Avoid 2GB read limitation on SSLIOStream

diff --git a/tornado/iostream.py b/tornado/iostream.py
index 768b404b1ba52edf7b6209941d1b6de53dcb0a16..9d8d9c7fbebfc0315435f0787f0d553805a954c8 100644 (file)
--- 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: