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(Objective-C) Send JSON REST Request, Get JSON Response

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).

Chilkat Objective-C Library Downloads

MAC OS X (Cocoa) Libs

iOS Libs

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

// This example will create a bucket in Google Cloud Storage.
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 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];
success = [jsonReqBody AddStringAt: [NSNumber numberWithInt: -1] name: @"name" value: @"chilkat-bucket-c"];
success = [jsonReqBody AddStringAt: [NSNumber numberWithInt: -1] name: @"kind" value: @"storage#bucket"];
success = [jsonReqBody AddStringAt: [NSNumber numberWithInt: -1] name: @"location" value: @"US"];
success = [jsonReqBody AddObjectAt: [NSNumber numberWithInt: -1] name: @"versioning"];

CkoJsonObject *pObjVersioning = [jsonReqBody ObjectOf: @"versioning"];
success = [pObjVersioning AddBoolAt: [NSNumber numberWithInt: -1] name: @"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 != YES) {
    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="
// }
// 
 

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