299049 - Mozilla Plug-In API Proposal: Enable plugins to add Headers for GET Requests

Status: RESOLVED WONTFIX

(Core Graveyard :: Plug-ins, enhancement, P5)

Description

[Edwin Wong]

User-Agent:       Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en) AppleWebKit/412 (KHTML, like Gecko) Safari/412
Build Identifier: Mozilla/5.0

The NPAPI currently allows adding HTTP headers to a POST request, by prepending them to the POST 
body in NPN_PostURL and NPN_PostURLNotify. We would like for plugins to be able to add HTTP 
headers to GET requests as well.

We propose:
 NPError NPN_GetURLNotifyHeaders
 (
   NPP instance,
   const char* url,
   const char* target,
   void* notifyData,
   const char* headers
 );


 /* Identical to NPN_GetURLNotify, except for the new parameter 'headers',
  * which specifies additional request headers. These are separated by \n
  * characters (NOT \r\n), and terminated by \n\0 (NOT \n\n\0). The browser
  * appends these headers to the request verbatim, inserting them after the
  * headers automatically generated by the browser. The browser does NOT
  * attempt to detect conflicts between its own headers and those specified
  * by the plugin; if the plugin specifies headers that overlap with browser
  * headers, the conflicting headers will simply be sent verbatim. *

Reproducible: Always

Steps to Reproduce:
1. Enhancement request. Allow Plugins to add header to GET request
2.
3.

Actual Results:  
Currently unable to add headers from GET 

Expected Results:  
Should be able too

Comment 1

[Jeff Mott]

Submitted to plugin futures last year.  See
http://wiki.mozilla.org/uploads/PluginFutures/request-headers.html

Comment 2

[BMO Automation]

Resolving as wont fix, plugin support deprecated in Firefox 85.