[Varnish] #1826: 503 backend error after response with 204 without a body, varnish 4.1

[Varnish]

#1826: 503 backend error after response with 204 without a body, varnish 4.1
--------------------------+-----------------------
 Reporter:  xrowkristina  |       Owner:
     Type:  defect        |      Status:  reopened
 Priority:  high          |   Milestone:
Component:  build         |     Version:  4.1.0
 Severity:  normal        |  Resolution:
 Keywords:                |
--------------------------+-----------------------
Changes (by xrowkristina):

 * status:  closed => reopened
 * resolution:  invalid =>


Comment:

 Ok, is this maybe a bug in our VCL? Because if I sent a request via curl I
 didn't get Content-Length:

 {{{

 /var/www/www.wuv.de # curl
 'http://localhost/sso/linksubscription?access_token=ZDQxY2E2N2IxZGM1MTlmZDRjOGVjYTA2NmJiMGVjNjE2MGUxNDFlNjhiODM1MDY3YmQxZmU1YmNkMzUyYmYzNg&abonummer=43433443534535345'
 -H 'Host: kundenkonto-test.wuv.de' -H 'Accept-Language: de-DE,de;q=0.8,en-
 US;q=0.6,en;q=0.4' -H 'Upgrade-Insecure-Requests: 1' -H 'User-Agent:
 Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko)
 Chrome/46.0.2490.71 Safari/537.36' -H 'Accept:
 text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
 -H 'Cache-Control: max-age=0' -H 'Cookie: BIGipServerlb-
 varnish.wuvtest.de_6081=1678581420.49431.0000;
 eZSESSID=qrp3li6mn4rcq9kj4778sd2cn6; wuv-p=1678581420.49431.0000' -I

 }}}

 {{{
 HTTP/1.1 204 No Content
 Date: Thu, 03 Dec 2015 17:19:12 GMT
 Server: Apache/2.4.7 (Ubuntu)
 X-Powered-By: PHP/5.5.9-1ubuntu4.9
 Cache-Control: max-age=0, must-revalidate, public, s-maxage=0
 X-Cache-Debug: 1
 Vary:
 X-Debug-Token: fd8676
 X-Debug-Token-Link: /_profiler/fd8676
 Content-Type: text/html; charset=utf-8
 }}}

 Thanks a lot

 Kristina

-- 
Ticket URL: <https://www.varnish-cache.org/trac/ticket/1826#comment:4>
Varnish <https://varnish-cache.org/>
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