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Socket.EnableBroadcast Property

Gets or sets a Boolean value that specifies whether the Socket can send or receive broadcast packets.

Namespace: System.Net.Sockets
Assembly: System (in system.dll)

public bool EnableBroadcast { get; set; }
/** @property */
public boolean get_EnableBroadcast ()

/** @property */
public void set_EnableBroadcast (boolean value)

public function get EnableBroadcast () : boolean

public function set EnableBroadcast (value : boolean)

Not applicable.

Property Value

true if the Socket allows broadcast packets; otherwise, false. The default is false.

Exception typeCondition

SocketException

This option is valid for a datagram socket only.

ObjectDisposedException

The Socket has been closed.

Broadcasting is limited to a specific subnet, and must use User Datagram Protocol (UDP.) For Internet Protocol version 4, you can broadcast to your local subnet by sending a packet to 255.255.255.255; or you can use the directed broadcast address, which is the network portion of an Internet Protocol (IP) address with all bits set in the host portion. For example, if your IP address is 192.168.1.40 (a Class C address, with a netmask of 255.255.255.0 -- the network portion is the first three octets, and the host portion is the last octet), your directed broadcast address is 192.168.1.255.

Setting this property on a Transmission Control Protocol (TCP) socket will have no effect.

The following code example demonstrates the use of the EnableBroadcast property.

static void ConfigureUdpSocket(Socket udpSocket)
{
    // set the Don't Fragment flag.
    udpSocket.DontFragment = true;
    // Enable broadcast.
    udpSocket.EnableBroadcast = true;

    // Disable multicast loopback.
    udpSocket.MulticastLoopback = false;

    Console.WriteLine("Udp Socket configured:");
    Console.WriteLine("  DontFragment {0}", 
                                        udpSocket.DontFragment);
    Console.WriteLine("  EnableBroadcast {0}", 
                                        udpSocket.EnableBroadcast);
    Console.WriteLine("  MulticastLoopback {0}", 
                                        udpSocket.MulticastLoopback);
}

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0
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