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="
//  }
//