| 137 | |
| 138 | class _NetworkBackend(_CoreAsyncNetworkBackend): |
| 139 | def __init__(self, resolver, local_port, bootstrap_address, family): |
| 140 | super().__init__() |
| 141 | self._local_port = local_port |
| 142 | self._resolver = resolver |
| 143 | self._bootstrap_address = bootstrap_address |
| 144 | self._family = family |
| 145 | if local_port != 0: |
| 146 | raise NotImplementedError( |
| 147 | "the asyncio transport for HTTPX cannot set the local port" |
| 148 | ) |
| 149 | |
| 150 | async def connect_tcp( |
| 151 | self, host, port, timeout=None, local_address=None, socket_options=None |