POST result: 404

[MarcoI]

This is the nginx configuration in Ubuntu 18.04 :

    server {
        listen 443 ssl http2 default_server;
        server_name ggc.world;

        ssl_certificate /etc/letsencrypt/live/ggc.world/fullchain.pem; #
managed by Certbot
        ssl_certificate_key /etc/letsencrypt/live/ggc.world/privkey.pem; #
managed by Certbot

        ssl_trusted_certificate /etc/letsencrypt/live/ggc.world/chain.pem;

        ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

        ssl_session_timeout 5m;
        #ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3;
        ssl_protocols TLSv1.2 TLSv1.3;
        ssl_ciphers EECDH+CHACHA20:EECDH+CHACHA20-  
   
draft:EECDH+AES128:RSA+AES128:EECDH+AES256:RSA+AES256:EECDH+3DES:RSA+3DES:!MD5;
        ssl_prefer_server_ciphers on;
        ssl_session_cache shared:SSL:50m;
        #ssl_stapling on;
        #ssl_stapling_verify on;

        access_log /var/log/nginx/ggcworld-access.log combined;

        add_header Strict-Transport-Security "max-age=31536000";
        location = /favicon.ico { access_log off; log_not_found off; }

        location / {
            proxy_pass http://127.0.0.1:8080;
            #proxy_pass http://127.0.0.1:2000;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            #proxy_set_header Host $host;
        }
    }

    server {
        listen 80 default_server;
        listen [::]:80 default_server;
        error_page 497 https://$host:$server_port$request_uri;
        server_name ggc.world;
        return 301 https://$server_name$request_uri;

        access_log /var/log/nginx/ggcworld-access.log combined;

        add_header Strict-Transport-Security "max-age=31536000";
        location = /favicon.ico { access_log off; log_not_found off; }

        location / {
            proxy_pass http://127.0.0.1:8080;
            #proxy_pass http://127.0.0.1:2000;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            #proxy_set_header Host $host;
        }
    }

    upstream websocket {
        ip_hash;
        server localhost:3000;
    }

    server {
        listen 81;
        server_name ggc.world;

        #location / {
        location ~ ^/(websocket|websocket\/socket-io) {
            proxy_pass http://127.0.0.1:4201;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_set_header X-Forwared-For $remote_addr;
            proxy_set_header Host $host;

            proxy_redirect off;
            proxy_set_header X-Real-IP $remote_addr;
        }
    }

    upstream golang-webserver {
        ip_hash;
        server 127.0.0.1:2000;
    }

    server {
        listen 3000;
        server_name ggc.world;

        location / {
            proxy_pass http://golang-webserver;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            #proxy_set_header Host $host;
        }
    }

This is my vue.config.js file for the vue.js frontend:

    // vue.config.js
    module.exports = {
      // options...
      publicPath: '',
      devServer: {
        host: '0.0.0.0',
        port: 8080,
        //port: 2000,
        public: 'ggc.world'
      },
    }

And this is port configuration for go-webserver :

server-gorillamux.go :

    const (
            CONN_HOST = "192.168.1.7"
            CONN_PORT = "2000"
    )


Compiling the frontend:

     DONE  Compiled successfully in 1224ms                                  
        7:55:19 PM

      App running at:
      - Local:   http://localhost:8080 
      - Network: http://ggc.world/

      Note that the development build is not optimized.
      To create a production build, run npm run build.

And running the go-webserver:

    goServer$ go run server-gorillamux.go


I get this error: POST https://ggc.world/puser/add 404

These are the last lines of the nano /var/log/nginx/ggcworld-access.log file
:

    36.119.16 - - [30/Apr/2020:19:56:57 +0200] "GET / HTTP/2.0" 200 694 "-"
"Mozilla/5.0 (X11; Linux x86_64)  
    AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.129
Safari/537.36"
    2.36.119.16 - - [30/Apr/2020:19:56:57 +0200] "GET /js/app.js HTTP/2.0"
200 147353 "https://ggc.world/" "Mozilla/5.0 
    (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko)
Chrome/81.0.4044.129 Safari/537.36"
    2.36.119.16 - - [30/Apr/2020:19:56:58 +0200] "GET /js/chunk-vendors.js
HTTP/2.0" 200 4241853 "https://ggc.world/" 
    "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko)
Chrome/81.0.4044.129 Safa$
    2.36.119.16 - - [30/Apr/2020:19:56:58 +0200] "GET
/sockjs-node/info?t=1588269418560 HTTP/2.0" 200 79 
    "https://ggc.world/" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36
(KHTML, like Gecko) Chrome/81.0.4044.$
    2.36.119.16 - - [30/Apr/2020:19:57:21 +0200] "POST /puser/add HTTP/2.0"
404 137 "https://ggc.world/" "Mozilla/5.0 
    (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko)
Chrome/81.0.4044.129 Safari/537.36"

How can I solve the problem?
Looking forward to your kind help.
Marco

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,287914,287914#msg-287914