Bind and Listen on an Available Port in a Range

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Demonstrates Socket.BindAndListenPortRange, which searches an inclusive port range for an available TCP port, binds it, and begins listening. It returns the selected port, or -1 on failure.

--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @socket int
    EXEC @hr = sp_OACreate 'Chilkat.Socket', @socket OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    --  Search the inclusive port range for an available TCP port, bind it, and begin listening.  The
    --  method returns the selected port, or -1 when no port can be bound.
    DECLARE @boundPort int
    EXEC sp_OAMethod @socket, 'BindAndListenPortRange', @boundPort OUT, 5000, 5100, 25
    IF @boundPort < 0
      BEGIN
        EXEC sp_OAGetProperty @socket, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @socket
        RETURN
      END

    PRINT 'Listening on port ' + @boundPort

    EXEC @hr = sp_OADestroy @socket


END
GO