Using Smart Proxy Manager with Objective-C

Note

All the code in this documentation has been tested with Xcode 13.1.

1. In order to work with Objective-C make sure you have Xcode installed.

2. Install the Zyte CA certificate for HTTPS request support.

3. Create a new macOS Project and select Application > Command Line Tool.

4. Copy entire Sample Code given below and paste in main.m.

5. Replace <SPM-APIKEY> with Zyte Smart Proxy Manager API Key.

6. Press Command + R to run the program or Select Product > Run from the Menu bar.

7. The output can be found on Console. Active Console by pressing Shift + Command + C or by Selecting View > Debug Area > Activate Console from the Menu bar.

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
    // Replace <SPM-APIKEY> with Zyte Smart Proxy Manager API Key
    NSString *username = @"<SPM-APIKEY>";
    NSString *password = @"";
    NSString *authString = [NSString stringWithFormat:@"%@:%@",
                            username,
                            password];

    // Convert authString to an NSData instance
    NSData *authData = [authString dataUsingEncoding:NSUTF8StringEncoding];

    // Build the header string with base64 encoded data
    NSString *authHeader = [NSString stringWithFormat: @"Basic %@",
                            [authData base64EncodedStringWithOptions:0]];

    // Building session configuration with proxy information
    NSString* proxyHost = @"proxy.zyte.com";
    NSNumber* proxyPort = [NSNumber numberWithInt: 8011];
    NSDictionary *proxyDict = @{
        @"HTTPEnable"  : [NSNumber numberWithInt:1],
        (NSString *)kCFNetworkProxiesHTTPProxy  : proxyHost,
        (NSString *)kCFNetworkProxiesHTTPPort  : proxyPort,

        @"HTTPSEnable" : [NSNumber numberWithInt:1],
        (NSString *)kCFNetworkProxiesHTTPSProxy : proxyHost,
        (NSString *)kCFNetworkProxiesHTTPSPort : proxyPort,
    };
    NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration ephemeralSessionConfiguration];
    configuration.connectionProxyDictionary = proxyDict;
    [configuration setHTTPAdditionalHeaders:@{@"Proxy-Authorization": authHeader}];

    // Create a NSURLSession with the proxy-aware configuration
    NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration];

    // Setting URL to request
    NSURL *url = [NSURL URLWithString:@"https://toscrape.com"];

    // Dispatch the request on the custom configured session
    NSURLSessionDataTask *dataTask = [session dataTaskWithURL: url completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
                NSLog(@"Response: %@",response);
                NSLog(@"Data: %@",data);
                NSLog(@"Error: %@",error);
                CFRunLoopStop(CFRunLoopGetCurrent());
                exit(EXIT_SUCCESS);
            }];
            [dataTask resume];

    CFRunLoopRun();
    return 0;
}