jquery.ajax() POST receives empty response with IE10 on Nginx/PHP-FPM but works on Apache -

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i use simple jquery.ajax() call fetch html snippet server:

// init add lines button $('body').on('click', '.add-lines', function(e) {     $.ajax({         type        : 'post',         url         : $(this).attr('href')+'?ajax=1&addlines=1',         data        : $('#quickorder').serialize(),         success     : function(data,x,y) {             $('#directorderform').replacewith(data);         },         datatype    : 'html'     });     e.preventdefault(); });

on php side echo out html string. jquery version 1.8.3.

the problem in ie10: while works fine there on server a runs on apache fails on server b runs on nginx + php-fpm: if debug success handler on server b undefined data. in network tab of ie developer tools can see full response , headers. may affect other ie versions, test ie10 far.

here 2 response headers:

server a, apache (works):

http/1.1 200 ok date: thu, 25 apr 2013 13:28:08 gmt server: apache expires: thu, 19 nov 1981 08:52:00 gmt cache-control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 pragma: no-cache vary: accept-encoding,user-agent content-encoding: gzip content-length: 1268 keep-alive: timeout=2, max=100 connection: keep-alive content-type: text/html; charset=utf-8

server b, nginx + php-fpm (fails):

http/1.1 200 ok server: nginx/1.1.19 date: thu, 25 apr 2013 13:41:43 gmt content-type: text/html; charset=utf8 transfer-encoding: chunked connection: keep-alive expires: thu, 19 nov 1981 08:52:00 gmt cache-control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 pragma: no-cache content-encoding: gzip

the body part looks same in both cases.

any idea cause issue?

please check content-type header, since apache , nginx sending different values:

content-type: text/html; charset=utf-8

vs.

content-type: text/html; charset=utf8

update nginx config, add line:

charset utf-8;

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