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Websocket Client utility makes it easier to test LCA/Agent Assist using a call recording. Websocket client utility reads call recording in WAV file format (stereo) and streams the audio data to the websocket server.

How to use

The websocket client can be run from a local command line (such MacOs terminal) or from Cloud9/Cloud Shell command line. This command line environmentshould have access to AWS resources.

To get started, cd to utilities/websocket-client directory in LCA repo.

  1. Setup the package dependencies (first time you run the utility)

    npm run setup

  2. Build and check for build errors (optional, but recommended whenever you make changes)

    npm run build

  3. Update following environment variables (export them or update them in .env file)

    SAMPLE_RATE=8000

    BYTES_PER_SAMPLE=2

    CHUNK_SIZE_IN_MS=200

    CALL_FROM_NUMBER='LCA-Client'

    CALL_TO_NUMBER='+8001112222'

    AGENT_ID='BabuS'

    LCA_JWT_TOKEN=

    Get the LCA_JWT_TOKEN from your LCA Cognito credentials.

  4. Run the websocket client using npm run command

    npm run start -- --uri <<Websocket Server Endpoint>> --wavfile <<wav file name>>

     `Websocket Server Endpoint` - obtain this from the "Outputs" section of LCA cloudformation console.