[config] timeout for receiving ready from mediator is not recovered

[t2ym]

[config] timeout for receiving ready from mediator is not recovered

Root Cause

• In driver.js, recovery mechanism from a failure of receiving ready from mediator does not work as expected
  • As retryTimeout == mediatorReadyTimeout == 5, no timings of retrying
  • retryTimeout should be way larger than mediatorReadyTimeout
  • mediatorReadyTimeout should be smaller
• It is under investigation where the connect message is lost
  • mediator-worker.js SharedWorker may have failed to receive the connect message
    • possibly due to highly flooded IPC traffic
  • driver.js gives up receiving the message too early

Reproducible Steps

• Perform GUI test on examples/web-dev-server, which is highly loaded
• mediator-bridge.html is opened but does not send ready to the opener app tab
• Error message in the stalled app tab

target-app.js:5 http://127.0.0.7:3000/target-app.js loaded
driver.js:315 Error: DriverState:connecting.timeout: timeout for receiving ready
    at driver.js:309:24
doConnect @ driver.js:315

Fix

• mediatorRetryTimeout 5s -> 1s
• readyTimeout 5s -> 15s

[t2ym]

Remaining problems are handled in other issues