Chilkat Examples

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Objective-C Web API Examples

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(Objective-C) ETrade Renew Access Token

Renews an ETrade OAuth access token.

For more information, see https://apisb.etrade.com/docs/api/authorization/renew_access_token.html

Chilkat Objective-C Library Downloads

MAC OS X (Cocoa) Libs

iOS Libs

#import <CkoHttp.h>
#import <CkoJsonObject.h>
#import <CkoHttpResponse.h>
#import <CkoStringBuilder.h>
#import <CkoHashtable.h>
#import <NSString.h>
#import <CkoFileAccess.h>

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

CkoHttp *http = [[CkoHttp alloc] init];

http.OAuth1 = YES;
http.OAuthVerifier = @"";
http.OAuthConsumerKey = @"ETRADE_CONSUMER_KEY";
http.OAuthConsumerSecret = @"ETRADE_CONSUMER_SECRET";

// Load the access token previously obtained via the OAuth1 Authorization
CkoJsonObject *jsonToken = [[CkoJsonObject alloc] init];
BOOL success = [jsonToken LoadFile: @"qa_data/tokens/etrade.json"];
if (success != YES) {
    NSLog(@"%@",@"Failed to load OAuth1 token");
    return;
}

http.OAuthToken = [jsonToken StringOf: @"oauth_token"];
http.OAuthTokenSecret = [jsonToken StringOf: @"oauth_token_secret"];

CkoHttpResponse *resp = [http QuickGetObj: @"https://api.etrade.com/oauth/renew_access_token"];
if (http.LastMethodSuccess != YES) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

// Make sure a successful response was received.
if ([resp.StatusCode intValue] != 200) {
    NSLog(@"%@",resp.StatusLine);
    NSLog(@"%@",resp.Header);
    NSLog(@"%@",resp.BodyStr);
    return;
}

// If successful, the resp.BodyStr contains something like this:
// oauth_token=%3TiQRgQCRGPo7Xdk6G8QDSEzX0Jsy6sKNcULcDavAGgU%3D&oauth_token_secret=%7RrC9scEpzcwSEMy4vE7nodSzPLqfRINnTNY4voczyFM%3D
NSLog(@"%@",resp.BodyStr);

CkoStringBuilder *sbRespBody = [[CkoStringBuilder alloc] init];
[resp GetBodySb: sbRespBody];
if ([sbRespBody ContentsEqual: @"Access Token has been renewed" caseSensitive: NO]) {
    // The documentation at https://apisb.etrade.com/docs/api/authorization/renew_access_token.html
    // indicates that the response should be as described above.  However, the response received when
    // trying to refresh a non-expired token was "Access Token has been renewed"
    NSLog(@"%@",@"Keeping the same access token, but it's renewed...");
    return;
}

CkoHashtable *hashTab = [[CkoHashtable alloc] init];
[hashTab AddQueryParams: resp.BodyStr];

NSString *accessToken = [hashTab LookupStr: @"oauth_token"];
NSString *accessTokenSecret = [hashTab LookupStr: @"oauth_token_secret"];

// The access token + secret is what should be saved and used for
// subsequent REST API calls.
NSLog(@"%@%@",@"Access Token = ",accessToken);
NSLog(@"%@%@",@"Access Token Secret = ",accessTokenSecret);

// Save this access token for future calls.
// Just in case we need user_id and screen_name, save those also..
CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json AppendString: @"oauth_token" value: accessToken];
[json AppendString: @"oauth_token_secret" value: accessTokenSecret];

CkoFileAccess *fac = [[CkoFileAccess alloc] init];
[fac WriteEntireTextFile: @"qa_data/tokens/etrade.json" fileData: [json Emit] charset: @"utf-8" includePreamble: NO];

NSLog(@"%@",@"Success.");
 

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