstant(message.Udp ? (int)CSPMessageTypeUdp.ClientMessage : (int)CSPMessageTypeTcp.ClientMessage);
         emitter.Call(writeByteMethod);
 
         emitter.LoadArgument(1);

AssettoServer/Network/ClientMessages/OnlineEventInfo.cs

@@ -5,6 +5,7 @@ namespace AssettoServer.Network.ClientMessages;
 internal class OnlineEventInfo
 {
     public string? Key { get; init; }
+    public bool Udp { get; init; }
     public required List<OnlineEventFieldInfo> Fields { get; init; }
     public uint PacketType { get; init; }
     public required string Structure { get; init; }