Bind and Listen for Incoming Connections

See more Socket/SSL/TLS Examples

Demonstrates Socket.BindAndListen, which binds a TCP listener to a port and places it into listening mode, then accepts an incoming connection.

--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    DECLARE @socket int
    EXEC @hr = sp_OACreate 'Chilkat.Socket', @socket OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    --  Bind a TCP listener to a port and place it into listening mode.  The 2nd argument is the backlog,
    --  the maximum number of pending connections allowed to queue.
    EXEC sp_OAMethod @socket, 'BindAndListen', @success OUT, 5000, 25
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @socket, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @socket
        RETURN
      END

    --  After the listener is established, accept the next incoming connection into a new Socket.
    DECLARE @connectedSock int
    EXEC @hr = sp_OACreate 'Chilkat.Socket', @connectedSock OUT

    EXEC sp_OAMethod @socket, 'AcceptNext', @success OUT, 20000, @connectedSock
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @socket, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @socket
        EXEC @hr = sp_OADestroy @connectedSock
        RETURN
      END

    PRINT 'Accepted a connection.'

    EXEC @hr = sp_OADestroy @socket
    EXEC @hr = sp_OADestroy @connectedSock


END
GO