(Objective-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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#import <CkoRest.h>
#import <CkoSocket.h>
#import <CkoCert.h>
#import <NSString.h>

// 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.
CkoRest *rest = [[CkoRest alloc] init];
CkoSocket *socket = [[CkoSocket alloc] init];

// Set the certificate to be used for mutual TLS authentication
CkoCert *cert = [[CkoCert alloc] init];

// If the smartcard or token requires a PIN...
cert.SmartCardPin = @"000000";

BOOL success = [cert LoadFromSmartcard: @""];
if (success != YES) {
    NSLog(@"%@",cert.LastErrorText);
    return;
}

success = [socket SetSslClientCert: cert];
if (success != YES) {
    NSLog(@"%@",socket.LastErrorText);
    return;
}

// Establish the connection using the socket object (with client certificate authentication).
BOOL bTls = YES;
int port = 443;
int maxWaitMs = 5000;
success = [socket Connect: @"www.example.com" port: [NSNumber numberWithInt: port] ssl: bTls maxWaitMs: [NSNumber numberWithInt: maxWaitMs]];
if (success != YES) {
    NSLog(@"%@%d",@"Connect Failure Error Code: ",[socket.ConnectFailReason intValue]);
    NSLog(@"%@",socket.LastErrorText);
    return;
}

BOOL bAutoReconnect = YES;

// Use the connection:
success = [rest UseConnection: socket autoReconnect: bAutoReconnect];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

// At this point we are connected and can make REST calls...
// For example..
NSString *responseJson = [rest FullRequestNoBody: @"GET" uriPath: @"/someQuery"];
if (rest.LastMethodSuccess != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}