Class InvalidHeader

src/websockets/exceptions.py:260–276

Raised when an HTTP header doesn't have a valid format or value.

class InvalidHeader(InvalidHandshake):
    """
    Raised when an HTTP header doesn't have a valid format or value.

    """

    def __init__(self, name: str, value: str | None = None) -> None:
        self.name = name
        self.value = value

    def __str__(self) -> str:
        if self.value is None:
            return f"missing {self.name} header"
        elif self.value == "":
            return f"empty {self.name} header"
        else:
            return f"invalid {self.name} header: {self.value}"


class InvalidHeaderFormat(InvalidHeader):