mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-03 16:39:00 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

asyncio: Skip getaddrinfo if host is already resolved.

Browse source 
getaddrinfo takes an exclusive lock on some platforms, causing clients to queue
up waiting for the lock if many names are being resolved concurrently. Users
may want to handle name resolution in their own code, for the sake of caching,
using an alternate resolver, or to measure DNS duration separately from
connection duration. Skip getaddrinfo if the "host" passed into
create_connection is already resolved.

See https://github.com/python/asyncio/pull/302 for details.

Patch by A. Jesse Jiryu Davis.
This commit is contained in:
Yury Selivanov 2015-12-16 19:31:17 -05:00
parent 8c084eb77d
commit d5c2a62100
7 changed files with 283 additions and 67 deletions
Download patch file Download diff file Expand all files Collapse all files

4
Lib/test/test_asyncio/test_events.py
View file

@ -1573,10 +1573,6 @@ class EventLoopTestsMixin:
'selector': self.loop._selector.__class__.__name__})
def test_sock_connect_address(self):
# In debug mode, sock_connect() must ensure that the address is already
# resolved (call _check_resolved_address())
self.loop.set_debug(True)
addresses = [(socket.AF_INET, ('www.python.org', 80))]
if support.IPV6_ENABLED:
addresses.extend((