sqlmapproject/sqlmap · error · H2ProtocolError

response status is outside the valid range

Error message

response status is outside the valid range

What it means

Error "response status is outside the valid range" thrown in sqlmapproject/sqlmap.

Source

Thrown at lib/request/http2.py:870

        raise H2ProtocolError("conflicting content-length fields")
    return expected


def _validate_response_field_section(headers, trailers=False):
    regular_seen = False
    status = None
    for name, value in headers:
        name = _as_bytes(name)
        value = _as_bytes(value)
        _validate_field_value(value)
        if name.startswith(b":"):
            if trailers or regular_seen or name != b":status" or status is not None:
                raise H2ProtocolError("invalid response pseudo-field ordering or duplication")
            if len(value) != 3 or not value.isdigit():
                raise H2ProtocolError("invalid :status pseudo-field")
            status = int(value)
            if not 100 <= status <= 599:
                raise H2ProtocolError("response status is outside the valid range")
            if status == 101:
                raise H2ProtocolError("101 Switching Protocols is not valid in HTTP/2")
        else:
            regular_seen = True
            if name.lower() != name:
                raise H2ProtocolError("uppercase HTTP/2 field name")
            _validate_regular_name(name)
            if name in _CONNECTION_FIELDS:
                raise H2ProtocolError("connection-specific field in HTTP/2 response")
    content_length = _parse_content_length(headers, trailers=trailers)
    if trailers:
        return None, None
    if status is None:
        raise H2ProtocolError("response field section lacks :status")
    return status, content_length


class _ResponseState(object):

View on GitHub (pinned to 0a35b20e39)

When it happens

Trigger: Thrown at lib/request/http2.py:870 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of sqlmapproject/sqlmap@0a35b20e39 (2026-08-26). Data as JSON: /api/errors/743a211aceed181a. Report an issue: GitHub.