Visual FoxPro

Bind and Listen on a Randomly Selected Unused Port

See more Socket/SSL/TLS Examples

Demonstrates how to bind and listen on a randomly selected unused port.

Note:The ListenPort property used in this example is available starting in Chilkat v9.5.0.59.

Visual FoxPro

LOCAL lnSuccess
LOCAL loListenSocket
LOCAL lnListenPort

lnSuccess = 0

* This example requires the Chilkat API to have been previously unlocked.
* See Global Unlock Sample for sample code.

loListenSocket = CreateObject('Chilkat.Socket')

* Pass a value of 0 for the port number to randomly select
* an unused port.
* (The 2nd argument allows for a backlog of 25 pending connection requests when accepting connections.)
lnSuccess = loListenSocket.BindAndListen(5555,25)
IF (lnSuccess <> 1) THEN
    ? loListenSocket.LastErrorText
    RELEASE loListenSocket
    CANCEL
ENDIF

* Find out what port was chosen.
* Note: The ListenPort propety was added in Chilkat v9.5.0.59
lnListenPort = loListenSocket.ListenPort
? "Chosen listen port = " + STR(lnListenPort)

RELEASE loListenSocket