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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
# 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()
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