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denoland-deno/ext/node/polyfills/http.ts

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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// TODO(petamoriken): enable prefer-primordials for node polyfills
// deno-lint-ignore-file prefer-primordials
import { core, primordials } from "ext:core/mod.js";
import {
op_node_http_fetch_response_upgrade,
op_node_http_fetch_send,
op_node_http_request,
} from "ext:core/ops";
import { TextEncoder } from "ext:deno_web/08_text_encoding.js";
import { setTimeout } from "ext:deno_web/02_timers.js";
import {
_normalizeArgs,
// createConnection,
ListenOptions,
Socket,
} from "node:net";
import { Buffer } from "node:buffer";
import { ERR_SERVER_NOT_RUNNING } from "ext:deno_node/internal/errors.ts";
import { EventEmitter } from "node:events";
import { nextTick } from "ext:deno_node/_next_tick.ts";
import {
validateBoolean,
validateInteger,
validateObject,
validatePort,
} from "ext:deno_node/internal/validators.mjs";
import {
addAbortSignal,
Duplex as NodeDuplex,
finished,
Readable as NodeReadable,
Writable as NodeWritable,
WritableOptions as NodeWritableOptions,
} from "node:stream";
import {
kUniqueHeaders,
OutgoingMessage,
parseUniqueHeadersOption,
validateHeaderName,
validateHeaderValue,
} from "node:_http_outgoing";
import { ok as assert } from "node:assert";
import { kOutHeaders } from "ext:deno_node/internal/http.ts";
import { _checkIsHttpToken as checkIsHttpToken } from "node:_http_common";
import { Agent, globalAgent } from "node:_http_agent";
import { urlToHttpOptions } from "ext:deno_node/internal/url.ts";
import { kEmptyObject } from "ext:deno_node/internal/util.mjs";
import { constants, TCP } from "ext:deno_node/internal_binding/tcp_wrap.ts";
import { notImplemented, warnNotImplemented } from "ext:deno_node/_utils.ts";
import {
connResetException,
ERR_HTTP_HEADERS_SENT,
ERR_HTTP_SOCKET_ASSIGNED,
ERR_INVALID_ARG_TYPE,
ERR_INVALID_HTTP_TOKEN,
ERR_INVALID_PROTOCOL,
ERR_UNESCAPED_CHARACTERS,
} from "ext:deno_node/internal/errors.ts";
import { getTimerDuration } from "ext:deno_node/internal/timers.mjs";
import { serve, upgradeHttpRaw } from "ext:deno_http/00_serve.ts";
import { createHttpClient } from "ext:deno_fetch/22_http_client.js";
import { headersEntries } from "ext:deno_fetch/20_headers.js";
import { timerId } from "ext:deno_web/03_abort_signal.js";
import { clearTimeout as webClearTimeout } from "ext:deno_web/02_timers.js";
import { resourceForReadableStream } from "ext:deno_web/06_streams.js";
import { UpgradedConn } from "ext:deno_net/01_net.js";
import { STATUS_CODES } from "node:_http_server";
import { methods as METHODS } from "node:_http_common";
import { deprecate } from "node:util";
const { internalRidSymbol } = core;
const { ArrayIsArray, StringPrototypeToLowerCase } = primordials;
type Chunk = string | Buffer | Uint8Array;
const ENCODER = new TextEncoder();
export interface RequestOptions {
agent?: Agent;
auth?: string;
createConnection?: () => unknown;
defaultPort?: number;
family?: number;
headers?: Record<string, string>;
hints?: number;
host?: string;
hostname?: string;
insecureHTTPParser?: boolean;
localAddress?: string;
localPort?: number;
lookup?: () => void;
maxHeaderSize?: number;
method?: string;
path?: string;
port?: number;
protocol?: string;
setHost?: boolean;
socketPath?: string;
timeout?: number;
signal?: AbortSignal;
href?: string;
}
function validateHost(host, name) {
if (host !== null && host !== undefined && typeof host !== "string") {
throw new ERR_INVALID_ARG_TYPE(`options.${name}`, [
"string",
"undefined",
"null",
], host);
}
return host;
}
const INVALID_PATH_REGEX = /[^\u0021-\u00ff]/;
const kError = Symbol("kError");
class FakeSocket extends EventEmitter {
constructor(
opts: {
encrypted?: boolean | undefined;
remotePort?: number | undefined;
remoteAddress?: string | undefined;
reader?: ReadableStreamDefaultReader | undefined;
} = {},
) {
super();
this.remoteAddress = opts.remoteAddress;
this.remotePort = opts.remotePort;
this.encrypted = opts.encrypted;
this.reader = opts.reader;
this.writable = true;
this.readable = true;
}
setKeepAlive() {}
end() {}
destroy() {}
setTimeout(callback, timeout = 0, ...args) {
setTimeout(callback, timeout, args);
}
}
/** ClientRequest represents the http(s) request from the client */
class ClientRequest extends OutgoingMessage {
defaultProtocol = "http:";
aborted = false;
destroyed = false;
agent: Agent;
method: string;
maxHeaderSize: number | undefined;
insecureHTTPParser: boolean;
useChunkedEncodingByDefault: boolean;
path: string;
_req: { requestRid: number; cancelHandleRid: number | null } | undefined;
constructor(
input: string | URL,
options?: RequestOptions,
cb?: (res: IncomingMessageForClient) => void,
) {
super();
if (typeof input === "string") {
const urlStr = input;
input = urlToHttpOptions(new URL(urlStr));
} else if (input instanceof URL) {
// url.URL instance
input = urlToHttpOptions(input);
} else {
cb = options;
options = input;
input = null;
}
if (typeof options === "function") {
cb = options;
options = input || kEmptyObject;
} else {
options = Object.assign(input || {}, options);
}
let agent = options!.agent;
const defaultAgent = options!._defaultAgent || globalAgent;
if (agent === false) {
agent = new defaultAgent.constructor();
} else if (agent === null || agent === undefined) {
if (typeof options!.createConnection !== "function") {
agent = defaultAgent;
}
// Explicitly pass through this statement as agent will not be used
// when createConnection is provided.
} else if (typeof agent.addRequest !== "function") {
throw new ERR_INVALID_ARG_TYPE("options.agent", [
"Agent-like Object",
"undefined",
"false",
], agent);
}
this.agent = agent;
const protocol = options!.protocol || defaultAgent.protocol;
let expectedProtocol = defaultAgent.protocol;
if (this.agent?.protocol) {
expectedProtocol = this.agent!.protocol;
}
if (options!.path) {
const path = String(options.path);
if (INVALID_PATH_REGEX.exec(path) !== null) {
throw new ERR_UNESCAPED_CHARACTERS("Request path");
}
}
if (protocol !== expectedProtocol) {
throw new ERR_INVALID_PROTOCOL(protocol, expectedProtocol);
}
const defaultPort = options!.defaultPort || this.agent?.defaultPort;
const port = options!.port = options!.port || defaultPort || 80;
const host = options!.host = validateHost(options!.hostname, "hostname") ||
validateHost(options!.host, "host") || "localhost";
const setHost = options!.setHost === undefined || Boolean(options!.setHost);
this.socketPath = options!.socketPath;
if (options!.timeout !== undefined) {
this.setTimeout(options.timeout);
}
const signal = options!.signal;
if (signal) {
addAbortSignal(signal, this);
}
let method = options!.method;
const methodIsString = typeof method === "string";
if (method !== null && method !== undefined && !methodIsString) {
throw new ERR_INVALID_ARG_TYPE("options.method", "string", method);
}
if (methodIsString && method) {
if (!checkIsHttpToken(method)) {
throw new ERR_INVALID_HTTP_TOKEN("Method", method);
}
method = this.method = method.toUpperCase();
} else {
method = this.method = "GET";
}
const maxHeaderSize = options!.maxHeaderSize;
if (maxHeaderSize !== undefined) {
validateInteger(maxHeaderSize, "maxHeaderSize", 0);
}
this.maxHeaderSize = maxHeaderSize;
const insecureHTTPParser = options!.insecureHTTPParser;
if (insecureHTTPParser !== undefined) {
validateBoolean(insecureHTTPParser, "options.insecureHTTPParser");
}
this.insecureHTTPParser = insecureHTTPParser;
if (options!.joinDuplicateHeaders !== undefined) {
validateBoolean(
options!.joinDuplicateHeaders,
"options.joinDuplicateHeaders",
);
}
this.joinDuplicateHeaders = options!.joinDuplicateHeaders;
this.path = options!.path || "/";
if (cb) {
this.once("response", cb);
}
if (
method === "GET" ||
method === "HEAD" ||
method === "DELETE" ||
method === "OPTIONS" ||
method === "TRACE" ||
method === "CONNECT"
) {
this.useChunkedEncodingByDefault = false;
} else {
this.useChunkedEncodingByDefault = true;
}
this._ended = false;
this.res = null;
this.aborted = false;
this.upgradeOrConnect = false;
this.parser = null;
this.maxHeadersCount = null;
this.reusedSocket = false;
this.host = host;
this.protocol = protocol;
this.port = port;
this.hash = options.hash;
this.search = options.search;
this.auth = options.auth;
if (this.agent) {
// If there is an agent we should default to Connection:keep-alive,
// but only if the Agent will actually reuse the connection!
// If it's not a keepAlive agent, and the maxSockets==Infinity, then
// there's never a case where this socket will actually be reused
if (!this.agent.keepAlive && !Number.isFinite(this.agent.maxSockets)) {
this._last = true;
this.shouldKeepAlive = false;
} else {
this._last = false;
this.shouldKeepAlive = true;
}
}
const headersArray = Array.isArray(options!.headers);
if (!headersArray) {
if (options!.headers) {
const keys = Object.keys(options!.headers);
// Retain for(;;) loop for performance reasons
// Refs: https://github.com/nodejs/node/pull/30958
for (let i = 0; i < keys.length; i++) {
const key = keys[i];
this.setHeader(key, options!.headers[key]);
}
}
if (host && !this.getHeader("host") && setHost) {
let hostHeader = host;
// For the Host header, ensure that IPv6 addresses are enclosed
// in square brackets, as defined by URI formatting
// https://tools.ietf.org/html/rfc3986#section-3.2.2
const posColon = hostHeader.indexOf(":");
if (
posColon !== -1 &&
hostHeader.includes(":", posColon + 1) &&
hostHeader.charCodeAt(0) !== 91 /* '[' */
) {
hostHeader = `[${hostHeader}]`;
}
if (port && +port !== defaultPort) {
hostHeader += ":" + port;
}
this.setHeader("Host", hostHeader);
}
if (options!.auth && !this.getHeader("Authorization")) {
this.setHeader(
"Authorization",
"Basic " +
Buffer.from(options!.auth).toString("base64"),
);
}
if (this.getHeader("expect") && this._header) {
throw new ERR_HTTP_HEADERS_SENT("render");
}
} else {
for (const [key, val] of options!.headers) {
this.setHeader(key, val);
}
}
this[kUniqueHeaders] = parseUniqueHeadersOption(options!.uniqueHeaders);
let optsWithoutSignal = options as RequestOptions;
if (optsWithoutSignal.signal) {
optsWithoutSignal = Object.assign({}, options);
delete optsWithoutSignal.signal;
}
if (options!.createConnection) {
warnNotImplemented("ClientRequest.options.createConnection");
}
if (options!.lookup) {
notImplemented("ClientRequest.options.lookup");
}
// initiate connection
// TODO(crowlKats): finish this
/*if (this.agent) {
this.agent.addRequest(this, optsWithoutSignal);
} else {
// No agent, default to Connection:close.
this._last = true;
this.shouldKeepAlive = false;
if (typeof optsWithoutSignal.createConnection === "function") {
const oncreate = once((err, socket) => {
if (err) {
this.emit("error", err);
} else {
this.onSocket(socket);
}
});
try {
const newSocket = optsWithoutSignal.createConnection(
optsWithoutSignal,
oncreate,
);
if (newSocket) {
oncreate(null, newSocket);
}
} catch (err) {
oncreate(err);
}
} else {
debug("CLIENT use net.createConnection", optsWithoutSignal);
this.onSocket(createConnection(optsWithoutSignal));
}
}*/
this.onSocket(new FakeSocket({ encrypted: this._encrypted }));
}
_writeHeader() {
const url = this._createUrlStrFromOptions();
const headers = [];
for (const key in this[kOutHeaders]) {
if (Object.hasOwn(this[kOutHeaders], key)) {
const entry = this[kOutHeaders][key];
this._processHeader(headers, entry[0], entry[1], false);
}
}
const client = this._getClient() ?? createHttpClient({ http2: false });
this._client = client;
if (
this.method === "POST" || this.method === "PATCH" || this.method === "PUT"
) {
const { readable, writable } = new TransformStream({
cancel: (e) => {
this._requestSendError = e;
},
});
this._bodyWritable = writable;
this._bodyWriter = writable.getWriter();
this._bodyWriteRid = resourceForReadableStream(readable);
}
this._req = op_node_http_request(
this.method,
url,
headers,
client[internalRidSymbol],
this._bodyWriteRid,
);
(async () => {
try {
const res = await op_node_http_fetch_send(this._req.requestRid);
if (this._req.cancelHandleRid !== null) {
core.tryClose(this._req.cancelHandleRid);
}
if (this._timeout) {
this._timeout.removeEventListener("abort", this._timeoutCb);
webClearTimeout(this._timeout[timerId]);
}
this._client.close();
const incoming = new IncomingMessageForClient(this.socket);
incoming.req = this;
this.res = incoming;
// TODO(@crowlKats):
// incoming.httpVersionMajor = versionMajor;
// incoming.httpVersionMinor = versionMinor;
// incoming.httpVersion = `${versionMajor}.${versionMinor}`;
// incoming.joinDuplicateHeaders = socket?.server?.joinDuplicateHeaders ||
// parser.joinDuplicateHeaders;
incoming.url = res.url;
incoming.statusCode = res.status;
incoming.statusMessage = res.statusText;
incoming.upgrade = null;
for (const [key, _value] of res.headers) {
if (key.toLowerCase() === "upgrade") {
incoming.upgrade = true;
break;
}
}
incoming._addHeaderLines(
res.headers,
Object.entries(res.headers).flat().length,
);
if (incoming.upgrade) {
if (this.listenerCount("upgrade") === 0) {
// No listeners, so we got nothing to do
// destroy?
return;
}
if (this.method === "CONNECT") {
throw new Error("not implemented CONNECT");
}
const upgradeRid = await op_node_http_fetch_response_upgrade(
res.responseRid,
);
assert(typeof res.remoteAddrIp !== "undefined");
assert(typeof res.remoteAddrIp !== "undefined");
const conn = new UpgradedConn(
upgradeRid,
{
transport: "tcp",
hostname: res.remoteAddrIp,
port: res.remoteAddrIp,
},
// TODO(bartlomieju): figure out actual values
{
transport: "tcp",
hostname: "127.0.0.1",
port: 80,
},
);
const socket = new Socket({
handle: new TCP(constants.SERVER, conn),
});
this.upgradeOrConnect = true;
this.emit("upgrade", incoming, socket, Buffer.from([]));
this.destroyed = true;
this._closed = true;
this.emit("close");
} else {
{
incoming._bodyRid = res.responseRid;
}
this.emit("response", incoming);
}
} catch (err) {
if (this._req.cancelHandleRid !== null) {
core.tryClose(this._req.cancelHandleRid);
}
if (this._requestSendError !== undefined) {
// if the request body stream errored, we want to propagate that error
// instead of the original error from opFetchSend
throw new TypeError(
"Failed to fetch: request body stream errored",
{
cause: this._requestSendError,
},
);
}
if (
err.message.includes("connection closed before message completed")
) {
// Node.js seems ignoring this error
} else if (err.message.includes("The signal has been aborted")) {
// Remap this error
this.emit("error", connResetException("socket hang up"));
} else {
this.emit("error", err);
}
}
})();
}
_implicitHeader() {
if (this._header) {
throw new ERR_HTTP_HEADERS_SENT("render");
}
this._storeHeader(
this.method + " " + this.path + " HTTP/1.1\r\n",
this[kOutHeaders],
);
}
_getClient(): Deno.HttpClient | undefined {
return undefined;
}
// TODO(bartlomieju): handle error
onSocket(socket, _err) {
nextTick(() => {
this.socket = socket;
this.emit("socket", socket);
});
}
// deno-lint-ignore no-explicit-any
end(chunk?: any, encoding?: any, cb?: any): this {
// Do nothing if request is already destroyed.
if (this.destroyed) return this;
if (typeof chunk === "function") {
cb = chunk;
chunk = null;
encoding = null;
} else if (typeof encoding === "function") {
cb = encoding;
encoding = null;
}
this.finished = true;
if (chunk) {
this.write_(chunk, encoding, null, true);
} else if (!this._headerSent) {
this._contentLength = 0;
this._implicitHeader();
this._send("", "latin1");
}
(async () => {
try {
await this._bodyWriter?.close();
} catch (_) {
// The readable stream resource is dropped right after
// read is complete closing the writable stream resource.
// If we try to close the writer again, it will result in an
// error which we can safely ignore.
}
try {
cb?.();
} catch (_) {
//
}
})();
return this;
}
abort() {
if (this.aborted) {
return;
}
this.aborted = true;
this.emit("abort");
//process.nextTick(emitAbortNT, this);
this.destroy();
}
// deno-lint-ignore no-explicit-any
destroy(err?: any) {
if (this.destroyed) {
return this;
}
this.destroyed = true;
const rid = this._client?.[internalRidSymbol];
if (rid) {
core.tryClose(rid);
}
// Request might be closed before we actually made it
if (this._req !== undefined && this._req.cancelHandleRid !== null) {
core.tryClose(this._req.cancelHandleRid);
}
// If we're aborting, we don't care about any more response data.
if (this.res) {
this.res._dump();
}
this[kError] = err;
this.socket?.destroy(err);
return this;
}
_createCustomClient(): Promise<Deno.HttpClient | undefined> {
return Promise.resolve(undefined);
}
_createUrlStrFromOptions(): string {
if (this.href) {
return this.href;
}
const protocol = this.protocol ?? this.defaultProtocol;
const auth = this.auth;
const host = this.host ?? this.hostname ?? "localhost";
const hash = this.hash ? `#${this.hash}` : "";
const defaultPort = this.agent?.defaultPort;
const port = this.port ?? defaultPort ?? 80;
let path = this.path ?? "/";
if (!path.startsWith("/")) {
path = "/" + path;
}
const url = new URL(
`${protocol}//${auth ? `${auth}@` : ""}${host}${
port === 80 ? "" : `:${port}`
}${path}`,
);
url.hash = hash;
return url.href;
}
setTimeout(msecs: number, callback?: () => void) {
if (msecs === 0) {
if (this._timeout) {
this.removeAllListeners("timeout");
this._timeout.removeEventListener("abort", this._timeoutCb);
this._timeout = undefined;
}
return this;
}
if (this._ended || this._timeout) {
return this;
}
msecs = getTimerDuration(msecs, "msecs");
if (callback) this.once("timeout", callback);
const timeout = AbortSignal.timeout(msecs);
this._timeoutCb = () => this.emit("timeout");
timeout.addEventListener("abort", this._timeoutCb);
this._timeout = timeout;
return this;
}
_processHeader(headers, key, value, validate) {
if (validate) {
validateHeaderName(key);
}
// If key is content-disposition and there is content-length
// encode the value in latin1
// https://www.rfc-editor.org/rfc/rfc6266#section-4.3
// Refs: https://github.com/nodejs/node/pull/46528
if (isContentDispositionField(key) && this._contentLength) {
value = Buffer.from(value).toString("latin1");
}
if (Array.isArray(value)) {
if (
(value.length < 2 || !isCookieField(key)) &&
(!this[kUniqueHeaders] || !this[kUniqueHeaders].has(key.toLowerCase()))
) {
// Retain for(;;) loop for performance reasons
// Refs: https://github.com/nodejs/node/pull/30958
for (let i = 0; i < value.length; i++) {
headers.push([key, value[i]]);
}
return;
}
value = value.join("; ");
}
headers.push([key, value]);
}
// Once a socket is assigned to this request and is connected socket.setNoDelay() will be called.
setNoDelay() {
this.socket?.setNoDelay?.();
}
}
// isCookieField performs a case-insensitive comparison of a provided string
// against the word "cookie." As of V8 6.6 this is faster than handrolling or
// using a case-insensitive RegExp.
function isCookieField(s) {
return s.length === 6 && s.toLowerCase() === "cookie";
}
function isContentDispositionField(s) {
return s.length === 19 &&
s.toLowerCase() === "content-disposition";
}
const kHeaders = Symbol("kHeaders");
const kHeadersDistinct = Symbol("kHeadersDistinct");
const kHeadersCount = Symbol("kHeadersCount");
const kTrailers = Symbol("kTrailers");
const kTrailersDistinct = Symbol("kTrailersDistinct");
const kTrailersCount = Symbol("kTrailersCount");
/** IncomingMessage for http(s) client */
export class IncomingMessageForClient extends NodeReadable {
decoder = new TextDecoder();
constructor(socket: Socket) {
super();
this._readableState.readingMore = true;
this.socket = socket;
this.httpVersionMajor = null;
this.httpVersionMinor = null;
this.httpVersion = null;
this.complete = false;
this[kHeaders] = null;
this[kHeadersCount] = 0;
this.rawHeaders = [];
this[kTrailers] = null;
this[kTrailersCount] = 0;
this.rawTrailers = [];
this.joinDuplicateHeaders = false;
this.aborted = false;
this.upgrade = null;
// request (server) only
this.url = "";
this.method = null;
// response (client) only
this.statusCode = null;
this.statusMessage = null;
this.client = socket;
this._consuming = false;
// Flag for when we decide that this message cannot possibly be
// read by the user, so there's no point continuing to handle it.
this._dumped = false;
}
get connection() {
return this.socket;
}
set connection(val) {
this.socket = val;
}
get headers() {
if (!this[kHeaders]) {
this[kHeaders] = {};
const src = this.rawHeaders;
const dst = this[kHeaders];
for (let n = 0; n < this[kHeadersCount]; n += 2) {
this._addHeaderLine(src[n + 0], src[n + 1], dst);
}
}
return this[kHeaders];
}
set headers(val) {
this[kHeaders] = val;
}
get headersDistinct() {
if (!this[kHeadersDistinct]) {
this[kHeadersDistinct] = {};
const src = this.rawHeaders;
const dst = this[kHeadersDistinct];
for (let n = 0; n < this[kHeadersCount]; n += 2) {
this._addHeaderLineDistinct(src[n + 0], src[n + 1], dst);
}
}
return this[kHeadersDistinct];
}
set headersDistinct(val) {
this[kHeadersDistinct] = val;
}
get trailers() {
if (!this[kTrailers]) {
this[kTrailers] = {};
const src = this.rawTrailers;
const dst = this[kTrailers];
for (let n = 0; n < this[kTrailersCount]; n += 2) {
this._addHeaderLine(src[n + 0], src[n + 1], dst);
}
}
return this[kTrailers];
}
set trailers(val) {
this[kTrailers] = val;
}
get trailersDistinct() {
if (!this[kTrailersDistinct]) {
this[kTrailersDistinct] = {};
const src = this.rawTrailers;
const dst = this[kTrailersDistinct];
for (let n = 0; n < this[kTrailersCount]; n += 2) {
this._addHeaderLineDistinct(src[n + 0], src[n + 1], dst);
}
}
return this[kTrailersDistinct];
}
set trailersDistinct(val) {
this[kTrailersDistinct] = val;
}
setTimeout(msecs, callback) {
if (callback) {
this.on("timeout", callback);
}
this.socket.setTimeout(msecs);
return this;
}
_read(_n) {
if (!this._consuming) {
this._readableState.readingMore = false;
this._consuming = true;
}
const buf = new Uint8Array(16 * 1024);
core.read(this._bodyRid, buf).then((bytesRead) => {
if (bytesRead === 0) {
this.push(null);
} else {
this.push(Buffer.from(buf.subarray(0, bytesRead)));
}
});
}
// It's possible that the socket will be destroyed, and removed from
// any messages, before ever calling this. In that case, just skip
// it, since something else is destroying this connection anyway.
_destroy(err, cb) {
this.complete = true;
if (!this.readableEnded || !this.complete) {
this.aborted = true;
this.emit("aborted");
}
core.tryClose(this._bodyRid);
// If aborted and the underlying socket is not already destroyed,
// destroy it.
// We have to check if the socket is already destroyed because finished
// does not call the callback when this method is invoked from `_http_client`
// in `test/parallel/test-http-client-spurious-aborted.js`
if (this.socket && !this.socket.destroyed && this.aborted) {
this.socket.destroy(err);
const cleanup = finished(this.socket, (e) => {
if (e?.code === "ERR_STREAM_PREMATURE_CLOSE") {
e = null;
}
cleanup();
onError(this, e || err, cb);
});
} else {
onError(this, err, cb);
}
}
_addHeaderLines(headers, n) {
if (headers && headers.length) {
let dest;
if (this.complete) {
this.rawTrailers = headers.flat();
this[kTrailersCount] = n;
dest = this[kTrailers];
} else {
this.rawHeaders = headers.flat();
this[kHeadersCount] = n;
dest = this[kHeaders];
}
if (dest) {
for (const header of headers) {
this._addHeaderLine(header[0], header[1], dest);
}
}
}
}
// Add the given (field, value) pair to the message
//
// Per RFC2616, section 4.2 it is acceptable to join multiple instances of the
// same header with a ', ' if the header in question supports specification of
// multiple values this way. The one exception to this is the Cookie header,
// which has multiple values joined with a '; ' instead. If a header's values
// cannot be joined in either of these ways, we declare the first instance the
// winner and drop the second. Extended header fields (those beginning with
// 'x-') are always joined.
_addHeaderLine(field, value, dest) {
field = matchKnownFields(field);
const flag = field.charCodeAt(0);
if (flag === 0 || flag === 2) {
field = field.slice(1);
// Make a delimited list
if (typeof dest[field] === "string") {
dest[field] += (flag === 0 ? ", " : "; ") + value;
} else {
dest[field] = value;
}
} else if (flag === 1) {
// Array header -- only Set-Cookie at the moment
if (dest["set-cookie"] !== undefined) {
dest["set-cookie"].push(value);
} else {
dest["set-cookie"] = [value];
}
} else if (this.joinDuplicateHeaders) {
// RFC 9110 https://www.rfc-editor.org/rfc/rfc9110#section-5.2
// https://github.com/nodejs/node/issues/45699
// allow authorization multiple fields
// Make a delimited list
if (dest[field] === undefined) {
dest[field] = value;
} else {
dest[field] += ", " + value;
}
} else if (dest[field] === undefined) {
// Drop duplicates
dest[field] = value;
}
}
_addHeaderLineDistinct(field, value, dest) {
field = field.toLowerCase();
if (!dest[field]) {
dest[field] = [value];
} else {
dest[field].push(value);
}
}
// Call this instead of resume() if we want to just
// dump all the data to /dev/null
_dump() {
if (!this._dumped) {
this._dumped = true;
// If there is buffered data, it may trigger 'data' events.
// Remove 'data' event listeners explicitly.
this.removeAllListeners("data");
this.resume();
}
}
}
// This function is used to help avoid the lowercasing of a field name if it
// matches a 'traditional cased' version of a field name. It then returns the
// lowercased name to both avoid calling toLowerCase() a second time and to
// indicate whether the field was a 'no duplicates' field. If a field is not a
// 'no duplicates' field, a `0` byte is prepended as a flag. The one exception
// to this is the Set-Cookie header which is indicated by a `1` byte flag, since
// it is an 'array' field and thus is treated differently in _addHeaderLines().
function matchKnownFields(field, lowercased) {
switch (field.length) {
case 3:
if (field === "Age" || field === "age") return "age";
break;
case 4:
if (field === "Host" || field === "host") return "host";
if (field === "From" || field === "from") return "from";
if (field === "ETag" || field === "etag") return "etag";
if (field === "Date" || field === "date") return "\u0000date";
if (field === "Vary" || field === "vary") return "\u0000vary";
break;
case 6:
if (field === "Server" || field === "server") return "server";
if (field === "Cookie" || field === "cookie") return "\u0002cookie";
if (field === "Origin" || field === "origin") return "\u0000origin";
if (field === "Expect" || field === "expect") return "\u0000expect";
if (field === "Accept" || field === "accept") return "\u0000accept";
break;
case 7:
if (field === "Referer" || field === "referer") return "referer";
if (field === "Expires" || field === "expires") return "expires";
if (field === "Upgrade" || field === "upgrade") return "\u0000upgrade";
break;
case 8:
if (field === "Location" || field === "location") {
return "location";
}
if (field === "If-Match" || field === "if-match") {
return "\u0000if-match";
}
break;
case 10:
if (field === "User-Agent" || field === "user-agent") {
return "user-agent";
}
if (field === "Set-Cookie" || field === "set-cookie") {
return "\u0001";
}
if (field === "Connection" || field === "connection") {
return "\u0000connection";
}
break;
case 11:
if (field === "Retry-After" || field === "retry-after") {
return "retry-after";
}
break;
case 12:
if (field === "Content-Type" || field === "content-type") {
return "content-type";
}
if (field === "Max-Forwards" || field === "max-forwards") {
return "max-forwards";
}
break;
case 13:
if (field === "Authorization" || field === "authorization") {
return "authorization";
}
if (field === "Last-Modified" || field === "last-modified") {
return "last-modified";
}
if (field === "Cache-Control" || field === "cache-control") {
return "\u0000cache-control";
}
if (field === "If-None-Match" || field === "if-none-match") {
return "\u0000if-none-match";
}
break;
case 14:
if (field === "Content-Length" || field === "content-length") {
return "content-length";
}
break;
case 15:
if (field === "Accept-Encoding" || field === "accept-encoding") {
return "\u0000accept-encoding";
}
if (field === "Accept-Language" || field === "accept-language") {
return "\u0000accept-language";
}
if (field === "X-Forwarded-For" || field === "x-forwarded-for") {
return "\u0000x-forwarded-for";
}
break;
case 16:
if (field === "Content-Encoding" || field === "content-encoding") {
return "\u0000content-encoding";
}
if (field === "X-Forwarded-Host" || field === "x-forwarded-host") {
return "\u0000x-forwarded-host";
}
break;
case 17:
if (field === "If-Modified-Since" || field === "if-modified-since") {
return "if-modified-since";
}
if (field === "Transfer-Encoding" || field === "transfer-encoding") {
return "\u0000transfer-encoding";
}
if (field === "X-Forwarded-Proto" || field === "x-forwarded-proto") {
return "\u0000x-forwarded-proto";
}
break;
case 19:
if (field === "Proxy-Authorization" || field === "proxy-authorization") {
return "proxy-authorization";
}
if (field === "If-Unmodified-Since" || field === "if-unmodified-since") {
return "if-unmodified-since";
}
break;
}
if (lowercased) {
return "\u0000" + field;
}
return matchKnownFields(field.toLowerCase(), true);
}
function onError(self, error, cb) {
// This is to keep backward compatible behavior.
// An error is emitted only if there are listeners attached to the event.
if (self.listenerCount("error") === 0) {
cb();
} else {
cb(error);
}
}
export type ServerResponse = {
statusCode: number;
statusMessage?: string;
_headers: Record<string, string | string[]>;
_hasNonStringHeaders: boolean;
_readable: ReadableStream;
finished: boolean;
headersSent: boolean;
_resolve: (value: Response | PromiseLike<Response>) => void;
// deno-lint-ignore no-explicit-any
_socketOverride: any | null;
// deno-lint-ignore no-explicit-any
socket: any | null;
setHeader(name: string, value: string | string[]): void;
appendHeader(name: string, value: string | string[]): void;
getHeader(name: string): string | string[];
removeHeader(name: string): void;
getHeaderNames(): string[];
getHeaders(): Record<string, string | number | string[]>;
hasHeader(name: string): boolean;
writeHead(
status: number,
statusMessage?: string,
headers?:
| Record<string, string | number | string[]>
| Array<[string, string]>,
): void;
writeHead(
status: number,
headers?:
| Record<string, string | number | string[]>
| Array<[string, string]>,
): void;
_ensureHeaders(singleChunk?: Chunk): void;
respond(final: boolean, singleChunk?: Chunk): void;
// deno-lint-ignore no-explicit-any
end(chunk?: any, encoding?: any, cb?: any): void;
flushHeaders(): void;
_implicitHeader(): void;
// Undocumented field used by `npm:light-my-request`.
_header: string;
assignSocket(socket): void;
detachSocket(socket): void;
} & { -readonly [K in keyof NodeWritable]: NodeWritable[K] };
type ServerResponseStatic = {
new (
resolve: (value: Response | PromiseLike<Response>) => void,
socket: FakeSocket,
): ServerResponse;
_enqueue(controller: ReadableStreamDefaultController, chunk: Chunk): void;
_bodyShouldBeNull(statusCode: number): boolean;
};
export const ServerResponse = function (
this: ServerResponse,
resolve: (value: Response | PromiseLike<Response>) => void,
socket: FakeSocket,
) {
this.statusCode = 200;
this.statusMessage = undefined;
this._headers = { __proto__: null };
this._hasNonStringHeaders = false;
this.writable = true;
// used by `npm:on-finished`
this.finished = false;
this.headersSent = false;
this._socketOverride = null;
let controller: ReadableByteStreamController;
const readable = new ReadableStream({
start(c) {
controller = c as ReadableByteStreamController;
},
});
NodeWritable.call(
this,
{
autoDestroy: true,
defaultEncoding: "utf-8",
emitClose: true,
// FIXME: writes don't work when a socket is assigned and then
// detached.
write: (chunk, encoding, cb) => {
// Writes chunks are directly written to the socket if
// one is assigned via assignSocket()
if (this._socketOverride && this._socketOverride.writable) {
this._socketOverride.write(chunk, encoding);
return cb();
}
if (!this.headersSent) {
ServerResponse._enqueue(controller, chunk);
this.respond(false);
return cb();
}
ServerResponse._enqueue(controller, chunk);
return cb();
},
final: (cb) => {
if (!this.headersSent) {
this.respond(true);
}
controller.close();
return cb();
},
destroy: (err, cb) => {
if (err) {
controller.error(err);
}
return cb(null);
},
} satisfies NodeWritableOptions,
);
this._readable = readable;
this._resolve = resolve;
this.socket = socket;
this._header = "";
} as unknown as ServerResponseStatic;
Object.setPrototypeOf(ServerResponse.prototype, NodeWritable.prototype);
Object.setPrototypeOf(ServerResponse, NodeWritable);
ServerResponse._enqueue = function (
this: ServerResponse,
controller: ReadableStreamDefaultController,
chunk: Chunk,
) {
try {
if (typeof chunk === "string") {
controller.enqueue(ENCODER.encode(chunk));
} else {
controller.enqueue(chunk);
}
} catch (_) {
// The stream might have been closed. Ignore the error.
}
};
/** Returns true if the response body should be null with the given
* http status code */
ServerResponse._bodyShouldBeNull = function (
this: ServerResponse,
status: number,
) {
return status === 101 || status === 204 || status === 205 || status === 304;
};
ServerResponse.prototype.setHeader = function (
this: ServerResponse,
name: string,
value: string | string[],
) {
if (Array.isArray(value)) {
this._hasNonStringHeaders = true;
}
this._headers[StringPrototypeToLowerCase(name)] = value;
return this;
};
ServerResponse.prototype.appendHeader = function (
this: ServerResponse,
name: string,
value: string | string[],
) {
const key = StringPrototypeToLowerCase(name);
if (this._headers[key] === undefined) {
if (Array.isArray(value)) this._hasNonStringHeaders = true;
this._headers[key] = value;
} else {
this._hasNonStringHeaders = true;
if (!Array.isArray(this._headers[key])) {
this._headers[key] = [this._headers[key]];
}
const header = this._headers[key];
if (Array.isArray(value)) {
header.push(...value);
} else {
header.push(value);
}
}
return this;
};
ServerResponse.prototype.getHeader = function (
this: ServerResponse,
name: string,
) {
return this._headers[StringPrototypeToLowerCase(name)];
};
ServerResponse.prototype.removeHeader = function (
this: ServerResponse,
name: string,
) {
delete this._headers[StringPrototypeToLowerCase(name)];
};
ServerResponse.prototype.getHeaderNames = function (this: ServerResponse) {
return Object.keys(this._headers);
};
ServerResponse.prototype.getHeaders = function (
this: ServerResponse,
): Record<string, string | number | string[]> {
return { __proto__: null, ...this._headers };
};
ServerResponse.prototype.hasHeader = function (
this: ServerResponse,
name: string,
) {
return Object.hasOwn(this._headers, name);
};
ServerResponse.prototype.writeHead = function (
this: ServerResponse,
status: number,
statusMessageOrHeaders?:
| string
| Record<string, string | number | string[]>
| Array<[string, string]>,
maybeHeaders?:
| Record<string, string | number | string[]>
| Array<[string, string]>,
) {
this.statusCode = status;
let headers = null;
if (typeof statusMessageOrHeaders === "string") {
this.statusMessage = statusMessageOrHeaders;
if (maybeHeaders !== undefined) {
headers = maybeHeaders;
}
} else if (statusMessageOrHeaders !== undefined) {
headers = statusMessageOrHeaders;
}
if (headers !== null) {
if (ArrayIsArray(headers)) {
headers = headers as Array<[string, string]>;
for (let i = 0; i < headers.length; i++) {
this.appendHeader(headers[i][0], headers[i][1]);
}
} else {
headers = headers as Record<string, string>;
for (const k in headers) {
if (Object.hasOwn(headers, k)) {
this.setHeader(k, headers[k]);
}
}
}
}
return this;
};
ServerResponse.prototype._ensureHeaders = function (
this: ServerResponse,
singleChunk?: Chunk,
) {
if (this.statusCode === 200 && this.statusMessage === undefined) {
this.statusMessage = "OK";
}
if (typeof singleChunk === "string" && !this.hasHeader("content-type")) {
this.setHeader("content-type", "text/plain;charset=UTF-8");
}
};
ServerResponse.prototype.respond = function (
this: ServerResponse,
final: boolean,
singleChunk?: Chunk,
) {
this.headersSent = true;
this._ensureHeaders(singleChunk);
let body = singleChunk ?? (final ? null : this._readable);
if (ServerResponse._bodyShouldBeNull(this.statusCode)) {
body = null;
}
let headers: Record<string, string> | [string, string][] = this
._headers as Record<string, string>;
if (this._hasNonStringHeaders) {
headers = [];
// Guard is not needed as this is a null prototype object.
// deno-lint-ignore guard-for-in
for (const key in this._headers) {
const entry = this._headers[key];
if (Array.isArray(entry)) {
for (const value of entry) {
headers.push([key, value]);
}
} else {
headers.push([key, entry]);
}
}
}
this._resolve(
new Response(body, {
headers,
status: this.statusCode,
statusText: this.statusMessage,
}),
);
};
ServerResponse.prototype.end = function (
this: ServerResponse,
// deno-lint-ignore no-explicit-any
chunk?: any,
// deno-lint-ignore no-explicit-any
encoding?: any,
// deno-lint-ignore no-explicit-any
cb?: any,
) {
this.finished = true;
if (!chunk && "transfer-encoding" in this._headers) {
// FIXME(bnoordhuis) Node sends a zero length chunked body instead, i.e.,
// the trailing "0\r\n", but respondWith() just hangs when I try that.
this._headers["content-length"] = "0";
delete this._headers["transfer-encoding"];
}
// @ts-expect-error The signature for cb is stricter than the one implemented here
NodeWritable.prototype.end.call(this, chunk, encoding, cb);
};
ServerResponse.prototype.flushHeaders = function (this: ServerResponse) {
// no-op
};
// Undocumented API used by `npm:compression`.
ServerResponse.prototype._implicitHeader = function (this: ServerResponse) {
this.writeHead(this.statusCode);
};
ServerResponse.prototype.assignSocket = function (
this: ServerResponse,
socket,
) {
if (socket._httpMessage) {
throw new ERR_HTTP_SOCKET_ASSIGNED();
}
socket._httpMessage = this;
this._socketOverride = socket;
};
ServerResponse.prototype.detachSocket = function (
this: ServerResponse,
socket,
) {
assert(socket._httpMessage === this);
socket._httpMessage = null;
this._socketOverride = null;
};
Object.defineProperty(ServerResponse.prototype, "connection", {
get: deprecate(
function (this: ServerResponse) {
return this._socketOverride;
},
"ServerResponse.prototype.connection is deprecated",
"DEP0066",
),
set: deprecate(
// deno-lint-ignore no-explicit-any
function (this: ServerResponse, socket: any) {
this._socketOverride = socket;
},
"ServerResponse.prototype.connection is deprecated",
"DEP0066",
),
});
// TODO(@AaronO): optimize
export class IncomingMessageForServer extends NodeReadable {
#headers: Record<string, string>;
url: string;
method: string;
socket: Socket | FakeSocket;
constructor(socket: FakeSocket | Socket) {
const reader = socket instanceof FakeSocket
? socket.reader
: socket instanceof Socket
? NodeDuplex.toWeb(socket).readable.getReader()
: null;
super({
autoDestroy: true,
emitClose: true,
objectMode: false,
read: async function (_size) {
if (!reader) {
return this.push(null);
}
try {
const { value } = await reader!.read();
this.push(value !== undefined ? Buffer.from(value) : null);
} catch (err) {
this.destroy(err as Error);
}
},
destroy: (err, cb) => {
reader?.cancel().catch(() => {
// Don't throw error - it's propagated to the user via 'error' event.
}).finally(nextTick(onError, this, err, cb));
},
});
this.url = "";
this.method = "";
this.socket = socket;
this.upgrade = null;
this.rawHeaders = [];
}
get aborted() {
return false;
}
get httpVersion() {
return "1.1";
}
set httpVersion(val) {
assert(val === "1.1");
}
get headers() {
if (!this.#headers) {
this.#headers = {};
const entries = headersEntries(this.rawHeaders);
for (let i = 0; i < entries.length; i++) {
const entry = entries[i];
this.#headers[entry[0]] = entry[1];
}
}
return this.#headers;
}
set headers(val) {
this.#headers = val;
}
// connection is deprecated, but still tested in unit test.
get connection() {
return this.socket;
}
setTimeout(msecs, callback) {
if (callback) {
this.on("timeout", callback);
}
this.socket.setTimeout(msecs);
return this;
}
}
export type ServerHandler = (
req: IncomingMessageForServer,
res: ServerResponse,
) => void;
export function Server(opts, requestListener?: ServerHandler): ServerImpl {
return new ServerImpl(opts, requestListener);
}
export class ServerImpl extends EventEmitter {
#addr: Deno.NetAddr | null = null;
#hasClosed = false;
#server: Deno.HttpServer;
#unref = false;
#ac?: AbortController;
#serveDeferred: ReturnType<typeof Promise.withResolvers<void>>;
listening = false;
constructor(opts, requestListener?: ServerHandler) {
super();
if (typeof opts === "function") {
requestListener = opts;
opts = kEmptyObject;
} else if (opts == null) {
opts = kEmptyObject;
} else {
validateObject(opts, "options");
}
this._opts = opts;
this.#serveDeferred = Promise.withResolvers<void>();
this.#serveDeferred.promise.then(() => this.emit("close"));
if (requestListener !== undefined) {
this.on("request", requestListener);
}
}
listen(...args: unknown[]): this {
// TODO(bnoordhuis) Delegate to net.Server#listen().
const normalized = _normalizeArgs(args);
const options = normalized[0] as Partial<ListenOptions>;
const cb = normalized[1];
if (cb !== null) {
// @ts-ignore change EventEmitter's sig to use CallableFunction
this.once("listening", cb);
}
let port = 0;
if (typeof options.port === "number" || typeof options.port === "string") {
validatePort(options.port, "options.port");
port = options.port | 0;
}
// TODO(bnoordhuis) Node prefers [::] when host is omitted,
// we on the other hand default to 0.0.0.0.
let hostname = options.host ?? "0.0.0.0";
if (hostname == "localhost") {
hostname = "127.0.0.1";
}
this.#addr = {
hostname,
port,
} as Deno.NetAddr;
this.listening = true;
nextTick(() => this._serve());
return this;
}
_serve() {
const ac = new AbortController();
const handler = (request: Request, info: Deno.ServeHandlerInfo) => {
const socket = new FakeSocket({
remoteAddress: info.remoteAddr.hostname,
remotePort: info.remoteAddr.port,
encrypted: this._encrypted,
reader: request.body?.getReader(),
});
const req = new IncomingMessageForServer(socket);
// Slice off the origin so that we only have pathname + search
req.url = request.url?.slice(request.url.indexOf("/", 8));
req.method = request.method;
req.upgrade =
request.headers.get("connection")?.toLowerCase().includes("upgrade") &&
request.headers.get("upgrade");
req.rawHeaders = request.headers;
if (req.upgrade && this.listenerCount("upgrade") > 0) {
const { conn, response } = upgradeHttpRaw(request);
const socket = new Socket({
handle: new TCP(constants.SERVER, conn),
});
// Update socket held by `req`.
req.socket = socket;
this.emit("upgrade", req, socket, Buffer.from([]));
return response;
} else {
return new Promise<Response>((resolve): void => {
const res = new ServerResponse(resolve, socket);
this.emit("request", req, res);
});
}
};
if (this.#hasClosed) {
return;
}
this.#ac = ac;
try {
this.#server = serve(
{
handler: handler as Deno.ServeHandler,
...this.#addr,
signal: ac.signal,
// @ts-ignore Might be any without `--unstable` flag
onListen: ({ port }) => {
this.#addr!.port = port;
this.emit("listening");
},
...this._additionalServeOptions?.(),
},
);
} catch (e) {
this.emit("error", e);
return;
}
if (this.#unref) {
this.#server.unref();
}
this.#server.finished.then(() => this.#serveDeferred!.resolve());
}
setTimeout() {
// deno-lint-ignore no-console
console.error("Not implemented: Server.setTimeout()");
}
ref() {
if (this.#server) {
this.#server.ref();
}
this.#unref = false;
return this;
}
unref() {
if (this.#server) {
this.#server.unref();
}
this.#unref = true;
return this;
}
close(cb?: (err?: Error) => void): this {
const listening = this.listening;
this.listening = false;
this.#hasClosed = true;
if (typeof cb === "function") {
if (listening) {
this.once("close", cb);
} else {
this.once("close", function close() {
cb(new ERR_SERVER_NOT_RUNNING());
});
}
}
if (listening && this.#ac) {
if (this.#server) {
this.#server.shutdown();
} else if (this.#ac) {
this.#ac.abort();
this.#ac = undefined;
}
} else {
this.#serveDeferred!.resolve();
}
this.#server = undefined;
return this;
}
closeAllConnections() {
if (this.#hasClosed) {
return;
}
if (this.#ac) {
this.#ac.abort();
this.#ac = undefined;
}
}
closeIdleConnections() {
if (this.#hasClosed) {
return;
}
if (this.#server) {
this.#server.shutdown();
}
}
address() {
if (this.#addr === null) return null;
return {
port: this.#addr.port,
address: this.#addr.hostname,
};
}
}
Server.prototype = ServerImpl.prototype;
export function createServer(opts, requestListener?: ServerHandler) {
return Server(opts, requestListener);
}
/** Makes an HTTP request. */
export function request(
url: string | URL,
cb?: (res: IncomingMessageForClient) => void,
): ClientRequest;
export function request(
opts: RequestOptions,
cb?: (res: IncomingMessageForClient) => void,
): ClientRequest;
export function request(
url: string | URL,
opts: RequestOptions,
cb?: (res: IncomingMessageForClient) => void,
): ClientRequest;
// deno-lint-ignore no-explicit-any
export function request(...args: any[]) {
return new ClientRequest(args[0], args[1], args[2]);
}
/** Makes a `GET` HTTP request. */
export function get(
url: string | URL,
cb?: (res: IncomingMessageForClient) => void,
): ClientRequest;
export function get(
opts: RequestOptions,
cb?: (res: IncomingMessageForClient) => void,
): ClientRequest;
export function get(
url: string | URL,
opts: RequestOptions,
cb?: (res: IncomingMessageForClient) => void,
): ClientRequest;
// deno-lint-ignore no-explicit-any
export function get(...args: any[]) {
const req = request(args[0], args[1], args[2]);
req.end();
return req;
}
export const maxHeaderSize = 16_384;
export {
Agent,
ClientRequest,
globalAgent,
IncomingMessageForServer as IncomingMessage,
METHODS,
OutgoingMessage,
STATUS_CODES,
validateHeaderName,
validateHeaderValue,
};
export default {
Agent,
globalAgent,
ClientRequest,
STATUS_CODES,
METHODS,
createServer,
Server,
IncomingMessage: IncomingMessageForServer,
IncomingMessageForClient,
IncomingMessageForServer,
OutgoingMessage,
ServerResponse,
request,
get,
validateHeaderName,
validateHeaderValue,
maxHeaderSize,
};
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