<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Title" content="">
<meta name="Keywords" content="">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:Calibri;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal;
font-family:Calibri;
color:windowtext;}
span.EmailStyle18
{mso-style-type:personal;
font-family:Calibri;
color:windowtext;}
span.EmailStyle19
{mso-style-type:personal;
font-family:Calibri;
color:windowtext;}
span.EmailStyle20
{mso-style-type:personal;
font-family:Calibri;
color:windowtext;}
span.EmailStyle21
{mso-style-type:personal-reply;
font-family:Calibri;
color:windowtext;}
span.msoIns
{mso-style-type:export-only;
mso-style-name:"";
text-decoration:underline;
color:teal;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style>
</head>
<body bgcolor="white" lang="EN-US" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt">Hi,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I have the following three directives:</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">location = /hello {</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> hello_world;</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> hola_mundo on;</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> bonjour_monde on;</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">}</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">hello_world is an nginx handler module that provides content “hello world”</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">hola_mundo and bonjour_monde are filters that add to the chain strings “hola mundo” and “bonjour monde” respectively.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Here is the output:</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">curl "http://localhost:8090/hello"</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">hello worldhola mundobonjour monde</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Switching the filter directives in location block has no impact on output string.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">For eg: </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">location = /hello {</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> hello_world;</span><o:p></o:p></p>
<p class="MsoNormal" style="text-indent:.5in"><span style="font-size:11.0pt">bonjour_monde on;</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> hola_mundo on;</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">}</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Here is the output:</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">curl "http://localhost:8090/hello"</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">hello worldhola mundobonjour monde</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">How do I control the order of execution of filters?</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I already looked at objs/ngx_modules.c and auto/modules. My custom handlers and filters are not listed there.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">One thing that I observed is that the order of listing the load_module modules/*.so in conf/nginx.conf does impact the order of execution of the filters.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Is there any other trick to adjust the execution order within the location block?</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">--</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Gopal</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
</body>
</html>