iOS AWS v2 S3 Transfer Manager must use specified endpoint

Question

I am developing an iOS app using AWS as its backend. Since I expect users to be world wide, I need to switch where the app should download photos in order to increase latency performance. I have created a S3 bucket in EUWest1 and the other in APNorthEast1. As Yosuke said here (https://forums.aws.amazon.com/message.jspa?messageID=586581#586581), you can change the default configuration of AWSServiceManager.defaultServiceManager() from one region to another in order to prevent the error.

But, I still have the same error result even if I followed his tip. Error is:

Error Domain=com.amazonaws.AWSS3ErrorDomain Code=0 "The operation couldn’t be completed. (com.amazonaws.AWSS3ErrorDomain error 0.)" UserInfo=0x14fb7720 {RequestId=D708XXX8E1EDBXXX, Endpoint=bucket-ap-northeast-1.s3-ap-northeast-1.amazonaws.com, Message=The bucket you are attempting to access must be addressed using the specified endpoint. Please send all future requests to this endpoint., HostId=xxxY31S3yFhpssQe1EsfipWWLw=, Code=PermanentRedirect, Bucket=bucket-ap-northeast-1}

And this is my code:

var credentialsProvider = AWSCognitoCredentialsProvider.credentialsWithRegionType(kCognitoRegionType, accountId: kAWSAccountID, identityPoolId: kCognitoPoolID, unauthRoleArn: kCognitoRoleUnauth, authRoleArn: kCognitoRoleAuth)
var serviceConfiguration = AWSServiceConfiguration(region: AWSRegionType.APNortheast1, credentialsProvider: credentialsProvider)
AWSServiceManager.defaultServiceManager().setDefaultServiceConfiguration(serviceConfiguration)
var transferManager = AWSS3TransferManager.defaultS3TransferManager()
transferManager.download(downloadRequest)

Any advice is welcome! Thanks!

Did you change the prefix (i.e. endpoint) of your bucket address for the non-US standard buckets in your downloadRequest? — Lyndsey Scott

sudo sudo · Accepted Answer · 2015-08-05T21:50:18

Was having the same issue just recently. The AWS SDK Docs are terribly confusing and contradicting, they suck...

The answer above pointed me in the right direction since I'm using developer authenticated identities, I am using the custom identity provider (same one that's in the sample docs on github). I used registerS3TransferManagerWithConfiguration with the my credentials provider but then supplied AWSRegionUSWest2 as the region for key USWest2S3TransferManager.

I then called AWSS3TransferManager *transferManager = [AWSS3TransferManager S3TransferManagerForKey:@"USWest2S3TransferManager"]; in my upload class.

Hopefully this helps someone else that's having similar issues.

- (AWSTask *)initializeClients:(NSDictionary *)logins {
    NSLog(@"initializing clients...");
    [AWSLogger defaultLogger].logLevel = AWSLogLevelVerbose;

    id<AWSCognitoIdentityProvider> identityProvider = [[DeveloperAuthenticatedIdentityProvider alloc] initWithRegionType:AWSRegionUSEast1
                                                                                                              identityId:nil
                                                                                                          identityPoolId:identityPoolID
                                                                                                                  logins:logins
                                                                                                            providerName:DeveloperAuthProviderName
                                                                                                              authClient:nil];

    self.credentialsProvider = [[AWSCognitoCredentialsProvider alloc] initWithRegionType:AWSRegionUSEast1
                                                                        identityProvider:identityProvider
                                                                           unauthRoleArn:nil
                                                                             authRoleArn:nil];


    AWSServiceConfiguration *configuration = [[AWSServiceConfiguration alloc] initWithRegion:AWSRegionUSEast1 credentialsProvider:self.credentialsProvider];

    [AWSS3TransferManager registerS3TransferManagerWithConfiguration:[[AWSServiceConfiguration alloc] initWithRegion:AWSRegionUSWest2 credentialsProvider:self.credentialsProvider] forKey:@"USWest2S3TransferManager"];

    AWSServiceManager.defaultServiceManager.defaultServiceConfiguration = configuration;

    return [self.credentialsProvider getIdentityId];
}

my specific upload method:

- (void)performS3UploadWithRequest:(AWSS3TransferManagerUploadRequest *)request
{
    AWSS3TransferManager *transferManager = [AWSS3TransferManager S3TransferManagerForKey:@"USWest2S3TransferManager"];
    AWSTask *task = [AWSTask taskWithResult:nil];

    __weak typeof(self) weakSelf = self;
    task = [task continueWithSuccessBlock:^id(AWSTask *task) {
        return [[transferManager upload:request] continueWithBlock:^id(AWSTask *task) {
            if (task.error) {
                [self handleErrorWithTask:task request:request];
            }

            if (task.result) {
                AWSS3TransferManagerUploadOutput *uploadOutput = task.result;
                dispatch_async(dispatch_get_main_queue(), ^{
                    [weakSelf uploadProgress];
                });
                // The file uploaded successfully.
                DLog(@"%@", uploadOutput);
            }

            return nil;
        }];
    }];

    [task continueWithSuccessBlock:^id(AWSTask *task) {
        return nil;
    }];
}

iOS AWS v2 S3 Transfer Manager must use specified endpoint

3 Answers