Icard/angular-clarity-master(work.../node_modules/undici/lib/dispatcher/client-h1.js

1353 lines
36 KiB
JavaScript

'use strict'
/* global WebAssembly */
const assert = require('node:assert')
const util = require('../core/util.js')
const { channels } = require('../core/diagnostics.js')
const timers = require('../util/timers.js')
const {
RequestContentLengthMismatchError,
ResponseContentLengthMismatchError,
RequestAbortedError,
HeadersTimeoutError,
HeadersOverflowError,
SocketError,
InformationalError,
BodyTimeoutError,
HTTPParserError,
ResponseExceededMaxSizeError
} = require('../core/errors.js')
const {
kUrl,
kReset,
kClient,
kParser,
kBlocking,
kRunning,
kPending,
kSize,
kWriting,
kQueue,
kNoRef,
kKeepAliveDefaultTimeout,
kHostHeader,
kPendingIdx,
kRunningIdx,
kError,
kPipelining,
kSocket,
kKeepAliveTimeoutValue,
kMaxHeadersSize,
kKeepAliveMaxTimeout,
kKeepAliveTimeoutThreshold,
kHeadersTimeout,
kBodyTimeout,
kStrictContentLength,
kMaxRequests,
kCounter,
kMaxResponseSize,
kListeners,
kOnError,
kResume,
kHTTPContext
} = require('../core/symbols.js')
const constants = require('../llhttp/constants.js')
const EMPTY_BUF = Buffer.alloc(0)
const FastBuffer = Buffer[Symbol.species]
let extractBody
function addListener (obj, name, listener) {
const listeners = (obj[kListeners] ??= [])
listeners.push([name, listener])
obj.on(name, listener)
return obj
}
function removeAllListeners (obj) {
for (const [name, listener] of obj[kListeners] ?? []) {
obj.removeListener(name, listener)
}
obj[kListeners] = null
}
async function lazyllhttp () {
const llhttpWasmData = process.env.JEST_WORKER_ID ? require('../llhttp/llhttp-wasm.js') : undefined
let mod
try {
mod = await WebAssembly.compile(require('../llhttp/llhttp_simd-wasm.js'))
} catch (e) {
/* istanbul ignore next */
// We could check if the error was caused by the simd option not
// being enabled, but the occurring of this other error
// * https://github.com/emscripten-core/emscripten/issues/11495
// got me to remove that check to avoid breaking Node 12.
mod = await WebAssembly.compile(llhttpWasmData || require('../llhttp/llhttp-wasm.js'))
}
return await WebAssembly.instantiate(mod, {
env: {
/* eslint-disable camelcase */
wasm_on_url: (p, at, len) => {
/* istanbul ignore next */
return 0
},
wasm_on_status: (p, at, len) => {
assert.strictEqual(currentParser.ptr, p)
const start = at - currentBufferPtr + currentBufferRef.byteOffset
return currentParser.onStatus(new FastBuffer(currentBufferRef.buffer, start, len)) || 0
},
wasm_on_message_begin: (p) => {
assert.strictEqual(currentParser.ptr, p)
return currentParser.onMessageBegin() || 0
},
wasm_on_header_field: (p, at, len) => {
assert.strictEqual(currentParser.ptr, p)
const start = at - currentBufferPtr + currentBufferRef.byteOffset
return currentParser.onHeaderField(new FastBuffer(currentBufferRef.buffer, start, len)) || 0
},
wasm_on_header_value: (p, at, len) => {
assert.strictEqual(currentParser.ptr, p)
const start = at - currentBufferPtr + currentBufferRef.byteOffset
return currentParser.onHeaderValue(new FastBuffer(currentBufferRef.buffer, start, len)) || 0
},
wasm_on_headers_complete: (p, statusCode, upgrade, shouldKeepAlive) => {
assert.strictEqual(currentParser.ptr, p)
return currentParser.onHeadersComplete(statusCode, Boolean(upgrade), Boolean(shouldKeepAlive)) || 0
},
wasm_on_body: (p, at, len) => {
assert.strictEqual(currentParser.ptr, p)
const start = at - currentBufferPtr + currentBufferRef.byteOffset
return currentParser.onBody(new FastBuffer(currentBufferRef.buffer, start, len)) || 0
},
wasm_on_message_complete: (p) => {
assert.strictEqual(currentParser.ptr, p)
return currentParser.onMessageComplete() || 0
}
/* eslint-enable camelcase */
}
})
}
let llhttpInstance = null
let llhttpPromise = lazyllhttp()
llhttpPromise.catch()
let currentParser = null
let currentBufferRef = null
let currentBufferSize = 0
let currentBufferPtr = null
const TIMEOUT_HEADERS = 1
const TIMEOUT_BODY = 2
const TIMEOUT_IDLE = 3
class Parser {
constructor (client, socket, { exports }) {
assert(Number.isFinite(client[kMaxHeadersSize]) && client[kMaxHeadersSize] > 0)
this.llhttp = exports
this.ptr = this.llhttp.llhttp_alloc(constants.TYPE.RESPONSE)
this.client = client
this.socket = socket
this.timeout = null
this.timeoutValue = null
this.timeoutType = null
this.statusCode = null
this.statusText = ''
this.upgrade = false
this.headers = []
this.headersSize = 0
this.headersMaxSize = client[kMaxHeadersSize]
this.shouldKeepAlive = false
this.paused = false
this.resume = this.resume.bind(this)
this.bytesRead = 0
this.keepAlive = ''
this.contentLength = ''
this.connection = ''
this.maxResponseSize = client[kMaxResponseSize]
}
setTimeout (value, type) {
this.timeoutType = type
if (value !== this.timeoutValue) {
timers.clearTimeout(this.timeout)
if (value) {
this.timeout = timers.setTimeout(onParserTimeout, value, this)
// istanbul ignore else: only for jest
if (this.timeout.unref) {
this.timeout.unref()
}
} else {
this.timeout = null
}
this.timeoutValue = value
} else if (this.timeout) {
// istanbul ignore else: only for jest
if (this.timeout.refresh) {
this.timeout.refresh()
}
}
}
resume () {
if (this.socket.destroyed || !this.paused) {
return
}
assert(this.ptr != null)
assert(currentParser == null)
this.llhttp.llhttp_resume(this.ptr)
assert(this.timeoutType === TIMEOUT_BODY)
if (this.timeout) {
// istanbul ignore else: only for jest
if (this.timeout.refresh) {
this.timeout.refresh()
}
}
this.paused = false
this.execute(this.socket.read() || EMPTY_BUF) // Flush parser.
this.readMore()
}
readMore () {
while (!this.paused && this.ptr) {
const chunk = this.socket.read()
if (chunk === null) {
break
}
this.execute(chunk)
}
}
execute (data) {
assert(this.ptr != null)
assert(currentParser == null)
assert(!this.paused)
const { socket, llhttp } = this
if (data.length > currentBufferSize) {
if (currentBufferPtr) {
llhttp.free(currentBufferPtr)
}
currentBufferSize = Math.ceil(data.length / 4096) * 4096
currentBufferPtr = llhttp.malloc(currentBufferSize)
}
new Uint8Array(llhttp.memory.buffer, currentBufferPtr, currentBufferSize).set(data)
// Call `execute` on the wasm parser.
// We pass the `llhttp_parser` pointer address, the pointer address of buffer view data,
// and finally the length of bytes to parse.
// The return value is an error code or `constants.ERROR.OK`.
try {
let ret
try {
currentBufferRef = data
currentParser = this
ret = llhttp.llhttp_execute(this.ptr, currentBufferPtr, data.length)
/* eslint-disable-next-line no-useless-catch */
} catch (err) {
/* istanbul ignore next: difficult to make a test case for */
throw err
} finally {
currentParser = null
currentBufferRef = null
}
const offset = llhttp.llhttp_get_error_pos(this.ptr) - currentBufferPtr
if (ret === constants.ERROR.PAUSED_UPGRADE) {
this.onUpgrade(data.slice(offset))
} else if (ret === constants.ERROR.PAUSED) {
this.paused = true
socket.unshift(data.slice(offset))
} else if (ret !== constants.ERROR.OK) {
const ptr = llhttp.llhttp_get_error_reason(this.ptr)
let message = ''
/* istanbul ignore else: difficult to make a test case for */
if (ptr) {
const len = new Uint8Array(llhttp.memory.buffer, ptr).indexOf(0)
message =
'Response does not match the HTTP/1.1 protocol (' +
Buffer.from(llhttp.memory.buffer, ptr, len).toString() +
')'
}
throw new HTTPParserError(message, constants.ERROR[ret], data.slice(offset))
}
} catch (err) {
util.destroy(socket, err)
}
}
destroy () {
assert(this.ptr != null)
assert(currentParser == null)
this.llhttp.llhttp_free(this.ptr)
this.ptr = null
timers.clearTimeout(this.timeout)
this.timeout = null
this.timeoutValue = null
this.timeoutType = null
this.paused = false
}
onStatus (buf) {
this.statusText = buf.toString()
}
onMessageBegin () {
const { socket, client } = this
/* istanbul ignore next: difficult to make a test case for */
if (socket.destroyed) {
return -1
}
const request = client[kQueue][client[kRunningIdx]]
if (!request) {
return -1
}
request.onResponseStarted()
}
onHeaderField (buf) {
const len = this.headers.length
if ((len & 1) === 0) {
this.headers.push(buf)
} else {
this.headers[len - 1] = Buffer.concat([this.headers[len - 1], buf])
}
this.trackHeader(buf.length)
}
onHeaderValue (buf) {
let len = this.headers.length
if ((len & 1) === 1) {
this.headers.push(buf)
len += 1
} else {
this.headers[len - 1] = Buffer.concat([this.headers[len - 1], buf])
}
const key = this.headers[len - 2]
if (key.length === 10) {
const headerName = util.bufferToLowerCasedHeaderName(key)
if (headerName === 'keep-alive') {
this.keepAlive += buf.toString()
} else if (headerName === 'connection') {
this.connection += buf.toString()
}
} else if (key.length === 14 && util.bufferToLowerCasedHeaderName(key) === 'content-length') {
this.contentLength += buf.toString()
}
this.trackHeader(buf.length)
}
trackHeader (len) {
this.headersSize += len
if (this.headersSize >= this.headersMaxSize) {
util.destroy(this.socket, new HeadersOverflowError())
}
}
onUpgrade (head) {
const { upgrade, client, socket, headers, statusCode } = this
assert(upgrade)
const request = client[kQueue][client[kRunningIdx]]
assert(request)
assert(!socket.destroyed)
assert(socket === client[kSocket])
assert(!this.paused)
assert(request.upgrade || request.method === 'CONNECT')
this.statusCode = null
this.statusText = ''
this.shouldKeepAlive = null
assert(this.headers.length % 2 === 0)
this.headers = []
this.headersSize = 0
socket.unshift(head)
socket[kParser].destroy()
socket[kParser] = null
socket[kClient] = null
socket[kError] = null
removeAllListeners(socket)
client[kSocket] = null
client[kHTTPContext] = null // TODO (fix): This is hacky...
client[kQueue][client[kRunningIdx]++] = null
client.emit('disconnect', client[kUrl], [client], new InformationalError('upgrade'))
try {
request.onUpgrade(statusCode, headers, socket)
} catch (err) {
util.destroy(socket, err)
}
client[kResume]()
}
onHeadersComplete (statusCode, upgrade, shouldKeepAlive) {
const { client, socket, headers, statusText } = this
/* istanbul ignore next: difficult to make a test case for */
if (socket.destroyed) {
return -1
}
const request = client[kQueue][client[kRunningIdx]]
/* istanbul ignore next: difficult to make a test case for */
if (!request) {
return -1
}
assert(!this.upgrade)
assert(this.statusCode < 200)
if (statusCode === 100) {
util.destroy(socket, new SocketError('bad response', util.getSocketInfo(socket)))
return -1
}
/* this can only happen if server is misbehaving */
if (upgrade && !request.upgrade) {
util.destroy(socket, new SocketError('bad upgrade', util.getSocketInfo(socket)))
return -1
}
assert.strictEqual(this.timeoutType, TIMEOUT_HEADERS)
this.statusCode = statusCode
this.shouldKeepAlive = (
shouldKeepAlive ||
// Override llhttp value which does not allow keepAlive for HEAD.
(request.method === 'HEAD' && !socket[kReset] && this.connection.toLowerCase() === 'keep-alive')
)
if (this.statusCode >= 200) {
const bodyTimeout = request.bodyTimeout != null
? request.bodyTimeout
: client[kBodyTimeout]
this.setTimeout(bodyTimeout, TIMEOUT_BODY)
} else if (this.timeout) {
// istanbul ignore else: only for jest
if (this.timeout.refresh) {
this.timeout.refresh()
}
}
if (request.method === 'CONNECT') {
assert(client[kRunning] === 1)
this.upgrade = true
return 2
}
if (upgrade) {
assert(client[kRunning] === 1)
this.upgrade = true
return 2
}
assert(this.headers.length % 2 === 0)
this.headers = []
this.headersSize = 0
if (this.shouldKeepAlive && client[kPipelining]) {
const keepAliveTimeout = this.keepAlive ? util.parseKeepAliveTimeout(this.keepAlive) : null
if (keepAliveTimeout != null) {
const timeout = Math.min(
keepAliveTimeout - client[kKeepAliveTimeoutThreshold],
client[kKeepAliveMaxTimeout]
)
if (timeout <= 0) {
socket[kReset] = true
} else {
client[kKeepAliveTimeoutValue] = timeout
}
} else {
client[kKeepAliveTimeoutValue] = client[kKeepAliveDefaultTimeout]
}
} else {
// Stop more requests from being dispatched.
socket[kReset] = true
}
const pause = request.onHeaders(statusCode, headers, this.resume, statusText) === false
if (request.aborted) {
return -1
}
if (request.method === 'HEAD') {
return 1
}
if (statusCode < 200) {
return 1
}
if (socket[kBlocking]) {
socket[kBlocking] = false
client[kResume]()
}
return pause ? constants.ERROR.PAUSED : 0
}
onBody (buf) {
const { client, socket, statusCode, maxResponseSize } = this
if (socket.destroyed) {
return -1
}
const request = client[kQueue][client[kRunningIdx]]
assert(request)
assert.strictEqual(this.timeoutType, TIMEOUT_BODY)
if (this.timeout) {
// istanbul ignore else: only for jest
if (this.timeout.refresh) {
this.timeout.refresh()
}
}
assert(statusCode >= 200)
if (maxResponseSize > -1 && this.bytesRead + buf.length > maxResponseSize) {
util.destroy(socket, new ResponseExceededMaxSizeError())
return -1
}
this.bytesRead += buf.length
if (request.onData(buf) === false) {
return constants.ERROR.PAUSED
}
}
onMessageComplete () {
const { client, socket, statusCode, upgrade, headers, contentLength, bytesRead, shouldKeepAlive } = this
if (socket.destroyed && (!statusCode || shouldKeepAlive)) {
return -1
}
if (upgrade) {
return
}
const request = client[kQueue][client[kRunningIdx]]
assert(request)
assert(statusCode >= 100)
this.statusCode = null
this.statusText = ''
this.bytesRead = 0
this.contentLength = ''
this.keepAlive = ''
this.connection = ''
assert(this.headers.length % 2 === 0)
this.headers = []
this.headersSize = 0
if (statusCode < 200) {
return
}
/* istanbul ignore next: should be handled by llhttp? */
if (request.method !== 'HEAD' && contentLength && bytesRead !== parseInt(contentLength, 10)) {
util.destroy(socket, new ResponseContentLengthMismatchError())
return -1
}
request.onComplete(headers)
client[kQueue][client[kRunningIdx]++] = null
if (socket[kWriting]) {
assert.strictEqual(client[kRunning], 0)
// Response completed before request.
util.destroy(socket, new InformationalError('reset'))
return constants.ERROR.PAUSED
} else if (!shouldKeepAlive) {
util.destroy(socket, new InformationalError('reset'))
return constants.ERROR.PAUSED
} else if (socket[kReset] && client[kRunning] === 0) {
// Destroy socket once all requests have completed.
// The request at the tail of the pipeline is the one
// that requested reset and no further requests should
// have been queued since then.
util.destroy(socket, new InformationalError('reset'))
return constants.ERROR.PAUSED
} else if (client[kPipelining] == null || client[kPipelining] === 1) {
// We must wait a full event loop cycle to reuse this socket to make sure
// that non-spec compliant servers are not closing the connection even if they
// said they won't.
setImmediate(() => client[kResume]())
} else {
client[kResume]()
}
}
}
function onParserTimeout (parser) {
const { socket, timeoutType, client } = parser
/* istanbul ignore else */
if (timeoutType === TIMEOUT_HEADERS) {
if (!socket[kWriting] || socket.writableNeedDrain || client[kRunning] > 1) {
assert(!parser.paused, 'cannot be paused while waiting for headers')
util.destroy(socket, new HeadersTimeoutError())
}
} else if (timeoutType === TIMEOUT_BODY) {
if (!parser.paused) {
util.destroy(socket, new BodyTimeoutError())
}
} else if (timeoutType === TIMEOUT_IDLE) {
assert(client[kRunning] === 0 && client[kKeepAliveTimeoutValue])
util.destroy(socket, new InformationalError('socket idle timeout'))
}
}
async function connectH1 (client, socket) {
client[kSocket] = socket
if (!llhttpInstance) {
llhttpInstance = await llhttpPromise
llhttpPromise = null
}
socket[kNoRef] = false
socket[kWriting] = false
socket[kReset] = false
socket[kBlocking] = false
socket[kParser] = new Parser(client, socket, llhttpInstance)
addListener(socket, 'error', function (err) {
const parser = this[kParser]
assert(err.code !== 'ERR_TLS_CERT_ALTNAME_INVALID')
// On Mac OS, we get an ECONNRESET even if there is a full body to be forwarded
// to the user.
if (err.code === 'ECONNRESET' && parser.statusCode && !parser.shouldKeepAlive) {
// We treat all incoming data so for as a valid response.
parser.onMessageComplete()
return
}
this[kError] = err
this[kClient][kOnError](err)
})
addListener(socket, 'readable', function () {
const parser = this[kParser]
if (parser) {
parser.readMore()
}
})
addListener(socket, 'end', function () {
const parser = this[kParser]
if (parser.statusCode && !parser.shouldKeepAlive) {
// We treat all incoming data so far as a valid response.
parser.onMessageComplete()
return
}
util.destroy(this, new SocketError('other side closed', util.getSocketInfo(this)))
})
addListener(socket, 'close', function () {
const client = this[kClient]
const parser = this[kParser]
if (parser) {
if (!this[kError] && parser.statusCode && !parser.shouldKeepAlive) {
// We treat all incoming data so far as a valid response.
parser.onMessageComplete()
}
this[kParser].destroy()
this[kParser] = null
}
const err = this[kError] || new SocketError('closed', util.getSocketInfo(this))
client[kSocket] = null
client[kHTTPContext] = null // TODO (fix): This is hacky...
if (client.destroyed) {
assert(client[kPending] === 0)
// Fail entire queue.
const requests = client[kQueue].splice(client[kRunningIdx])
for (let i = 0; i < requests.length; i++) {
const request = requests[i]
errorRequest(client, request, err)
}
} else if (client[kRunning] > 0 && err.code !== 'UND_ERR_INFO') {
// Fail head of pipeline.
const request = client[kQueue][client[kRunningIdx]]
client[kQueue][client[kRunningIdx]++] = null
errorRequest(client, request, err)
}
client[kPendingIdx] = client[kRunningIdx]
assert(client[kRunning] === 0)
client.emit('disconnect', client[kUrl], [client], err)
client[kResume]()
})
let closed = false
socket.on('close', () => {
closed = true
})
return {
version: 'h1',
defaultPipelining: 1,
write (...args) {
return writeH1(client, ...args)
},
resume () {
resumeH1(client)
},
destroy (err, callback) {
if (closed) {
queueMicrotask(callback)
} else {
socket.destroy(err).on('close', callback)
}
},
get destroyed () {
return socket.destroyed
},
busy (request) {
if (socket[kWriting] || socket[kReset] || socket[kBlocking]) {
return true
}
if (request) {
if (client[kRunning] > 0 && !request.idempotent) {
// Non-idempotent request cannot be retried.
// Ensure that no other requests are inflight and
// could cause failure.
return true
}
if (client[kRunning] > 0 && (request.upgrade || request.method === 'CONNECT')) {
// Don't dispatch an upgrade until all preceding requests have completed.
// A misbehaving server might upgrade the connection before all pipelined
// request has completed.
return true
}
if (client[kRunning] > 0 && util.bodyLength(request.body) !== 0 &&
(util.isStream(request.body) || util.isAsyncIterable(request.body) || util.isFormDataLike(request.body))) {
// Request with stream or iterator body can error while other requests
// are inflight and indirectly error those as well.
// Ensure this doesn't happen by waiting for inflight
// to complete before dispatching.
// Request with stream or iterator body cannot be retried.
// Ensure that no other requests are inflight and
// could cause failure.
return true
}
}
return false
}
}
}
function resumeH1 (client) {
const socket = client[kSocket]
if (socket && !socket.destroyed) {
if (client[kSize] === 0) {
if (!socket[kNoRef] && socket.unref) {
socket.unref()
socket[kNoRef] = true
}
} else if (socket[kNoRef] && socket.ref) {
socket.ref()
socket[kNoRef] = false
}
if (client[kSize] === 0) {
if (socket[kParser].timeoutType !== TIMEOUT_IDLE) {
socket[kParser].setTimeout(client[kKeepAliveTimeoutValue], TIMEOUT_IDLE)
}
} else if (client[kRunning] > 0 && socket[kParser].statusCode < 200) {
if (socket[kParser].timeoutType !== TIMEOUT_HEADERS) {
const request = client[kQueue][client[kRunningIdx]]
const headersTimeout = request.headersTimeout != null
? request.headersTimeout
: client[kHeadersTimeout]
socket[kParser].setTimeout(headersTimeout, TIMEOUT_HEADERS)
}
}
}
}
function errorRequest (client, request, err) {
try {
request.onError(err)
assert(request.aborted)
} catch (err) {
client.emit('error', err)
}
}
// https://www.rfc-editor.org/rfc/rfc7230#section-3.3.2
function shouldSendContentLength (method) {
return method !== 'GET' && method !== 'HEAD' && method !== 'OPTIONS' && method !== 'TRACE' && method !== 'CONNECT'
}
function writeH1 (client, request) {
const { method, path, host, upgrade, blocking, reset } = request
let { body, headers, contentLength } = request
// https://tools.ietf.org/html/rfc7231#section-4.3.1
// https://tools.ietf.org/html/rfc7231#section-4.3.2
// https://tools.ietf.org/html/rfc7231#section-4.3.5
// Sending a payload body on a request that does not
// expect it can cause undefined behavior on some
// servers and corrupt connection state. Do not
// re-use the connection for further requests.
const expectsPayload = (
method === 'PUT' ||
method === 'POST' ||
method === 'PATCH'
)
if (util.isFormDataLike(body)) {
if (!extractBody) {
extractBody = require('../web/fetch/body.js').extractBody
}
const [bodyStream, contentType] = extractBody(body)
if (request.contentType == null) {
headers.push('content-type', contentType)
}
body = bodyStream.stream
contentLength = bodyStream.length
} else if (util.isBlobLike(body) && request.contentType == null && body.type) {
headers.push('content-type', body.type)
}
if (body && typeof body.read === 'function') {
// Try to read EOF in order to get length.
body.read(0)
}
const bodyLength = util.bodyLength(body)
contentLength = bodyLength ?? contentLength
if (contentLength === null) {
contentLength = request.contentLength
}
if (contentLength === 0 && !expectsPayload) {
// https://tools.ietf.org/html/rfc7230#section-3.3.2
// A user agent SHOULD NOT send a Content-Length header field when
// the request message does not contain a payload body and the method
// semantics do not anticipate such a body.
contentLength = null
}
// https://github.com/nodejs/undici/issues/2046
// A user agent may send a Content-Length header with 0 value, this should be allowed.
if (shouldSendContentLength(method) && contentLength > 0 && request.contentLength !== null && request.contentLength !== contentLength) {
if (client[kStrictContentLength]) {
errorRequest(client, request, new RequestContentLengthMismatchError())
return false
}
process.emitWarning(new RequestContentLengthMismatchError())
}
const socket = client[kSocket]
try {
request.onConnect((err) => {
if (request.aborted || request.completed) {
return
}
errorRequest(client, request, err || new RequestAbortedError())
util.destroy(socket, new InformationalError('aborted'))
})
} catch (err) {
errorRequest(client, request, err)
}
if (request.aborted) {
util.destroy(body)
return false
}
if (method === 'HEAD') {
// https://github.com/mcollina/undici/issues/258
// Close after a HEAD request to interop with misbehaving servers
// that may send a body in the response.
socket[kReset] = true
}
if (upgrade || method === 'CONNECT') {
// On CONNECT or upgrade, block pipeline from dispatching further
// requests on this connection.
socket[kReset] = true
}
if (reset != null) {
socket[kReset] = reset
}
if (client[kMaxRequests] && socket[kCounter]++ >= client[kMaxRequests]) {
socket[kReset] = true
}
if (blocking) {
socket[kBlocking] = true
}
let header = `${method} ${path} HTTP/1.1\r\n`
if (typeof host === 'string') {
header += `host: ${host}\r\n`
} else {
header += client[kHostHeader]
}
if (upgrade) {
header += `connection: upgrade\r\nupgrade: ${upgrade}\r\n`
} else if (client[kPipelining] && !socket[kReset]) {
header += 'connection: keep-alive\r\n'
} else {
header += 'connection: close\r\n'
}
if (Array.isArray(headers)) {
for (let n = 0; n < headers.length; n += 2) {
const key = headers[n + 0]
const val = headers[n + 1]
if (Array.isArray(val)) {
for (let i = 0; i < val.length; i++) {
header += `${key}: ${val[i]}\r\n`
}
} else {
header += `${key}: ${val}\r\n`
}
}
}
if (channels.sendHeaders.hasSubscribers) {
channels.sendHeaders.publish({ request, headers: header, socket })
}
/* istanbul ignore else: assertion */
if (!body || bodyLength === 0) {
if (contentLength === 0) {
socket.write(`${header}content-length: 0\r\n\r\n`, 'latin1')
} else {
assert(contentLength === null, 'no body must not have content length')
socket.write(`${header}\r\n`, 'latin1')
}
request.onRequestSent()
} else if (util.isBuffer(body)) {
assert(contentLength === body.byteLength, 'buffer body must have content length')
socket.cork()
socket.write(`${header}content-length: ${contentLength}\r\n\r\n`, 'latin1')
socket.write(body)
socket.uncork()
request.onBodySent(body)
request.onRequestSent()
if (!expectsPayload) {
socket[kReset] = true
}
} else if (util.isBlobLike(body)) {
if (typeof body.stream === 'function') {
writeIterable({ body: body.stream(), client, request, socket, contentLength, header, expectsPayload })
} else {
writeBlob({ body, client, request, socket, contentLength, header, expectsPayload })
}
} else if (util.isStream(body)) {
writeStream({ body, client, request, socket, contentLength, header, expectsPayload })
} else if (util.isIterable(body)) {
writeIterable({ body, client, request, socket, contentLength, header, expectsPayload })
} else {
assert(false)
}
return true
}
function writeStream ({ h2stream, body, client, request, socket, contentLength, header, expectsPayload }) {
assert(contentLength !== 0 || client[kRunning] === 0, 'stream body cannot be pipelined')
let finished = false
const writer = new AsyncWriter({ socket, request, contentLength, client, expectsPayload, header })
const onData = function (chunk) {
if (finished) {
return
}
try {
if (!writer.write(chunk) && this.pause) {
this.pause()
}
} catch (err) {
util.destroy(this, err)
}
}
const onDrain = function () {
if (finished) {
return
}
if (body.resume) {
body.resume()
}
}
const onClose = function () {
// 'close' might be emitted *before* 'error' for
// broken streams. Wait a tick to avoid this case.
queueMicrotask(() => {
// It's only safe to remove 'error' listener after
// 'close'.
body.removeListener('error', onFinished)
})
if (!finished) {
const err = new RequestAbortedError()
queueMicrotask(() => onFinished(err))
}
}
const onFinished = function (err) {
if (finished) {
return
}
finished = true
assert(socket.destroyed || (socket[kWriting] && client[kRunning] <= 1))
socket
.off('drain', onDrain)
.off('error', onFinished)
body
.removeListener('data', onData)
.removeListener('end', onFinished)
.removeListener('close', onClose)
if (!err) {
try {
writer.end()
} catch (er) {
err = er
}
}
writer.destroy(err)
if (err && (err.code !== 'UND_ERR_INFO' || err.message !== 'reset')) {
util.destroy(body, err)
} else {
util.destroy(body)
}
}
body
.on('data', onData)
.on('end', onFinished)
.on('error', onFinished)
.on('close', onClose)
if (body.resume) {
body.resume()
}
socket
.on('drain', onDrain)
.on('error', onFinished)
if (body.errorEmitted ?? body.errored) {
setImmediate(() => onFinished(body.errored))
} else if (body.endEmitted ?? body.readableEnded) {
setImmediate(() => onFinished(null))
}
if (body.closeEmitted ?? body.closed) {
setImmediate(onClose)
}
}
async function writeBlob ({ h2stream, body, client, request, socket, contentLength, header, expectsPayload }) {
assert(contentLength === body.size, 'blob body must have content length')
try {
if (contentLength != null && contentLength !== body.size) {
throw new RequestContentLengthMismatchError()
}
const buffer = Buffer.from(await body.arrayBuffer())
socket.cork()
socket.write(`${header}content-length: ${contentLength}\r\n\r\n`, 'latin1')
socket.write(buffer)
socket.uncork()
request.onBodySent(buffer)
request.onRequestSent()
if (!expectsPayload) {
socket[kReset] = true
}
client[kResume]()
} catch (err) {
util.destroy(socket, err)
}
}
async function writeIterable ({ h2stream, body, client, request, socket, contentLength, header, expectsPayload }) {
assert(contentLength !== 0 || client[kRunning] === 0, 'iterator body cannot be pipelined')
let callback = null
function onDrain () {
if (callback) {
const cb = callback
callback = null
cb()
}
}
const waitForDrain = () => new Promise((resolve, reject) => {
assert(callback === null)
if (socket[kError]) {
reject(socket[kError])
} else {
callback = resolve
}
})
socket
.on('close', onDrain)
.on('drain', onDrain)
const writer = new AsyncWriter({ socket, request, contentLength, client, expectsPayload, header })
try {
// It's up to the user to somehow abort the async iterable.
for await (const chunk of body) {
if (socket[kError]) {
throw socket[kError]
}
if (!writer.write(chunk)) {
await waitForDrain()
}
}
writer.end()
} catch (err) {
writer.destroy(err)
} finally {
socket
.off('close', onDrain)
.off('drain', onDrain)
}
}
class AsyncWriter {
constructor ({ socket, request, contentLength, client, expectsPayload, header }) {
this.socket = socket
this.request = request
this.contentLength = contentLength
this.client = client
this.bytesWritten = 0
this.expectsPayload = expectsPayload
this.header = header
socket[kWriting] = true
}
write (chunk) {
const { socket, request, contentLength, client, bytesWritten, expectsPayload, header } = this
if (socket[kError]) {
throw socket[kError]
}
if (socket.destroyed) {
return false
}
const len = Buffer.byteLength(chunk)
if (!len) {
return true
}
// We should defer writing chunks.
if (contentLength !== null && bytesWritten + len > contentLength) {
if (client[kStrictContentLength]) {
throw new RequestContentLengthMismatchError()
}
process.emitWarning(new RequestContentLengthMismatchError())
}
socket.cork()
if (bytesWritten === 0) {
if (!expectsPayload) {
socket[kReset] = true
}
if (contentLength === null) {
socket.write(`${header}transfer-encoding: chunked\r\n`, 'latin1')
} else {
socket.write(`${header}content-length: ${contentLength}\r\n\r\n`, 'latin1')
}
}
if (contentLength === null) {
socket.write(`\r\n${len.toString(16)}\r\n`, 'latin1')
}
this.bytesWritten += len
const ret = socket.write(chunk)
socket.uncork()
request.onBodySent(chunk)
if (!ret) {
if (socket[kParser].timeout && socket[kParser].timeoutType === TIMEOUT_HEADERS) {
// istanbul ignore else: only for jest
if (socket[kParser].timeout.refresh) {
socket[kParser].timeout.refresh()
}
}
}
return ret
}
end () {
const { socket, contentLength, client, bytesWritten, expectsPayload, header, request } = this
request.onRequestSent()
socket[kWriting] = false
if (socket[kError]) {
throw socket[kError]
}
if (socket.destroyed) {
return
}
if (bytesWritten === 0) {
if (expectsPayload) {
// https://tools.ietf.org/html/rfc7230#section-3.3.2
// A user agent SHOULD send a Content-Length in a request message when
// no Transfer-Encoding is sent and the request method defines a meaning
// for an enclosed payload body.
socket.write(`${header}content-length: 0\r\n\r\n`, 'latin1')
} else {
socket.write(`${header}\r\n`, 'latin1')
}
} else if (contentLength === null) {
socket.write('\r\n0\r\n\r\n', 'latin1')
}
if (contentLength !== null && bytesWritten !== contentLength) {
if (client[kStrictContentLength]) {
throw new RequestContentLengthMismatchError()
} else {
process.emitWarning(new RequestContentLengthMismatchError())
}
}
if (socket[kParser].timeout && socket[kParser].timeoutType === TIMEOUT_HEADERS) {
// istanbul ignore else: only for jest
if (socket[kParser].timeout.refresh) {
socket[kParser].timeout.refresh()
}
}
client[kResume]()
}
destroy (err) {
const { socket, client } = this
socket[kWriting] = false
if (err) {
assert(client[kRunning] <= 1, 'pipeline should only contain this request')
util.destroy(socket, err)
}
}
}
module.exports = connectH1