CLI cannot connect to internal docker hosts with hostname

[madflow]

• I have an application and a faraday server running in a docker compose setup.
• The hostname of the faraday server is "faraday".
• When running the authentication in the application, the cli yiels "Invalid url".

EXCEPTION of type 'Exception' occurred with message: Invalid url: http://faraday:5985

• I would expect http://faraday:5985 to also work (hostname), since this is pretty common use case.

[ezk06eer]

@madflow,
Please share your docker compose, is there any entrypoint to it?
How are you managing the name resolution, did you configure /etc/hosts nginx or any reverse proxy?
Are you trying to connect from outside of the docker of runing a command inside of the container?
Did you setup networks in the docker-compose?

Cheers!

[aenima-x]

This is generated because of the lib used to validate url

>>> from validators import url
>>> url('http://faraday:5985')
ValidationFailure(func=url, args={'value': 'http://faraday:5985', 'public': False})

A work around for this is use the '.local' TLD used for local networks that is valid

>>> url('http://faraday.local:5985')
True
>>>

[madflow]

Consider this a "Feature request" ;).

• This is about the internal hostname communication between containers in a Docker Compose setup.
• I am already using the workaround with a .local domain.

Working with workaround:

services:
  reconftw:
    build: build
    volumes:
      - ./output/:/reconftw/Recon/
      - ./reconftw.cfg:/reconftw/reconftw.cfg
    environment:
      FARADAY_SERVER: http://faraday.local:5985
      FARADAY_USER: faraday
      FARADAY_PASS: XXX
    depends_on:
      - faraday
  db:
    image: postgres:12.7-alpine
    restart: always
    container_name: faraday_db
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres
      - POSTGRES_DB=faraday
    ports:
      - '5432'
    volumes:
      - "db:/var/lib/postgresql/data:rw"
  redis:
    image: 'redis:6.2-alpine'
    container_name: faraday_redis
    ports:
      - '6379'
  faraday:
    image: index.docker.io/faradaysec/faraday
    container_name: faraday_app
    entrypoint: "/entrypoint.sh"
    volumes:
     - "$HOME/.faraday:/home/faraday/.faraday:rw"
    environment:
      - PGSQL_USER=postgres
      - PGSQL_PASSWD=postgres
      - PGSQL_HOST=db
      - PGSQL_DBNAME=faraday
      - REDIS_SERVER=redis
    depends_on:
     - db
     - redis
    ports:
     - "5985:5985"
    networks:
      default:
        aliases:
          - faraday
          - faraday.local
volumes:
  db:
    driver: local

Not working:

services:
  reconftw:
    build: build
    volumes:
      - ./output/:/reconftw/Recon/
      - ./reconftw.cfg:/reconftw/reconftw.cfg
    environment:
      FARADAY_SERVER: http://faraday:5985
      FARADAY_USER: faraday
      FARADAY_PASS: XXX
    depends_on:
      - faraday
  db:
    image: postgres:12.7-alpine
    restart: always
    container_name: faraday_db
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres
      - POSTGRES_DB=faraday
    ports:
      - '5432'
    volumes:
      - "db:/var/lib/postgresql/data:rw"
  redis:
    image: 'redis:6.2-alpine'
    container_name: faraday_redis
    ports:
      - '6379'
  faraday:
    image: index.docker.io/faradaysec/faraday
    container_name: faraday_app
    entrypoint: "/entrypoint.sh"
    volumes:
     - "$HOME/.faraday:/home/faraday/.faraday:rw"
    environment:
      - PGSQL_USER=postgres
      - PGSQL_PASSWD=postgres
      - PGSQL_HOST=db
      - PGSQL_DBNAME=faraday
      - REDIS_SERVER=redis
    depends_on:
     - db
     - redis
    ports:
     - "5985:5985"
volumes:
  db:
    driver: local