Fix update failing when IPv6 available

Use a new subdomain ipv4.cosinegaming.com, which contains the same IP
but only IPv4, so that godot will not try to use IPv6, which it cannot
do (it fails Error #2).

See https://github.com/godotengine/godot/issues/18275 for details on
that godot bug.

scenes/update.tscn

@@ -30,6 +30,7 @@ use_threads = false
 body_size_limit = -1
 max_redirects = 8
 script = ExtResource( 1 )
+domain = "http://ipv4.cosinegaming.com"
 
 [node name="ProgressBar" type="ProgressBar" parent="." index="1"]
 

scripts/update.gd

@@ -3,11 +3,12 @@ extends HTTPRequest
 var is_update_payload = false
 var save_to
 var time = 0
+export var domain = "http://ipv4.cosinegaming.com"
 
 func _ready():
 	connect("request_completed", self, "_request_completed")
 	# Check if we need an update
-	request("https://www.cosinegaming.com/static/vanagloria/version.json", [], false)
+	request(domain + "/static/vanagloria/version.json", [], false)
 	set_process(true)
 
 func _request_completed(result, response_code, headers, body):
@@ -27,7 +28,7 @@ func _request_completed(result, response_code, headers, body):
 			save_to = server.save_location
 			use_threads = true
 			print("Need to update! Downloading " + server.download_path)
-			request(server.download_path)
+			request(domain + server.download_path)
 	else:
 		print("Update recieved. Saving to " + save_to)
 		var file = File.new()
@@ -39,7 +40,9 @@ func _request_completed(result, response_code, headers, body):
 func _process(delta):
 	time += delta
 	var fake_progress = 1 - (0.8 / time)
-	get_node("../ProgressBar").value = 100*fake_progress
+	# var progress = get_downloaded_bytes() / get_body_size()
+	var progress = fake_progress
+	get_node("../ProgressBar").value = 100*progress
 
 func restart():
 	# Pass on args to new instance, then quit