Coverage for Lib/asyncio/constants.py: 100%

1# Contains code from https://github.com/MagicStack/uvloop/tree/v0.16.0 

2# SPDX-License-Identifier: PSF-2.0 AND (MIT OR Apache-2.0) 

3# SPDX-FileCopyrightText: Copyright (c) 2015-2021 MagicStack Inc. http://magic.io 

4 

5import enum 

6 

7# After the connection is lost, log warnings after this many write()s. 

8LOG_THRESHOLD_FOR_CONNLOST_WRITES = 5 

9 

10# Seconds to wait before retrying accept(). 

11ACCEPT_RETRY_DELAY = 1 

12 

13# Number of stack entries to capture in debug mode. 

14# The larger the number, the slower the operation in debug mode 

15# (see extract_stack() in format_helpers.py). 

16DEBUG_STACK_DEPTH = 10 

17 

18# Number of seconds to wait for SSL handshake to complete 

19# The default timeout matches that of Nginx. 

20SSL_HANDSHAKE_TIMEOUT = 60.0 

21 

22# Number of seconds to wait for SSL shutdown to complete 

23# The default timeout mimics lingering_time 

24SSL_SHUTDOWN_TIMEOUT = 30.0 

25 

26# Used in sendfile fallback code. We use fallback for platforms 

27# that don't support sendfile, or for TLS connections. 

28SENDFILE_FALLBACK_READBUFFER_SIZE = 1024 * 256 

29 

30FLOW_CONTROL_HIGH_WATER_SSL_READ = 256 # KiB 

31FLOW_CONTROL_HIGH_WATER_SSL_WRITE = 512 # KiB 

32 

33# Default timeout for joining the threads in the threadpool 

34THREAD_JOIN_TIMEOUT = 300 

35 

36# The enum should be here to break circular dependencies between 

37# base_events and sslproto 

38class _SendfileMode(enum.Enum): 

39 UNSUPPORTED = enum.auto() 

40 TRY_NATIVE = enum.auto() 

41 FALLBACK = enum.auto()