SocketService

A #GSocketService is an object that represents a service that is provided to the network or over local sockets. When a new connection is made to the service the #GSocketService::incoming signal is emitted.

A #GSocketService is a subclass of #GSocketListener and you need to add the addresses you want to accept connections on with the #GSocketListener APIs.

There are two options for implementing a network service based on #GSocketService. The first is to create the service using g_socket_service_new() and to connect to the #GSocketService::incoming signal. The second is to subclass #GSocketService and override the default signal handler implementation.

In either case, the handler must immediately return, or else it will block additional incoming connections from being serviced. If you are interested in writing connection handlers that contain blocking code then see #GThreadedSocketService.

The socket service runs on the main loop of the [thread-default context][g-main-context-push-thread-default-context] of the thread it is created in, and is not threadsafe in general. However, the calls to start and stop the service are thread-safe so these can be used from threads that handle incoming clients.

class SocketService : SocketListener {

protected

GSocketService* gSocketService;

GSocketService* getSocketServiceStruct(bool transferOwnership);

void* getStruct();

this(GSocketService* gSocketService, bool ownedRef);

static GType getType();

gulong addOnIncoming(bool delegate(SocketConnection, ObjectG, SocketService) dlg, ConnectFlags connectFlags);

}

Constructors

this this(GSocketService* gSocketService, bool ownedRef): Sets our main struct and passes it to the parent class.
this this(): Creates a new #GSocketService with no sockets to listen for. New listeners can be added with e.g. g_socket_listener_add_address() or g_socket_listener_add_inet_port().

Members

Functions

addOnIncoming gulong addOnIncoming(bool delegate(SocketConnection, ObjectG, SocketService) dlg, ConnectFlags connectFlags): The ::incoming signal is emitted when a new incoming connection to @service needs to be handled. The handler must initiate the handling of @connection, but may not block; in essence, asynchronous operations must be used.
getSocketServiceStruct GSocketService* getSocketServiceStruct(bool transferOwnership): Get the main Gtk struct
getStruct void* getStruct(): the main Gtk struct as a void*
isActive bool isActive(): Check whether the service is active or not. An active service will accept new clients that connect, while a non-active service will let connecting clients queue up until the service is started.
start void start(): Restarts the service, i.e. start accepting connections from the added sockets when the mainloop runs. This only needs to be called after the service has been stopped from g_socket_service_stop().
stop void stop(): Stops the service, i.e. stops accepting connections from the added sockets when the mainloop runs.

Static functions

getType GType getType()

Variables

gSocketService GSocketService* gSocketService;: the main Gtk struct

Inherited Members

From SocketListener

gSocketListener GSocketListener* gSocketListener;: the main Gtk struct
getSocketListenerStruct GSocketListener* getSocketListenerStruct(bool transferOwnership): Get the main Gtk struct
getStruct void* getStruct(): the main Gtk struct as a void*
getType GType getType()
accept SocketConnection accept(ObjectG sourceObject, Cancellable cancellable): Blocks waiting for a client to connect to any of the sockets added to the listener. Returns a #GSocketConnection for the socket that was accepted.
acceptAsync void acceptAsync(Cancellable cancellable, GAsyncReadyCallback callback, void* userData): This is the asynchronous version of g_socket_listener_accept().
acceptFinish SocketConnection acceptFinish(AsyncResultIF result, ObjectG sourceObject): Finishes an async accept operation. See g_socket_listener_accept_async()
acceptSocket Socket acceptSocket(ObjectG sourceObject, Cancellable cancellable): Blocks waiting for a client to connect to any of the sockets added to the listener. Returns the #GSocket that was accepted.
acceptSocketAsync void acceptSocketAsync(Cancellable cancellable, GAsyncReadyCallback callback, void* userData): This is the asynchronous version of g_socket_listener_accept_socket().
acceptSocketFinish Socket acceptSocketFinish(AsyncResultIF result, ObjectG sourceObject): Finishes an async accept operation. See g_socket_listener_accept_socket_async()
addAddress bool addAddress(SocketAddress address, GSocketType type, GSocketProtocol protocol, ObjectG sourceObject, SocketAddress effectiveAddress): Creates a socket of type @type and protocol @protocol, binds it to @address and adds it to the set of sockets we're accepting sockets from.
addAnyInetPort ushort addAnyInetPort(ObjectG sourceObject): Listens for TCP connections on any available port number for both IPv6 and IPv4 (if each is available).
addInetPort bool addInetPort(ushort port, ObjectG sourceObject): Helper function for g_socket_listener_add_address() that creates a TCP/IP socket listening on IPv4 and IPv6 (if supported) on the specified port on all interfaces.
addSocket bool addSocket(Socket socket, ObjectG sourceObject): Adds @socket to the set of sockets that we try to accept new clients from. The socket must be bound to a local address and listened to.
close void close(): Closes all the sockets in the listener.
setBacklog void setBacklog(int listenBacklog): Sets the listen backlog on the sockets in the listener. This must be called before adding any sockets, addresses or ports to the #GSocketListener (for example, by calling g_socket_listener_add_inet_port()) to be effective.
addOnEvent gulong addOnEvent(void delegate(GSocketListenerEvent, Socket, SocketListener) dlg, ConnectFlags connectFlags): Emitted when @listener's activity on @socket changes state. Note that when @listener is used to listen on both IPv4 and IPv6, a separate set of signals will be emitted for each, and the order they happen in is undefined.