Thanks Igor feedback.  I will test right now. <br><br>just now,  I made a mistaken: it should be "the field is deleted when the pacekt pass through NGINX"<br>--------------------------------------------------------------------<br>
root# ./nginx -V<br>nginx: nginx version: nginx/1.0.5<br>nginx: built by gcc 4.3.2 (Debian 4.3.2-1.1) <br>nginx: configure arguments: --prefix=/var/log/nginx --with-cc-opt='-D NGX_UPSTREAM_KEEPALIVE_PATCHED' --add-module=/root/keep_alive --with-debug<br>
---------------------------------------------------------------------<br>I have other question:  <br>       Can NGINX forward the original HTTP header directly when it works as reverse proxy?   <br>       In sometimes, some non-standard field in HTTP header is deleted by NGINX, however, we need the field pass through NGINX. <br>
<br>thanks <br>George<br><br><br><br><div class="gmail_quote">On Tue, Aug 23, 2011 at 8:07 PM, Igor Sysoev <span dir="ltr"><<a href="mailto:igor@sysoev.ru">igor@sysoev.ru</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div><div></div><div class="h5">On Tue, Aug 23, 2011 at 07:02:04PM +0800, nexthop wrote:<br>
> Hi all:<br>
><br>
> I met a stranger problem. a field of "x-ws.ajax: delta=true" is added after<br>
> NGINX.<br>
><br>
> 1) Topology<br>
>      client   ---------[NGINX] -----------------------[IIS 6.0] server<br>
>                         ^___Act as reverse proxy<br>
><br>
>      NGINX( 1.0.5 and keep-alive enabled)<br>
> --------------------------------------------------------------------------------------------------<br>
> 2) Issue<br>
>     (1) We can not list a directory from IIS server.<br>
>     (2) If we bypass NGINX, everything is good well.<br>
> --------------------------------------------------------------------------------------------------<br>
><br>
> 3) we sniff on both sides of NGINX and compare the pcap file, we found an<br>
> extra-field is added after NGIX.<br>
><br>
> ---------------------------------------------------------------Before<br>
> NGINX-------------------------------------------------------------<br>
> POST /server/WorkFlowProcess/WaittingProcessWorkFlow.aspx?_dc=1313745754796<br>
> HTTP/1.1<br>
> Connection: keep-alive<br>
> Host: <a href="http://www.abc.com" target="_blank">www.abc.com</a><br>
> Accept: */*<br>
> Accept-Language: en<br>
> x-requested-with: XMLHttpRequest<br>
> Content-Type: application/x-www-form-urlencoded; charset=UTF-8<br>
> Referer:<br>
> <a href="http://www.abc.com/server/WorkFlowProcess/WaittingProcessWorkFlow.aspx" target="_blank">http://www.abc.com/server/WorkFlowProcess/WaittingProcessWorkFlow.aspx</a><br>
> Accept-Encoding: gzip, deflate<br>
> User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)<br>
> Content-Length: 1172<br>
> Cache-Control: no-cache<br>
> Cookie: ASP.NET_SessionId=2lscnq45aaihogaw0igsoi45<br>
><br>
> ----------------------------------------------After<br>
> NGINX---------------------------------------------------------------------------------<br>
>  POST /server/WorkFlowProcess/WaittingProcessWorkFlow.aspx?_dc=1313745754796<br>
> HTTP/1.1<br>
> Accept: */*<br>
> Accept-Language: en<br>
> x-ws.ajax: delta=true<br>
>         *  <============Here, the filed is added*<br>
> x-requested-with: XMLHttpRequest<br>
> Content-Type: application/x-www-form-urlencoded; charset=UTF-8<br>
> Referer:<br>
> <a href="http://www.abc.com/server/WorkFlowProcess/WaittingProcessWorkFlow.aspx" target="_blank">http://www.abc.com/server/WorkFlowProcess/WaittingProcessWorkFlow.aspx</a><br>
> Accept-Encoding: gzip, deflate<br>
> User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)<br>
> Host: <a href="http://www.abc.com" target="_blank">www.abc.com</a><br>
> Content-Length: 1172<br>
> Connection: Keep-Alive<br>
> Cache-Control: no-cache<br>
> Cookie: ASP.NET_SessionId=2lscnq45aaihogaw0igsoi45<br>
> ============================================================================<br>
><br>
> We suspect that the extra field is not recongized by server.<br>
><br>
> My question is :<br>
> 1) what does it means? I can not find any usful information from google,<br>
> there is no such source code in nginx code tree.<br>
> 2) what does it impact on?<br>
><br>
> Appreciate your help at advice.<br>
<br>
</div></div>Could you show what does "nginx -V" show ?<br>
The stock nginx version does not add this by default.<br>
May be you have the following lines in your configuration:<br>
   proxy_set_header  x-ws.ajax          ...<br>
   proxy_set_header  x-requested-wirth  XMLHTTPRequest;<br>
<font color="#888888"><br>
<br>
--<br>
Igor Sysoev<br>
<br>
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</font></blockquote></div><br>