(Unicode C++) REST through SSH Tunnel

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

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#include <CkSocketW.h>
#include <CkRestW.h>
#include <CkAuthAwsW.h>
#include <CkXmlW.h>

void ChilkatSample(void)
    {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkSocketW tunnel;

    const wchar_t *sshHostname = L"sftp.example.com";
    int sshPort = 22;

    // Connect to an SSH server and establish the SSH tunnel:
    bool success = tunnel.SshOpenTunnel(sshHostname,sshPort);
    if (success != true) {
        wprintf(L"%s\n",tunnel.lastErrorText());
        return;
    }

    // Authenticate with the SSH server via a login/password
    // or with a public key.
    // This example demonstrates SSH password authentication.
    success = tunnel.SshAuthenticatePw(L"mySshLogin",L"mySshPassword");
    if (success != true) {
        wprintf(L"%s\n",tunnel.lastErrorText());
        return;
    }

    //  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.
    CkRestW rest;
    CkSocketW *channel = 0;

    bool bTls = true;
    int port = 443;
    int maxWaitMs = 5000;

    // This returns a socket object that is a single channel within the SSH tunnel.
    channel = tunnel.SshOpenChannel(L"s3.amazonaws.com",port,bTls,maxWaitMs);
    if (tunnel.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",tunnel.lastErrorText());
        return;
    }

    // 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.)
    success = rest.UseConnection(*channel,true);
    if (success != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        delete channel;
        return;
    }

    // Provide AWS credentials for the REST call.
    CkAuthAwsW authAws;
    authAws.put_AccessKey(L"AWS_ACCESS_KEY");
    authAws.put_SecretKey(L"AWS_SECRET_KEY");
    authAws.put_ServiceName(L"s3");
    success = rest.SetAuthAws(authAws);

    // List all buckets for the account...
    const wchar_t *responseXml = rest.fullRequestNoBody(L"GET",L"/");
    if (rest.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        delete channel;
        return;
    }

    CkXmlW xml;
    success = xml.LoadXml(responseXml);

    // Show the full XML returned.
    wprintf(L"%s\n",xml.getXml());

    // Iterate over the buckets, showing each bucket name.
    success = xml.FindChild2(L"Buckets");
    if (xml.FirstChild2() == true) {
        wprintf(L"%s\n",xml.getChildContent(L"Name"));
        while ((xml.NextSibling2() == true)) {
            wprintf(L"%s\n",xml.getChildContent(L"Name"));
        }

    }

    // Move the internal pointer back to the root node.
    xml.GetRoot2();

    delete channel;
    }