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|
import socket
import ssl
from typing import Union
from ._ssl_transport import SSLTransport
from ..._errors import ProxyError
from ... import _abc as abc
DEFAULT_RECEIVE_SIZE = 65536
SocketType = Union[socket.socket, ssl.SSLSocket, SSLTransport]
class SyncSocketStream(abc.SyncSocketStream):
_socket: SocketType
def __init__(self, sock: SocketType):
self._socket = sock
def write_all(self, data):
self._socket.sendall(data)
def read(self, max_bytes=DEFAULT_RECEIVE_SIZE):
return self._socket.recv(max_bytes)
def read_exact(self, n):
data = bytearray()
while len(data) < n:
packet = self._socket.recv(n - len(data))
if not packet: # pragma: no cover
raise ProxyError('Connection closed unexpectedly')
data += packet
return data
def start_tls(self, hostname: str, ssl_context: ssl.SSLContext) -> 'SyncSocketStream':
if isinstance(self._socket, (ssl.SSLSocket, SSLTransport)):
ssl_socket = SSLTransport(
self._socket,
ssl_context=ssl_context,
server_hostname=hostname,
)
else: # plain socket?
ssl_socket = ssl_context.wrap_socket(
self._socket,
server_hostname=hostname,
)
return SyncSocketStream(ssl_socket)
def close(self):
self._socket.close()
@property
def socket(self) -> SocketType: # pragma: nocover
return self._socket
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