devtools.network.onRequestFinished 编辑

Fired when a network request has finished and its details are available to the extension.

The request is given as a HAR entry object, which is also given an asynchronous getContent() method that gets the response body content.

Note that although your extension can add a listener at any time, it will only start firing after the user has activated the browser's network panel at least once.

Syntax

browser.devtools.network.onRequestFinished.addListener(listener)
browser.devtools.network.onRequestFinished.removeListener(listener)
browser.devtools.network.onRequestFinished.hasListener(listener)

Events have three functions:

addListener(listener)

Adds a listener to this event.

removeListener(listener)

Stop listening to this event. The listener argument is the listener to remove.

hasListener(listener)

Check whether listener is registered for this event. Returns true if it is listening, false otherwise.

addListener syntax

Parameters

callback

Function that will be called when this event occurs. The function will be passed the following arguments:

request

object. An object representing the request. This object is a single HAR entry object. It also defines an asynchronous getContent() method, which returns a Promise that resolves with an array of two elements. The first element is the HTTP response body as a string, while the second element is the MIME type of the HTTP response also as a string.

Browser compatibility

BCD tables only load in the browser

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Examples

Add a listener that logs the server IP address and response body for every network request.

function handleRequestFinished(request) {
  console.log("Server IP: ", request.serverIPAddress);
  request.getContent().then(([content, mimeType]) => {
    console.log("Content: ", content);
    console.log("MIME type: ", mimeType);
  });
}

browser.devtools.network.onRequestFinished.addListener(handleRequestFinished);

This API is based on Chromium's chrome.devtools API.

// Copyright 2015 The Chromium Authors. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//    * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//    * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//    * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.