fix: add httpx timeout (#31)

Author: danielbrunt57

authcaptureproxy/auth_capture_proxy.py

@@ -66,7 +66,15 @@ def __init__(
         """
         self._preserve_headers = preserve_headers
         self.session_factory: Callable[[], httpx.AsyncClient] = session_factory or (
-            lambda: httpx.AsyncClient(verify=ssl_context)
+            lambda: httpx.AsyncClient(
+                verify=ssl_context,
+                timeout=httpx.Timeout(
+                    connect=10.0,
+                    read=30.0,
+                    write=10.0,
+                    pool=10.0,
+                ),
+            )
         )
         self.session: httpx.AsyncClient = session if session else self.session_factory()
         self._proxy_url: URL = proxy_url
@@ -462,6 +470,20 @@ async def _process_multipart(reader: MultipartReader, writer: MultipartWriter) -
                 return await self._build_response(
                     text=f"Error connecting to {site}; too may redirects: {ex}"
                 )
+            except httpx.TimeoutException as ex:
+                _LOGGER.warning(
+                    "Timeout during proxy request to %s: %s",
+                    site,
+                    ex.__class__.__name__,
+                )
+                return await self._build_response(
+                    text=(
+                        "Timed out while contacting the service during login.\n\n"
+                        "This is usually caused by slow or blocked network access. "
+                        "Please retry, or check DNS resolution, firewall rules, proxy/VPN settings, "
+                        "and that the service endpoint is reachable from this host."
+                    )
+                )
         if resp is None:
             return await self._build_response(text=f"Error connecting to {site}; please retry")
         self.last_resp = resp