Mark most classes as sealed & partial

.github/dev.yml

@@ -1,7 +1,7 @@
 pr: none
 trigger: [ master ]
 
-name: 3.7.2-dev.$(Rev:r)
+name: 4.0.0-dev.$(Rev:r)
 
 pool:
   vmImage: ubuntu-latest

.github/release.yml

@@ -1,7 +1,7 @@
 pr: none
 trigger: none
 
-name: 3.7.$(Rev:r)
+name: 4.0.0
 
 pool:
   vmImage: ubuntu-latest

.gitignore

@@ -3,6 +3,8 @@
 ##
 ## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
 
+launchSettings.json
+
 # User-specific files
 *.rsuser
 *.suo

src/Client.cs

@@ -625,7 +625,7 @@ private RpcResult ReadRpcResult(BinaryReader reader)
 			return new RpcResult { req_msg_id = msgId, result = result };
 		}
 
-		class Rpc
+		private sealed class Rpc
 		{
 			internal Type type;
 			internal TaskCompletionSource<object> tcs = new(TaskCreationOptions.RunContinuationsAsynchronously);

src/Encryption.cs

@@ -319,7 +319,7 @@ internal static byte[] AES_IGE_EncryptDecrypt(Span<byte> input, byte[] aes_key,
 		}
 
 #if OBFUSCATION
-		internal class AesCtr(byte[] key, byte[] ivec) : IDisposable
+		internal sealed class AesCtr(byte[] key, byte[] ivec) : IDisposable
 		{
 			readonly ICryptoTransform _encryptor = AesECB.CreateEncryptor(key, null);
 			readonly byte[] _ecount = new byte[16];
@@ -518,7 +518,7 @@ private static byte[] PBKDF2_SHA512(byte[] password, byte[] salt, int iterationC
 #endif
 	}
 
-	internal class AES_IGE_Stream : Helpers.IndirectStream
+	internal sealed class AES_IGE_Stream : Helpers.IndirectStream
 	{
 		private readonly ICryptoTransform _aesCrypto;
 		private readonly byte[] _prevBytes;

src/SecretChats.cs

@@ -37,7 +37,7 @@ public sealed class SecretChats : IDisposable
 		private const int ThresholdPFS = 100;
 
 		[TLDef(0xFEFEFEFE)]
-		internal class SecretChat : IObject, ISecretChat
+		internal sealed class SecretChat : IObject, ISecretChat
 		{
 			[Flags] public enum Flags : uint { requestChat = 1, renewKey = 2, acceptKey = 4, originator = 8, commitKey = 16 }
 			public Flags flags;

src/Session.cs

@@ -11,15 +11,15 @@
 
 namespace WTelegram
 {
-	internal class Session : IDisposable
+	internal sealed partial class Session : IDisposable
 	{
 		public int ApiId;
 		public long UserId;
 		public int MainDC;
 		public Dictionary<int, DCSession> DCSessions = [];
 		public TL.DcOption[] DcOptions;
 
-		public class DCSession
+		public sealed class DCSession
 		{
 			public long Id;
 			public long AuthKeyID;
@@ -158,7 +158,7 @@ internal static Session LoadOrCreate(Stream store, byte[] rgbKey)
 		}
 	}
 
-	internal class SessionStore : FileStream // This class is designed to be high-performance and failure-resilient with Writes                  (but when you're Andrei, you can't understand that)
+	internal sealed class SessionStore : FileStream // This class is designed to be high-performance and failure-resilient with Writes                  (but when you're Andrei, you can't understand that)
 	{
 		public override long Length { get; }
 		public override long Position { get => base.Position; set { } }
@@ -192,7 +192,7 @@ public override void Write(byte[] buffer, int offset, int count)
 		}
 	}
 
-	internal class ActionStore(byte[] initial, Action<byte[]> save) : MemoryStream(initial ?? [])
+	internal sealed class ActionStore(byte[] initial, Action<byte[]> save) : MemoryStream(initial ?? [])
 	{
 		public override void Write(byte[] buffer, int offset, int count) => save(buffer[offset..(offset + count)]);
 		public override void SetLength(long value) { }

src/TL.Extensions.cs

@@ -11,7 +11,7 @@ namespace TL
 {
 	public static class Extensions
 	{
-		internal class CollectorPeer : Peer
+		internal sealed partial class CollectorPeer : Peer
 		{
 			public override long ID => 0;
 			internal IDictionary<long, User> _users;