From ff0f52cc743890d11195e9ba39be067361f2d91c Mon Sep 17 00:00:00 2001
From: "Andres G. Aragoneses" <knocte@gmail.com>
Date: Wed, 14 Oct 2020 21:40:07 +0200
Subject: [PATCH] WIP: fix possible rare error-code 32 problem (seq too low)

Being hit by @Laiteux sometimes
---
 src/TgSharp.Core/Network/MtProtoSender.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/TgSharp.Core/Network/MtProtoSender.cs b/src/TgSharp.Core/Network/MtProtoSender.cs
index 932bde62..e5f59aa7 100644
--- a/src/TgSharp.Core/Network/MtProtoSender.cs
+++ b/src/TgSharp.Core/Network/MtProtoSender.cs
@@ -38,9 +38,12 @@ public MtProtoSender(TcpTransport transport, ISessionStore sessionStore, Session
         private int GenerateSequence(bool confirmed)
         {
             lock (session.Lock) {
+                var lastSequence = session.Sequence;
+                var newSequence = lastSequence + 1;
                 try {
-                    return confirmed ? session.Sequence++ * 2 + 1 : session.Sequence * 2;
+                    return confirmed ? newSequence * 2 + 1 : newSequence * 2;
                 } finally {
+                    session.Sequence = newSequence;
                     sessionStore.Save(session);
                 }
             }