Package org.gnome.gio

Interface SocketConnectable

All Superinterfaces:
Proxy
All Known Implementing Classes:
InetSocketAddress, NativeSocketAddress, NetworkAddress, NetworkService, ProxyAddress, SocketAddress, SocketAddress.SocketAddress$Impl, SocketConnectable.SocketConnectable$Impl, UnixSocketAddress
@Generated("io.github.jwharm.JavaGI") public interface SocketConnectable extends Proxy
Objects that describe one or more potential socket endpoints implement GSocketConnectable. Callers can then use enumerate() to get a SocketAddressEnumerator to try out each socket address in turn until one succeeds, as shown in the sample code below. 
MyConnectionType *
 connect_to_host (const char    *hostname,
                  guint16        port,
                  GCancellable  *cancellable,
                  GError       **error)
 {
   MyConnection *conn = NULL;
   GSocketConnectable *addr;
   GSocketAddressEnumerator *enumerator;
   GSocketAddress *sockaddr;
   GError *conn_error = NULL;

   addr = g_network_address_new (hostname, port);
   enumerator = g_socket_connectable_enumerate (addr);
   g_object_unref (addr);

   // Try each sockaddr until we succeed. Record the first connection error,
   // but not any further ones (since they'll probably be basically the same
   // as the first).
   while (!conn && (sockaddr = g_socket_address_enumerator_next (enumerator, cancellable, error))
     {
       conn = connect_to_sockaddr (sockaddr, conn_error ? NULL : &conn_error);
       g_object_unref (sockaddr);
     }
   g_object_unref (enumerator);

   if (conn)
     {
       if (conn_error)
         {
           // We couldn't connect to the first address, but we succeeded
           // in connecting to a later address.
           g_error_free (conn_error);
         }
       return conn;
     }
   else if (error)
     {
       /// Either initial lookup failed, or else the caller cancelled us.
       if (conn_error)
         g_error_free (conn_error);
       return NULL;
     }
   else
     {
       g_error_propagate (error, conn_error);
       return NULL;
     }
 }