# How to write a module to process http response message body? **URL:** \ **Category:** NGINX\ **Created:** [April 15, 2011, 7:28am UTC](https://www.ruby-forum.com/t/how-to-write-a-module-to-process-http-response-message-body/205768 "2011-04-15T07:28:40Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![luislavena](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/0ea827/32.png) [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Post date:** [April 15, 2011, 7:28am UTC](https://www.ruby-forum.com/t/how-to-write-a-module-to-process-http-response-message-body/205768/1 "2011-04-15T07:28:40Z")
I am a nginx development novice.Now i need to process the http response message body.For example , get all numbers in the response html,then every number times two and use new number instead of the original number. Do I need to write a new http module or use the existing module? Which existing module can I imitate?Which function should i foucs on ? Posted at Nginx Forum: > **[How to write a module to process http response message body?](https://forum.nginx.org/read.php?2,191422,191422#msg-191422)** > > I am a nginx development novice.Now i need to process the http response message body.For example , get all numbers in the response html,then every number times two and use new number instead of the original number. Do I need to write a new http... ---
**Author:** ![xinghua\_hi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/x/67e7ee/32.png) [@xinghua\_hi](https://www.ruby-forum.com/u/xinghua_hi)\ **Post date:** [April 15, 2011, 10:54am UTC](https://www.ruby-forum.com/t/how-to-write-a-module-to-process-http-response-message-body/205768/2 "2011-04-15T10:54:27Z")
What about to use the substitutions module( [http://wiki.nginx.org/NginxHttpSubsModule](http://wiki.nginx.org/NginxHttpSubsModule))? You will not get very good performance I think. 2011/4/15 xinghua\_hi [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)