UDPSocketMBS.AddressFamily as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	18.4	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

The address family of the socket.

This is either RAWSocketMBS.AddressFamilyINet (2) for IPv4 or RAWSocketMBS.AddressFamilyINet6 (Mac 30, Windows 23 and Linux 10) for IPv6.
(Read and Write property)

UDPSocketMBS.AvailableBytes as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Returns number of bytes available for reading.

Lasterror is set.
(Read only property)

UDPSocketMBS.BindAddress as String

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

The IP used for bind operation.

This is set by Bind on success.
(Read and Write property)

UDPSocketMBS.BindPort as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

The port used for bind operation.

This is set by Bind on success.
(Read and Write property)

UDPSocketMBS.Broadcast as Boolean

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Whether broadcasts are allowed.

Set to true before sending a broadcast message.
Internally this uses SOL_SOCKET/SO_BROADCAST option.
Lasterror is set.
(Read and Write property)

UDPSocketMBS.Handle as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

The internal socket handle.

(Read and Write property)

UDPSocketMBS.Lasterror as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

The last error code.

Platform dependent.
(Read and Write property)

UDPSocketMBS.LocalIP as String

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	18.0	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Queries local IP.

Can be 0.0.0.0 if unknown.
May only be set if connected or binded.
Lasterror is set.
(Read only property)

UDPSocketMBS.LocalPort as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	18.0	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Queries local port.

Lasterror is set.
Can be -1 if unknown.
(Read only property)

UDPSocketMBS.MulticastInterface as String

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

The interface to use for multicast.

Internally this uses IPPROTO_IP/IP_MULTICAST_IF option.
Lasterror is set.

Assign empty string to use all interfaces.
May return 0.0.0.0 to indicate all interfaces.
(Read and Write property)

UDPSocketMBS.MulticastLoop as Boolean

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Whether multicast packets are also sent to the sending socket.

Internally this uses IPPROTO_IP/IP_MULTICAST_LOOP option.
Lasterror is set.
(Read and Write property)

Some examples using this property:

• /Network/UDP Socket/UDPSocketMBS test

UDPSocketMBS.MulticastTimeToLive as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

The multicast time to live value.

Internally this uses IPPROTO_IP/IP_MULTICAST_TTL option.
Lasterror is set.
Range from 0 to 255.
(Read and Write property)

UDPSocketMBS.Protocol as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	18.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

The socket protocol.

Is ProtocolUDP (17) for UDP sockets.
(Read and Write property)

UDPSocketMBS.ReceiveBufferSize as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Queries the receiving buffer size.

The buffer size may be increased for high-volume connections, or may be decreased to limit the possible backlog of incoming data. The system places an absolute limit on these values.
Internally this uses SOL_SOCKET/SO_RCVBUF option.
Lasterror is set.
(Read and Write property)

UDPSocketMBS.ReuseAddress as Boolean

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Allows reuse of same port.

Internally this uses SOL_SOCKET/SO_REUSEADDR option.

see also
http://stackoverflow.com/questions/14388706/socket-options-so-reuseaddr-and-so-reuseport-how-do-they-differ-do-they-mean-t

Lasterror is set.
(Read and Write property)

UDPSocketMBS.ReusePort as Boolean

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.4	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Allow reuse of same port and IP.

Internally this uses SOL_SOCKET/SO_REUSEPORT option.
On Windows, this is not supported, so this property sets ReuseAddress.
Lasterror is set.
(Read and Write property)

UDPSocketMBS.SendBufferSize as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

The sending buffer size.

The buffer size may be increased for high-volume connections, or may be decreased to limit the possible backlog of incoming data. The system places an absolute limit on these values.
Internally this uses SOL_SOCKET/SO_SNDBUF option.
Lasterror is set.
(Read and Write property)

UDPSocketMBS.SocketError as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

The native socket error.

Internally this uses SOL_SOCKET/SO_ERROR option.
Lasterror is set.
(Read only property)

UDPSocketMBS.SocketType as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	18.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

The socket type.

Is SocketTypeDatagram (2) for UDP sockets.
(Read and Write property)

UDPSocketMBS.TimeToLive as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

The time to live value.

Internally this uses IPPROTO_IP/IP_TTL option.
Lasterror is set.
Range from 0 to 255.
(Read and Write property)

Some examples using this property:

• /Network/UDP Socket/UDPSocketMBS test

UDPSocketMBS.Type as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Socket type.

Always 2 as this is a datagram socket.
Internally this uses SOL_SOCKET/SO_TYPE option.
Lasterror is set.
(Read only property)

UDPSocketMBS.TypeOfService as Integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Network	MBS Network Plugin	14.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

The type of service value.

Works only on BSD Sockets.

Possible values:
IPTOS_MINCOST = 2
IPTOS_RELIABILITY = 4
IPTOS_THROUGHPUT = 8
IPTOS_LOWDELAY = 16

Internally this uses IPPROTO_IP/IP_TOS option.
(May not work on Windows.

Lasterror is set.
(Read and Write property)