non-local API server connection refused when using '-config'

[bjornbyte]

When running toxiproxy server on a remote host with -config and trying to use toxiproxy-cli against it with the --host flag it gets connect: connection refused error.

The content of my config file is

[
  {
    "name": "registry",
    "listen": "[::]:5001",
    "upstream": "10.12.80.149:21146",
    "enabled": true
  }
]

After running with and without the config file, I eventually noticed that when running without, the toxiproxy server log for starting the API server looks like this:

{"level":"info","host":"0.0.0.0","port":"8474","version":"2.5.0","caller":"api.go:119","time":"2023-06-20T19:59:52Z","message":"Starting HTTP server on endpoint 0.0.0.0:8474"}
but when running with config it looks like this
{"level":"info","host":"localhost","port":"8474","version":"2.5.0","caller":"api.go:119","time":"2023-06-20T19:59:52Z","message":"Starting HTTP server on endpoint localhost:8474"}
with "localhost" rather than "0.0.0.0" and since I'm running toxiproxy-cli with --host http://<host_ip>:8474 (i.e. the host is an IP and not localhost) it refuses the connection.

I'm able to work around it by explicitly running the server with -host 0.0.0.0, but find it odd that the listen host would be different depending on if a config is used or not (actually, I suspect the act of creating proxies before the API server starts is what actually impacts it, based on a quick read of the code).

[cgoguyer]

Hi,I have the same issue with docker.
As @bjornbyte said, it works when adding -host 0.0.0.0!

[denisko]

I have found that the following setup creates a working setup in a docker-compose file:

toxiproxy:
    image: ghcr.io/shopify/toxiproxy
    container_name: toxiproxy
    command: ["-host=0.0.0.0", "-config=/data/toxiproxy.json"]
    entrypoint: "/toxiproxy"
    volumes:
      - ./docker/toxiproxy/toxiproxy.json:/data/toxiproxy.json
    ports:
      - "8474:8474"

The reason is that if you add only the -config parameter in the command, it overrides the -host parameter this is set in the docker image. With docker inspect you can see these default settings in the docker image:

...
"Config" : {
    ...
    "Cmd" : [ "-host=0.0.0.0" ],
    "Domainname" : "",
    "Entrypoint" : [ "/toxiproxy" ],
    "Env" : [ "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", "LOG_LEVEL=info" ],
    "ExposedPorts" : {
      "8474/tcp" : { }
    },
...