webRequest.StreamFilter.disconnect()

Disconnects the filter from the request. After this, the browser will continue to process the response, but no more filter events will fire, and no more filter function calls will have any effect. Note the difference between this function and close(). With disconnect(), the browser will continue to process any further response data, but it won't be accessible through the filter. With close(), the browser will ignore any response data that hasn't already been passed through to the rendering engine.

You should always call disconnect() or close() once you don't need to interact with the response any further.

You can't call this function until after the onstart event has fired.

Syntax

filter.disconnect()

Parameters

None.

Return value

None.

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
disconnect
No
No
57
?
No
No
?
?
57
?
?
?

Examples

This example will prepend "preface text" to the response body. It then disconnects, so the original response body will load normally:

function listener(details) {
  let filter = browser.webRequest.filterResponseData(details.requestId);

  filter.onstart = event => {
    console.log("started");
    let encoder = new TextEncoder();
    filter.write(encoder.encode("preface text"));
    filter.disconnect();
  }
}

browser.webRequest.onBeforeRequest.addListener(
  listener,
  {urls: ["https://example.org/"], types: ["main_frame"]},
  ["blocking"]
);

© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/webRequest/StreamFilter/disconnect