Godot HTTPEventSource for SSE

What is this?

This is a GDScript implementation of the of EventSource Web API available in Browsers and JavaScript for reading Server Sent Event Streams (SSE). This implementation comes with exhaustive docs that you can view inside the Godot Editor by pressing F1 It completely implements the Spec, including Last-Event-ID and retry timeouts.

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How to use

First add this plugin to your godot project into the res://addons/http_event_source folder.

Then you can use the HTTPEventSource class, very similar to how you would use the EventSource in JavaScript, except that you need to regularly call the HTTPEventSource.poll() method to update the event stream.

To see how it fully works, its best to view the in-editor docs but here's a little example script on how to use it:

extends Node

var http_event_source: HTTPEventSource

func _ready() -> void:
	http_event_source = HTTPEventSource.new()
	http_event_source.connect_to_url("http://127.0.0.1:8080/test-sse")
	http_event_source.event.connect(func(ev: ServerSentEvent):
		print("-- TYPE --")
		print(ev.type)
		print("-- DATA --")
		print(ev.data)
		print("--      --\n")
	)

func _process(delta: float) -> void:
	http_event_source.poll()

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Non-Standard extensions

This plugin also has non-standard extensions to the specs, namely alternative HTTP-methods (e.g. POST), request bodies and HTTP-headers.

To see how to use them, visit the docs from inside the Godot Editor

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Support

Please support me on Ko-fi if this helps you with your project.
And always remember to include the MIT LICENSE information when releasing your game to the public.