Is iOS removing the Content-MD5 HTTP header? -

Is iOS removing the Content-MD5 HTTP header? -

i utilize web application that's returning content-md5 header in ios app, cannot retrieve header using [nshttpurlresponse allheaderfields] (whereas can see when utilize curl).

does know if ios deliberately removing header?

so i've figured out what's happened.

our saas provider has activated gzip default on non-production instances. mentioned in other threads, nsurlconnection supports gzip compression transparently , automatically send accept-encoding: gzip http header. when response received, nsurlconnection decompresses content , removes content-md5 header (because content-md5 hash of compressed data), why i'm not seeing in list of received headers.

ios