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

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

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

import enum

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

LOG_THRESHOLD_FOR_CONNLOST_WRITES = 5

# Seconds to wait before retrying accept().

ACCEPT_RETRY_DELAY = 1

# Number of stack entries to capture in debug mode.

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

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

DEBUG_STACK_DEPTH = 10

# Number of seconds to wait for SSL handshake to complete

# The default timeout matches that of Nginx.

SSL_HANDSHAKE_TIMEOUT = 60.0

# Number of seconds to wait for SSL shutdown to complete

# The default timeout mimics lingering_time

SSL_SHUTDOWN_TIMEOUT = 30.0

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

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

SENDFILE_FALLBACK_READBUFFER_SIZE = 1024 * 256

FLOW_CONTROL_HIGH_WATER_SSL_READ = 256 # KiB

FLOW_CONTROL_HIGH_WATER_SSL_WRITE = 512 # KiB

# Default timeout for joining the threads in the threadpool

THREAD_JOIN_TIMEOUT = 300

# The enum should be here to break circular dependencies between

# base_events and sslproto

class _SendfileMode(enum.Enum):

UNSUPPORTED = enum.auto()

TRY_NATIVE = enum.auto()

FALLBACK = enum.auto()