http_sub_module, need help

nbubingo nbubingo at
Fri Jan 9 13:20:17 MSK 2009

Forgive my poor english, I mean the request header may let backend 
server compressed the response first. Then nginx can't  substitute  
string in the compressed response.


Date:2009-01-09 17:09:52
Subject:Re: http_sub_module, need help

If I am reading you correctly, this might be more appropriately doable with
the proxy_redirect directive of the proxy module instead.  Check out the
documentation here and give iit a try:

On Thu, Jan 8, 2009 at 11:03 PM, nbubingo <nbubingo at> wrote:

> The http_sub_filter_module can substitue one string to another.
> Sometimes it dosen't work because of gzip. If the HTTP packets come from
> backend and the client's HTTP request header comes with
> "Content-Encoding:gzip", then the entire packets is compressed.
> Maybe you can set like this: "proxy_set_header Accept-Encoding '';" , but
> any response will not compressed any more.
> ------------------
> YaoWeibin
> 2009-01-09
> -------------------------------------------------------------
> 发件人:raptium
> 发送日期:2009-01-09 13:52:15
> 收件人:nginx
> 抄送:
> 主题:http_sub_module, need help
> I am using nginx as a reverse proxy for IBM Lotus Domino Web Mail.
> Since there are some internal only URL in email content, I need
> http_sub_module to modify(add some prefix ) the URL so that user
> outside intranet can click the link and access through another portal.
> I add
>   sub_filter aaa bbb;
>   sub_filter_types application/json application/x-javascript;
>   sub_filter_once off;
> into the nginx.conf and it does not work.'aaa' is not replaced by 'bbb'
> However, if I save the web page as html file or generate some json
> which contains 'aaa'. It can be replace by 'bbb'.
> Therefore, it there any other options besides `Content-Type` can
> prevent http_sub_module replacing the word?
> Sorry for my bad English...

More information about the nginx mailing list