SQL Server

POST JSON Without Waiting for the Response

See more REST Examples

This example demonstrates sending a POST w/ content-type "application/json" where the body of the POST contains a JSON document. The POST is sent, but we don't wait 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

    -- Create some sample JSON to be sent in the body of the request.
    DECLARE @sbJson int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbJson OUT

    EXEC sp_OAMethod @sbJson, 'Append', @success OUT, '{"create": [{"name": "Woo Single #1","type": "simple","regular_price": "21.99"}]}'

    -- Add the Content-Type HTTP request header.
    EXEC sp_OAMethod @rest, 'AddHeader', @success OUT, 'Content-Type', 'application/json'

    -- Just send the request.  Don't read the response.
    -- The request is sent to https://example.com/something?arg1=xyz&arg2=abc
    DECLARE @somePath nvarchar(4000)
    SELECT @somePath = '/something?arg1=xyz&arg2=abc'
    EXEC sp_OAMethod @rest, 'SendReqSb', @success OUT, 'POST', @somePath, @sbJson
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @sbJson
        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 'JSON POST Sent.'

    EXEC @hr = sp_OADestroy @rest
    EXEC @hr = sp_OADestroy @sbJson


END
GO