Asynchronous SSL Client Example

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.

Download Chilkat Socket ActiveX

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

    DECLARE @success int

    EXEC sp_OAMethod @socket, 'UnlockComponent', @success OUT, 'Anything for 30-day trial'
    IF @success <> 1
      BEGIN
        PRINT 'Failed to unlock 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.
    EXEC sp_OAMethod @socket, 'AsyncConnectStart', @success OUT, @sslServerHost, @sslServerPort, @ssl, @maxWaitMillisec
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @socket, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END

    --  Wait for the socket to become connected...
    EXEC sp_OAGetProperty @socket, 'AsyncConnectFinished', @sTmp0 OUT
    WHILE (@sTmp0 <> 1)
      BEGIN
        --  Sleep 1 second.
        EXEC sp_OAMethod @socket, 'SleepMs', NULL, 1000
      END

    --  Did the connect fail?
    EXEC sp_OAGetProperty @socket, 'AsyncConnectSuccess', @sTmp0 OUT
    IF @sTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @socket, 'AsyncConnectLog', @sTmp0 OUT
        PRINT @sTmp0
        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
        RETURN
      END

    --  Wait for the send to finish
    EXEC sp_OAGetProperty @socket, 'AsyncSendFinished', @sTmp0 OUT
    WHILE (@sTmp0 <> 1)
      BEGIN
        --  Sleep 1 second.
        EXEC sp_OAMethod @socket, 'SleepMs', NULL, 1000
      END

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

    --  Wait for the background read to finish
    EXEC sp_OAGetProperty @socket, 'AsyncReceiveFinished', @sTmp0 OUT
    WHILE (@sTmp0 <> 1)
      BEGIN
        --  Sleep 1 second.
        EXEC sp_OAMethod @socket, 'SleepMs', NULL, 1000
      END

    --  Did the receive fail?
    EXEC sp_OAGetProperty @socket, 'AsyncReceiveSuccess', @sTmp0 OUT
    IF @sTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @socket, 'AsyncReceiveLog', @sTmp0 OUT
        PRINT @sTmp0
        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', NULL, 20000

END
GO