Function create_collapsing_task_group

starlette/_utils.py:105–115

()

@asynccontextmanager
async def create_collapsing_task_group() -> AsyncGenerator[anyio.abc.TaskGroup, None]:
    try:
        async with anyio.create_task_group() as tg:
            yield tg
    except BaseExceptionGroup as excs:
        if len(excs.exceptions) != 1:
            raise

        exc = excs.exceptions[0]
        context = None if exc.__suppress_context__ else exc.__context__
        raise exc from exc.__cause__ or context


def parse_host_header(host_header: str | None) -> ParsedHost | None: