The Service you wish your Client to connect to lives in a particular JavaScript context or 'endpoint'. thread.js has support follw the following endpoints out of the box:

• Worker
• <iframe>
• MessagePort (inc. SharedWorker, MessageChannel)
• BroadcastChannel
• Window

It's up to you to point your Client in the direction it's Service can be found. You can do this in two ways:

A. Endpoint per client

var endpoint = document.querySelector('iframe');
client('my-service', endpoint);

B. Global default endpoint

client.prototype.endpoint = document.querySelector('iframe');

client('my-service-1');
client('my-service-2');
client('my-service-3');

Custom endpoints

var customEndpoint = {
  postMessage(data, transfer) { ... }
  addListener(callback) { ... }
  removeListener(callback) { ... }
}

client('my-service', customEndpoint);

var customEndpoint = {
  postMessage(data, transfer) { ... }
  addListener(callback) { ... }
  removeListener(callback) { ... }
}

service('my-service')
  .method('myMethod', ...)
  .listen(customEndpoint);