What is the correct format to get Django Header value when Header name contain `_` underscore

Question

My CURL command:-

curl -X POST \
  http://localhost:8000/sendData/ \
  -H 'authorization: Token b67d31c42d98b3c97b28c737629dca63ef5043fc' \
  -H 'cache-control: no-cache' \
  -H 'client_cdata: virat' \
  -H 'clientdata: sachin' \
  -H 'content-type: multipart/form-data;' \
  -H 'postman-token: ed70d17c-ecf6-66c7-619e-85eac7d62803' \
  -F purchasID=23124212 \
  -F purchaserAmount=4320'

I tried to get Header Data

using request.META['HTTP_CLIENTDATA']

I got the value sachin same as when i try to get request.META['HTTP_CLIENT_CDATA'] it not working, It's showing the *** KeyError error.

What is the correct format to get Header value when header name contain _?

I can't change header data, Because of this API is called by another domain(It result provided by another site or server), I'm creating API end points.

Thanks in advance.

It looks like your curl has a missing `'` at `content-type`. — erip, May 29 '18 at 13:21
Thanks, Do you have any idea how can I access `request.META['HTTP_CLIENT_CDATA']` this — Mr Singh, May 29 '18 at 13:23
This is 3rd party response data, i checked on `META` `HTTP_CLIENT_CDATA` not presents. — Mr Singh, May 29 '18 at 13:25
i can't find the docs but simple you can not use `_` in the headers just replace it to the `-` and you will can get value by `self.request.META.get('HTTP_CLIENT_CDATA')` — Brown Bear, May 29 '18 at 14:22
here the help [http-headers-naming-conventions](https://stackoverflow.com/questions/3561381/custom-http-headers-naming-conventions) — Brown Bear, May 29 '18 at 14:38
change the `client_cdata`header to `client-cdata`(change underscore to hyphen). And in django get it with `self.request.META.get('HTTP_CLIENT_CDATA')` — tayyab_fareed, May 30 '18 at 10:28
I can't change that, Because of this API is called by another domain(It result provided by another site or server), I'm creating API end points. — Mr Singh, May 30 '18 at 10:34

score 0 · Answer 1 · answered May 31 '18 at 09:23

0

Working on the assumption that you're probably using either Nginx or Apache as a reverse proxy, headers containing underscores are dropped by these servers to avoid problems when mapping such headers to CGI variables.

If you need to support underscores - which it sounds as though you do, because they're coming from a third party - then you have to enable support.

For Nginx (link)

underscores_in_headers on;

For Apache (link)

SetEnvIfNoCase ^client.cdata$ ^(.*)$ fix_client_cdata=$1
RequestHeader set client-cdata %{fix_client_cdata}e env=fix_client_cdata

answered May 31 '18 at 09:23

Will Keeling

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@deependra-singh did this help to resolve your problem? – Will Keeling Jun 11 '18 at 08:04
I'm not using Apache or Nginx anymore. – Mr Singh Jun 12 '18 at 10:17

What is the correct format to get Django Header value when Header name contain `_` underscore

1 Answers1