From f45ee2ab4d198d729fbcd138b218c88245203c1e Mon Sep 17 00:00:00 2001
From: holger krekel <holger@merlinux.eu>
Date: Fri, 27 Sep 2019 04:01:43 +0200
Subject: [PATCH] fix #615 -- like with c-core Chat-Version is left in
 unprotected headers because it's eg used in server-filters for detecting DC
 messages

---
 src/e2ee.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/e2ee.rs b/src/e2ee.rs
index 0001303cc..a4e2cffd7 100644
--- a/src/e2ee.rs
+++ b/src/e2ee.rs
@@ -182,7 +182,8 @@ impl EncryptHelper {
                         let opt_field = (*field).fld_data.fld_optional_field;
                         if !opt_field.is_null() && !(*opt_field).fld_name.is_null() {
                             let fld_name = to_string_lossy((*opt_field).fld_name);
-                            if fld_name.starts_with("Secure-Join") || fld_name.starts_with("Chat-")
+                            if fld_name.starts_with("Secure-Join")
+                                || (fld_name.starts_with("Chat-") && fld_name != "Chat-Version")
                             {
                                 move_to_encrypted = true;
                             }