(Unicode C) Client Certificate in REST (USB Token or Smartcard)

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Demonstrates how to use a client certificate with a REST connection where the certificate and private key are located on a USB token or smart card.

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#include <C_CkRestW.h>
#include <C_CkSocketW.h>
#include <C_CkCertW.h>

void ChilkatSample(void)
    {
    HCkRestW rest;
    HCkSocketW socket;
    HCkCertW cert;
    BOOL success;
    BOOL bTls;
    int port;
    int maxWaitMs;
    BOOL bAutoReconnect;
    const wchar_t *responseJson;

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

    // This example shows how to use the Chilkat socket object's connection.
    rest = CkRestW_Create();
    socket = CkSocketW_Create();

    // Set the certificate to be used for mutual TLS authentication
    cert = CkCertW_Create();

    // If the smartcard or token requires a PIN...
    CkCertW_putSmartCardPin(cert,L"000000");

    success = CkCertW_LoadFromSmartcard(cert,L"");
    if (success != TRUE) {
        wprintf(L"%s\n",CkCertW_lastErrorText(cert));
        CkRestW_Dispose(rest);
        CkSocketW_Dispose(socket);
        CkCertW_Dispose(cert);
        return;
    }

    success = CkSocketW_SetSslClientCert(socket,cert);
    if (success != TRUE) {
        wprintf(L"%s\n",CkSocketW_lastErrorText(socket));
        CkRestW_Dispose(rest);
        CkSocketW_Dispose(socket);
        CkCertW_Dispose(cert);
        return;
    }

    // Establish the connection using the socket object (with client certificate authentication).
    bTls = TRUE;
    port = 443;
    maxWaitMs = 5000;
    success = CkSocketW_Connect(socket,L"www.example.com",port,bTls,maxWaitMs);
    if (success != TRUE) {
        wprintf(L"Connect Failure Error Code: %d\n",CkSocketW_getConnectFailReason(socket));
        wprintf(L"%s\n",CkSocketW_lastErrorText(socket));
        CkRestW_Dispose(rest);
        CkSocketW_Dispose(socket);
        CkCertW_Dispose(cert);
        return;
    }

    bAutoReconnect = TRUE;

    // Use the connection:
    success = CkRestW_UseConnection(rest,socket,bAutoReconnect);
    if (success != TRUE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        CkSocketW_Dispose(socket);
        CkCertW_Dispose(cert);
        return;
    }

    // At this point we are connected and can make REST calls...
    // For example..
    responseJson = CkRestW_fullRequestNoBody(rest,L"GET",L"/someQuery");
    if (CkRestW_getLastMethodSuccess(rest) != TRUE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        CkSocketW_Dispose(socket);
        CkCertW_Dispose(cert);
        return;
    }



    CkRestW_Dispose(rest);
    CkSocketW_Dispose(socket);
    CkCertW_Dispose(cert);

    }