CODEWITHSUNDEEP
dockerdocker-compose
kaytrance
kaytrance

Reputation: 2757

Making an API call from dockerized web page to back-end server ends up with net::ERR_CONNECTION_REFUSED

I have 2 containers running:

Why cannot I make a GET request for /search so that this request is handled by back-end?

I always get net::ERR_CONNECTION_REFUSED in browser's console even if I have linked them.

Here's my config:

services:
   backend:
      image: docker.xxxxx.net/yyyyyy/zzzzzzzz:latest
      expose:
         - "8080"
      ports:
         - "8333:8080"

   frontend:
      build:
         dockerfile: Dockerfile
         context: .
      depends_on:
         - "backend"
      links:
         -  backend
      ports:
         - "80:80"
      volumes:
         - ./build:/usr/share/nginx/html

Important note that launching just back-end on another server allows me make API calls (the only problem that arises then is CORS), so the back-end code is ok and the problem must be in wrong docker configuration.

I can clearly open front-end, but I cannot make any API calls: I have tried a lot of things like to make a calls to:

The result is the same. What can be wrong?

Upvotes: 2

Views: 1933

Answers (3)

YYY
YYY

Reputation: 6341

I am assuming GET request is made from your browser, i.e, from the host NOT from the frontend container. As per your config, 8080 is exposed from backend container to the frontend container and port 8333 is exposed to the docker host. Hence http://backend:8080 is visible only from within frontend container but not from the host machine. So it might have to be http://<docker_ip>:8333/search?q=test to get the response from backend container.

Upvotes: 2

Gabbax0r
Gabbax0r

Reputation: 1826

handle your CORS error with nginx.

configure in your nginx.conf a reverse proxy.

server {
    listen 80 default_server;
    server_name _;

      location /search {
       proxy_pass http://backend:8080;
    }
...
}

this (or similar) should solve your net::ERR_CONNECTION_REFUSED permission error

Upvotes: 0

xitter
xitter

Reputation: 768

Try communicating to source docker via environment variables provided by docker. See this

Upvotes: 0

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