System.Net.Socket.TSocket.OpenBroadcast

Delphi

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

C++

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

Description

Configures your socket to send local sub-net broadcasts to the specified port or endpoint.

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

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

Exception	Exception.Message	Scenarios
ESocketError	Network socket error: <error message> (<error code>), on API 'setsockopt'	The operating system reported an error while configuring your socket to send broadcast data. For more information, see the following documentation for the operating system where your application was running: Windows: setsockopt function (MSDN) OS X: setsockopt (OS X Man Pages) iOS: setsockopt (iOS Manual Pages) Android: setsockopt (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) 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 open 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