config.capnp

# This example defines the configuration for a simple Gopher
# (https://en.wikipedia.org/wiki/Gopher_(protocol)) client, with an optional HTTP proxy
# configuration as well.
#
# The comments in this file focus on TCP-related configuration. For details about the rest check
# out the helloworld/config.capnp file (also under the samples directory).
# Also be sure to refer to the comments in /src/workerd/server/workerd.capnp.

using Workerd = import "/workerd/workerd.capnp";

const helloWorldExample :Workerd.Config = (

  # Every workerd instance consists of a set of named services. A worker, for instance,
  # is a type of service. Here we create a single worker service and an ExternalServer which
  # defines a local proxy. The configuration details for these are defined below.
  services = [
    (name = "main", worker = .gopherWorker),
    (name = "proxy", external = .localProxy)
  ],

  sockets = [ ( name = "http", address = "*:8080", http = (), service = "main" ) ]
);

# The definition of the actual worker exposed using the "main" service.
const gopherWorker :Workerd.Worker = (
  modules = [
    (name = "worker", esModule = embed "gopher.js")
  ],
  compatibilityDate = "2022-09-26",
  compatibilityFlags = ["tcp_sockets_support"],
  # In order to access our configured proxy we need to specify it as a binding. This will allow
  # it to be accessible via `env.proxy` in the JS script.
  bindings = [
    (name = "proxy", service = "proxy")
  ]
);

# The definition of an external server which in this case is an HTTP proxy. Any connections made
# through it will be tunneled using HTTP CONNECT.
const localProxy :Workerd.ExternalServer = (
  address = "localhost:1234",
  http = (
    style = proxy
  )
);