Can not access localhost endpoint from local drone webhook plugin

Drone Support
1

I am testing plugins/webhook locally using drone exec, trying to test on the local endpoint which is running on http://localhost:5001/endpoint
drone yaml:

steps:
- name: test
  image: alpine
  commands:
  - echo hello
  - echo world
- name: send
  image: plugins/webhook
  network_mode: host
  settings:
    urls: http://localhost:5001/endpoint
    debug: true

Tried to set the network mode to host but still not working.
After using command “drone exec --trusted” i am getting error: Failed to execute the HTTP request. Post http://localhost:5001/endpoint/: dial tcp [::1]:5001: connect: connection refused. Am I missing something?

2

localhost refers to the network inside the container, so it is expected that localhost cannot be used to connect to an address outside of the container.

3

Is there any way to connect to localhost from the pipeline container?

4

This is more of a docker question than a drone question, so I would recommend checking stackoverflow. here is a thread that might be helpful nginx - From inside of a Docker container, how do I connect to the localhost of the machine? - Stack Overflow

5

With network mode set to host this really should work. Does drone properly push that from the config?

Basic test…
On host run…

$ python -m http.server
Serving HTTP on 0.0.0.0 port 8000 (http://0.0.0.0:8000/) ...

Open a new terminal and run…

$ docker run -it --network=host python bash #it includes wget...
root@d34db33f: wget localhost:8000