(PowerBuilder) Bind and Listen on a Randomly Selected Unused Port

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.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_ListenSocket
integer li_Success
integer li_ListenPort

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

loo_ListenSocket = create oleobject
// Use "Chilkat_9_5_0.Socket" for versions of Chilkat < 10.0.0
li_rc = loo_ListenSocket.ConnectToNewObject("Chilkat.Socket")
if li_rc < 0 then
    destroy loo_ListenSocket
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// 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.)
li_Success = loo_ListenSocket.BindAndListen(5555,25)
if li_Success <> 1 then
    Write-Debug loo_ListenSocket.LastErrorText
    destroy loo_ListenSocket
    return
end if

// Find out what port was chosen.
// Note: The ListenPort propety was added in Chilkat v9.5.0.59
li_ListenPort = loo_ListenSocket.ListenPort
Write-Debug "Chosen listen port = " + string(li_ListenPort)


destroy loo_ListenSocket