From d04e775212ccd2d03e4ee79407c8cb996ae0f738 Mon Sep 17 00:00:00 2001
From: bfis <b.fis@cern.ch>
Date: Wed, 6 Jan 2021 13:22:04 +0100
Subject: [PATCH] Avoid 2GB read limitation on SSLIOStream

---
 tornado/iostream.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tornado/iostream.py b/tornado/iostream.py
index 768b404b1..9d8d9c7fb 100644
--- a/tornado/iostream.py
+++ b/tornado/iostream.py
@@ -1587,6 +1587,8 @@ class SSLIOStream(IOStream):
                 # to read (attempting to read may or may not raise an exception
                 # depending on the SSL version)
                 return None
+            if len(buf) >> 30:
+                buf = memoryview(buf)[: 1 << 30] 
             try:
                 return self.socket.recv_into(buf, len(buf))
             except ssl.SSLError as e:
-- 
2.47.2