Alexa Skill Server on node.js (express) using nginx as reverse proxy (https)

Question

i am running a nginx on my Debian 8.5 64bit which is used as reverse proxy for my node applications. Each request walks through my reverse proxy before getting routed to the special apps. Therefor i am using this config:

upstream socket_nodes {
  server 127.0.0.1:3000;
  server myUrl.com:3000;
  server MY.ROOTSERVER.IP.ADDRESS:3000;
}
server {
  listen 80 default_server;
  listen [::]:80 default_server;
  server_name myUrl.com;
  return 301 https://$server_name$request_uri;
}

server {
  # SSL configuration
  #
  listen 443 ssl default_server;
  listen [::]:443 ssl default_server;
  include snippets/ssl-my-website.com.conf;
  include snippets/ssl-params.conf; 

  # Self signed certs generated by the ssl-cert package
  # Don't use them in a production server!
  #
  # include snippets/snakeoil.conf;

  # Add index.php to the list if you are using PHP
  index index.html index.htm index.nginx-debian.html;

  server_name www.myWebsite.com;
  root /root/webserver/app/;
    location ~ /.well-known {
            allow all;
    }
  location / {
     proxy_pass http://localhost:8080;
         proxy_http_version 1.1;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection 'upgrade';
         proxy_set_header Host $host;
         proxy_cache_bypass $http_upgrade;
  }
    location /alexa-api/ {
     proxy_pass http://localhost:3000;
  }
  location /at_backend/ {
    proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_http_version 1.1;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
        proxy_pass http://socket_nodes;
  }


  # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
  #
  #location ~ \.php$ {
  # include snippets/fastcgi-php.conf;
  #
  # # With php5-cgi alone:
  # fastcgi_pass 127.0.0.1:9000;
  # # With php5-fpm:
  # fastcgi_pass unix:/var/run/php5-fpm.sock;
  #}

  # deny access to .htaccess files, if Apache's document root
  # concurs with nginx's one
  #
  #location ~ /\.ht {
  # deny all;
  #}
}

Sadly this is not working. I can reach my website via https (https://www.myWebsite.com) and it works fine.

So i changed the endpoint of my alexa skill in the Amazon Developer Console to: https://www.myWebsite.com/alexa-api (with and without trailing /) but it is not working. The skill server itself worked when i used it locally and made it available via ngrok. What am i doing wrong here?

edit:

There is also a socket.io server running in the same app which can be accessed from the internet (the server loggs "new client connected") - but i can not emit any events between them. The HTTP Status Code of the socket.io connection is (correctly) 101 Switching Protocols.

Greetings

Can you ping through from Nginx machine to alexa skill server — Larry.He
– Larry.He, Commented Mar 22, 2018 at 4:25
@Larry.He the nginx and the alexa skill server run on the same system. And a client which connects to the socket.io server (which is the same app) is logged — messerbill
– messerbill, Commented Mar 22, 2018 at 8:17
Maybe you ignored /alexa-api, use http://localhost:3000/alexa-api to access the alexa skill server directly — Larry.He
– Larry.He, Commented Mar 22, 2018 at 9:05
@Larry.He are you talking about the upstream socket_nodes block? — messerbill
– messerbill, Commented Mar 22, 2018 at 16:41
@Larry.He if i add /alexa-api to the socket_nodes it becomes "invalid" — messerbill
– messerbill, Commented Mar 22, 2018 at 20:17

Simon Novak · Accepted Answer · 2018-04-05 11:36:58Z

0

When you have a HTTPS you should also pass https scheme

proxy_pass https://socket_nodes;

answered Apr 5, 2018 at 11:36

Simon Novak

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