Hello, Per this blog
https://www.varnish-software.com/blog/varnish-40-qa-performance-vmods-ssl-ims-swr-and-more I thought Varnish 4.0.1 has support for IMS. But looks like varnish is not sending the IMS header to the backend. Or I'm missing something. * << Request >> 32820 - ReqHeader User-Agent: curl/7.24.0 (x86_64-apple-darwin12.0) libcurl/7.24.0 OpenSSL/0.9.8y zlib/1.2.5 - ReqHeader Host: <<host>> - ReqHeader Accept: */* - ReqHeader If-Modified-Since: Sat, 05 Oct 2013 10:19:56 GMT - ReqHeader X-Forwarded-For: <<ip>> - BereqHeader User-Agent: curl/7.24.0 (x86_64-apple-darwin12.0) libcurl/7.24.0 OpenSSL/0.9.8y zlib/1.2.5 - BereqHeader Host: <<host>> - BereqHeader Accept: */* - BereqHeader X-Forwarded-For: <<ip>> - BereqHeader Accept-Encoding: gzip - BereqHeader X-Varnish: 65570 Is IMS enabled in Varnish ? or is it still in the experimental branch. Given varnish is being used to serve images, we'd like to cut down on the traffic between varnish cache and backend server as much as possible. thank you, Madhu
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