Add function to get server info.

clientmods/preview/init.lua

@@ -8,6 +8,11 @@ end)
 
 core.register_on_connect(function()
 	print("[PREVIEW] Player connection completed")
+	local server_info = core.get_server_info()
+	print("Server version: " .. server_info.protocol_version)
+	print("Server ip: " .. server_info.ip)
+	print("Server address: " .. server_info.address)
+	print("Server port: " .. server_info.port)
 end)
 
 core.register_on_placenode(function(pointed_thing, node)
@@ -80,7 +85,6 @@ core.after(2, function()
 	print("[PREVIEW] loaded " .. modname .. " mod")
 	modstorage:set_string("current_mod", modname)
 	print(modstorage:get_string("current_mod"))
-	print("Server version:" .. core.get_protocol_version())
 	preview_minimap()
 end)
 

doc/client_lua_api.md

@@ -702,11 +702,10 @@ Call these functions only at load time!
 * `minetest.disconnect()`
     * Disconnect from the server and exit to main menu.
     * Returns `false` if the client is already disconnecting otherwise returns `true`.
-* `minetest.get_protocol_version()`
-    * Returns the protocol version of the server.
-    * Might not be accurate at start up as the client might not be connected to the server yet, in that case it will return 0.
 * `minetest.take_screenshot()`
     * Take a screenshot.
+* `minetest.get_server_info()`
+    * Returns [server info](#server-info).
 
 ### Misc.
 * `minetest.parse_json(string[, nullvalue])`: returns something
@@ -935,6 +934,15 @@ Can be obtained via `minetest.get_meta(pos)`.
         func = function(param),        -- Called when command is run.
                                        -- Returns boolean success and text output.
     }
+### Server info
+```lua
+{
+	address = "minetest.example.org", -- The domain name/IP address of a remote server or "" for a local server.
+	ip = "203.0.113.156",             -- The IP address of the server.
+	port = 30000,                     -- The port the client is connected to.
+	protocol_version = 30             -- Will not be accurate at start up as the client might not be connected to the server yet, in that case it will be 0.
+}
+```
 
 Escape sequences
 ----------------

src/client.cpp

@@ -58,6 +58,7 @@ Client::Client(
 		IrrlichtDevice *device,
 		const char *playername,
 		const std::string &password,
+		const std::string &address_name,
 		MapDrawControl &control,
 		IWritableTextureSource *tsrc,
 		IWritableShaderSource *shsrc,
@@ -89,6 +90,7 @@ Client::Client(
 	),
 	m_particle_manager(&m_env),
 	m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, ipv6, this),
+	m_address_name(address_name),
 	m_device(device),
 	m_camera(NULL),
 	m_minimap_disabled_by_server(false),
@@ -253,13 +255,11 @@ Client::~Client()
 	delete m_minimap;
 }
 
-void Client::connect(Address address,
-		const std::string &address_name,
-		bool is_local_server)
+void Client::connect(Address address, bool is_local_server)
 {
 	DSTACK(FUNCTION_NAME);
 
-	initLocalMapSaving(address, address_name, is_local_server);
+	initLocalMapSaving(address, m_address_name, is_local_server);
 
 	m_con.SetTimeoutMs(0);
 	m_con.Connect(address);

src/client.h

@@ -257,6 +257,7 @@ public:
 			IrrlichtDevice *device,
 			const char *playername,
 			const std::string &password,
+			const std::string &address_name,
 			MapDrawControl &control,
 			IWritableTextureSource *tsrc,
 			IWritableShaderSource *shsrc,
@@ -284,9 +285,7 @@ public:
 		The name of the local player should already be set when
 		calling this, as it is sent in the initialization.
 	*/
-	void connect(Address address,
-			const std::string &address_name,
-			bool is_local_server);
+	void connect(Address address, bool is_local_server);
 
 	/*
 		Stuff that references the environment is valid only as
@@ -525,6 +524,16 @@ public:
 
 	IrrlichtDevice *getDevice() const { return m_device; }
 
+	const Address getServerAddress()
+	{
+		return m_con.GetPeerAddress(PEER_ID_SERVER);
+	}
+
+	const std::string &getAddressName() const
+	{
+		return m_address_name;
+	}
+
 private:
 
 	// Virtual methods from con::PeerHandler
@@ -576,6 +585,7 @@ private:
 	ClientEnvironment m_env;
 	ParticleManager m_particle_manager;
 	con::Connection m_con;
+	std::string m_address_name;
 	IrrlichtDevice *m_device;
 	Camera *m_camera;
 	Minimap *m_minimap;

src/game.cpp

@@ -2044,7 +2044,7 @@ bool Game::connectToServer(const std::string &playername,
 	}
 
 	client = new Client(device,
-			playername.c_str(), password,
+			playername.c_str(), password, *address,
 			*draw_control, texture_src, shader_src,
 			itemdef_manager, nodedef_manager, sound, eventmgr,
 			connect_address.isIPv6(), &flags);
@@ -2056,7 +2056,7 @@ bool Game::connectToServer(const std::string &playername,
 	connect_address.print(&infostream);
 	infostream << std::endl;
 
-	client->connect(connect_address, *address,
+	client->connect(connect_address,
 		simple_singleplayer_mode || local_server_mode);
 
 	/*

src/script/lua_api/l_client.cpp

@@ -234,10 +234,20 @@ int ModApiClient::l_sound_stop(lua_State *L)
 	return 0;
 }
 
-// get_protocol_version()
-int ModApiClient::l_get_protocol_version(lua_State *L)
+// get_server_info()
+int ModApiClient::l_get_server_info(lua_State *L)
 {
-	lua_pushinteger(L, getClient(L)->getProtoVersion());
+	Client *client = getClient(L);
+	Address serverAddress = client->getServerAddress();
+	lua_newtable(L);
+	lua_pushstring(L, client->getAddressName().c_str());
+	lua_setfield(L, -2, "address");
+	lua_pushstring(L, serverAddress.serializeString().c_str());
+	lua_setfield(L, -2, "ip");
+	lua_pushinteger(L, serverAddress.getPort());
+	lua_setfield(L, -2, "port");
+	lua_pushinteger(L, client->getProtoVersion());
+	lua_setfield(L, -2, "protocol_version");
 	return 1;
 }
 
@@ -265,6 +275,6 @@ void ModApiClient::Initialize(lua_State *L, int top)
 	API_FCT(get_meta);
 	API_FCT(sound_play);
 	API_FCT(sound_stop);
-	API_FCT(get_protocol_version);
+	API_FCT(get_server_info);
 	API_FCT(take_screenshot);
 }

src/script/lua_api/l_client.h

@@ -69,8 +69,8 @@ private:
 
 	static int l_sound_stop(lua_State *L);
 
-	// get_protocol_version()
-	static int l_get_protocol_version(lua_State *L);
+	// get_server_info()
+	static int l_get_server_info(lua_State *L);
 
 	static int l_take_screenshot(lua_State *L);