How to compress web service response json in ajax call -

i using asmx web service , calling through ajax as

          $.ajax({         url: 'xxxxxxx.asmx/getxxxxxxxx',         method: 'post',         contenttype: 'application/json; charset=utf-8',         datatype: 'json',         success: function (data) {             $(data.d).each(function (index, category) {  

my service returns list of objects. reading on how compress response of web service , seems me need override getwebrequest method , use gzip/deflate (in class derived web service proxy class).

the next step use instance of class (which overrides getwebrequest) , use in application.

since, using ajax call, not sure how use instance of class overrides getwebrequest method.

thank you.

in order send compressed response client, web-service, must using content-encoding field , set value compress.

   content-encoding: gzip 

but, before must check value of "accept-encoding" header send client. possible values header

   accept-encoding: compress, gzip    accept-encoding:    accept-encoding: *    accept-encoding: compress;q=0.5, gzip;q=1.0    accept-encoding: gzip;q=1.0, identity; q=0.5, *;q=0 

the above mentioned guidelines applicable, irrespective of whatever language/technology using.

for more information of http protocol headers, refer

https://www.w3.org/protocols/rfc2616/rfc2616-sec14.html

edit

"accept-encoding" request header must set in ajax request. can that, setting "headers" in ajax request follow :

  $.ajax({     url: 'xxxxxxx.asmx/getxxxxxxxx',     method: 'post',     contenttype: 'application/json; charset=utf-8',     datatype: 'json',     headers: {        "my-first-header":"first value",        "my-second-header":"second value"     }     success: function (data) {}   });