Objective-C

Send JSON REST Request, Get JSON Response

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Demonstrates sending a RESTful JSON request, and receiving a JSON response. This example will create a bucket in Google Cloud Storage (which involves sending and receiving JSON). Objective-C

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

BOOL success = NO;

// This example will create a bucket in Google Cloud Storage.

// 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 JSON request body for creating a bucket.
// The only required property is the "name", but we'll add more
// to make a better example..
CkoJsonObject *jsonReqBody = [[CkoJsonObject alloc] init];
[jsonReqBody AppendString: @"name" value: @"chilkat-bucket-c"];
[jsonReqBody AppendString: @"kind" value: @"storage#bucket"];
[jsonReqBody AppendString: @"location" value: @"US"];

CkoJsonObject *objVersioning = [[CkoJsonObject alloc] init];
[jsonReqBody AppendObject2: @"versioning" jsonObj: objVersioning];
[objVersioning AppendBool: @"enabled" value: YES];

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

// Add the required query parameter.
// See https://cloud.google.com/storage/docs/json_api/v1/buckets/insert
success = [rest AddQueryParam: @"project" value: @"chilkattest-1050"];

// Add the Content-Type HTTP request header.
success = [rest AddHeader: @"Content-Type" value: @"application/json; charset=UTF-8"];

NSString *jsonResponseStr = [rest FullRequestString: @"POST" uriPath: @"/storage/v1/b" bodyText: [jsonReqBody Emit]];
if (rest.LastMethodSuccess == NO) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

// Show the JSON response.  (See below for a sample JSON response.)
NSLog(@"%@%@",@"Json Response: ",jsonResponseStr);

// {
//  "kind": "storage#bucket",
//  "id": "chilkat-bucket-c",
//  "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-bucket-c",
//  "projectNumber": "999992999999",
//  "name": "chilkat-bucket-c",
//  "timeCreated": "2016-04-29T21:08:10.451Z",
//  "updated": "2016-04-29T21:08:10.451Z",
//  "metageneration": "1",
//  "owner": {
//   "entity": "project-owners-999992999999"
//  },
//  "location": "US",
//  "versioning": {
//   "enabled": true
//  },
//  "storageClass": "STANDARD",
//  "etag": "CAE="
// }
//