[GitHub] [apisix] kaktos commented on issue #6078: request help: Use plugin redirect for http_to_https,the browser access unlimited 301.

[GitBox <gi...@apache.org>]

kaktos commented on issue #6078:
URL: https://github.com/apache/apisix/issues/6078#issuecomment-1011772963


   Maybe I encountered the  same problem. The reason I found is that our APISIX behind a proxy that responsed for decrypted the TLS and proxied always HTTP scheme to APISIX. let's see the redirect plugin code:
   ```lua
   if conf.http_to_https and ctx.var.scheme == "http" then
   -- ignore
   end
   ```
   It will makes the redirect loop apparently. 
   
   the resolution is patching this plugin just like:
   ```lua
   local proxy_proto = core.request.header(ctx, "x-forwarded-proto")
   local _scheme = proxy_proto and proxy_proto or ctx.var.scheme
   if conf.http_to_https and _scheme == "http" then
   -- ignore
   end
   ```
   


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