bpo-29970: Make ssh_handshake_timeout None by default (#4939)

* Make ssh_handshake_timeout None by default.
* Raise ValueError if ssl_handshake_timeout is used without ssl.
* Raise ValueError if ssl_handshake_timeout is not positive.

1 files changed, 4 insertions, 5 deletions

diff --git a/Lib/asyncio/events.py b/Lib/asyncio/events.py
index c9033c0..3a5dbad 100644
--- a/Lib/asyncio/events.py
+++ b/Lib/asyncio/events.py
@@ -17,7 +17,6 @@ import subprocess
 import sys
 import threading
 
-from . import constants
 from . import format_helpers
 
 
@@ -255,7 +254,7 @@ class AbstractEventLoop:
             *, ssl=None, family=0, proto=0,
             flags=0, sock=None, local_addr=None,
             server_hostname=None,
-            ssl_handshake_timeout=constants.SSL_HANDSHAKE_TIMEOUT):
+            ssl_handshake_timeout=None):
         raise NotImplementedError
 
     async def create_server(
@@ -263,7 +262,7 @@ class AbstractEventLoop:
             *, family=socket.AF_UNSPEC,
             flags=socket.AI_PASSIVE, sock=None, backlog=100,
             ssl=None, reuse_address=None, reuse_port=None,
-            ssl_handshake_timeout=constants.SSL_HANDSHAKE_TIMEOUT):
+            ssl_handshake_timeout=None):
         """A coroutine which creates a TCP server bound to host and port.
 
         The return value is a Server object which can be used to stop
@@ -310,13 +309,13 @@ class AbstractEventLoop:
             self, protocol_factory, path=None, *,
             ssl=None, sock=None,
             server_hostname=None,
-            ssl_handshake_timeout=constants.SSL_HANDSHAKE_TIMEOUT):
+            ssl_handshake_timeout=None):
         raise NotImplementedError
 
     async def create_unix_server(
             self, protocol_factory, path=None, *,
             sock=None, backlog=100, ssl=None,
-            ssl_handshake_timeout=constants.SSL_HANDSHAKE_TIMEOUT):
+            ssl_handshake_timeout=None):
         """A coroutine which creates a UNIX Domain Socket server.
 
         The return value is a Server object, which can be used to stop