Receiving messages without polling.

TLSharp.Core/Network/Exceptions.cs

@@ -0,0 +1,69 @@
+using System;
+namespace TLSharp.Core.Network
+{
+    public class FloodException : Exception
+    {
+        public TimeSpan TimeToWait { get; private set; }
+
+        internal FloodException(TimeSpan timeToWait)
+            : base($"Flood prevention. Telegram now requires your program to do requests again only after {timeToWait.TotalSeconds} seconds have passed ({nameof(TimeToWait)} property)." +
+                    " If you think the culprit of this problem may lie in TLSharp's implementation, open a Github issue please.")
+        {
+            TimeToWait = timeToWait;
+        }
+    }
+
+    public class BadMessageException : Exception
+    {
+        internal BadMessageException(string description) : base(description)
+        {
+        }
+    }
+
+    internal abstract class DataCenterMigrationException : Exception
+    {
+        internal int DC { get; private set; }
+
+        private const string REPORT_MESSAGE =
+            " See: https://github.com/sochix/TLSharp#i-get-a-xxxmigrationexception-or-a-migrate_x-error";
+
+        protected DataCenterMigrationException(string msg, int dc) : base(msg + REPORT_MESSAGE)
+        {
+            DC = dc;
+        }
+    }
+
+    internal class PhoneMigrationException : DataCenterMigrationException
+    {
+        internal PhoneMigrationException(int dc)
+            : base($"Phone number registered to a different DC: {dc}.", dc)
+        {
+        }
+    }
+
+    internal class FileMigrationException : DataCenterMigrationException
+    {
+        internal FileMigrationException(int dc)
+            : base($"File located on a different DC: {dc}.", dc)
+        {
+        }
+    }
+
+    internal class UserMigrationException : DataCenterMigrationException
+    {
+        internal UserMigrationException(int dc)
+            : base($"User located on a different DC: {dc}.", dc)
+        {
+        }
+    }
+
+    internal class NetworkMigrationException : DataCenterMigrationException
+    {
+        internal NetworkMigrationException(int dc)
+            : base($"Network located on a different DC: {dc}.", dc)
+        {
+        }
+    }
+
+
+}