SQL Server

Send HTTPS Get Without Waiting for the Response

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This example demonstrates sending an HTTP GET request without waiting for the response. SQL Server

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    -- This example assumes the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

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

    -- Connect to the server using TLS
    DECLARE @bAutoReconnect int
    SELECT @bAutoReconnect = 0
    EXEC sp_OAMethod @rest, 'Connect', @success OUT, 'example.com', 443, 1, @bAutoReconnect
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        RETURN
      END

    -- Send a GET request to https://example.com/some/path 
    EXEC sp_OAMethod @rest, 'SendReqNoBody', @success OUT, 'GET', '/some/path'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        RETURN
      END

    -- OK, the request was sent.
    -- Close the connection.
    DECLARE @maxWaitMs int
    SELECT @maxWaitMs = 50
    EXEC sp_OAMethod @rest, 'Disconnect', @success OUT, @maxWaitMs


    PRINT 'GET Request Sent.'

    EXEC @hr = sp_OADestroy @rest


END
GO