IPWorks 2020 C++ Builder Edition

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LocalPort Property

The TCP port in the local host where IPPort binds.


__property int LocalPort = { read=FLocalPort, write=FSetLocalPort };

Default Value



The LocalPort property must be set before a connection is attempted. It instructs the component to bind to a specific port (or communication endpoint) in the local machine.

Setting it to 0 (default) enables the TCP/IP stack to choose a port at random. The chosen port will be shown by the LocalPort property after the connection is established.

LocalPort cannot be changed once a connection is made. Any attempt to set the LocalPort property when a connection is active will generate an error.

The LocalPort property is useful when trying to connect to services that require a trusted port in the client side.

Data Type


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IPWorks 2020 C++ Builder Edition - Version 20.0 [Build 8161]