From adf0020cd41f6a947ef883c582dde74d67255b1f Mon Sep 17 00:00:00 2001 From: Mattes D Date: Fri, 6 Feb 2015 18:44:05 +0100 Subject: APIDump: Added cNetwork documentation. --- MCServer/Plugins/APIDump/Classes/Network.lua | 183 +++++++++++++++++++++++++++ 1 file changed, 183 insertions(+) create mode 100644 MCServer/Plugins/APIDump/Classes/Network.lua (limited to 'MCServer/Plugins/APIDump/Classes/Network.lua') diff --git a/MCServer/Plugins/APIDump/Classes/Network.lua b/MCServer/Plugins/APIDump/Classes/Network.lua new file mode 100644 index 000000000..2f1880a52 --- /dev/null +++ b/MCServer/Plugins/APIDump/Classes/Network.lua @@ -0,0 +1,183 @@ + +-- Network.lua + +-- Defines the documentation for the cNetwork-related classes + + + + + +return +{ + cNetwork = + { + Desc = + [[ + This is the namespace for high-level network-related operations. Allows plugins to make TCP + connections to the outside world using a callback-based API.

+

+ All functions in this namespace are static, they should be called on the cNetwork class itself: +

+local Server = cNetwork:Listen(1024, ListenCallbacks);
+

+ ]], + AdditionalInfo = + { + { + Header = "Using callbacks", + Contents = + [[ + The entire Networking API is callback-based. Whenever an event happens on the network object, a + specific plugin-provided function is called. The callbacks are stored in tables which are passed + to the API functions, each table contains multiple callbacks for the various situations.

+

+ There are three different callback variants used: LinkCallbacks, LookupCallbacks and + ListenCallbacks. Each is used in the situation appropriate by its name - LinkCallbacks are used + for handling the traffic on a single network link (plus additionally creation of such link when + connecting as a client), LookupCallbacks are used when doing DNS and reverse-DNS lookups, and + ListenCallbacks are used for handling incoming connections as a server.

+

+ LinkCallbacks have the following structure:
+

+local LinkCallbacks =
+{
+	OnConnected = function ({{cTCPLink|a_TCPLink}})
+		-- The specified {{cTCPLink|link}} has succeeded in connecting to the remote server.
+		-- Only called if the link is being connected as a client (using cNetwork:Connect() )
+		-- Not used for incoming server links
+		-- All returned values are ignored
+	end,
+	
+	OnError = function ({{cTCPLink|a_TCPLink}}, a_ErrorCode, a_ErrorMsg)
+		-- The specified error has occured on the {{cTCPLink|link}}
+		-- No other callback will be called for this link from now on
+		-- For a client link being connected, this reports a connection error (destination unreachable etc.)
+		-- It is an Undefined Behavior to send data to a_TCPLink in or after this callback
+		-- All returned values are ignored
+	end,
+	
+	OnReceivedData = function ({{cTCPLink|a_TCPLink}}, a_Data)
+		-- Data has been received on the {{cTCPLink|link}}
+		-- Will get called whenever there's new data on the {{cTCPLink|link}}
+		-- a_Data contains the raw received data, as a string
+		-- All returned values are ignored
+	end,
+	
+	OnRemoteClosed = function ({{cTCPLink|a_TCPLink}})
+		-- The remote peer has closed the {{cTCPLink|link}}
+		-- The link is already closed, any data sent to it now will be lost
+		-- No other callback will be called for this link from now on
+		-- All returned values are ignored
+	end,
+}
+

+

+ LookupCallbacks have the following structure:
+

+local LookupCallbacks =
+{
+	OnError = function (a_Query, a_ErrorCode, a_ErrorMsg)
+		-- The specified error has occured while doing the lookup
+		-- a_Query is the hostname or IP being looked up
+		-- No other callback will be called for this lookup from now on
+		-- All returned values are ignored
+	end,
+
+	OnFinished = function (a_Query)
+		-- There are no more DNS records for this query
+		-- a_Query is the hostname or IP being looked up
+		-- No other callback will be called for this lookup from now on
+		-- All returned values are ignored
+	end,
+
+	OnNameResolved = function (a_Hostname, a_IP)
+		-- A DNS record has been found, the specified hostname resolves to the IP
+		-- Called for both Hostname -> IP and IP -> Hostname lookups
+		-- May be called multiple times if a hostname resolves to multiple IPs
+		-- All returned values are ignored
+	end,
+}
+

+

+ ListenCallbacks have the following structure:
+

+local ListenCallbacks =
+{
+	OnAccepted = function ({{cTCPLink|a_TCPLink}})
+		-- A new connection has been accepted and a {{cTCPLink|Link}} for it created
+		-- It is safe to send data to the link now
+		-- All returned values are ignored
+	end,
+	
+	OnError = function (a_ErrorCode, a_ErrorMsg)
+		-- The specified error has occured while trying to listen
+		-- No other callback will be called for this lookup from now on
+		-- This callback is called before the cNetwork:Listen() call returns
+		-- All returned values are ignored
+	end,
+
+	OnIncomingConnection = function (a_RemoteIP, a_RemotePort, a_LocalPort)
+		-- A new connection is being accepted, from the specified remote peer
+		-- This function needs to return either nil to drop the connection,
+		-- or valid LinkCallbacks to use for the new connection's {{cTCPLink|TCPLink}} object
+		return SomeLinkCallbacks
+	end,
+}
+

+ ]], + }, + }, -- AdditionalInfo + + Functions = + { + Connect = { Params = "Host, Port, LinkCallbacks", Return = "bool", Notes = "(STATIC) Begins establishing a (client) TCP connection to the specified host. Uses the LinkCallbacks table to report progress, success, errors and incoming data. Returns false if it fails immediately (bad port value, bad hostname format), true otherwise. Host can be either an IP address or a hostname." }, + HostnameToIP = { Params = "Host, LookupCallbacks", Return = "bool", Notes = "(STATIC) Begins a DNS lookup to find the IP address(es) for the specified host. Uses the LookupCallbacks table to report progress, success or errors. Returns false if it fails immediately (bad hostname format), true if the lookup started successfully. Host can be either a hostname or an IP address." }, + IPToHostname = { Params = "Address, LookupCallbacks", Return = "bool", Notes = "(STATIC) Begins a reverse-DNS lookup to find out the hostname for the specified IP address. Uses the LookupCallbacks table to report progress, success or errors. Returns false if it fails immediately (bad address format), true if the lookup started successfully." }, + Listen = { Params = "Port, ListenCallbacks", Return = "{{cServerHandle|ServerHandle}}", Notes = "(STATIC) Starts listening on the specified port. Uses the ListenCallbacks to report incoming connections or errors. Returns a {{cServerHandle}} object representing the server. If the listen operation failed, the OnError callback is called with the error details and the returned server handle will report IsListening() == false. The plugin needs to store the server handle object for as long as it needs the server running, if the server handle is garbage-collected by Lua, the listening socket will be closed and all current connections dropped." }, + }, + }, -- cNetwork + + cTCPLink = + { + Desc = + [[ + This class wraps a single TCP connection, that has been established. Plugins can create these by + calling {{cNetwork}}:Connect() to connect to a remote server, or by listening using + {{cNetwork}}:Listen() and accepting incoming connections. The links are callback-based - when an event + such as incoming data or remote disconnect happens on the link, a specific callback is called. See the + additional information in {{cNetwork}} documentation for details. + ]], + + Functions = + { + GetLocalIP = { Params = "", Return = "string", Notes = "Returns the IP address of the local endpoint of the TCP connection." }, + GetLocalPort = { Params = "", Return = "number", Notes = "Returns the port of the local endpoint of the TCP connection." }, + GetRemoteIP = { Params = "", Return = "string", Notes = "Returns the IP address of the remote endpoint of the TCP connection." }, + GetRemotePort = { Params = "", Return = "number", Notes = "Returns the port of the remote endpoint of the TCP connection." }, + Send = { Params = "Data", Return = "", Notes = "Sends the data (raw string) to the remote peer. The data is sent asynchronously and there is no report on the success of the send operation, other than the connection being closed or reset by the underlying OS." }, + }, + }, -- cTCPLink + + cServerHandle = + { + Desc = + [[ + This class provides an interface for TCP sockets listening for a connection. In order to listen, the + plugin needs to use the {{cNetwork}}:Listen() function to create the listening socket.

+

+ Note that when Lua garbage-collects this class, the listening socket is closed. Therefore the plugin + should keep it referenced in a global variable for as long as it wants the server running. + ]], + + Functions = + { + Close = { Params = "", Return = "", Notes = "Closes the listening socket. No more connections will be accepted, and all current connections will be closed." }, + IsListening = { Params = "", Return = "bool", Notes = "Returns true if the socket is listening." }, + }, + + }, -- cServerHandle +} + + + + -- cgit v1.2.3 From 43b68975f7a2491ee9c0702f1d2fe01d78bb8a8e Mon Sep 17 00:00:00 2001 From: Mattes D Date: Sat, 7 Feb 2015 13:30:45 +0100 Subject: APIDump: Added client and server examples. --- MCServer/Plugins/APIDump/Classes/Network.lua | 137 +++++++++++++++++++++++++++ 1 file changed, 137 insertions(+) (limited to 'MCServer/Plugins/APIDump/Classes/Network.lua') diff --git a/MCServer/Plugins/APIDump/Classes/Network.lua b/MCServer/Plugins/APIDump/Classes/Network.lua index 2f1880a52..065a743d8 100644 --- a/MCServer/Plugins/APIDump/Classes/Network.lua +++ b/MCServer/Plugins/APIDump/Classes/Network.lua @@ -126,6 +126,143 @@ local ListenCallbacks =

]], }, + + { + Header = "Example client connection", + Contents = + [[ + The following example, adapted from the NetworkTest plugin, shows a simple example of a client + connection using the cNetwork API. It connects to www.google.com on port 80 (http) and sends a http + request for the front page. It dumps the received data to the console.

+

+ First, the callbacks are defined in a table. The OnConnected() callback takes care of sending the http + request once the socket is connected. The OnReceivedData() callback sends all data to the console. The + OnError() callback logs any errors. Then, the connection is initiated using the cNetwork::Connect() API + function.

+

+

+-- Define the callbacks to use for the client connection:
+local ConnectCallbacks =
+{
+	OnConnected = function (a_Link)
+		-- Connection succeeded, send the http request:
+		a_Link:Send("GET / HTTP/1.0\r\nHost: www.google.com\r\n\r\n")
+	end,
+	
+	OnError = function (a_Link, a_ErrorCode, a_ErrorMsg)
+		-- Log the error to console:
+		LOG("An error has occurred while talking to google.com: " .. a_ErrorCode .. " (" .. a_ErrorMsg .. ")")
+	end,
+	
+	OnReceivedData = function (a_Link, a_Data)
+		-- Log the received data to console:
+		LOG("Incoming http data:\r\n" .. a_Data)
+	end,
+	
+	OnRemoteClosed = function (a_Link)
+		-- Log the event into the console:
+		LOG("Connection to www.google.com closed")
+	end,
+}
+
+-- Connect:
+if not(cNetwork:Connect("www.google.com", 80, ConnectCallbacks)) then
+	-- Highly unlikely, but better check for errors
+	LOG("Cannot queue connection to www.google.com")
+end
+-- Note that the connection is being made on the background,
+-- there's no guarantee that it's already connected at this point in code
+
+ ]], + }, + + { + Header = "Example server implementation", + Contents = + [[ + The following example, adapted from the NetworkTest plugin, shows a simple example of creating a + server listening on a TCP port using the cNetwork API. The server listens on port 9876 and for + each incoming connection it sends a welcome message and then echoes back whatever the client has + sent ("echo server").

+

+ First, the callbacks for the listening server are defined. The most important of those is the + OnIncomingConnection() callback that must return the LinkCallbacks that will be used for the new + connection. In our simple scenario each connection uses the same callbacks, so a predefined + callbacks table is returned; it is, however, possible to define different callbacks for each + connection. This allows the callbacks to be "personalised", for example by the remote IP or the + time of connection. The OnAccepted() and OnError() callbacks only log that they occurred, there's + no processing needed for them.

+

+ Finally, the cNetwork:Listen() API function is used to create the listening server. The status of + the server is checked and if it is successfully listening, it is stored in a global variable, so + that Lua doesn't garbage-collect it until we actually want the server closed.

+

+

+-- Define the callbacks used for the incoming connections:
+local EchoLinkCallbacks =
+{
+	OnConnected = function (a_Link)
+		-- This will not be called for a server connection, ever
+		assert(false, "Unexpected Connect callback call")
+	end,
+	
+	OnError = function (a_Link, a_ErrorCode, a_ErrorMsg)
+		-- Log the error to console:
+		local RemoteName = "'" .. a_Link:GetRemoteIP() .. ":" .. a_Link:GetRemotePort() .. "'"
+		LOG("An error has occurred while talking to " .. RemoteName .. ": " .. a_ErrorCode .. " (" .. a_ErrorMsg .. ")")
+	end,
+	
+	OnReceivedData = function (a_Link, a_Data)
+		-- Send the received data back to the remote peer
+		a_Link:Send(Data)
+	end,
+	
+	OnRemoteClosed = function (a_Link)
+		-- Log the event into the console:
+		local RemoteName = "'" .. a_Link:GetRemoteIP() .. ":" .. a_Link:GetRemotePort() .. "'"
+		LOG("Connection to '" .. RemoteName .. "' closed")
+	end,
+}
+
+-- Define the callbacks used by the server:
+local ListenCallbacks =
+{
+	OnAccepted = function (a_Link)
+		-- No processing needed, just log that this happened:
+		LOG("OnAccepted callback called")
+	end,
+	
+	OnError = function (a_ErrorCode, a_ErrorMsg)
+		-- An error has occured while listening for incoming connections, log it:
+		LOG("Cannot listen, error " .. a_ErrorCode .. " (" .. a_ErrorMsg .. ")"
+	end,
+
+	OnIncomingConnection = function (a_RemoteIP, a_RemotePort, a_LocalPort)
+		-- A new connection is being accepted, give it the EchoCallbacks
+		return EchoLinkCallbacks
+	end,
+}
+
+-- Start the server:
+local Server = cNetwork:Listen(9876, ListenCallbacks)
+if not(Server:IsListening()) then
+	-- The error has been already printed in the OnError() callbacks
+	-- Just bail out
+	return;
+end
+
+-- Store the server globally, so that it stays open:
+g_Server = Server
+
+...
+
+-- Elsewhere in the code, when terminating:
+-- Close the server and let it be garbage-collected:
+g_Server:Close()
+g_Server = nil
+
+ ]], + }, }, -- AdditionalInfo Functions = -- cgit v1.2.3 From 16636ff6e2bff3658e0843eee9dfad440771b62f Mon Sep 17 00:00:00 2001 From: Mattes D Date: Thu, 12 Feb 2015 20:05:55 +0100 Subject: LuaAPI: Added client TLS support for TCP links. --- MCServer/Plugins/APIDump/Classes/Network.lua | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'MCServer/Plugins/APIDump/Classes/Network.lua') diff --git a/MCServer/Plugins/APIDump/Classes/Network.lua b/MCServer/Plugins/APIDump/Classes/Network.lua index 065a743d8..ace6c2449 100644 --- a/MCServer/Plugins/APIDump/Classes/Network.lua +++ b/MCServer/Plugins/APIDump/Classes/Network.lua @@ -282,7 +282,15 @@ g_Server = nil calling {{cNetwork}}:Connect() to connect to a remote server, or by listening using {{cNetwork}}:Listen() and accepting incoming connections. The links are callback-based - when an event such as incoming data or remote disconnect happens on the link, a specific callback is called. See the - additional information in {{cNetwork}} documentation for details. + additional information in {{cNetwork}} documentation for details.

+

+ The link can also optionally perform TLS encryption. Plugins can use the StartTLSClient() function to + start the TLS handshake as the client side. Since that call, the OnReceivedData() callback is + overridden internally so that the data is first routed through the TLS decryptor, and the plugin's + callback is only called for the decrypted data, once it starts arriving. The Send function changes its + behavior so that the data written by the plugin is first encrypted and only then sent over the + network. Note that calling Send() before the TLS handshake finishes is supported, but the data is + queued internally and only sent once the TLS handshake is completed. ]], Functions = @@ -292,6 +300,7 @@ g_Server = nil GetRemoteIP = { Params = "", Return = "string", Notes = "Returns the IP address of the remote endpoint of the TCP connection." }, GetRemotePort = { Params = "", Return = "number", Notes = "Returns the port of the remote endpoint of the TCP connection." }, Send = { Params = "Data", Return = "", Notes = "Sends the data (raw string) to the remote peer. The data is sent asynchronously and there is no report on the success of the send operation, other than the connection being closed or reset by the underlying OS." }, + StartTLSClient = { Params = "OwnCert, OwnPrivateKey, OwnPrivateKeyPassword", Return = "", Notes = "Starts a TLS handshake on the link, as a client side of the TLS. The Own___ parameters specify the client certificate and its corresponding private key and password; all three parameters are optional and no client certificate is presented to the remote peer if they are not used or all empty. Once the TLS handshake is started by this call, all incoming data is first decrypted before being sent to the OnReceivedData callback, and all outgoing data is queued until the TLS handshake completes, and then sent encrypted over the link." }, }, }, -- cTCPLink -- cgit v1.2.3 From b8bf795dd1701a32075950a6ea98a16eacb9edc9 Mon Sep 17 00:00:00 2001 From: Mattes D Date: Fri, 13 Feb 2015 18:31:54 +0100 Subject: Exported cTCPLink:Close and :Shutdown() to Lua API. --- MCServer/Plugins/APIDump/Classes/Network.lua | 2 ++ 1 file changed, 2 insertions(+) (limited to 'MCServer/Plugins/APIDump/Classes/Network.lua') diff --git a/MCServer/Plugins/APIDump/Classes/Network.lua b/MCServer/Plugins/APIDump/Classes/Network.lua index ace6c2449..1dc0f3ae7 100644 --- a/MCServer/Plugins/APIDump/Classes/Network.lua +++ b/MCServer/Plugins/APIDump/Classes/Network.lua @@ -295,11 +295,13 @@ g_Server = nil Functions = { + Close = { Params = "", Return = "", Notes = "Closes the link forcefully (TCP RST). There's no guarantee that the last sent data is even being delivered. See also the Shutdown() method." }, GetLocalIP = { Params = "", Return = "string", Notes = "Returns the IP address of the local endpoint of the TCP connection." }, GetLocalPort = { Params = "", Return = "number", Notes = "Returns the port of the local endpoint of the TCP connection." }, GetRemoteIP = { Params = "", Return = "string", Notes = "Returns the IP address of the remote endpoint of the TCP connection." }, GetRemotePort = { Params = "", Return = "number", Notes = "Returns the port of the remote endpoint of the TCP connection." }, Send = { Params = "Data", Return = "", Notes = "Sends the data (raw string) to the remote peer. The data is sent asynchronously and there is no report on the success of the send operation, other than the connection being closed or reset by the underlying OS." }, + Shutdown = { Params = "", Return = "", Notes = "Shuts the socket down for sending data. Notifies the remote peer that there will be no more data coming from us (TCP FIN). The data that is in flight will still be delivered. The underlying socket will be closed when the remote end shuts down as well, or after a timeout." }, StartTLSClient = { Params = "OwnCert, OwnPrivateKey, OwnPrivateKeyPassword", Return = "", Notes = "Starts a TLS handshake on the link, as a client side of the TLS. The Own___ parameters specify the client certificate and its corresponding private key and password; all three parameters are optional and no client certificate is presented to the remote peer if they are not used or all empty. Once the TLS handshake is started by this call, all incoming data is first decrypted before being sent to the OnReceivedData callback, and all outgoing data is queued until the TLS handshake completes, and then sent encrypted over the link." }, }, }, -- cTCPLink -- cgit v1.2.3 From 557adf3be944b8a91c768ee85241b7c8bc57c0a6 Mon Sep 17 00:00:00 2001 From: Mattes D Date: Fri, 13 Feb 2015 23:18:22 +0100 Subject: Exported TLS server start on cTCPLink to Lua API. --- MCServer/Plugins/APIDump/Classes/Network.lua | 1 + 1 file changed, 1 insertion(+) (limited to 'MCServer/Plugins/APIDump/Classes/Network.lua') diff --git a/MCServer/Plugins/APIDump/Classes/Network.lua b/MCServer/Plugins/APIDump/Classes/Network.lua index 1dc0f3ae7..274c8d035 100644 --- a/MCServer/Plugins/APIDump/Classes/Network.lua +++ b/MCServer/Plugins/APIDump/Classes/Network.lua @@ -303,6 +303,7 @@ g_Server = nil Send = { Params = "Data", Return = "", Notes = "Sends the data (raw string) to the remote peer. The data is sent asynchronously and there is no report on the success of the send operation, other than the connection being closed or reset by the underlying OS." }, Shutdown = { Params = "", Return = "", Notes = "Shuts the socket down for sending data. Notifies the remote peer that there will be no more data coming from us (TCP FIN). The data that is in flight will still be delivered. The underlying socket will be closed when the remote end shuts down as well, or after a timeout." }, StartTLSClient = { Params = "OwnCert, OwnPrivateKey, OwnPrivateKeyPassword", Return = "", Notes = "Starts a TLS handshake on the link, as a client side of the TLS. The Own___ parameters specify the client certificate and its corresponding private key and password; all three parameters are optional and no client certificate is presented to the remote peer if they are not used or all empty. Once the TLS handshake is started by this call, all incoming data is first decrypted before being sent to the OnReceivedData callback, and all outgoing data is queued until the TLS handshake completes, and then sent encrypted over the link." }, + StartTLSServer = { Params = "Certificate, PrivateKey, PrivateKeyPassword, StartTLSData", Return = "", Notes = "Starts a TLS handshake on the link, as a server side of the TLS. The plugin needs to specify the server certificate and its corresponding private key and password. The StartTLSData can contain data that the link has already reported as received but it should be used as part of the TLS handshake. Once the TLS handshake is started by this call, all incoming data is first decrypted before being sent to the OnReceivedData callback, and all outgoing data is queued until the TLS handshake completes, and then sent encrypted over the link." }, }, }, -- cTCPLink -- cgit v1.2.3 From 9c5162041e6e0699283862b87e2e424bf8e3b8b8 Mon Sep 17 00:00:00 2001 From: Mattes D Date: Fri, 20 Feb 2015 14:28:05 +0100 Subject: cNetwork: Added UDP API. --- MCServer/Plugins/APIDump/Classes/Network.lua | 69 ++++++++++++++++++++++------ 1 file changed, 54 insertions(+), 15 deletions(-) (limited to 'MCServer/Plugins/APIDump/Classes/Network.lua') diff --git a/MCServer/Plugins/APIDump/Classes/Network.lua b/MCServer/Plugins/APIDump/Classes/Network.lua index 274c8d035..82a8d52dc 100644 --- a/MCServer/Plugins/APIDump/Classes/Network.lua +++ b/MCServer/Plugins/APIDump/Classes/Network.lua @@ -31,11 +31,12 @@ local Server = cNetwork:Listen(1024, ListenCallbacks); specific plugin-provided function is called. The callbacks are stored in tables which are passed to the API functions, each table contains multiple callbacks for the various situations.

- There are three different callback variants used: LinkCallbacks, LookupCallbacks and - ListenCallbacks. Each is used in the situation appropriate by its name - LinkCallbacks are used + There are four different callback variants used: LinkCallbacks, LookupCallbacks, ListenCallbacks + and UDPCallbacks. Each is used in the situation appropriate by its name - LinkCallbacks are used for handling the traffic on a single network link (plus additionally creation of such link when - connecting as a client), LookupCallbacks are used when doing DNS and reverse-DNS lookups, and - ListenCallbacks are used for handling incoming connections as a server.

+ connecting as a client), LookupCallbacks are used when doing DNS and reverse-DNS lookups, + ListenCallbacks are used for handling incoming connections as a server and UDPCallbacks are used + for incoming UDP datagrams.

LinkCallbacks have the following structure:

@@ -111,7 +112,7 @@ local ListenCallbacks =
 	
 	OnError = function (a_ErrorCode, a_ErrorMsg)
 		-- The specified error has occured while trying to listen
-		-- No other callback will be called for this lookup from now on
+		-- No other callback will be called for this server handle from now on
 		-- This callback is called before the cNetwork:Listen() call returns
 		-- All returned values are ignored
 	end,
@@ -124,6 +125,25 @@ local ListenCallbacks =
 	end,
 }

+

+ UDPCallbacks have the following structure:
+

+local UDPCallbacks =
+{
+	OnError = function (a_ErrorCode, a_ErrorMsg)
+		-- The specified error has occured when trying to listen for incoming UDP datagrams
+		-- No other callback will be called for this endpoint from now on
+		-- This callback is called before the cNetwork:CreateUDPEndpoint() call returns
+		-- All returned values are ignored
+	end,
+
+	OnReceivedData = function ({{cUDPEndpoint|a_UDPEndpoint}}, a_Data, a_RemotePeer, a_RemotePort)
+		-- A datagram has been received on the {{cUDPEndpoint|endpoint}} from the specified remote peer
+		-- a_Data contains the raw received data, as a string
+		-- All returned values are ignored
+	end,
+}
+
]], }, @@ -268,12 +288,31 @@ g_Server = nil Functions = { Connect = { Params = "Host, Port, LinkCallbacks", Return = "bool", Notes = "(STATIC) Begins establishing a (client) TCP connection to the specified host. Uses the LinkCallbacks table to report progress, success, errors and incoming data. Returns false if it fails immediately (bad port value, bad hostname format), true otherwise. Host can be either an IP address or a hostname." }, + CreateUDPEndpoint = { Params = "Port, UDPCallbacks", Return = "{{cUDPEndpoint|UDPEndpoint}}", Notes = "(STATIC) Creates a UDP endpoint that listens for incoming datagrams on the specified port, and can be used to send or broadcast datagrams. Uses the UDPCallbacks to report incoming datagrams or errors. If the endpoint cannot be created, the OnError callback is called with the error details and the returned endpoint will report IsOpen() == false. The plugin needs to store the returned endpoint object for as long as it needs the UDP port open; if the endpoint is garbage-collected by Lua, the socket will be closed and no more incoming data will be reported." }, HostnameToIP = { Params = "Host, LookupCallbacks", Return = "bool", Notes = "(STATIC) Begins a DNS lookup to find the IP address(es) for the specified host. Uses the LookupCallbacks table to report progress, success or errors. Returns false if it fails immediately (bad hostname format), true if the lookup started successfully. Host can be either a hostname or an IP address." }, IPToHostname = { Params = "Address, LookupCallbacks", Return = "bool", Notes = "(STATIC) Begins a reverse-DNS lookup to find out the hostname for the specified IP address. Uses the LookupCallbacks table to report progress, success or errors. Returns false if it fails immediately (bad address format), true if the lookup started successfully." }, Listen = { Params = "Port, ListenCallbacks", Return = "{{cServerHandle|ServerHandle}}", Notes = "(STATIC) Starts listening on the specified port. Uses the ListenCallbacks to report incoming connections or errors. Returns a {{cServerHandle}} object representing the server. If the listen operation failed, the OnError callback is called with the error details and the returned server handle will report IsListening() == false. The plugin needs to store the server handle object for as long as it needs the server running, if the server handle is garbage-collected by Lua, the listening socket will be closed and all current connections dropped." }, }, }, -- cNetwork - + + cServerHandle = + { + Desc = + [[ + This class provides an interface for TCP sockets listening for a connection. In order to listen, the + plugin needs to use the {{cNetwork}}:Listen() function to create the listening socket.

+

+ Note that when Lua garbage-collects this class, the listening socket is closed. Therefore the plugin + should keep it referenced in a global variable for as long as it wants the server running. + ]], + + Functions = + { + Close = { Params = "", Return = "", Notes = "Closes the listening socket. No more connections will be accepted, and all current connections will be closed." }, + IsListening = { Params = "", Return = "bool", Notes = "Returns true if the socket is listening." }, + }, + }, -- cServerHandle + cTCPLink = { Desc = @@ -307,24 +346,24 @@ g_Server = nil }, }, -- cTCPLink - cServerHandle = + cUDPEndpoint = { Desc = [[ - This class provides an interface for TCP sockets listening for a connection. In order to listen, the - plugin needs to use the {{cNetwork}}:Listen() function to create the listening socket.

+ Represents a UDP socket that is listening for incoming datagrams on a UDP port and can send or broadcast datagrams to other peers on the network. Plugins can create an instance of the endpoint by calling {{cNetwork}}:CreateUDPEndpoint(). The endpoints are callback-based - when a datagram is read from the network, the OnRececeivedData() callback is called with details about the datagram. See the additional information in {{cNetwork}} documentation for details.

- Note that when Lua garbage-collects this class, the listening socket is closed. Therefore the plugin - should keep it referenced in a global variable for as long as it wants the server running. + Note that when Lua garbage-collects this class, the listening socket is closed. Therefore the plugin should keep this object referenced in a global variable for as long as it wants the endpoint open. ]], Functions = { - Close = { Params = "", Return = "", Notes = "Closes the listening socket. No more connections will be accepted, and all current connections will be closed." }, - IsListening = { Params = "", Return = "bool", Notes = "Returns true if the socket is listening." }, + Close = { Params = "", Return = "", Notes = "Closes the UDP endpoint. No more datagrams will be reported through the callbacks, the UDP port will be closed." }, + EnableBroadcasts = { Params = "", Return = "", Notes = "Some OSes need this call before they allow UDP broadcasts on an endpoint." }, + GetPort = { Params = "", Return = "number", Notes = "Returns the local port number of the UDP endpoint listening for incoming datagrams. Especially useful if the UDP endpoint was created with auto-assign port (0)." }, + IsOpen = { Params = "", Return = "bool", Notes = "Returns true if the UDP endpoint is listening for incoming datagrams." }, + Send = { Params = "RawData, RemoteHost, RemotePort", Return = "bool", Notes = "Sends the specified raw data (string) to the specified remote host. The RemoteHost can be either a hostname or an IP address; if it is a hostname, the endpoint will queue a DNS lookup first, if it is an IP address, the send operation is executed immediately. Returns true if there was no immediate error, false on any failure. Note that the return value needn't represent whether the packet was actually sent, only if it was successfully queued." }, }, - - }, -- cServerHandle + }, -- cUDPEndpoint } -- cgit v1.2.3 From e39d2d4605f5952dcd8dca2188b545680776796f Mon Sep 17 00:00:00 2001 From: Mattes D Date: Fri, 20 Feb 2015 16:14:44 +0100 Subject: APIDump: Added the UDP zero port policy. --- MCServer/Plugins/APIDump/Classes/Network.lua | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'MCServer/Plugins/APIDump/Classes/Network.lua') diff --git a/MCServer/Plugins/APIDump/Classes/Network.lua b/MCServer/Plugins/APIDump/Classes/Network.lua index 82a8d52dc..797788661 100644 --- a/MCServer/Plugins/APIDump/Classes/Network.lua +++ b/MCServer/Plugins/APIDump/Classes/Network.lua @@ -288,7 +288,7 @@ g_Server = nil Functions = { Connect = { Params = "Host, Port, LinkCallbacks", Return = "bool", Notes = "(STATIC) Begins establishing a (client) TCP connection to the specified host. Uses the LinkCallbacks table to report progress, success, errors and incoming data. Returns false if it fails immediately (bad port value, bad hostname format), true otherwise. Host can be either an IP address or a hostname." }, - CreateUDPEndpoint = { Params = "Port, UDPCallbacks", Return = "{{cUDPEndpoint|UDPEndpoint}}", Notes = "(STATIC) Creates a UDP endpoint that listens for incoming datagrams on the specified port, and can be used to send or broadcast datagrams. Uses the UDPCallbacks to report incoming datagrams or errors. If the endpoint cannot be created, the OnError callback is called with the error details and the returned endpoint will report IsOpen() == false. The plugin needs to store the returned endpoint object for as long as it needs the UDP port open; if the endpoint is garbage-collected by Lua, the socket will be closed and no more incoming data will be reported." }, + CreateUDPEndpoint = { Params = "Port, UDPCallbacks", Return = "{{cUDPEndpoint|UDPEndpoint}}", Notes = "(STATIC) Creates a UDP endpoint that listens for incoming datagrams on the specified port, and can be used to send or broadcast datagrams. Uses the UDPCallbacks to report incoming datagrams or errors. If the endpoint cannot be created, the OnError callback is called with the error details and the returned endpoint will report IsOpen() == false. The plugin needs to store the returned endpoint object for as long as it needs the UDP port open; if the endpoint is garbage-collected by Lua, the socket will be closed and no more incoming data will be reported.
If the Port is zero, the OS chooses an available UDP port for the endpoint; use {{cUDPEndpoint}}:GetPort() to query the port number in such case." }, HostnameToIP = { Params = "Host, LookupCallbacks", Return = "bool", Notes = "(STATIC) Begins a DNS lookup to find the IP address(es) for the specified host. Uses the LookupCallbacks table to report progress, success or errors. Returns false if it fails immediately (bad hostname format), true if the lookup started successfully. Host can be either a hostname or an IP address." }, IPToHostname = { Params = "Address, LookupCallbacks", Return = "bool", Notes = "(STATIC) Begins a reverse-DNS lookup to find out the hostname for the specified IP address. Uses the LookupCallbacks table to report progress, success or errors. Returns false if it fails immediately (bad address format), true if the lookup started successfully." }, Listen = { Params = "Port, ListenCallbacks", Return = "{{cServerHandle|ServerHandle}}", Notes = "(STATIC) Starts listening on the specified port. Uses the ListenCallbacks to report incoming connections or errors. Returns a {{cServerHandle}} object representing the server. If the listen operation failed, the OnError callback is called with the error details and the returned server handle will report IsListening() == false. The plugin needs to store the server handle object for as long as it needs the server running, if the server handle is garbage-collected by Lua, the listening socket will be closed and all current connections dropped." }, -- cgit v1.2.3