sqlmapproject/sqlmap · error · SqlmapCompressionException

large compressed response detected. Disabling compression

Error message

large compressed response detected. Disabling compression

What it means

Error "large compressed response detected. Disabling compression" thrown in sqlmapproject/sqlmap.

Source

Thrown at lib/request/connect.py:292

        logger.debug("rate-limited (HTTP %d)%s; sleeping %.1f second(s), inter-request delay now %.1f second(s)" % (code, " honoring 'Retry-After'" if retryAfter is not None else "", backoff, conf.delay))

        time.sleep(backoff)
        return Connect._retryProxy(**kwargs)

    @staticmethod
    def _connReadProxy(conn):
        parts = []
        kb.respTruncated = False

        if not kb.dnsMode and conn:
            headers = conn.info()
            if kb.pageCompress and headers and hasattr(headers, "getheader") and (headers.getheader(HTTP_HEADER.CONTENT_ENCODING, "").lower() in ("gzip", "deflate") or "text" not in headers.getheader(HTTP_HEADER.CONTENT_TYPE, "").lower()):
                part = conn.read(MAX_CONNECTION_TOTAL_SIZE)
                if len(part) == MAX_CONNECTION_TOTAL_SIZE:
                    warnMsg = "large compressed response detected. Disabling compression"
                    singleTimeWarnMessage(warnMsg)
                    kb.pageCompress = False
                    raise SqlmapCompressionException
                parts.append(part)
            else:
                while True:
                    if not conn:
                        break
                    else:
                        try:
                            part = conn.read(MAX_CONNECTION_READ_SIZE)
                        except AssertionError:
                            part = b""

                    if len(part) == MAX_CONNECTION_READ_SIZE:
                        warnMsg = "large response detected. This could take a while"
                        singleTimeWarnMessage(warnMsg)
                        part = re.sub(getBytes(r"(?si)%s.+?%s" % (kb.chars.stop, kb.chars.start)), getBytes("%s%s%s" % (kb.chars.stop, LARGE_READ_TRIM_MARKER, kb.chars.start)), part)
                        parts.append(part)
                        kb.respTruncated = True  # response exceeded the read cap and was trimmed (signal for chunked UNION dumping)
                    else:

View on GitHub (pinned to 0a35b20e39)

When it happens

Trigger: Thrown at lib/request/connect.py:292 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/9d924bdf06b1fd40. Report an issue: GitHub.