The request URL with the port, But response the next url without the port

[rikeitou-0191632]

Request URL: http://xxx.xxx.xxx.xxx:81/aaa

Response content: 
{
  "next": "http://xxx.xxx.xxx.xxx/aaa",
  "previous": "http://xxx.xxx.xxx.xxx/aaa",
  "current": "http://xxx.xxx.xxx.xxx/aaa"
}

Nginx

upstream django_server {
    server django:8001;
}

server {
    listen       81;
    location /aaa {
         proxy_pass http://django_server;
         ...
    }

[lovelydinosaur]

To debug this you'd need to dig into Django's request.build_absolute_uri() and figure out what's going wrong. Possibly some misconfiguration.

I'd start by trying some debugging like...

print(request.build_absolute_uri("/redirect"))   # Check if build_redirect_uri is including the port or not.
print(request.get_host())  # Show what host:port is being used for the absolute URIs.
print(request.META)  # Show the raw WSGI input to the request, which could help us dig out any misconfiguration issues.

Relevant bits of Django source code...

• Http.build_absolute_uri()
• Http.get_host()

[rikeitou-0191632]

Thank you very much.

The setting of Nginx is wrong.

upstream django_server {
    server django:8001;
}

server {
    listen       81;
    location /aaa {
         proxy_pass http://django_server;
         proxy_set_header Host $http_host;  ← modified here. $host to $http_host
         ...
    }