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| """ | |
| Defines helper methods useful for setting up ports, launching servers, and | |
| creating tunnels. | |
| """ | |
| from __future__ import annotations | |
| import os | |
| import time | |
| import warnings | |
| from pathlib import Path | |
| import httpx | |
| from gradio.routes import App # HACK: to avoid circular import # noqa: F401 | |
| from gradio.tunneling import CERTIFICATE_PATH, Tunnel | |
| GRADIO_API_SERVER = "https://api.gradio.app/v3/tunnel-request" | |
| GRADIO_SHARE_SERVER_ADDRESS = os.getenv("GRADIO_SHARE_SERVER_ADDRESS") | |
| def setup_tunnel( | |
| local_host: str, local_port: int, share_token: str, share_server_address: str | None | |
| ) -> str: | |
| share_server_address = ( | |
| GRADIO_SHARE_SERVER_ADDRESS | |
| if share_server_address is None | |
| else share_server_address | |
| ) | |
| if share_server_address is None: | |
| try: | |
| response = httpx.get(GRADIO_API_SERVER, timeout=30) | |
| payload = response.json()[0] | |
| remote_host, remote_port = payload["host"], int(payload["port"]) | |
| certificate = payload["root_ca"] | |
| Path(CERTIFICATE_PATH).parent.mkdir(parents=True, exist_ok=True) | |
| with open(CERTIFICATE_PATH, "w") as f: | |
| f.write(certificate) | |
| except Exception as e: | |
| raise RuntimeError( | |
| "Could not get share link from Gradio API Server." | |
| ) from e | |
| else: | |
| remote_host, remote_port = share_server_address.split(":") | |
| remote_port = int(remote_port) | |
| tunnel = Tunnel(remote_host, remote_port, local_host, local_port, share_token) | |
| address = tunnel.start_tunnel() | |
| return address | |
| def url_ok(url: str) -> bool: | |
| try: | |
| for _ in range(5): | |
| with warnings.catch_warnings(): | |
| warnings.filterwarnings("ignore") | |
| r = httpx.head(url, timeout=3, verify=False) | |
| if ( | |
| r.status_code in (200, 401, 302, 303, 307) | |
| ): # 401 or 302 if auth is set; 303 or 307 are alternatives to 302 for temporary redirects | |
| return True | |
| time.sleep(0.500) | |
| except (ConnectionError, httpx.ConnectError, httpx.TimeoutException): | |
| return False | |
| return False | |