Ryfujk

I have asked a related question but has solved it already.

Using nginx provided a reverse proxy.

The config file is taking from project document, I paste it below.

Current situation is:

The backend service is working on port 8080. And the front end is working on port 9001.

$ netstat -anp |grep 8080

(Not all processes could be identified, non-owned process info

 will not be shown, you would have to be root to see it all.)

tcp6       0      0 :::8080                 :::*                    LISTEN      26707/java



$ netstat -anp |grep 9001

(Not all processes could be identified, non-owned process info

 will not be shown, you would have to be root to see it all.)

tcp        0      0 127.0.0.1:9001          0.0.0.0:*               LISTEN      12130/grunt

I can visit the localhost:9001 on machine A where the service is running.
While visits from any other machine in the same LAN. It shows the error page. If go with Inspect, there is a message in the error page.

Cannot open document for: /eplmp-server-rest/api/auth/providers from http://192.168.1.164:8989/

192.168.1.164 is the machine A's IP address.
/eplmp-server-rest/api/* should be the endpoint serve by the backend service.

The XHR Network Headers from machine A.

General

Request URL: http://localhost:8080/eplmp-server-rest/api/auth/providers

Request Method: GET

Status Code: 200 OK

Remote Address: [::1]:8080

Referrer Policy: no-referrer-when-downgrade



Requst Headers

Provisional headers are shown

Accept: application/json, text/javascript, */*; q=0.01

Origin: http://localhost:9001

Referer: http://localhost:9001/

User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36

from another machine in the same LAN

Request URL: http://localhost:8080/eplmp-server-rest/api/auth/providers

Referrer Policy: no-referrer-when-downgrade



Provisional headers are shown

Accept: application/json, text/javascript, /; q=0.01

Origin: http://192.168.1.164:8989

Referer: http://192.168.1.164:8989/

User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36

The related nginx config file.

# Simple http proxy

server {

    listen 8989;

    server_name localhost;  



    # Static grunt server

    location / {

        # Use grunt server (require grunt serve command)

        proxy_pass  http://localhost:9001;



        # OR serve static files directly :

        # charset utf-8;

        # root /path/to/docdoku-web-front/dist;

        # expires 0d;

        # access_log off;

    }



    # Webservices REST

    location /api {

        proxy_pass  http://localhost:8080;

    }    



    # Websocket application

    location /ws {

        proxy_pass http://localhost:8080/ws;

        proxy_http_version 1.1;

        proxy_set_header Upgrade $http_upgrade;

        proxy_set_header Connection "upgrade";  

        proxy_read_timeout 7200s;

    }

}