Re: 回复：Re:_回复：Re:_回复：Re:_Issue_about_nginx_removing_the_header_"Connection"_in_HTTP_response?

[Aleksandar Lazic]

Hi Liu Peng.

We still don't know your nginx version nor your config!

Cite from below:
> So now the standard Questions from me:
> What's the output of nginx -V ?
> What's your config?

regards
aleks

Am 07-03-2017 02:37, schrieb tjlp at sina.com:
> Hi, Alexks,
> 
> I try your proposal and it doesn't work. Actually my issue is the same 
> as this one 
> http://stackoverflow.com/questions/5100971/nginx-and-proxy-pass-send-connection-close-headers.
> 
> 1. I add "keeplive_request 0". The result is that the "Connection: 
> close" header is sent to client for every response. That does not match 
> my requirement. Our application decides whether to finish the 
> application session using this header.
> 
> 2. I add "proxy_pass_header Connection". Nginx keeps sending  
> "Connection: keep-alive" header to client even the header is 
> "Connection: close" from upstream server.
> 
> Seems Nginx has some special handling for the Connection header in 
> response. The openresty author suggests that the only way for changing 
> response header change the nginx C code for this issue. See this issue: 
> https://github.com/openresty/headers-more-nginx-module/issues/22#issuecomment-31585052.
> 
> Thanks
> Liu Peng
> 
> ----- 原始邮件 -----
> 发件人：Aleksandar Lazic <al-nginx at none.at>
> 收件人：tjlp at sina.com
> 抄送人：nginx <nginx at nginx.org>
> 主题：Re:_回复：Re:_回复：Re:_Issue_about_nginx_removing_the_header_"Connection"_in_HTTP_response?
> 日期：2017年03月04日 17点22分
> 
> Hi Liu Peng.
> Am 04-03-2017 09:12, schrieb tjlp at sina.com:
>> 
>> Hi, Alexks,
>> 
>> I don't want to hide the header.
>> My problem is that Nginx change the "Connection: close" header in the
>> reponse from upstream server to "Connction: keep-alive" and send to
>> client. I want to keep the original "Connection: close" header.
> Ah that's a clear question.
> It took us only 3 rounds to get to this clear question ;-)
> So now the standard Questions from me:
> What's the output of nginx -V ?
> What's your config?
> Maybe you have set 'keepalive' in the upstream config
> http://nginx.org/en/docs/http/ngx_http_upstream_module.html#keepalive
> or
> 'proxy_http_version 1.1;'
> http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_http_version
> as a last resort you can just pass the header with
> 'proxy_pass_header Connection;'.
> http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_pass_header
> Choose the solution which fit's to your demand.
> I can only guess due to the fact that we don't know your config.
> May I ask you to take a look into this document, which exists in 
> several
> languages, thank you very much.
> http://www.catb.org/~esr/faqs/smart-questions.html
> Best regards
> Aleks
>> Thanks
>> Liu Peng
>> 
>> ----- 原始邮件 -----
>> 发件人：Aleksandar Lazic <al-nginx at none.at>
>> 收件人：tjlp at sina.com
>> 抄送人：nginx <nginx at nginx.org>
>> 主题：Re:_回复：Re:_Issue_about_nginx_removing_the_header_"Connection"_in_HTTP_response?
>> 日期：2017年03月03日 16点19分
>> Hi.
>> 
>> then one directive upward.
>> 
>> http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_hide_header
>> 
>> Cheers
>> 
>> aleks
>> 
>> Am 03-03-2017 06:00, schrieb tjlp at sina.com:
>> 
>>> Hi,
>>> 
>>> What I mention is the header in response from backend server. Your
>>> answer about proxy_set_header is the "Connection" header in request.
>>> 
>>> Thanks
>>> Liu Peng
>>> 
>>> ----- 原始邮件 -----
>>> 发件人：Aleksandar Lazic <al-nginx at none.at>
>>> 收件人：nginx at nginx.org
>>> 抄送人：tjlp at sina.com
>>> 主题：Re: Issue about nginx removing the header "Connection" in HTTP
>>> response?
>>> 日期：2017年03月03日 06点25分
>>> 
>>> Hi.
>>> Am 01-03-2017 08:29, schrieb tjlp at sina.com:
>>>> Hi, nginx guy,
>>>> 
>>>> In our system, for some special requests, the upstream server will
>>>> return a response which the header includes "Connection: Close".
>>>> According to HTTP protocol, "Connection" is one-hop header.
>>>> So, nginx will remove this header and the client can't do the
>>>> business
>>>> logic correctly.
>>>> 
>>>> How to handle this scenario?
>>> you mean something like this?
>>> http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_set_header
>>> If the value of a header field is an empty string then this field 
>>> will
>>> not be passed to a proxied server:
>>> proxy_set_header Connection "";
>>>> Thanks
>>>> Liu Peng
>>>> _______________________________________________
>>>> nginx mailing list
>>>> nginx at nginx.org
>>>> http://mailman.nginx.org/mailman/listinfo/nginx