sqlmapproject/sqlmap · error · H2ProtocolError

invalid regular field name

Error message

invalid regular field name

What it means

Error "invalid regular field name" thrown in sqlmapproject/sqlmap.

Source

Thrown at lib/request/http2.py:677

        context.options |= no_compression
    setter = getattr(context, "set_alpn_protocols", None)
    if setter is None:
        raise H2Error("this Python/OpenSSL build does not support ALPN")
    setter(["h2"])
    return context


def _iter_header_items(headers):
    if headers is None:
        return []
    if hasattr(headers, "items"):
        return list(headers.items())
    return list(headers)


def _validate_regular_name(name):
    if not name or name.startswith(b":"):
        raise H2ProtocolError("invalid regular field name")
    for item in bytearray(name):
        if item not in _TOKEN_BYTES:
            raise H2ProtocolError("invalid HTTP field name %r" % name)


def _validate_field_value(value):
    if b"\x00" in value or b"\r" in value or b"\n" in value:
        raise H2ProtocolError("invalid control character in HTTP field value")
    if value[:1] in (b" ", b"\t") or value[-1:] in (b" ", b"\t"):
        raise H2ProtocolError("HTTP/2 field values may not have leading/trailing whitespace")


def _validate_pseudo_value(name, value):
    _validate_field_value(value)
    for item in bytearray(value):
        if item < 0x21 or item > 0x7e:
            raise H2ProtocolError("invalid octet in %s pseudo-field" % name)

View on GitHub (pinned to 0a35b20e39)

When it happens

Trigger: Thrown at lib/request/http2.py:677 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/a0a40eed00d95a3c. Report an issue: GitHub.