mirror of
https://github.com/puppeteer/puppeteer
synced 2024-06-14 14:02:48 +00:00
1b2c8113ba
Currently connection assumes that transport is a websocket and tries to handle websocket-related errors. This patch: - moves ConnectionTransport interface to use callbacks instead of events. This way it could be used in browser context as well. - introduces WebSocketTransport that implements ConnectionTransport interface for ws. This is a preparation step for 2 things: - exposing `transport` option in the `puppeteer.connect` method - better support for `browserify` References #2119
75 lines
2.0 KiB
JavaScript
75 lines
2.0 KiB
JavaScript
/**
|
|
* Copyright 2018 Google Inc. All rights reserved.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
const {helper} = require('./helper');
|
|
|
|
/**
|
|
* @implements {!Puppeteer.ConnectionTransport}
|
|
*/
|
|
class PipeTransport {
|
|
/**
|
|
* @param {!NodeJS.WritableStream} pipeWrite
|
|
* @param {!NodeJS.ReadableStream} pipeRead
|
|
*/
|
|
constructor(pipeWrite, pipeRead) {
|
|
this._pipeWrite = pipeWrite;
|
|
this._pendingMessage = '';
|
|
this._eventListeners = [
|
|
helper.addEventListener(pipeRead, 'data', buffer => this._dispatch(buffer))
|
|
];
|
|
this.onmessage = null;
|
|
this.onclose = null;
|
|
}
|
|
|
|
/**
|
|
* @param {string} message
|
|
*/
|
|
send(message) {
|
|
this._pipeWrite.write(message);
|
|
this._pipeWrite.write('\0');
|
|
}
|
|
|
|
/**
|
|
* @param {!Buffer} buffer
|
|
*/
|
|
_dispatch(buffer) {
|
|
let end = buffer.indexOf('\0');
|
|
if (end === -1) {
|
|
this._pendingMessage += buffer.toString();
|
|
return;
|
|
}
|
|
const message = this._pendingMessage + buffer.toString(undefined, 0, end);
|
|
if (this.onmessage)
|
|
this.onmessage.call(null, message);
|
|
|
|
let start = end + 1;
|
|
end = buffer.indexOf('\0', start);
|
|
while (end !== -1) {
|
|
if (this.onmessage)
|
|
this.onmessage.call(null, buffer.toString(undefined, start, end));
|
|
start = end + 1;
|
|
end = buffer.indexOf('\0', start);
|
|
}
|
|
this._pendingMessage = buffer.toString(undefined, start);
|
|
}
|
|
|
|
close() {
|
|
this._pipeWrite = null;
|
|
helper.removeEventListeners(this._eventListeners);
|
|
}
|
|
}
|
|
|
|
module.exports = PipeTransport;
|