(Objective-C) Send XML REST Request, Get Response with No Body (Google Cloud Storage)

Demonstrates sending a RESTful XML request, and receiving a response where the expected response is a header with no body (Content-Length = 0). This example will create a bucket in Google Cloud Storage using the Google Cloud Storage XML API.

See Create a Bucket using the XML API for additional request options.

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#import <CkoAuthGoogle.h>
#import <CkoRest.h>
#import <CkoXml.h>
#import <NSString.h>

// This example will create a bucket in Google Cloud Storage using the XML API.
BOOL success;

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

CkoAuthGoogle *gAuth = [[CkoAuthGoogle alloc] init];
// Obtain an access token as shown in one of the following examples:
// See Get Access Token using a Service Account JSON Key
// See Get Access Token using a P12 File

CkoRest *rest = [[CkoRest alloc] init];

// Connect using TLS.
BOOL bAutoReconnect = YES;
success = [rest Connect: @"www.googleapis.com" port: [NSNumber numberWithInt: 443] tls: YES autoReconnect: bAutoReconnect];

// Provide the authentication credentials (i.e. the access key)
success = [rest SetAuthGoogle: gAuth];

// Build the XML request body for creating a bucket.
// See https://cloud.google.com/storage/docs/xml-api/put-bucket-create
CkoXml *xmlReqBody = [[CkoXml alloc] init];
xmlReqBody.Tag = @"CreateBucketConfiguration";
[xmlReqBody NewChild2: @"LocationConstraint" content: @"us"];
[xmlReqBody NewChild2: @"StorageClass" content: @"STANDARD"];

// Show the HTTP request body we'll be sending.
NSLog(@"%@",[xmlReqBody GetXml]);

// There are no query parameters...

// The HOST header must be specified, because it needs to be different than
// the domain previously passed to the Connect method.
// The name of the bucket is the 1st part of the HOST header.
success = [rest AddHeader: @"Host" value: @"chilkat-example-bucket.storage.googleapis.com"];

// The project ID is specified in an HTTP request header
success = [rest AddHeader: @"x-goog-project-id" value: @"chilkattest-1050"];

// In this case, the response body is expected to be empty.  We can still
// call FullRequestString.  We expect an empty string to be returned.
NSString *responseStr = [rest FullRequestString: @"PUT" uriPath: @"/" bodyText: [xmlReqBody GetXml]];
if (rest.LastMethodSuccess != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

// Check the response status code to make sure it is 200.
int responseStatus = [rest.ResponseStatusCode intValue];
NSLog(@"%@%d",@"Response Status Code = ",responseStatus);