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doctor.ts
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doctor.ts
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/**
* Wechaty Chatbot SDK - https://github.com/wechaty/wechaty
*
* @copyright 2016 Huan LI (李卓桓) <https://github.com/huan>, and
* Wechaty Contributors <https://github.com/wechaty>.
*
* 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.
*
*/
import {
createServer,
Socket,
} from 'net'
import { spawnSync as spawn } from 'child_process'
import {
log,
} from 'wechaty-puppet'
export class Doctor {
constructor () {
log.verbose('Doctor', 'constructor()')
}
public chromedriverVersion (): string {
let version: string
try {
const cmd = spawn('chromedriver', ['--version'])
version = String(cmd.error) || cmd.stdout.toString() || cmd.stderr.toString()
} catch (e) {
version = (e as Error).message
}
return version
}
/**
* https://gist.github.com/tedmiston/5935757
*/
public testTcp (): Promise<boolean> {
log.verbose('Doctor', 'testTcp()')
return new Promise<boolean>((resolve, reject) => {
/**
* Server
*/
const server = createServer(socket => socket.pipe(socket))
/**
* Promise Reject
*/
server.on('error', reject)
server.on('close', () => log.silly('Doctor', 'testTcp() server closed'))
server.listen(8788, 'localhost', () => {
/**
* Client
*/
const client = new Socket()
client.connect(8788, 'localhost', () => {
log.silly('Doctor', 'testTcp() client connected')
client.write('ding')
})
client.on('data', () => {
/**
* Promise Resolve
*/
resolve(true)
client.destroy() // kill client after server's response
})
/**
* Promise Reject
*/
client.on('error', reject)
client.on('close', () => server.close())
})
})
}
}