(SQL Server) SFTP using SOCKS Proxy

Demonstrates how to connect to an SFTP/SSH server through a SOCKS4 or SOCKS5 proxy.

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
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    -- This example assumes the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    DECLARE @sftp int
    -- Use "Chilkat_9_5_0.SFtp" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.SFtp', @sftp OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- To use a SOCKS4 or SOCKS5 proxy, simply set the following
    -- properties prior to connecting:
    -- The SOCKS hostname may be a domain name or 
    -- IP address:
    EXEC sp_OASetProperty @sftp, 'SocksHostname', 'www.mysocksproxyserver.com'
    EXEC sp_OASetProperty @sftp, 'SocksPort', 1080
    EXEC sp_OASetProperty @sftp, 'SocksUsername', 'myProxyLogin'
    EXEC sp_OASetProperty @sftp, 'SocksPassword', 'myProxyPassword'

    -- Set the SOCKS version to 4 or 5 based on the version
    -- of the SOCKS proxy server:
    EXEC sp_OASetProperty @sftp, 'SocksVersion', 5

    -- Note: SOCKS4 servers only support usernames without passwords.
    -- SOCKS5 servers support full login/password authentication.

    -- Connect to the SSH server.  
    -- The standard SSH port = 22
    -- The hostname may be a hostname or IP address.
    DECLARE @hostname nvarchar(4000)
    SELECT @hostname = 'sftp.example.com'
    DECLARE @port int
    SELECT @port = 22
    DECLARE @success int
    EXEC sp_OAMethod @sftp, 'Connect', @success OUT, @hostname, @port
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @sftp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @sftp
        RETURN
      END

    -- Your application is now connected to an SFTP/SSH server 
    -- through a SOCKS4 or SOCKS5 proxy. 
    -- ..

    EXEC @hr = sp_OADestroy @sftp


END
GO