本文整理汇总了TypeScript中stream.PassThrough.once方法的典型用法代码示例。如果您正苦于以下问题：TypeScript PassThrough.once方法的具体用法？TypeScript PassThrough.once怎么用？TypeScript PassThrough.once使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类stream.PassThrough的用法示例。
在下文中一共展示了PassThrough.once方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: Promise
return new Promise((resolve, reject) => {
const arg: any = urlLib.parse(url)
const isHttp = arg.protocol !== 'https:'
const engine: typeof httpRequest = isHttp ? httpRequest : httpsRequest
// Always attach certain options.
arg.method = method
arg.headers = request.toHeaders()
arg.agent = options.agent
arg.rejectUnauthorized = options.rejectUnauthorized !== false
arg.ca = options.ca
arg.cert = options.cert
arg.key = options.key
const req = engine(arg)
// Track upload progress through a stream.
const requestProxy = new PassThrough()
const responseProxy = new PassThrough()
requestProxy.on('data', function (chunk: Buffer) {
request.uploadedBytes = request.uploadedBytes + chunk.length
})
requestProxy.on('end', function () {
request.uploadedBytes = request.uploadLength
})
responseProxy.on('data', function (chunk: Buffer) {
request.downloadedBytes = request.downloadedBytes + chunk.length
})
responseProxy.on('end', function () {
request.downloadedBytes = request.downloadLength
})
// Handle the HTTP response.
function response (res: IncomingMessage) {
const status = res.statusCode
const redirect = REDIRECT_STATUS[status]
// Handle HTTP redirects.
if (followRedirects && redirect != null && res.headers.location) {
const newUrl = urlLib.resolve(url, res.headers.location)
// Ignore the result of the response on redirect.
res.resume()
// Kill the old cookies on redirect.
request.remove('Cookie')
if (redirect === REDIRECT_TYPE.FOLLOW_WITH_GET) {
// Update the "Content-Length" for updated redirection body.
request.set('Content-Length', '0')
return get(newUrl, 'GET')
}
if (redirect === REDIRECT_TYPE.FOLLOW_WITH_CONFIRMATION) {
// Following HTTP spec by automatically redirecting with GET/HEAD.
if (arg.method === 'GET' || arg.method === 'HEAD') {
return get(newUrl, method, body)
}
// Allow the user to confirm redirect according to HTTP spec.
if (confirmRedirect(req, res)) {
return get(newUrl, method, body)
}
}
}
request.downloadLength = num(res.headers['content-length'], 0)
// Track download progress.
res.pipe(responseProxy)
return Promise.resolve({
body: responseProxy,
status: status,
statusText: res.statusMessage,
headers: res.headers,
rawHeaders: res.rawHeaders,
url: url
})
}
// Handle the response.
req.once('response', function (message: IncomingMessage) {
return resolve(setCookies(request, message).then(() => response(message)))
})
// io.js has an abort event instead of "error".
req.once('abort', function () {
return reject(request.error('Request aborted', 'EABORT'))
})
req.once('error', function (error: Error) {
return reject(request.error(`Unable to connect to "${url}"`, 'EUNAVAILABLE', error))
})
//.........这里部分代码省略.........