browser.pages() does not return pages that weren't created directly by the crate but that are visible in CDP

[steve-the-crab]

If I connect() to an existing Chromium instance with one or more already open tabs, calling browser.pages() returns an empty vector instead of listing the open tabs which are visible via CDP at http://localhost:9222/json.

I don't know if this is intended behaviour but it somewhat negates the usefulness of connecting to an existing instance I believe.

It can be reproduced as so:

Launch chrome with remote debugging enabled, for example:

$ google-chrome-stable --remote-debugging-port=9222

Connect and list the pages:

let url = "ws://localhost:9222/devtools/browser/{some id}";

// browser/handler
let (mut browser, mut handler) = Browser::connect(url).await.unwrap();

// spawn a new task that continuously polls the handler
let handle = tokio::task::spawn(async move {
    while let Some(h) = handler.next().await {
        if h.is_err() {
            break;
        }
    }
});

// list pages
let pages = browser.pages().await;
let pages = pages.unwrap_or_default();
println!("{:?}", pages); 
// --> an empty vec

let page = browser.new_page("https://example.com").await;
let pages = browser.pages().await;
let pages = pages.unwrap_or_default();
println!("{:?}", pages);  
// --> a vec containing the example.com page

[hackermondev]

#187 should fix this

[steve-the-crab]

Nice!