Update docs

docs/src/includes/_globals.md

@@ -2459,8 +2459,9 @@ The callback signature is nil on_data(string response, string error)
 
 #### [UdpServer](#UdpServer) udp_listen(string host, int port, function cb)
 
-Start an UDP server on specified address and run callback when data arrives. Return a string from the callback to reply. Requires unsafe mode.
-The server will be closed once the handle is released.
+Start an UDP server on specified address and run callback when data arrives. Set port to 0 to use a random ephemeral port. Return a string from the callback to reply.
+The server will be closed lazily by garbage collection once the handle is released, or immediately by calling close(). Requires unsafe mode.
+<br/>The callback signature is optional<string> on_message(string msg, string src)
 
 ### udp_send
 

docs/src/includes/_types.md

@@ -1057,6 +1057,11 @@ tuple<[Vec2](#Vec2), [Vec2](#Vec2), [Vec2](#Vec2)> | [split()](https://git
 
 Type | Name | Description
 ---- | ---- | -----------
+nil | [close()](https://github.com/spelunky-fyi/overlunky/search?l=Lua&q=close) | Closes the server.
+bool | [open()](https://github.com/spelunky-fyi/overlunky/search?l=Lua&q=open) | Returns true if the port was opened successfully and the server hasn't been closed yet.
+string | [error()](https://github.com/spelunky-fyi/overlunky/search?l=Lua&q=error) | Returns a string explaining the last error, at least if open() returned false.
+string | [host](https://github.com/spelunky-fyi/overlunky/search?l=Lua&q=host) | 
+int | [port](https://github.com/spelunky-fyi/overlunky/search?l=Lua&q=port) | 
 
 ### Vec2
 

src/game_api/script/usertypes/socket_lua.cpp

@@ -18,6 +18,7 @@ void register_usertypes(sol::state& lua)
     /// Start an UDP server on specified address and run callback when data arrives. Set port to 0 to use a random ephemeral port. Return a string from the callback to reply.
     /// The server will be closed lazily by garbage collection once the handle is released, or immediately by calling close(). Requires unsafe mode.
     /// <br/>The callback signature is optional<string> on_message(string msg, string src)
+    // lua["udp_listen"] = [](std::string host, in_port_t port, sol::function cb) -> UdpServer*
     lua["udp_listen"] = [](std::string host, in_port_t port, sol::function cb)
     {
         return std::unique_ptr<UdpServer>{new UdpServer(std::move(host), std::move(port), make_safe_cb<UdpServer::SocketCb>(std::move(cb)))};