Function parse_line

src/websockets/http11.py:302–326

Parse a single line. CRLF is stripped from the return value. Args: read_line: Generator-based coroutine that reads a LF-terminated line or raises an exception if there isn't enough data. Raises: EOFError: If the connection is closed without a CRLF.

(
    read_line: Callable[[int], Generator[None, None, bytes | bytearray]],
)

def parse_line(
    read_line: Callable[[int], Generator[None, None, bytes | bytearray]],
) -> Generator[None, None, bytes | bytearray]:
    """
    Parse a single line.

    CRLF is stripped from the return value.

    Args:
        read_line: Generator-based coroutine that reads a LF-terminated line
            or raises an exception if there isn't enough data.

    Raises:
        EOFError: If the connection is closed without a CRLF.
        SecurityError: If the response exceeds a security limit.

    """
    try:
        line = yield from read_line(MAX_LINE_LENGTH)
    except RuntimeError:
        raise SecurityError("line too long")
    # Not mandatory but safe - https://datatracker.ietf.org/doc/html/rfc7230#section-3.5
    if not line.endswith(b"\r\n"):
        raise EOFError("line without CRLF")
    return line[:-2]


def parse_headers(