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Visual FoxPro Examples

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(Visual FoxPro) REST through SSH Tunnel

Demonstrates how to connect through an SSH Tunnel (via port-forwarding) to make REST API calls.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

LOCAL loTunnel
LOCAL lcSshHostname
LOCAL lnSshPort
LOCAL lnSuccess
LOCAL loRest
LOCAL loChannel
LOCAL lnBTls
LOCAL lnPort
LOCAL lnMaxWaitMs
LOCAL loAuthAws
LOCAL lcResponseXml
LOCAL loXml

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

loTunnel = CreateObject('Chilkat_9_5_0.Socket')

lcSshHostname = "www.my-ssh-server.com"
lnSshPort = 22

*  Connect to an SSH server and establish the SSH tunnel:
lnSuccess = loTunnel.SshOpenTunnel(lcSshHostname,lnSshPort)
IF (lnSuccess <> 1) THEN
    ? loTunnel.LastErrorText
    RELEASE loTunnel
    CANCEL
ENDIF

*  Authenticate with the SSH server via a login/password
*  or with a public key.
*  This example demonstrates SSH password authentication.
lnSuccess = loTunnel.SshAuthenticatePw("mySshLogin","mySshPassword")
IF (lnSuccess <> 1) THEN
    ? loTunnel.LastErrorText
    RELEASE loTunnel
    CANCEL
ENDIF

*   OK, the SSH tunnel is setup.  Now open a channel within the tunnel.
*   (Any number of channels may be created from the same SSH tunnel.
*   Multiple channels may coexist at the same time.)

*  This example connects to a REST server through the SSH tunnel.
*  It will connect to the Amazon AWS service for this example.
loRest = CreateObject('Chilkat_9_5_0.Rest')

lnBTls = 1
lnPort = 443
lnMaxWaitMs = 5000

*  This returns a socket object that is a single channel within the SSH tunnel.
loChannel = loTunnel.SshOpenChannel("s3.amazonaws.com",lnPort,lnBTls,lnMaxWaitMs)
IF (loTunnel.LastMethodSuccess <> 1) THEN
    ? loTunnel.LastErrorText
    RELEASE loTunnel
    RELEASE loRest
    CANCEL
ENDIF

*  Use the connection.  (This connection is a TLS running on an SSH channel through an SSH tunnel.
*  In other words, TLS is wrapped within the SSH tunnel.)
lnSuccess = loRest.UseConnection(loChannel,1)
IF (lnSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loChannel
    RELEASE loTunnel
    RELEASE loRest
    CANCEL
ENDIF

*  Provide AWS credentials for the REST call.
loAuthAws = CreateObject('Chilkat_9_5_0.AuthAws')
loAuthAws.AccessKey = "AWS_ACCESS_KEY"
loAuthAws.SecretKey = "AWS_SECRET_KEY"
loAuthAws.ServiceName = "s3"
lnSuccess = loRest.SetAuthAws(loAuthAws)

*  List all buckets for the account...
lcResponseXml = loRest.FullRequestNoBody("GET","/")
IF (loRest.LastMethodSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loChannel
    RELEASE loTunnel
    RELEASE loRest
    RELEASE loAuthAws
    CANCEL
ENDIF

loXml = CreateObject('Chilkat_9_5_0.Xml')
lnSuccess = loXml.LoadXml(lcResponseXml)

*  Show the full XML returned.
? loXml.GetXml()

*  Iterate over the buckets, showing each bucket name.
lnSuccess = loXml.FindChild2("Buckets")
IF (loXml.FirstChild2() = 1) THEN
    ? loXml.GetChildContent("Name")
    DO WHILE (loXml.NextSibling2() = 1)
        ? loXml.GetChildContent("Name")
    ENDDO
ENDIF

*  Move the internal pointer back to the root node.
loXml.GetRoot2()

RELEASE loChannel

RELEASE loTunnel
RELEASE loRest
RELEASE loAuthAws
RELEASE loXml


 

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