1 files changed, 10 insertions, 0 deletions
diff --git a/lib-python/3/asyncio/selector_events.py b/lib-python/3/asyncio/selector_events.py
index 23bd8ad849..fa8f0cd759 100644
--- a/lib-python/3/asyncio/selector_events.py
+++ b/lib-python/3/asyncio/selector_events.py
@@ -39,6 +39,11 @@ def _test_selector_event(selector, fd, event):
         return bool(key.events & event)
 
 
+def _check_ssl_socket(sock):
+    if ssl is not None and isinstance(sock, ssl.SSLSocket):
+        raise TypeError("Socket cannot be of type SSLSocket")
+
+
 class BaseSelectorEventLoop(base_events.BaseEventLoop):
     """Selector event loop.
 
@@ -345,6 +350,7 @@ class BaseSelectorEventLoop(base_events.BaseEventLoop):
         The maximum amount of data to be received at once is specified by
         nbytes.
         """
+        _check_ssl_socket(sock)
         if self._debug and sock.gettimeout() != 0:
             raise ValueError("the socket must be non-blocking")
         fut = self.create_future()
@@ -378,6 +384,7 @@ class BaseSelectorEventLoop(base_events.BaseEventLoop):
         The received data is written into *buf* (a writable buffer).
         The return value is the number of bytes written.
         """
+        _check_ssl_socket(sock)
         if self._debug and sock.gettimeout() != 0:
             raise ValueError("the socket must be non-blocking")
         fut = self.create_future()
@@ -415,6 +422,7 @@ class BaseSelectorEventLoop(base_events.BaseEventLoop):
         raised, and there is no way to determine how much data, if any, was
         successfully processed by the receiving end of the connection.
         """
+        _check_ssl_socket(sock)
         if self._debug and sock.gettimeout() != 0:
             raise ValueError("the socket must be non-blocking")
         fut = self.create_future()
@@ -451,6 +459,7 @@ class BaseSelectorEventLoop(base_events.BaseEventLoop):
 
         This method is a coroutine.
         """
+        _check_ssl_socket(sock)
         if self._debug and sock.gettimeout() != 0:
             raise ValueError("the socket must be non-blocking")
 
@@ -508,6 +517,7 @@ class BaseSelectorEventLoop(base_events.BaseEventLoop):
         object usable to send and receive data on the connection, and address
         is the address bound to the socket on the other end of the connection.
         """
+        _check_ssl_socket(sock)
         if self._debug and sock.gettimeout() != 0:
             raise ValueError("the socket must be non-blocking")
         fut = self.create_future()