sqlmapproject/sqlmap · error · H2Error

request header list exceeds peer-advertised limit

Error message

request header list exceeds peer-advertised limit

What it means

Error "request header list exceeds peer-advertised limit" thrown in sqlmapproject/sqlmap.

Source

Thrown at lib/request/http2.py:1068

            self._connection_error("WINDOW_UPDATE referenced an idle stream")

    def _allocate_stream_ids(self, count):
        if count <= 0:
            raise ValueError("stream count must be positive")
        last = self.next_sid + 2 * (count - 1)
        if last > MAX_STREAM_ID:
            self.usable = False
            raise H2Error("HTTP/2 stream-id space exhausted")
        sids = [self.next_sid + 2 * index for index in range(count)]
        self.next_sid += 2 * count
        if self.next_sid > MAX_STREAM_ID:
            self.usable = False
        return sids

    def _send_headers(self, sid, request_headers, end_stream):
        if self.peer_max_header_list_size is not None:
            if _field_section_size(request_headers) > self.peer_max_header_list_size:
                raise H2Error("request header list exceeds peer-advertised limit")
        block = Encoder().encode(request_headers)
        return b"".join(_header_frames(sid, block, self.peer_max_frame_size, end_stream))

    def _finish_response(self, state):
        actual = len(state.body)
        if state.body_forbidden and actual:
            self._connection_error("response semantics forbid a message body")
        if (not state.body_forbidden and state.expected_content_length is not None and
                actual != state.expected_content_length):
            self._connection_error(
                "response content-length mismatch (expected %d, received %d)" %
                (state.expected_content_length, actual)
            )
        state.complete = True

    def _complete_header_block(self, state):
        try:
            headers = self.dec.decode(bytes(state.block))

View on GitHub (pinned to 0a35b20e39)

When it happens

Trigger: Thrown at lib/request/http2.py:1068 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/d745edc1780eaf2f. Report an issue: GitHub.