proxy_redirect question

[dimon-v]

apisix version: 2.9
linux : 3.10.0-1160.42.2.el7.x86_64

back-end nginx version:
Tengine version: Tengine/2.3.2
nginx version: nginx/1.17.3

The production environment has an authentication interface using wechat oAuth2.0. After using Apisix, the requested host will be overwritten. Instead of using Apisix, add 'proxy_redirect off' to ngx1 proxy_pass; 'You can reproduce the scene.

[dimon-v]

apisix route:

[juzhiyuan]

Maybe @membphis could give some tips?

[membphis]

@dimon-v you need to specify the upstream host name.

take a look at the pass_host of https://github.com/apache/apisix/blob/master/docs/en/latest/admin-api.md#upstream