# HTTP Keepalive @Maxim Dounin **URL:** \ **Category:** NGINX\ **Created:** [July 11, 2011, 11:07pm UTC](https://www.ruby-forum.com/t/http-keepalive-maxim-dounin/209327 "2011-07-11T23:07:06Z")\ **Posts on this page:** 7\ **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:** [July 11, 2011, 11:07pm UTC](https://www.ruby-forum.com/t/http-keepalive-maxim-dounin/209327/1 "2011-07-11T23:07:06Z")
Today I read through the code of the [http://mdounin.ru/hg/ngx\_http\_upstream\_keepalive/](http://mdounin.ru/hg/ngx_http_upstream_keepalive/) Although my understanding of nginx internals is limited, I did C programming back in my youth. From my understanding of the code there is very little modification needed in order to add HTTP (backend HTTP/1.1) keep alive. As I see it to complete this the protocol has to be updated to the version of 1.1 and the “Connection: keep-alive” header needs to be added to responses, this would add very basic keep alive support to nginx I would beleive (please do correct me if I am wrong) To make the modifications howeaver it would be necessary to edit the nginx source (or make a new http backend plugin, which could be mostly copy and paste) – I would be more specific on this matter but [nginx.org](http://nginx.org) is down currently and im not able to get the latest version of the source to look at. Would it be possible for someone with a knowledge of nginx internals to take a look at this and tell me if I am going about this the correct way? I am going to fiddle a bit and see if I can produce a plugin once [nginx.org](http://nginx.org) comes back up. ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [July 12, 2011, 4:00am UTC](https://www.ruby-forum.com/t/http-keepalive-maxim-dounin/209327/2 "2011-07-12T04:00:31Z")
Hi, Maxim! On Tue, Jul 12, 2011 at 5:50 AM, Maxim D. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > The fun starts somewhere near “the protocol has to be updated to > the version of 1.1”. My current diff is something like “7 files > changed, 688 insertions(+), 29 deletions(-)” and still growing. So…if I read it correctly, you’re already actively working on the HTTP 1.1 protocol support for ngx\_http\_proxy\_module? I’m asking because I’ve been planning to do this in August. If you’re already on it, then there’s no need to duplicate the efforts on my side and I can work on something else 😉 Thanks! -agentzh ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [July 12, 2011, 4:41am UTC](https://www.ruby-forum.com/t/http-keepalive-maxim-dounin/209327/3 "2011-07-12T04:41:52Z")
Your working on 1.1 support? Yay for me not needing to work on it. I was going to give it an attempt but judging by the number of inserts I probably would have failed. ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [July 12, 2011, 5:49am UTC](https://www.ruby-forum.com/t/http-keepalive-maxim-dounin/209327/4 "2011-07-12T05:49:09Z")
Hi Maxim, Are you developing the HTTP/1.1 proxy module? Great news. I’m just collecting your old patch and developing a new patch for backend keepalive([https://github.com/yaoweibin/nginx\_upstream\_keepalive\_patch](https://github.com/yaoweibin/nginx_upstream_keepalive_patch) ). I don’t know if there is any serious problem. My Test Set is too small. If you find any problem, shoot me. Thanks. 2011/7/12 Maxim D. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [July 11, 2011, 11:50pm UTC](https://www.ruby-forum.com/t/http-keepalive-maxim-dounin/209327/5 "2011-07-11T23:50:58Z")
Hello! On Tue, Jul 12, 2011 at 07:06:23AM +1000, SplitIce wrote: > beleive (please do correct me if I am wrong) > 🙂 The fun starts somewhere near “the protocol has to be updated to the version of 1.1”. My current diff is something like “7 files changed, 688 insertions(+), 29 deletions(-)” and still growing. > To make the modifications howeaver it would be necessary to edit the nginx > source (or make a new http backend plugin, which could be mostly copy and > paste) – I would be more specific on this matter but [nginx.org](http://nginx.org) is down > currently and im not able to get the latest version of the source to look > at. > > Would it be possible for someone with a knowledge of nginx internals to take > a look at this and tell me if I am going about this the correct way? I am > going to fiddle a bit and see if I can produce a plugin once [nginx.org](http://nginx.org) comes > back up. [nginx.org](http://nginx.org) looks perfectly up from here (and [isup.me](http://isup.me) says the same), probably it’s just you. Maxim D. ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [July 13, 2011, 4:18am UTC](https://www.ruby-forum.com/t/http-keepalive-maxim-dounin/209327/6 "2011-07-13T04:18:42Z")
Looking foward to seeing it. When its ready for testing feel free to post it in the nginx group and Ill happily help out 🙂 2011/7/12 Maxim D. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [July 12, 2011, 11:24am UTC](https://www.ruby-forum.com/t/http-keepalive-maxim-dounin/209327/7 "2011-07-12T11:24:54Z")
Hello! On Tue, Jul 12, 2011 at 09:59:38AM +0800, agentzh wrote: > HTTP 1.1 protocol support for ngx\_http\_proxy\_module? I’m asking > Yes. Maxim D.