varnish content length replaced

[Anand Shah]

Hello,Using Varnish 4, I have a set of backends that're responding with a valid Content-Length header and no Transfer-Encoding header. On the first hit from a client, rather than responding to the client with those headers, Varnish is dropping the Content-Length header and adding Transfer-Encoding: chunked to the response. This is especially happening for fonts. The same data when fetched from apache and nginx works like a charm and continue to be problematic when used varnish in front. I've tried a number of semi-obvious things like below but all in vain:beresp.do_stream = trueberesp.do_gzip = falseunset req.http.Accept-EncodingSample varnishlog <backend> for your reference. *   << BeReq    >> 247282680-   Begin          bereq 247282679 fetch-   Timestamp      Start: 1430979942.850688 0.000000 0.000000-   BereqMethod    GET-   BereqURL       /ajaxprism/js_jq_1_0/css/fonts/roboto-regular-webfont.woff-   BereqProtocol  HTTP/1.1-   BereqHeader    Accept: application/font-woff;q=0.9,*/*;q=0.8-   BereqHeader    Accept-Language: en-US,en;q=0.5-   BereqHeader    Origin: http://xxx.domain.com-   BereqHeader    Pragma: no-cache-   BereqHeader    Referer: http://xxx.domain.com/ajaxprism/js_jq_1_0/css/style_2.css-   BereqHeader    User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:37.0) Gecko/20100101 Firefox/37.0-   BereqHeader    X-Forwarded-For: ::1-   BereqHeader    host: xxx.domain.com-   BereqHeader    Accept-Encoding: gzip-   BereqHeader    X-Varnish: 247282680-   VCL_call       BACKEND_FETCH-   VCL_return     fetch-   BackendClose   24 jdelivery(xxx.xxx.xxx.xxx,,80) toolate-   BackendOpen    24 jdelivery(xxx.xxx.xxx.xxx,,80) xxx.xxx.xxx.xxx 35680-   Backend        24 jdelivery jdelivery(xxx.xxx.xxx.xxx,,80)-   Timestamp      Bereq: 1430979942.852142 0.001454 0.001454-   Timestamp      Beresp: 1430979942.855756 0.005068 0.003614-   BerespProtocol HTTP/1.1-   BerespStatus   200-   BerespReason   OK-   BerespHeader   Date: Thu, 07 May 2015 06:25:43 GMT-   BerespHeader   Server: Apache-   BerespHeader   P3P: CP="ALL DSP COR LAW CUR DEVi TAI PSAi PSD IVA IVD CONo HIS TELo OUR DEL SAM BUS LOC" policyref="http://xxx.domain.com/w3c/p3p.xml"-   BerespHeader   Last-Modified: Wed, 06 May 2015 06:54:03 GMT-   BerespHeader   Accept-Ranges: bytes-   BerespHeader   Content-Length: 25008-   BerespHeader   Content-Type: application/font-woff-   TTL            RFC 120 -1 -1 1430979943 1430979943 1430979943 0 0-   VCL_call       BACKEND_RESPONSE-   TTL            VCL 120 604800 0 1430979943-   VCL_return     deliver-   Storage        file s0-   ObjProtocol    HTTP/1.1-   ObjStatus      200-   ObjReason      OK-   ObjHeader      Date: Thu, 07 May 2015 06:25:43 GMT-   ObjHeader      Server: Apache-   ObjHeader      P3P: CP="ALL DSP COR LAW CUR DEVi TAI PSAi PSD IVA IVD CONo HIS TELo OUR DEL SAM BUS LOC" policyref="http://xxx.domain.com/w3c/p3p.xml"-   ObjHeader      Last-Modified: Wed, 06 May 2015 06:54:03 GMT-   ObjHeader      Content-Type: application/font-woff-   Fetch_Body     3 length stream-   BackendReuse   24 jdelivery(xxx.xxx.xxx.xxx,,80)-   Timestamp      BerespBody: 1430979942.859386 0.008698 0.003630-   Length         25008-   BereqAcct      449 0 449 337 25008 25345-   EndRegards,Anand
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