Why is the port not passed?

Question

Django

Hello. There is an Nginx configuration

upstream web {
    server web:8083;
}
upstream project {
    server web_project:8088;
}
upstream daphne {
    server daphne:8001;
}
server {

    listen 80;



    location /ws/ {
        try_files $uri @proxy_to_ws;
    }

    location /api/v1/project/ {
        try_files $uri @proxy_to_project;
    }

    location / {
        try_files $uri @proxy_to_web;
    }

    location @proxy_to_ws {
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_redirect off;
        proxy_pass   http://daphne;
    }

    location @proxy_to_web {
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
        proxy_redirect off;
        proxy_pass http://web;

    }

    location @proxy_to_project {
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
        proxy_redirect off;
        proxy_pass http://project;

    }


    location /media {
        alias /web/server-static/;
    }
    location /static {
        alias /web/static/;
    }


}

When a request is sent and the request contains the Host web.com:8000 header, for some reason, only web.com is displayed in the application without a port. Tell me, please, can I somehow make it so that the port is also transmitted? Thank you!