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Re: (52) Empty reply from server

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Valentin V. Bartenev
April 26, 2016 08:54AM
On Tuesday 26 April 2016 16:52:22 Pankaj Chaudhary wrote:
> Hi Francis,
>
> thank you for your input!
>
> I have requirement to create own cookie based on input and wirte the that
> cookie in header.
> whenever i need that i can read from header and use it.
>
>
> for example:-
>
> I have created my own cookie "thissomevalue" worte in header and later the
> same read from header.
>

You shouldn't do that (I believe even in Apache) because it's an expensive
operation in comparison to just storing the value in local variable.


> Please check my code and let me know why i am not able to read the value
> from header.

Because you write your value in one structure, but try to find it in another.

>
> Below code snippet to set header value in request header:-
>
> ngx_table_elt_t *cookie;
> cookie = ngx_list_push(&r->headers_in.headers);

Here you have inserted your value into header list (r->headers_in.headers).


> cookie->lowcase_key = (u_char*) "cookie";
> ngx_str_set(&cookie->key, "Cookie");
> ngx_str_set(&cookie->value, "somevalue");
> cookie->hash = ngx_crc32_long(cookie->lowcase_key, cookie->key.len);
>
>
> Below code snippet to read set value from header:-
>
> ngx_http_core_main_conf_t *clcf;
> ngx_str_t *type;
> ngx_uint_t key;
> ngx_str_t val = ngx_string("cookie");
> clcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
> key= ngx_hash_key_lc(val.data, val.len);
> type = ngx_hash_find(&clcf->headers_in_hash, key, val.data, val.len);
>

Here you are trying to find your value in the static input headers hash
(clcf->headers_in_hash), that is created in ngx_http_init_headers_in_hash()
on configuration stage.

wbr, Valentin V. Bartenev

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Subject Author Posted

(52) Empty reply from server

Pankaj Chaudhary April 14, 2016 06:06AM

Re: (52) Empty reply from server

Francis Daly April 14, 2016 12:56PM

Re: (52) Empty reply from server

pankajitbhu April 14, 2016 02:08PM

Re: (52) Empty reply from server

Francis Daly April 14, 2016 05:14PM

Re: (52) Empty reply from server

pankajitbhu April 15, 2016 03:50AM

Re: (52) Empty reply from server

pankajitbhu April 18, 2016 06:56AM

Re: (52) Empty reply from server

Francis Daly April 18, 2016 07:36PM

Re: (52) Empty reply from server

pankajitbhu April 19, 2016 06:22AM

Re: (52) Empty reply from server

Francis Daly April 19, 2016 01:44PM

Re: (52) Empty reply from server

pankajitbhu April 20, 2016 03:26AM

Re: (52) Empty reply from server

Francis Daly April 20, 2016 03:40PM

Re: (52) Empty reply from server

pankajitbhu April 21, 2016 03:36AM

Re: (52) Empty reply from server

Francis Daly April 22, 2016 02:54PM

Re: (52) Empty reply from server

pankajitbhu April 26, 2016 07:24AM

Re: (52) Empty reply from server

Valentin V. Bartenev April 26, 2016 08:54AM

Re: (52) Empty reply from server

pankajitbhu April 27, 2016 03:58AM

Re: (52) Empty reply from server

Valentin V. Bartenev April 27, 2016 11:40AM

Re: (52) Empty reply from server

pankajitbhu April 27, 2016 12:22PM

Re: (52) Empty reply from server

Valentin V. Bartenev May 04, 2016 09:48AM

Re: (52) Empty reply from server

pankajitbhu May 05, 2016 01:00AM

Re: (52) Empty reply from server

Valentin V. Bartenev May 05, 2016 10:04AM

Re: (52) Empty reply from server

pankajitbhu May 09, 2016 05:06AM

Re: (52) Empty reply from server

Francis Daly May 10, 2016 04:48PM

Re: (52) Empty reply from server

pankajitbhu May 11, 2016 02:50AM

Re: (52) Empty reply from server

Francis Daly April 28, 2016 03:12AM

Re: (52) Empty reply from server Attachments

pankajitbhu May 02, 2016 03:14AM



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