| Class | Description | 
|---|---|
| AwsIotTlsSocketFactory | 
 This class extends  
SSLSocketFactory to enforce TLS v1.2 to be used
 for SSL sockets created by the library. | 
| AwsIotWebSocketUrlSigner | 
 The AWSIotWebSocketUrlSigner class creates the SigV4 signature and builds a
 connection URL to be used with the Paho MQTT client. 
 | 
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