Resources Cognito Tokens Using Tokens with Identity Providers Verifying a JWT HTTP Headers in WebSockets Client API Is it Secure to Send the Access Token as Part of the WebSocket URL Query Params? Lambda Authorizing the Tokens Using Lambda Authorizers WebGate Wscat How to Call WebSocket API with wscat $Context Mapping Variables (Get Connection ID) WebSocket API Mapping Template Reference API Gateway Mapping Template Reference https://docs.aws.amazon.com/apigateway/latest/developerguide/security_iam_service-with-iam.html Sending Info to Connected Clients Based on Connection ID How to Call WebSocket API Connections Get User Info from Sub List Users API Reference How to Look Up a Cognito User by Their Sub UUID EC2 Send Messages Back To Clients Send Messages Back To Clients Part 2 Examples of Signing() How to get access key Installing Amazon Corretto on Amazon Linux Linux File Transfer using SCP