Release: AWS SDK for iOS 1.2.2

Release Notes>SDKs>Release: AWS SDK for iOS 1.2.2
This release adds support for the Amazon DynamoDB batchWrite operation and uses AWS Signature Version 4 for AWS Security Token Service.


Submitted By: Yosuke@AWS
Latest Version: 1.2.2
Created On: January 1, 1970 12:00 AM GMT
Last Updated: April 19, 2012 9:44 PM GMT


Download the AWS SDK for iOS 1.2.2

New Features

Change Description
Amazon DynamoDB API Update

This API update adds support for the batchWrite operation.

AWS Signature Version 4 for AWS Security Token Service

We have released a new version of the protocol for authenticating inbound API requests to AWS Services. The new protocol, Signature Version 4, will enable AWS to support future growth and evolution of the AWS business. It introduces a specialized signing key, derived from the long-term AWS Access Key, which is used for the cryptographic signature. It also features incremental modifications in the canonicalization algorithm that streamline signature verification.

This release of the AWS SDK for iOS uses Signature Version 4 for the AWS Security Token Service.

For more information about AWS Signature Version 4, go to Signature Version 4 Signing Process in the AWS General Reference.

Supported API Versions

This release of the SDK supports the following API versions:

Service API Version
Amazon CloudWatch 2010-08-01
Amazon DynamoDB 2011-12-05
Amazon Elastic Compute Cloud (EC2) 2012-03-01
Amazon Simple Email Service (SES) 2010-12-01
Amazon Simple Notification Service (SNS) 2010-03-31
Amazon Simple Queue Service 2011-10-01
Amazon Simple Storage Service (S3) 2006-03-01
Amazon SimpleDB 2009-04-15
Auto Scaling 2011-01-01
AWS Security Token Service 2011-06-15
Elastic Load Balancing 2011-11-15

Known Issues

Issue Description
AmazonLogger usage with iOS5.1

There is a known issue with the AmazonLogger in "verbose mode" in iOS5.1 with release builds (AdHoc/AppStore distributions). The latest version of AWS SDK for iOS has a fix and we recommend including the following code segment to prevent your app from crashing:

            #ifdef DEBUG
                [AmazonLogger verboseLogging];
                [AmazonLogger turnLoggingOff];

Amazon S3 over 3G Uploading large objects to Amazon S3 using 3G can fail frequently. Upgrading your iOS device to v4.3 helps reduce the failure rate. We are actively working with Apple to find a resolution to this problem.
Amazon S3 client does not work around known Amazon S3 issues. The Amazon S3 library does not currently work around two known issues with the Amazon S3 API:
  • Bucket names can include '+' symbols in the name, but the '+' symbol does not get replaced in URL encodings and can result in spaces in bucket names instead.
  • It is possible to create an object with a key which includes characters that are not valid XML characters, which will cause an error in the response to the AmazonS3Client listObjects method. Refer to for guidelines on Amazon S3 keys.
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