(SQL Server) TCP/IP Socket Connect to Remote Host:Port

Demonstrates how to create a TCP/IP socket, connect to a remote host:port, and receive a "Hello World!" message.

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

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    -- This example requires the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    DECLARE @socket int
    -- Use "Chilkat_9_5_0.Socket" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Socket', @socket OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- Connect to port 5555 of localhost.
    -- The string "localhost" is for testing on a single computer.
    -- It would typically be replaced with an IP hostname, such
    -- as "www.chilkatsoft.com".
    DECLARE @ssl int
    SELECT @ssl = 0
    DECLARE @maxWaitMillisec int
    SELECT @maxWaitMillisec = 20000
    DECLARE @success int
    EXEC sp_OAMethod @socket, 'Connect', @success OUT, 'localhost', 5555, @ssl, @maxWaitMillisec
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @socket, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @socket
        RETURN
      END

    -- Set maximum timeouts for reading an writing (in millisec)
    EXEC sp_OASetProperty @socket, 'MaxReadIdleMs', 10000
    EXEC sp_OASetProperty @socket, 'MaxSendIdleMs', 10000

    -- Pretend, for the sake of the example, that the
    -- ficticious server is going to send a "Hello World!" 
    -- after accepting the connection.  
    -- Note: Technically, the ReceiveString may not receive the
    -- complete string, although it's highly probable given the short
    -- length of the "Hello World!" message. 
    -- See this Chilkat blog post for more information:
    -- http://www.cknotes.com/?p=302
    DECLARE @receivedMsg nvarchar(4000)
    EXEC sp_OAMethod @socket, 'ReceiveString', @receivedMsg OUT
    EXEC sp_OAGetProperty @socket, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @socket, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @socket
        RETURN
      END

    -- Close the connection with the server
    -- Wait a max of 20 seconds (20000 millsec)
    EXEC sp_OAMethod @socket, 'Close', @success OUT, 20000


    PRINT @receivedMsg

    EXEC @hr = sp_OADestroy @socket


END
GO