when if connectExisting passed to driver then args shouldn't include websocketPort

[b68h4]

./geckodriver: error: the argument '--websocket-port <PORT>' cannot be used with '--connect-existing'

If connectExisting and websocketPort passed same time to geckodriver cause crash because driver can't initialize websocket socket on existing browser

It's a minimal fix. I'm open to typo commits or other suggestions

[christian-bromann]

I am not sure if it is a good idea to just omit the parameter. I would be open to throw a better error message to help the user understand why both parameters can not be set together.

[b68h4]

I am not sure if it is a good idea to just omit the parameter. I would be open to throw a better error message to help the user understand why both parameters can not be set together.

I pushed new version of fix

[christian-bromann]

How is this now different from the current behavior? In both cases it would fail with an error warning saying that these two parameters can not be used together, right?

[b68h4]

How is this now different from the current behavior? In both cases it would fail with an error warning saying that these two parameters can not be used together, right?

No, if 2 parameters are given at the same time, an error is given, but if 2 parameters are not given, it automatically assigns 0 to the websocketPort. The problem was that even if connectExisting was given, geckodriver was crashing because 0 was assigned to the websocketPort.

This is a throws an error for existing browser connection:

const geckoDri = await start({
connectExisting:true,
websocketPort: 5961,
marionettePort: 5960,
port: 5959,
});

Or (problem is here):

const geckoDri = await start({
connectExisting:true,
marionettePort: 5960,
port: 5959,
});

It is a right usage for new browser launching:

const geckoDri = await start({
websocketPort: 5961,
marionettePort: 5960,
port: 5959,
})

If you connecting to existing browser, library shouldnt pass automatically websocketPort 0

[christian-bromann]

Thanks for clarifying and providing the patch

LGTM 👍

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