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hub / github.com/encode/starlette / __call__

Method __call__

starlette/responses.py:343–391  ·  view source on GitHub ↗
(self, scope: Scope, receive: Receive, send: Send)

Source from the content-addressed store, hash-verified

341 self.headers.setdefault("etag", etag)
342
343 async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
344 scope_type = scope["type"]
345 send_header_only = scope_type == "http" and scope["method"].upper() == "HEAD"
346 send_pathsend = scope_type == "http" and "http.response.pathsend" in scope.get("extensions", {})
347 if scope_type == "websocket":
348 send = self._wrap_websocket_denial_send(send)
349
350 if self.stat_result is None:
351 try:
352 stat_result = await anyio.to_thread.run_sync(os.stat, self.path)
353 self.set_stat_headers(stat_result)
354 except FileNotFoundError:
355 raise RuntimeError(f"File at path {self.path} does not exist.")
356 else:
357 mode = stat_result.st_mode
358 if not stat.S_ISREG(mode):
359 raise RuntimeError(f"File at path {self.path} is not a file.")
360 else:
361 stat_result = self.stat_result
362
363 headers = Headers(scope=scope)
364 http_range = headers.get("range")
365 http_if_range = headers.get("if-range")
366
367 if (
368 self.status_code != 200
369 or http_range is None
370 or (http_if_range is not None and not self._should_use_range(http_if_range))
371 ):
372 await self._handle_simple(send, send_header_only, send_pathsend)
373 else:
374 try:
375 ranges = self._parse_range_header(http_range, stat_result.st_size)
376 except MalformedRangeHeader as exc:
377 return await PlainTextResponse(exc.content, status_code=400)(scope, receive, send)
378 except RangeNotSatisfiable as exc:
379 response = PlainTextResponse(status_code=416, headers={"Content-Range": f"bytes */{exc.max_size}"})
380 return await response(scope, receive, send)
381
382 if len(ranges) == 0:
383 await self._handle_simple(send, send_header_only, send_pathsend)
384 elif len(ranges) == 1:
385 start, end = ranges[0]
386 await self._handle_single_range(send, start, end, stat_result.st_size, send_header_only)
387 else:
388 await self._handle_multiple_ranges(send, ranges, stat_result.st_size, send_header_only)
389
390 if self.background is not None:
391 await self.background()
392
393 async def _handle_simple(self, send: Send, send_header_only: bool, send_pathsend: bool) -> None:
394 await send({"type": "http.response.start", "status": self.status_code, "headers": self.raw_headers})

Callers

nothing calls this directly

Calls 11

set_stat_headersMethod · 0.95
_should_use_rangeMethod · 0.95
_handle_simpleMethod · 0.95
_parse_range_headerMethod · 0.95
_handle_single_rangeMethod · 0.95
HeadersClass · 0.90
PlainTextResponseClass · 0.85
backgroundMethod · 0.80
getMethod · 0.45

Tested by

no test coverage detected