System.Net.Socket.TSocket.ListenBroadcast

Delphi

procedure ListenBroadcast(const Endpoint: TNetEndpoint); overload;
procedure ListenBroadcast(Port: Word); overload; inline;

C++

void __fastcall ListenBroadcast(const TNetEndpoint &Endpoint)/* overload */;
void __fastcall ListenBroadcast(System::Word Port)/* overload */;

Description

Binds your socket to the specified port or endpoint and configures your socket for receiving sub-net broadcasts.

In order to use ListenBroadcast, the type of your socket must be UDP.

A call to ListenBroadcast can raise any of the following exceptions:

Exception	Exception.Message	Scenarios
ESocketError	Network socket error: <error message> (<error code>), on API 'bind'	The operating system reported an error while binding your socket to a local IP address. For more information, see the following documentation for the operating system where your application was running: Windows: bind function (MSDN) Mac OS X: bind (OS X Man Pages) iOS: bind (iOS Manual Pages) Android: bind (Linux Programmer's Manual)
	Network socket error: <error message> (<error code>), on API 'socket'	The operating system reported an error while creating a socket. For more information, see the following documentation for the operating system where your application was running: Windows: socket function (MSDN) Mac OS X: socket (OS X Man Pages) iOS: socket (iOS Manual Pages) Android: socket (Linux Programmer's Manual)
	Only UDP socket types support broadcasts	The type of your socket is not `UDP`. Only UDP sockets support broadcasts.
	Socket already open	You cannot listen on a socket that is already open. A previous call to any of the following methods must have opened the socket already: Bind Connect Create (if you specify a socket handle and a socket address) GetClientSocket Listen ListenBroadcast OpenBroadcast