extends RefCounted
class_name GurtProtocol
const DNS_API_URL = "http://localhost:8080"
static func is_gurt_domain(url: String) -> bool:
if url.begins_with("gurt://"):
return true
if not url.contains("://"):
var parts = url.split(".")
return parts.size() == 2
return false
static func parse_gurt_domain(url: String) -> Dictionary:
var domain_part = url
if url.begins_with("gurt://"):
domain_part = url.substr(7)
if domain_part.contains(":") or domain_part.begins_with("127.0.0.1") or domain_part.begins_with("localhost") or is_ip_address(domain_part):
return {
"direct_address": domain_part,
"display_url": domain_part,
"is_direct": true
}
var parts = domain_part.split(".")
if parts.size() != 2:
return {}
return {
"name": parts[0],
"tld": parts[1],
"display_url": domain_part,
"is_direct": false
}
static func is_ip_address(address: String) -> bool:
var parts = address.split(".")
if parts.size() != 4:
return false
for part in parts:
if not part.is_valid_int():
return false
var num = part.to_int()
if num < 0 or num > 255:
return false
return true
static func fetch_domain_info(name: String, tld: String) -> Dictionary:
var http_request = HTTPRequest.new()
var tree = Engine.get_main_loop()
tree.current_scene.add_child(http_request)
http_request.timeout = 5.0
var url = DNS_API_URL + "/domain/" + name + "/" + tld
print("DNS API URL: ", url)
var error = http_request.request(url)
if error != OK:
print("HTTP request failed with error: ", error)
http_request.queue_free()
return {"error": "Failed to make DNS request"}
var response = await http_request.request_completed
http_request.queue_free()
if response[1] == 0 and response[3].size() == 0:
return {"error": "DNS server is not responding"}
var http_code = response[1]
var body = response[3]
if http_code != 200:
return {"error": "Domain not found or not approved"}
var json = JSON.new()
var parse_result = json.parse(body.get_string_from_utf8())
if parse_result != OK:
return {"error": "Invalid JSON response from DNS server"}
return json.data
static func fetch_content_via_gurt(ip: String, path: String = "/") -> Dictionary:
var client = GurtProtocolClient.new()
if not client.create_client(30):
return {"error": "Failed to create GURT client"}
var gurt_url = "gurt://" + ip + ":4878" + path
var response = client.request(gurt_url, {"method": "GET"})
client.disconnect()
if not response:
return {"error": "No response from GURT server"}
if not response.is_success:
var error_msg = "Server returned status " + str(response.status_code) + ": " + response.status_message
return {"error": error_msg}
var content = response.body
return {"content": content, "headers": response.headers}
static func fetch_content_via_gurt_direct(address: String, path: String = "/") -> Dictionary:
var shared_result = {"finished": false}
var thread = Thread.new()
var mutex = Mutex.new()
var thread_func = func():
var local_result = {}
var client = GurtProtocolClient.new()
if not client.create_client(10):
local_result = {"error": "Failed to create GURT client"}
else:
var gurt_url: String
if address.contains(":"):
gurt_url = "gurt://" + address + path
else:
gurt_url = "gurt://" + address + ":4878" + path
var response = client.request(gurt_url, {"method": "GET"})
client.disconnect()
if not response:
local_result = {"error": "No response from GURT server"}
else:
var content = response.body
if not response.is_success:
var error_msg = "Server returned status " + str(response.status_code) + ": " + response.status_message
local_result = {"error": error_msg, "content": content, "headers": response.headers}
else:
local_result = {"content": content, "headers": response.headers}
mutex.lock()
shared_result.clear()
for key in local_result:
shared_result[key] = local_result[key]
shared_result["finished"] = true
mutex.unlock()
thread.start(thread_func)
var finished = false
while not finished:
await Engine.get_main_loop().process_frame
OS.delay_msec(10)
mutex.lock()
finished = shared_result.get("finished", false)
mutex.unlock()
thread.wait_to_finish()
mutex.lock()
var final_result = {}
for key in shared_result:
if key != "finished":
final_result[key] = shared_result[key]
mutex.unlock()
return final_result
static func handle_gurt_domain(url: String) -> Dictionary:
var parsed = parse_gurt_domain(url)
if parsed.is_empty():
return {"error": "Invalid domain format. Use: domain.tld or IP:port", "html": create_error_page("Invalid domain format. Use: domain.tld or IP:port")}
var target_address: String
var path = "/"
if parsed.get("is_direct", false):
target_address = parsed.direct_address
else:
var domain_info = await fetch_domain_info(parsed.name, parsed.tld)
if domain_info.has("error"):
return {"error": domain_info.error, "html": create_error_page(domain_info.error)}
target_address = domain_info.ip
var content_result = await fetch_content_via_gurt_direct(target_address, path)
if content_result.has("error"):
var error_msg = "Failed to fetch content from " + target_address + " via GURT protocol - " + content_result.error
if content_result.has("content") and not content_result.content.is_empty():
return {"html": content_result.content, "display_url": parsed.display_url}
return {"error": error_msg, "html": create_error_page(error_msg)}
if not content_result.has("content"):
var error_msg = "No content received from " + target_address
return {"error": error_msg, "html": create_error_page(error_msg)}
var html_content = content_result.content
if html_content.is_empty():
var error_msg = "Empty content received from " + target_address
return {"error": error_msg, "html": create_error_page(error_msg)}
return {"html": html_content, "display_url": parsed.display_url}
static func get_error_type(error_message: String) -> Dictionary:
if "DNS server is not responding" in error_message or "Domain not found" in error_message:
return {"code": "ERR_NAME_NOT_RESOLVED", "title": "This site can't be reached", "icon": "🌐"}
elif "timeout" in error_message.to_lower() or "timed out" in error_message.to_lower():
return {"code": "ERR_CONNECTION_TIMED_OUT", "title": "This site can't be reached", "icon": "⏰"}
elif "Failed to fetch" in error_message or "No response" in error_message:
return {"code": "ERR_CONNECTION_REFUSED", "title": "This site can't be reached", "icon": "🚫"}
elif "Invalid domain format" in error_message:
return {"code": "ERR_INVALID_URL", "title": "This page isn't working", "icon": "⚠️"}
else:
return {"code": "ERR_UNKNOWN", "title": "Something went wrong", "icon": "❌"}
static func create_error_page(error_message: String) -> String:
var error_info = get_error_type(error_message)
return """
""" + error_info.title + """ - GURT