SQL Server

TCP Socket Connect through HTTP Proxy

See more Socket/SSL/TLS Examples

Demonstrates how to connect through an HTTP proxy server. 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
    DECLARE @iTmp0 int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

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

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

    --  To connect through an HTTP proxy, set the HttpProxyHostname
    --  and HttpProxyPort properties to the hostname (or IP address)
    --  and port of the HTTP proxy.  Typical port numbers used by
    --  HTTP proxy servers are 3128 and 8080.
    EXEC sp_OASetProperty @socket, 'HttpProxyHostname', 'www.my-http-proxy.com'
    EXEC sp_OASetProperty @socket, 'HttpProxyPort', 3128

    --  Important:  Your HTTP proxy server must allow non-HTTP
    --  traffic to pass.  Otherwise this does not work.

    --  Connect (via the HTTP proxy) to port 5555 of 192.168.1.108.
    --  hostname may be a domain name or IP address.
    DECLARE @hostname nvarchar(4000)
    SELECT @hostname = '192.168.1.108'
    DECLARE @ssl int
    SELECT @ssl = 0
    DECLARE @maxWaitMillisec int
    SELECT @maxWaitMillisec = 20000
    EXEC sp_OAMethod @socket, 'Connect', @success OUT, @hostname, 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

    --  The ficticious server (in this example) is going to send a "Hello World!" 
    --  message.  Read it:
    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