Objective-C

Vonage UC Extend Refresh Access Token

See more OAuth2 Examples

Refreshes the access token for Vonage UC Extend apps. Objective-C

#import <CkoJsonObject.h>
#import <CkoOAuth2.h>
#import <CkoDateTime.h>
#import <CkoStringBuilder.h>

BOOL success = NO;

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

//  See Get Vonage UC Access Token 
//  for sample code showing how to obtain a Vonage access token for desktop apps.

CkoJsonObject *jsonToken = [[CkoJsonObject alloc] init];
success = [jsonToken LoadFile: @"qa_data/tokens/vonage_uc_extend.json"];
if (success != YES) {
    NSLog(@"%@",@"Failed to load vonage_uc_extend.json");
    return;
}

CkoOAuth2 *oauth2 = [[CkoOAuth2 alloc] init];

oauth2.TokenEndpoint = @"https://api.vonage.com/token";

//  Replace these with actual values.
oauth2.ClientId = @"CLIENT_ID";
oauth2.ClientSecret = @"CLIENT_SECRET";

//  Get the "refresh_token"
oauth2.RefreshToken = [jsonToken StringOf: @"refresh_token"];

//  Send the HTTP POST to refresh the access token..
oauth2.VerboseLogging = YES;
success = [oauth2 RefreshAccessToken];
if (success != YES) {
    NSLog(@"%@",oauth2.LastErrorText);
    return;
}

//  Load the access token response into the json object 
[jsonToken Load: oauth2.AccessTokenResponse];

//  If an "expires_on" member does not exist, then add the JSON member by
//  getting the current system date/time and adding the "expires_in" seconds.
//  This way we'll know when the token expires.
if ([jsonToken HasMember: @"expires_on"] == NO) {
    CkoDateTime *dtExpire = [[CkoDateTime alloc] init];
    [dtExpire SetFromCurrentSystemTime];
    [dtExpire AddSeconds: [jsonToken IntOf: @"expires_in"]];
    [jsonToken AppendString: @"expires_on" value: [dtExpire GetAsUnixTimeStr: NO]];
}

//  Save the new JSON access token response to a file.
//  The access + refresh tokens contained in this JSON will be needed for the next refresh.
CkoStringBuilder *sbJson = [[CkoStringBuilder alloc] init];
jsonToken.EmitCompact = NO;
[jsonToken EmitSb: sbJson];
[sbJson WriteFile: @"qa_data/tokens/vonage_uc_extend.json" charset: @"utf-8" emitBom: NO];

NSLog(@"%@",@"OAuth2 authorization granted!");
NSLog(@"%@%@",@"New Access Token = ",oauth2.AccessToken);