(SQL Server) Asynchronous SSL Client (Deprecated) Example

Notice: The functionality described here is deprecated and replaced by a newer model for asynchronous method calls. The newer model was introduced in Chilkat v9.5.0.52, and is identified by methods having names ending in “Async” which return a task object.

Demonstrates how to connect to an SSL server, send a simple message, receive a simple response, and disconnect. This example uses the asynchronous methods to connect, send, and receive.

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)
    -- Notice: The functionality described here is deprecated and replaced 
    -- by a newer model for asynchronous method calls. The newer model was 
    -- introduced in Chilkat v9.5.0.52, and is identified by methods 
    -- having names ending in “Async” which return a task object.

    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

    DECLARE @ssl int
    SELECT @ssl = 1
    DECLARE @maxWaitMillisec int
    SELECT @maxWaitMillisec = 20000

    -- The SSL server hostname may be an IP address, a domain name,
    -- or "localhost".  You'll need to change this:
    DECLARE @sslServerHost nvarchar(4000)

    SELECT @sslServerHost = '123.123.88.88'
    DECLARE @sslServerPort int
    SELECT @sslServerPort = 8123

    -- Connect to the SSL server asynchronously in a background thread.
    DECLARE @success int
    EXEC sp_OAMethod @socket, 'AsyncConnectStart', @success OUT, @sslServerHost, @sslServerPort, @ssl, @maxWaitMillisec
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @socket, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @socket
        RETURN
      END

    -- Wait for the socket to become connected...
    EXEC sp_OAGetProperty @socket, 'AsyncConnectFinished', @iTmp0 OUT
    WHILE (@iTmp0 <> 1)
      BEGIN
        -- Sleep 1 second.
        EXEC sp_OAMethod @socket, 'SleepMs', NULL, 1000
      END

    -- Did the connect fail?
    EXEC sp_OAGetProperty @socket, 'AsyncConnectSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @socket, 'AsyncConnectLog', @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', 20000
    EXEC sp_OASetProperty @socket, 'MaxSendIdleMs', 20000

    -- Send a "Hello Server! -EOM-" message:
    EXEC sp_OAMethod @socket, 'AsyncSendString', @success OUT, 'Hello Server! -EOM-'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @socket, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @socket
        RETURN
      END

    -- Wait for the send to finish
    EXEC sp_OAGetProperty @socket, 'AsyncSendFinished', @iTmp0 OUT
    WHILE (@iTmp0 <> 1)
      BEGIN
        -- Sleep 1 second.
        EXEC sp_OAMethod @socket, 'SleepMs', NULL, 1000
      END

    -- Did the send fail?
    EXEC sp_OAGetProperty @socket, 'AsyncSendSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @socket, 'AsyncSendLog', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @socket
        RETURN
      END

    -- The server (in this example) is going to send a "Hello Client! -EOM-" 
    -- message.  Begin reading asynchronously in a background thread:
    EXEC sp_OAMethod @socket, 'AsyncReceiveUntilMatch', @success OUT, '-EOM-'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @socket, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @socket
        RETURN
      END

    -- Wait for the background read to finish
    EXEC sp_OAGetProperty @socket, 'AsyncReceiveFinished', @iTmp0 OUT
    WHILE (@iTmp0 <> 1)
      BEGIN
        -- Sleep 1 second.
        EXEC sp_OAMethod @socket, 'SleepMs', NULL, 1000
      END

    -- Did the receive fail?
    EXEC sp_OAGetProperty @socket, 'AsyncReceiveSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @socket, 'AsyncReceiveLog', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @socket
        RETURN
      END

    -- Display the received message:
    EXEC sp_OAGetProperty @socket, 'AsyncReceivedString', @sTmp0 OUT
    PRINT @sTmp0

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

    EXEC @hr = sp_OADestroy @socket


END
GO