Server attempts indefinitely to create a session with invalid capabilities

[barancev]

🐛 Bug Report

Server attempts indefinitely to create a session with invalid capabilities

To Reproduce

Start a server and attempt to create a session with invalid capabilities:

FirefoxOptions options = new FirefoxOptions();
options.setCapability("moz:unsupported", "foo");
driver = new RemoteWebDriver(options);

The server tries to start a session, this attempt ends wity a failure, the server puts the request back to the queue and later try again to create a session and so on ad infinem.

Later the client thows SessionNotCreatedException after a timeout, but the server continues its attempts to create a session.

Environment

OS: Win10
Browser: Firefox
Browser version: 83
Browser Driver version: 0.29
Language Bindings version: Java
Selenium Grid version (if applicable): 4.0-alpha-7