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HTTP traffic with non-common HTTP methods does not pass through Security Gateway configured as Proxy
Symptoms
  • HTTP traffic does not pass through Security Gateway configured as Proxy.

    Example:

    When using an Apache SVN tool, the following command:
    svn checkout http://svn.apache.org/repos/asf/spamassassin/trunk spamassassin

    returns the following output:
    svn: PROPFIND of '/repos/asf/spamassassin/trunk': Could not read status line: connection was closed by proxy server (http://svn.apache.org)

  • There are no relevant logs in SmartView Tracker.

  • Kernel debug ('fw ctl debug -m WS all') shows:

    ws_parse_request_startline_fastpath: [WARNING]: Unknown method found in request; 
    ... ... ...
    ws_parse_request_startline_fastpath: [WARNING]: method NAME_of_HTTP_METHOD is unknown to parser; 
    

    Example:

    ;25Jan2015 18:50:02.266792;[cpu_1];[fw4_0];1422211802:{pkt_dump} [SID: 00044] ws_stream_debug_print: Printing bucket number:1 pointer:0xe5cf523c stream offset in bucket:0 stream data len:402;
    ;25Jan2015 18:50:02.266802;[cpu_1];[fw4_0];     0:  ... ... ...     PROPFIND http://;
    ;25Jan2015 18:50:02.266811;[cpu_1];[fw4_0];    16:  ... ... ...     svn.apache.org/r;
    ;25Jan2015 18:50:02.266820;[cpu_1];[fw4_0];    32:  ... ... ...     epos/asf/spamass;
    ;25Jan2015 18:50:02.266830;[cpu_1];[fw4_0];    48:  ... ... ...     assin/trunk HTTP;
    ;25Jan2015 18:50:02.266840;[cpu_1];[fw4_0];    64:  ... ... ...     /1.1..User-Agent;
    ;25Jan2015 18:50:02.266849;[cpu_1];[fw4_0];    80:  ... ... ...     : SVN/1.6.17 (r1;
    ;25Jan2015 18:50:02.266855;[cpu_1];[fw4_0];    96:  ... ... ...     128011)
    ... ... ...
    ;25Jan2015 18:50:02.268740;[cpu_1];[fw4_0];1422211802:{parser} [SID: 00044] ws_parse_request_startline_fastpath: [WARNING]: Unknown method found in request; 
    ... ... ...
    ;25Jan2015 18:50:02.268755;[cpu_1];[fw4_0];1422211802:{parser} [SID: 00044] ws_parse_request_startline_fastpath: [WARNING]: method PROPFIND is unknown to parser; 
    
Cause

Non-common HTTP methods are not supported by the proxy (especially of the WebDAV and DeltaV extensions, such as PROPFIND, REPORT).


Solution
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