Fwd: manipulation request headers before proxy_pass

[Yuexiang Zhang]

---------- Forwarded message ----------

Hi James,

Headers of request is read-only in nginx-clojure , but we can use nginx variable & proxy_set_header to add/remove/update headers before sending them to the remote upstream/host. e.g

set $my_header_value "";

location /testheader {

      handler_type 'java';

      rewrite_handler_name 'test.MyRewriteHandler';

      proxy_set_header x-testHeadr $my_header_value;

      proxy_pass some-upstream-or-host;

}

in the MyRewriteHandler source, we can do 

((NginxJavaRequest)req).setVariable("my_header_value", "test");

If the value is empty string the header will not be passed to the remote server.

Regards.

Xfeep

On Fri, Dec 19, 2014 at 8:02 PM,  james  wrote:

Hi Xfeep,

 i have a small query regarding the header manipulation .

I tried something like 

((JavaLazyHeaderMap) request.get(Constants.HEADERS)).put("x-testHeadr", "test");

to add a few header values from the rewrite handler.

conf file:

  handler_type 'java';

 rewrite_handler_name

from java i implemented  NginxJavaRingHandler

I was getting an error saying

2014-12-19 05:10:15[error]:put request header  not supported now!

java.lang.UnsupportedOperationException: put request header  not supported now!

at nginx.clojure.java.JavaLazyHeaderMap.put(JavaLazyHeaderMap.java:238)

Is there an alternative way of adding or manipulating the headers before sending them to proxy pass.

Thanks you.

Regards,

 James

[SVJ]

whats the difference between

NginxClojureRT.setNGXVariable(((NginxJavaRequest) request).nativeRequest(), "myvar", "NGINX_VAR1");

and

((NginxJavaRequest) request).setVariable("myvar", "NGINX_VAR1"); 

??

[Yuexiang Zhang]

Hi, 

They get  same result.

Regards.

Xfeep

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