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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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module.exports = require("./index.js");

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module.exports = require("./index.js");

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var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __name = (target, value) => __defProp(target, "name", { value, configurable: true });
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
if (from && typeof from === "object" || typeof from === "function") {
for (let key of __getOwnPropNames(from))
if (!__hasOwnProp.call(to, key) && key !== except)
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
}
return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
// If the importer is in node compatibility mode or this is not an ESM
// file that has been converted to a CommonJS file using a Babel-
// compatible transform (i.e. "__esModule" has not been set), then set
// "default" to the CommonJS "module.exports" for node compatibility.
isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
mod
));
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
// src/index.ts
var src_exports = {};
__export(src_exports, {
DEFAULT_REQUEST_TIMEOUT: () => DEFAULT_REQUEST_TIMEOUT,
NodeHttp2Handler: () => NodeHttp2Handler,
NodeHttpHandler: () => NodeHttpHandler,
streamCollector: () => streamCollector
});
module.exports = __toCommonJS(src_exports);
// src/node-http-handler.ts
var import_protocol_http = require("@smithy/protocol-http");
var import_querystring_builder = require("@smithy/querystring-builder");
var import_http = require("http");
var import_https = require("https");
// src/constants.ts
var NODEJS_TIMEOUT_ERROR_CODES = ["ECONNRESET", "EPIPE", "ETIMEDOUT"];
// src/get-transformed-headers.ts
var getTransformedHeaders = /* @__PURE__ */ __name((headers) => {
const transformedHeaders = {};
for (const name of Object.keys(headers)) {
const headerValues = headers[name];
transformedHeaders[name] = Array.isArray(headerValues) ? headerValues.join(",") : headerValues;
}
return transformedHeaders;
}, "getTransformedHeaders");
// src/set-connection-timeout.ts
var setConnectionTimeout = /* @__PURE__ */ __name((request, reject, timeoutInMs = 0) => {
if (!timeoutInMs) {
return;
}
const timeoutId = setTimeout(() => {
request.destroy();
reject(
Object.assign(new Error(`Socket timed out without establishing a connection within ${timeoutInMs} ms`), {
name: "TimeoutError"
})
);
}, timeoutInMs);
request.on("socket", (socket) => {
if (socket.connecting) {
socket.on("connect", () => {
clearTimeout(timeoutId);
});
} else {
clearTimeout(timeoutId);
}
});
}, "setConnectionTimeout");
// src/set-socket-keep-alive.ts
var setSocketKeepAlive = /* @__PURE__ */ __name((request, { keepAlive, keepAliveMsecs }) => {
if (keepAlive !== true) {
return;
}
request.on("socket", (socket) => {
socket.setKeepAlive(keepAlive, keepAliveMsecs || 0);
});
}, "setSocketKeepAlive");
// src/set-socket-timeout.ts
var setSocketTimeout = /* @__PURE__ */ __name((request, reject, timeoutInMs = 0) => {
request.setTimeout(timeoutInMs, () => {
request.destroy();
reject(Object.assign(new Error(`Connection timed out after ${timeoutInMs} ms`), { name: "TimeoutError" }));
});
}, "setSocketTimeout");
// src/write-request-body.ts
var import_stream = require("stream");
var MIN_WAIT_TIME = 1e3;
async function writeRequestBody(httpRequest, request, maxContinueTimeoutMs = MIN_WAIT_TIME) {
const headers = request.headers ?? {};
const expect = headers["Expect"] || headers["expect"];
let timeoutId = -1;
let hasError = false;
if (expect === "100-continue") {
await Promise.race([
new Promise((resolve) => {
timeoutId = Number(setTimeout(resolve, Math.max(MIN_WAIT_TIME, maxContinueTimeoutMs)));
}),
new Promise((resolve) => {
httpRequest.on("continue", () => {
clearTimeout(timeoutId);
resolve();
});
httpRequest.on("error", () => {
hasError = true;
clearTimeout(timeoutId);
resolve();
});
})
]);
}
if (!hasError) {
writeBody(httpRequest, request.body);
}
}
__name(writeRequestBody, "writeRequestBody");
function writeBody(httpRequest, body) {
if (body instanceof import_stream.Readable) {
body.pipe(httpRequest);
return;
}
if (body) {
if (Buffer.isBuffer(body) || typeof body === "string") {
httpRequest.end(body);
return;
}
const uint8 = body;
if (typeof uint8 === "object" && uint8.buffer && typeof uint8.byteOffset === "number" && typeof uint8.byteLength === "number") {
httpRequest.end(Buffer.from(uint8.buffer, uint8.byteOffset, uint8.byteLength));
return;
}
httpRequest.end(Buffer.from(body));
return;
}
httpRequest.end();
}
__name(writeBody, "writeBody");
// src/node-http-handler.ts
var DEFAULT_REQUEST_TIMEOUT = 0;
var _NodeHttpHandler = class _NodeHttpHandler {
constructor(options) {
this.socketWarningTimestamp = 0;
// Node http handler is hard-coded to http/1.1: https://github.com/nodejs/node/blob/ff5664b83b89c55e4ab5d5f60068fb457f1f5872/lib/_http_server.js#L286
this.metadata = { handlerProtocol: "http/1.1" };
this.configProvider = new Promise((resolve, reject) => {
if (typeof options === "function") {
options().then((_options) => {
resolve(this.resolveDefaultConfig(_options));
}).catch(reject);
} else {
resolve(this.resolveDefaultConfig(options));
}
});
}
/**
* @returns the input if it is an HttpHandler of any class,
* or instantiates a new instance of this handler.
*/
static create(instanceOrOptions) {
if (typeof (instanceOrOptions == null ? void 0 : instanceOrOptions.handle) === "function") {
return instanceOrOptions;
}
return new _NodeHttpHandler(instanceOrOptions);
}
/**
* @internal
*
* @param agent - http(s) agent in use by the NodeHttpHandler instance.
* @returns timestamp of last emitted warning.
*/
static checkSocketUsage(agent, socketWarningTimestamp) {
var _a, _b;
const { sockets, requests, maxSockets } = agent;
if (typeof maxSockets !== "number" || maxSockets === Infinity) {
return socketWarningTimestamp;
}
const interval = 15e3;
if (Date.now() - interval < socketWarningTimestamp) {
return socketWarningTimestamp;
}
if (sockets && requests) {
for (const origin in sockets) {
const socketsInUse = ((_a = sockets[origin]) == null ? void 0 : _a.length) ?? 0;
const requestsEnqueued = ((_b = requests[origin]) == null ? void 0 : _b.length) ?? 0;
if (socketsInUse >= maxSockets && requestsEnqueued >= 2 * maxSockets) {
console.warn(
"@smithy/node-http-handler:WARN",
`socket usage at capacity=${socketsInUse} and ${requestsEnqueued} additional requests are enqueued.`,
"See https://docs.aws.amazon.com/sdk-for-javascript/v3/developer-guide/node-configuring-maxsockets.html",
"or increase socketAcquisitionWarningTimeout=(millis) in the NodeHttpHandler config."
);
return Date.now();
}
}
}
return socketWarningTimestamp;
}
resolveDefaultConfig(options) {
const { requestTimeout, connectionTimeout, socketTimeout, httpAgent, httpsAgent } = options || {};
const keepAlive = true;
const maxSockets = 50;
return {
connectionTimeout,
requestTimeout: requestTimeout ?? socketTimeout,
httpAgent: (() => {
if (httpAgent instanceof import_http.Agent || typeof (httpAgent == null ? void 0 : httpAgent.destroy) === "function") {
return httpAgent;
}
return new import_http.Agent({ keepAlive, maxSockets, ...httpAgent });
})(),
httpsAgent: (() => {
if (httpsAgent instanceof import_https.Agent || typeof (httpsAgent == null ? void 0 : httpsAgent.destroy) === "function") {
return httpsAgent;
}
return new import_https.Agent({ keepAlive, maxSockets, ...httpsAgent });
})()
};
}
destroy() {
var _a, _b, _c, _d;
(_b = (_a = this.config) == null ? void 0 : _a.httpAgent) == null ? void 0 : _b.destroy();
(_d = (_c = this.config) == null ? void 0 : _c.httpsAgent) == null ? void 0 : _d.destroy();
}
async handle(request, { abortSignal } = {}) {
if (!this.config) {
this.config = await this.configProvider;
}
let socketCheckTimeoutId;
return new Promise((_resolve, _reject) => {
let writeRequestBodyPromise = void 0;
const resolve = /* @__PURE__ */ __name(async (arg) => {
await writeRequestBodyPromise;
clearTimeout(socketCheckTimeoutId);
_resolve(arg);
}, "resolve");
const reject = /* @__PURE__ */ __name(async (arg) => {
await writeRequestBodyPromise;
_reject(arg);
}, "reject");
if (!this.config) {
throw new Error("Node HTTP request handler config is not resolved");
}
if (abortSignal == null ? void 0 : abortSignal.aborted) {
const abortError = new Error("Request aborted");
abortError.name = "AbortError";
reject(abortError);
return;
}
const isSSL = request.protocol === "https:";
const agent = isSSL ? this.config.httpsAgent : this.config.httpAgent;
socketCheckTimeoutId = setTimeout(
() => {
this.socketWarningTimestamp = _NodeHttpHandler.checkSocketUsage(agent, this.socketWarningTimestamp);
},
this.config.socketAcquisitionWarningTimeout ?? (this.config.requestTimeout ?? 2e3) + (this.config.connectionTimeout ?? 1e3)
);
const queryString = (0, import_querystring_builder.buildQueryString)(request.query || {});
let auth = void 0;
if (request.username != null || request.password != null) {
const username = request.username ?? "";
const password = request.password ?? "";
auth = `${username}:${password}`;
}
let path = request.path;
if (queryString) {
path += `?${queryString}`;
}
if (request.fragment) {
path += `#${request.fragment}`;
}
const nodeHttpsOptions = {
headers: request.headers,
host: request.hostname,
method: request.method,
path,
port: request.port,
agent,
auth
};
const requestFunc = isSSL ? import_https.request : import_http.request;
const req = requestFunc(nodeHttpsOptions, (res) => {
const httpResponse = new import_protocol_http.HttpResponse({
statusCode: res.statusCode || -1,
reason: res.statusMessage,
headers: getTransformedHeaders(res.headers),
body: res
});
resolve({ response: httpResponse });
});
req.on("error", (err) => {
if (NODEJS_TIMEOUT_ERROR_CODES.includes(err.code)) {
reject(Object.assign(err, { name: "TimeoutError" }));
} else {
reject(err);
}
});
setConnectionTimeout(req, reject, this.config.connectionTimeout);
setSocketTimeout(req, reject, this.config.requestTimeout);
if (abortSignal) {
abortSignal.onabort = () => {
req.abort();
const abortError = new Error("Request aborted");
abortError.name = "AbortError";
reject(abortError);
};
}
const httpAgent = nodeHttpsOptions.agent;
if (typeof httpAgent === "object" && "keepAlive" in httpAgent) {
setSocketKeepAlive(req, {
// @ts-expect-error keepAlive is not public on httpAgent.
keepAlive: httpAgent.keepAlive,
// @ts-expect-error keepAliveMsecs is not public on httpAgent.
keepAliveMsecs: httpAgent.keepAliveMsecs
});
}
writeRequestBodyPromise = writeRequestBody(req, request, this.config.requestTimeout).catch(_reject);
});
}
updateHttpClientConfig(key, value) {
this.config = void 0;
this.configProvider = this.configProvider.then((config) => {
return {
...config,
[key]: value
};
});
}
httpHandlerConfigs() {
return this.config ?? {};
}
};
__name(_NodeHttpHandler, "NodeHttpHandler");
var NodeHttpHandler = _NodeHttpHandler;
// src/node-http2-handler.ts
var import_http22 = require("http2");
// src/node-http2-connection-manager.ts
var import_http2 = __toESM(require("http2"));
// src/node-http2-connection-pool.ts
var _NodeHttp2ConnectionPool = class _NodeHttp2ConnectionPool {
constructor(sessions) {
this.sessions = [];
this.sessions = sessions ?? [];
}
poll() {
if (this.sessions.length > 0) {
return this.sessions.shift();
}
}
offerLast(session) {
this.sessions.push(session);
}
contains(session) {
return this.sessions.includes(session);
}
remove(session) {
this.sessions = this.sessions.filter((s) => s !== session);
}
[Symbol.iterator]() {
return this.sessions[Symbol.iterator]();
}
destroy(connection) {
for (const session of this.sessions) {
if (session === connection) {
if (!session.destroyed) {
session.destroy();
}
}
}
}
};
__name(_NodeHttp2ConnectionPool, "NodeHttp2ConnectionPool");
var NodeHttp2ConnectionPool = _NodeHttp2ConnectionPool;
// src/node-http2-connection-manager.ts
var _NodeHttp2ConnectionManager = class _NodeHttp2ConnectionManager {
constructor(config) {
this.sessionCache = /* @__PURE__ */ new Map();
this.config = config;
if (this.config.maxConcurrency && this.config.maxConcurrency <= 0) {
throw new RangeError("maxConcurrency must be greater than zero.");
}
}
lease(requestContext, connectionConfiguration) {
const url = this.getUrlString(requestContext);
const existingPool = this.sessionCache.get(url);
if (existingPool) {
const existingSession = existingPool.poll();
if (existingSession && !this.config.disableConcurrency) {
return existingSession;
}
}
const session = import_http2.default.connect(url);
if (this.config.maxConcurrency) {
session.settings({ maxConcurrentStreams: this.config.maxConcurrency }, (err) => {
if (err) {
throw new Error(
"Fail to set maxConcurrentStreams to " + this.config.maxConcurrency + "when creating new session for " + requestContext.destination.toString()
);
}
});
}
session.unref();
const destroySessionCb = /* @__PURE__ */ __name(() => {
session.destroy();
this.deleteSession(url, session);
}, "destroySessionCb");
session.on("goaway", destroySessionCb);
session.on("error", destroySessionCb);
session.on("frameError", destroySessionCb);
session.on("close", () => this.deleteSession(url, session));
if (connectionConfiguration.requestTimeout) {
session.setTimeout(connectionConfiguration.requestTimeout, destroySessionCb);
}
const connectionPool = this.sessionCache.get(url) || new NodeHttp2ConnectionPool();
connectionPool.offerLast(session);
this.sessionCache.set(url, connectionPool);
return session;
}
/**
* Delete a session from the connection pool.
* @param authority The authority of the session to delete.
* @param session The session to delete.
*/
deleteSession(authority, session) {
const existingConnectionPool = this.sessionCache.get(authority);
if (!existingConnectionPool) {
return;
}
if (!existingConnectionPool.contains(session)) {
return;
}
existingConnectionPool.remove(session);
this.sessionCache.set(authority, existingConnectionPool);
}
release(requestContext, session) {
var _a;
const cacheKey = this.getUrlString(requestContext);
(_a = this.sessionCache.get(cacheKey)) == null ? void 0 : _a.offerLast(session);
}
destroy() {
for (const [key, connectionPool] of this.sessionCache) {
for (const session of connectionPool) {
if (!session.destroyed) {
session.destroy();
}
connectionPool.remove(session);
}
this.sessionCache.delete(key);
}
}
setMaxConcurrentStreams(maxConcurrentStreams) {
if (this.config.maxConcurrency && this.config.maxConcurrency <= 0) {
throw new RangeError("maxConcurrentStreams must be greater than zero.");
}
this.config.maxConcurrency = maxConcurrentStreams;
}
setDisableConcurrentStreams(disableConcurrentStreams) {
this.config.disableConcurrency = disableConcurrentStreams;
}
getUrlString(request) {
return request.destination.toString();
}
};
__name(_NodeHttp2ConnectionManager, "NodeHttp2ConnectionManager");
var NodeHttp2ConnectionManager = _NodeHttp2ConnectionManager;
// src/node-http2-handler.ts
var _NodeHttp2Handler = class _NodeHttp2Handler {
constructor(options) {
this.metadata = { handlerProtocol: "h2" };
this.connectionManager = new NodeHttp2ConnectionManager({});
this.configProvider = new Promise((resolve, reject) => {
if (typeof options === "function") {
options().then((opts) => {
resolve(opts || {});
}).catch(reject);
} else {
resolve(options || {});
}
});
}
/**
* @returns the input if it is an HttpHandler of any class,
* or instantiates a new instance of this handler.
*/
static create(instanceOrOptions) {
if (typeof (instanceOrOptions == null ? void 0 : instanceOrOptions.handle) === "function") {
return instanceOrOptions;
}
return new _NodeHttp2Handler(instanceOrOptions);
}
destroy() {
this.connectionManager.destroy();
}
async handle(request, { abortSignal } = {}) {
if (!this.config) {
this.config = await this.configProvider;
this.connectionManager.setDisableConcurrentStreams(this.config.disableConcurrentStreams || false);
if (this.config.maxConcurrentStreams) {
this.connectionManager.setMaxConcurrentStreams(this.config.maxConcurrentStreams);
}
}
const { requestTimeout, disableConcurrentStreams } = this.config;
return new Promise((_resolve, _reject) => {
var _a;
let fulfilled = false;
let writeRequestBodyPromise = void 0;
const resolve = /* @__PURE__ */ __name(async (arg) => {
await writeRequestBodyPromise;
_resolve(arg);
}, "resolve");
const reject = /* @__PURE__ */ __name(async (arg) => {
await writeRequestBodyPromise;
_reject(arg);
}, "reject");
if (abortSignal == null ? void 0 : abortSignal.aborted) {
fulfilled = true;
const abortError = new Error("Request aborted");
abortError.name = "AbortError";
reject(abortError);
return;
}
const { hostname, method, port, protocol, query } = request;
let auth = "";
if (request.username != null || request.password != null) {
const username = request.username ?? "";
const password = request.password ?? "";
auth = `${username}:${password}@`;
}
const authority = `${protocol}//${auth}${hostname}${port ? `:${port}` : ""}`;
const requestContext = { destination: new URL(authority) };
const session = this.connectionManager.lease(requestContext, {
requestTimeout: (_a = this.config) == null ? void 0 : _a.sessionTimeout,
disableConcurrentStreams: disableConcurrentStreams || false
});
const rejectWithDestroy = /* @__PURE__ */ __name((err) => {
if (disableConcurrentStreams) {
this.destroySession(session);
}
fulfilled = true;
reject(err);
}, "rejectWithDestroy");
const queryString = (0, import_querystring_builder.buildQueryString)(query || {});
let path = request.path;
if (queryString) {
path += `?${queryString}`;
}
if (request.fragment) {
path += `#${request.fragment}`;
}
const req = session.request({
...request.headers,
[import_http22.constants.HTTP2_HEADER_PATH]: path,
[import_http22.constants.HTTP2_HEADER_METHOD]: method
});
session.ref();
req.on("response", (headers) => {
const httpResponse = new import_protocol_http.HttpResponse({
statusCode: headers[":status"] || -1,
headers: getTransformedHeaders(headers),
body: req
});
fulfilled = true;
resolve({ response: httpResponse });
if (disableConcurrentStreams) {
session.close();
this.connectionManager.deleteSession(authority, session);
}
});
if (requestTimeout) {
req.setTimeout(requestTimeout, () => {
req.close();
const timeoutError = new Error(`Stream timed out because of no activity for ${requestTimeout} ms`);
timeoutError.name = "TimeoutError";
rejectWithDestroy(timeoutError);
});
}
if (abortSignal) {
abortSignal.onabort = () => {
req.close();
const abortError = new Error("Request aborted");
abortError.name = "AbortError";
rejectWithDestroy(abortError);
};
}
req.on("frameError", (type, code, id) => {
rejectWithDestroy(new Error(`Frame type id ${type} in stream id ${id} has failed with code ${code}.`));
});
req.on("error", rejectWithDestroy);
req.on("aborted", () => {
rejectWithDestroy(
new Error(`HTTP/2 stream is abnormally aborted in mid-communication with result code ${req.rstCode}.`)
);
});
req.on("close", () => {
session.unref();
if (disableConcurrentStreams) {
session.destroy();
}
if (!fulfilled) {
rejectWithDestroy(new Error("Unexpected error: http2 request did not get a response"));
}
});
writeRequestBodyPromise = writeRequestBody(req, request, requestTimeout);
});
}
updateHttpClientConfig(key, value) {
this.config = void 0;
this.configProvider = this.configProvider.then((config) => {
return {
...config,
[key]: value
};
});
}
httpHandlerConfigs() {
return this.config ?? {};
}
/**
* Destroys a session.
* @param session The session to destroy.
*/
destroySession(session) {
if (!session.destroyed) {
session.destroy();
}
}
};
__name(_NodeHttp2Handler, "NodeHttp2Handler");
var NodeHttp2Handler = _NodeHttp2Handler;
// src/stream-collector/collector.ts
var _Collector = class _Collector extends import_stream.Writable {
constructor() {
super(...arguments);
this.bufferedBytes = [];
}
_write(chunk, encoding, callback) {
this.bufferedBytes.push(chunk);
callback();
}
};
__name(_Collector, "Collector");
var Collector = _Collector;
// src/stream-collector/index.ts
var streamCollector = /* @__PURE__ */ __name((stream) => {
if (isReadableStreamInstance(stream)) {
return collectReadableStream(stream);
}
return new Promise((resolve, reject) => {
const collector = new Collector();
stream.pipe(collector);
stream.on("error", (err) => {
collector.end();
reject(err);
});
collector.on("error", reject);
collector.on("finish", function() {
const bytes = new Uint8Array(Buffer.concat(this.bufferedBytes));
resolve(bytes);
});
});
}, "streamCollector");
var isReadableStreamInstance = /* @__PURE__ */ __name((stream) => typeof ReadableStream === "function" && stream instanceof ReadableStream, "isReadableStreamInstance");
async function collectReadableStream(stream) {
const chunks = [];
const reader = stream.getReader();
let isDone = false;
let length = 0;
while (!isDone) {
const { done, value } = await reader.read();
if (value) {
chunks.push(value);
length += value.length;
}
isDone = done;
}
const collected = new Uint8Array(length);
let offset = 0;
for (const chunk of chunks) {
collected.set(chunk, offset);
offset += chunk.length;
}
return collected;
}
__name(collectReadableStream, "collectReadableStream");
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
DEFAULT_REQUEST_TIMEOUT,
NodeHttpHandler,
NodeHttp2Handler,
streamCollector
});

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module.exports = require("./index.js");

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module.exports = require("./index.js");

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module.exports = require("./index.js");

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module.exports = require("./index.js");

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module.exports = require("./index.js");

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module.exports = require("./index.js");

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module.exports = require("./index.js");

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module.exports = require("./index.js");

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module.exports = require("./index.js");

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module.exports = require("../index.js");

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module.exports = require("../index.js");

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module.exports = require("../index.js");

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module.exports = require("./index.js");

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export const NODEJS_TIMEOUT_ERROR_CODES = ["ECONNRESET", "EPIPE", "ETIMEDOUT"];

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const getTransformedHeaders = (headers) => {
const transformedHeaders = {};
for (const name of Object.keys(headers)) {
const headerValues = headers[name];
transformedHeaders[name] = Array.isArray(headerValues) ? headerValues.join(",") : headerValues;
}
return transformedHeaders;
};
export { getTransformedHeaders };

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export * from "./node-http-handler";
export * from "./node-http2-handler";
export * from "./stream-collector";

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import { HttpResponse } from "@smithy/protocol-http";
import { buildQueryString } from "@smithy/querystring-builder";
import { Agent as hAgent, request as hRequest } from "http";
import { Agent as hsAgent, request as hsRequest } from "https";
import { NODEJS_TIMEOUT_ERROR_CODES } from "./constants";
import { getTransformedHeaders } from "./get-transformed-headers";
import { setConnectionTimeout } from "./set-connection-timeout";
import { setSocketKeepAlive } from "./set-socket-keep-alive";
import { setSocketTimeout } from "./set-socket-timeout";
import { writeRequestBody } from "./write-request-body";
export const DEFAULT_REQUEST_TIMEOUT = 0;
export class NodeHttpHandler {
static create(instanceOrOptions) {
if (typeof instanceOrOptions?.handle === "function") {
return instanceOrOptions;
}
return new NodeHttpHandler(instanceOrOptions);
}
static checkSocketUsage(agent, socketWarningTimestamp) {
const { sockets, requests, maxSockets } = agent;
if (typeof maxSockets !== "number" || maxSockets === Infinity) {
return socketWarningTimestamp;
}
const interval = 15000;
if (Date.now() - interval < socketWarningTimestamp) {
return socketWarningTimestamp;
}
if (sockets && requests) {
for (const origin in sockets) {
const socketsInUse = sockets[origin]?.length ?? 0;
const requestsEnqueued = requests[origin]?.length ?? 0;
if (socketsInUse >= maxSockets && requestsEnqueued >= 2 * maxSockets) {
console.warn("@smithy/node-http-handler:WARN", `socket usage at capacity=${socketsInUse} and ${requestsEnqueued} additional requests are enqueued.`, "See https://docs.aws.amazon.com/sdk-for-javascript/v3/developer-guide/node-configuring-maxsockets.html", "or increase socketAcquisitionWarningTimeout=(millis) in the NodeHttpHandler config.");
return Date.now();
}
}
}
return socketWarningTimestamp;
}
constructor(options) {
this.socketWarningTimestamp = 0;
this.metadata = { handlerProtocol: "http/1.1" };
this.configProvider = new Promise((resolve, reject) => {
if (typeof options === "function") {
options()
.then((_options) => {
resolve(this.resolveDefaultConfig(_options));
})
.catch(reject);
}
else {
resolve(this.resolveDefaultConfig(options));
}
});
}
resolveDefaultConfig(options) {
const { requestTimeout, connectionTimeout, socketTimeout, httpAgent, httpsAgent } = options || {};
const keepAlive = true;
const maxSockets = 50;
return {
connectionTimeout,
requestTimeout: requestTimeout ?? socketTimeout,
httpAgent: (() => {
if (httpAgent instanceof hAgent || typeof httpAgent?.destroy === "function") {
return httpAgent;
}
return new hAgent({ keepAlive, maxSockets, ...httpAgent });
})(),
httpsAgent: (() => {
if (httpsAgent instanceof hsAgent || typeof httpsAgent?.destroy === "function") {
return httpsAgent;
}
return new hsAgent({ keepAlive, maxSockets, ...httpsAgent });
})(),
};
}
destroy() {
this.config?.httpAgent?.destroy();
this.config?.httpsAgent?.destroy();
}
async handle(request, { abortSignal } = {}) {
if (!this.config) {
this.config = await this.configProvider;
}
let socketCheckTimeoutId;
return new Promise((_resolve, _reject) => {
let writeRequestBodyPromise = undefined;
const resolve = async (arg) => {
await writeRequestBodyPromise;
clearTimeout(socketCheckTimeoutId);
_resolve(arg);
};
const reject = async (arg) => {
await writeRequestBodyPromise;
_reject(arg);
};
if (!this.config) {
throw new Error("Node HTTP request handler config is not resolved");
}
if (abortSignal?.aborted) {
const abortError = new Error("Request aborted");
abortError.name = "AbortError";
reject(abortError);
return;
}
const isSSL = request.protocol === "https:";
const agent = isSSL ? this.config.httpsAgent : this.config.httpAgent;
socketCheckTimeoutId = setTimeout(() => {
this.socketWarningTimestamp = NodeHttpHandler.checkSocketUsage(agent, this.socketWarningTimestamp);
}, this.config.socketAcquisitionWarningTimeout ??
(this.config.requestTimeout ?? 2000) + (this.config.connectionTimeout ?? 1000));
const queryString = buildQueryString(request.query || {});
let auth = undefined;
if (request.username != null || request.password != null) {
const username = request.username ?? "";
const password = request.password ?? "";
auth = `${username}:${password}`;
}
let path = request.path;
if (queryString) {
path += `?${queryString}`;
}
if (request.fragment) {
path += `#${request.fragment}`;
}
const nodeHttpsOptions = {
headers: request.headers,
host: request.hostname,
method: request.method,
path,
port: request.port,
agent,
auth,
};
const requestFunc = isSSL ? hsRequest : hRequest;
const req = requestFunc(nodeHttpsOptions, (res) => {
const httpResponse = new HttpResponse({
statusCode: res.statusCode || -1,
reason: res.statusMessage,
headers: getTransformedHeaders(res.headers),
body: res,
});
resolve({ response: httpResponse });
});
req.on("error", (err) => {
if (NODEJS_TIMEOUT_ERROR_CODES.includes(err.code)) {
reject(Object.assign(err, { name: "TimeoutError" }));
}
else {
reject(err);
}
});
setConnectionTimeout(req, reject, this.config.connectionTimeout);
setSocketTimeout(req, reject, this.config.requestTimeout);
if (abortSignal) {
abortSignal.onabort = () => {
req.abort();
const abortError = new Error("Request aborted");
abortError.name = "AbortError";
reject(abortError);
};
}
const httpAgent = nodeHttpsOptions.agent;
if (typeof httpAgent === "object" && "keepAlive" in httpAgent) {
setSocketKeepAlive(req, {
keepAlive: httpAgent.keepAlive,
keepAliveMsecs: httpAgent.keepAliveMsecs,
});
}
writeRequestBodyPromise = writeRequestBody(req, request, this.config.requestTimeout).catch(_reject);
});
}
updateHttpClientConfig(key, value) {
this.config = undefined;
this.configProvider = this.configProvider.then((config) => {
return {
...config,
[key]: value,
};
});
}
httpHandlerConfigs() {
return this.config ?? {};
}
}

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import http2 from "http2";
import { NodeHttp2ConnectionPool } from "./node-http2-connection-pool";
export class NodeHttp2ConnectionManager {
constructor(config) {
this.sessionCache = new Map();
this.config = config;
if (this.config.maxConcurrency && this.config.maxConcurrency <= 0) {
throw new RangeError("maxConcurrency must be greater than zero.");
}
}
lease(requestContext, connectionConfiguration) {
const url = this.getUrlString(requestContext);
const existingPool = this.sessionCache.get(url);
if (existingPool) {
const existingSession = existingPool.poll();
if (existingSession && !this.config.disableConcurrency) {
return existingSession;
}
}
const session = http2.connect(url);
if (this.config.maxConcurrency) {
session.settings({ maxConcurrentStreams: this.config.maxConcurrency }, (err) => {
if (err) {
throw new Error("Fail to set maxConcurrentStreams to " +
this.config.maxConcurrency +
"when creating new session for " +
requestContext.destination.toString());
}
});
}
session.unref();
const destroySessionCb = () => {
session.destroy();
this.deleteSession(url, session);
};
session.on("goaway", destroySessionCb);
session.on("error", destroySessionCb);
session.on("frameError", destroySessionCb);
session.on("close", () => this.deleteSession(url, session));
if (connectionConfiguration.requestTimeout) {
session.setTimeout(connectionConfiguration.requestTimeout, destroySessionCb);
}
const connectionPool = this.sessionCache.get(url) || new NodeHttp2ConnectionPool();
connectionPool.offerLast(session);
this.sessionCache.set(url, connectionPool);
return session;
}
deleteSession(authority, session) {
const existingConnectionPool = this.sessionCache.get(authority);
if (!existingConnectionPool) {
return;
}
if (!existingConnectionPool.contains(session)) {
return;
}
existingConnectionPool.remove(session);
this.sessionCache.set(authority, existingConnectionPool);
}
release(requestContext, session) {
const cacheKey = this.getUrlString(requestContext);
this.sessionCache.get(cacheKey)?.offerLast(session);
}
destroy() {
for (const [key, connectionPool] of this.sessionCache) {
for (const session of connectionPool) {
if (!session.destroyed) {
session.destroy();
}
connectionPool.remove(session);
}
this.sessionCache.delete(key);
}
}
setMaxConcurrentStreams(maxConcurrentStreams) {
if (this.config.maxConcurrency && this.config.maxConcurrency <= 0) {
throw new RangeError("maxConcurrentStreams must be greater than zero.");
}
this.config.maxConcurrency = maxConcurrentStreams;
}
setDisableConcurrentStreams(disableConcurrentStreams) {
this.config.disableConcurrency = disableConcurrentStreams;
}
getUrlString(request) {
return request.destination.toString();
}
}

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export class NodeHttp2ConnectionPool {
constructor(sessions) {
this.sessions = [];
this.sessions = sessions ?? [];
}
poll() {
if (this.sessions.length > 0) {
return this.sessions.shift();
}
}
offerLast(session) {
this.sessions.push(session);
}
contains(session) {
return this.sessions.includes(session);
}
remove(session) {
this.sessions = this.sessions.filter((s) => s !== session);
}
[Symbol.iterator]() {
return this.sessions[Symbol.iterator]();
}
destroy(connection) {
for (const session of this.sessions) {
if (session === connection) {
if (!session.destroyed) {
session.destroy();
}
}
}
}
}

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import { HttpResponse } from "@smithy/protocol-http";
import { buildQueryString } from "@smithy/querystring-builder";
import { constants } from "http2";
import { getTransformedHeaders } from "./get-transformed-headers";
import { NodeHttp2ConnectionManager } from "./node-http2-connection-manager";
import { writeRequestBody } from "./write-request-body";
export class NodeHttp2Handler {
static create(instanceOrOptions) {
if (typeof instanceOrOptions?.handle === "function") {
return instanceOrOptions;
}
return new NodeHttp2Handler(instanceOrOptions);
}
constructor(options) {
this.metadata = { handlerProtocol: "h2" };
this.connectionManager = new NodeHttp2ConnectionManager({});
this.configProvider = new Promise((resolve, reject) => {
if (typeof options === "function") {
options()
.then((opts) => {
resolve(opts || {});
})
.catch(reject);
}
else {
resolve(options || {});
}
});
}
destroy() {
this.connectionManager.destroy();
}
async handle(request, { abortSignal } = {}) {
if (!this.config) {
this.config = await this.configProvider;
this.connectionManager.setDisableConcurrentStreams(this.config.disableConcurrentStreams || false);
if (this.config.maxConcurrentStreams) {
this.connectionManager.setMaxConcurrentStreams(this.config.maxConcurrentStreams);
}
}
const { requestTimeout, disableConcurrentStreams } = this.config;
return new Promise((_resolve, _reject) => {
let fulfilled = false;
let writeRequestBodyPromise = undefined;
const resolve = async (arg) => {
await writeRequestBodyPromise;
_resolve(arg);
};
const reject = async (arg) => {
await writeRequestBodyPromise;
_reject(arg);
};
if (abortSignal?.aborted) {
fulfilled = true;
const abortError = new Error("Request aborted");
abortError.name = "AbortError";
reject(abortError);
return;
}
const { hostname, method, port, protocol, query } = request;
let auth = "";
if (request.username != null || request.password != null) {
const username = request.username ?? "";
const password = request.password ?? "";
auth = `${username}:${password}@`;
}
const authority = `${protocol}//${auth}${hostname}${port ? `:${port}` : ""}`;
const requestContext = { destination: new URL(authority) };
const session = this.connectionManager.lease(requestContext, {
requestTimeout: this.config?.sessionTimeout,
disableConcurrentStreams: disableConcurrentStreams || false,
});
const rejectWithDestroy = (err) => {
if (disableConcurrentStreams) {
this.destroySession(session);
}
fulfilled = true;
reject(err);
};
const queryString = buildQueryString(query || {});
let path = request.path;
if (queryString) {
path += `?${queryString}`;
}
if (request.fragment) {
path += `#${request.fragment}`;
}
const req = session.request({
...request.headers,
[constants.HTTP2_HEADER_PATH]: path,
[constants.HTTP2_HEADER_METHOD]: method,
});
session.ref();
req.on("response", (headers) => {
const httpResponse = new HttpResponse({
statusCode: headers[":status"] || -1,
headers: getTransformedHeaders(headers),
body: req,
});
fulfilled = true;
resolve({ response: httpResponse });
if (disableConcurrentStreams) {
session.close();
this.connectionManager.deleteSession(authority, session);
}
});
if (requestTimeout) {
req.setTimeout(requestTimeout, () => {
req.close();
const timeoutError = new Error(`Stream timed out because of no activity for ${requestTimeout} ms`);
timeoutError.name = "TimeoutError";
rejectWithDestroy(timeoutError);
});
}
if (abortSignal) {
abortSignal.onabort = () => {
req.close();
const abortError = new Error("Request aborted");
abortError.name = "AbortError";
rejectWithDestroy(abortError);
};
}
req.on("frameError", (type, code, id) => {
rejectWithDestroy(new Error(`Frame type id ${type} in stream id ${id} has failed with code ${code}.`));
});
req.on("error", rejectWithDestroy);
req.on("aborted", () => {
rejectWithDestroy(new Error(`HTTP/2 stream is abnormally aborted in mid-communication with result code ${req.rstCode}.`));
});
req.on("close", () => {
session.unref();
if (disableConcurrentStreams) {
session.destroy();
}
if (!fulfilled) {
rejectWithDestroy(new Error("Unexpected error: http2 request did not get a response"));
}
});
writeRequestBodyPromise = writeRequestBody(req, request, requestTimeout);
});
}
updateHttpClientConfig(key, value) {
this.config = undefined;
this.configProvider = this.configProvider.then((config) => {
return {
...config,
[key]: value,
};
});
}
httpHandlerConfigs() {
return this.config ?? {};
}
destroySession(session) {
if (!session.destroyed) {
session.destroy();
}
}
}

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import { Readable } from "stream";
export class ReadFromBuffers extends Readable {
constructor(options) {
super(options);
this.numBuffersRead = 0;
this.buffersToRead = options.buffers;
this.errorAfter = typeof options.errorAfter === "number" ? options.errorAfter : -1;
}
_read() {
if (this.errorAfter !== -1 && this.errorAfter === this.numBuffersRead) {
this.emit("error", new Error("Mock Error"));
return;
}
if (this.numBuffersRead >= this.buffersToRead.length) {
return this.push(null);
}
return this.push(this.buffersToRead[this.numBuffersRead++]);
}
}

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import { readFileSync } from "fs";
import { createServer as createHttpServer } from "http";
import { createServer as createHttp2Server } from "http2";
import { createServer as createHttpsServer } from "https";
import { join } from "path";
import { Readable } from "stream";
const fixturesDir = join(__dirname, "..", "fixtures");
const setResponseHeaders = (response, headers) => {
for (const [key, value] of Object.entries(headers)) {
response.setHeader(key, value);
}
};
const setResponseBody = (response, body) => {
if (body instanceof Readable) {
body.pipe(response);
}
else {
response.end(body);
}
};
export const createResponseFunction = (httpResp) => (request, response) => {
response.statusCode = httpResp.statusCode;
setResponseHeaders(response, httpResp.headers);
setResponseBody(response, httpResp.body);
};
export const createResponseFunctionWithDelay = (httpResp, delay) => (request, response) => {
response.statusCode = httpResp.statusCode;
setResponseHeaders(response, httpResp.headers);
setTimeout(() => setResponseBody(response, httpResp.body), delay);
};
export const createContinueResponseFunction = (httpResp) => (request, response) => {
response.writeContinue();
setTimeout(() => {
createResponseFunction(httpResp)(request, response);
}, 100);
};
export const createMockHttpsServer = () => {
const server = createHttpsServer({
key: readFileSync(join(fixturesDir, "test-server-key.pem")),
cert: readFileSync(join(fixturesDir, "test-server-cert.pem")),
});
return server;
};
export const createMockHttpServer = () => {
const server = createHttpServer();
return server;
};
export const createMockHttp2Server = () => {
const server = createHttp2Server();
return server;
};
export const createMirrorResponseFunction = (httpResp) => (request, response) => {
const bufs = [];
request.on("data", (chunk) => {
bufs.push(chunk);
});
request.on("end", () => {
response.statusCode = httpResp.statusCode;
setResponseHeaders(response, httpResp.headers);
setResponseBody(response, Buffer.concat(bufs));
});
request.on("error", (err) => {
response.statusCode = 500;
setResponseHeaders(response, httpResp.headers);
setResponseBody(response, err.message);
});
};
export const getResponseBody = (response) => {
return new Promise((resolve, reject) => {
const bufs = [];
response.body.on("data", function (d) {
bufs.push(d);
});
response.body.on("end", function () {
resolve(Buffer.concat(bufs).toString());
});
response.body.on("error", (err) => {
reject(err);
});
});
};

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export const setConnectionTimeout = (request, reject, timeoutInMs = 0) => {
if (!timeoutInMs) {
return;
}
const timeoutId = setTimeout(() => {
request.destroy();
reject(Object.assign(new Error(`Socket timed out without establishing a connection within ${timeoutInMs} ms`), {
name: "TimeoutError",
}));
}, timeoutInMs);
request.on("socket", (socket) => {
if (socket.connecting) {
socket.on("connect", () => {
clearTimeout(timeoutId);
});
}
else {
clearTimeout(timeoutId);
}
});
};

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export const setSocketKeepAlive = (request, { keepAlive, keepAliveMsecs }) => {
if (keepAlive !== true) {
return;
}
request.on("socket", (socket) => {
socket.setKeepAlive(keepAlive, keepAliveMsecs || 0);
});
};

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export const setSocketTimeout = (request, reject, timeoutInMs = 0) => {
request.setTimeout(timeoutInMs, () => {
request.destroy();
reject(Object.assign(new Error(`Connection timed out after ${timeoutInMs} ms`), { name: "TimeoutError" }));
});
};

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import { Writable } from "stream";
export class Collector extends Writable {
constructor() {
super(...arguments);
this.bufferedBytes = [];
}
_write(chunk, encoding, callback) {
this.bufferedBytes.push(chunk);
callback();
}
}

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import { Collector } from "./collector";
export const streamCollector = (stream) => {
if (isReadableStreamInstance(stream)) {
return collectReadableStream(stream);
}
return new Promise((resolve, reject) => {
const collector = new Collector();
stream.pipe(collector);
stream.on("error", (err) => {
collector.end();
reject(err);
});
collector.on("error", reject);
collector.on("finish", function () {
const bytes = new Uint8Array(Buffer.concat(this.bufferedBytes));
resolve(bytes);
});
});
};
const isReadableStreamInstance = (stream) => typeof ReadableStream === "function" && stream instanceof ReadableStream;
async function collectReadableStream(stream) {
const chunks = [];
const reader = stream.getReader();
let isDone = false;
let length = 0;
while (!isDone) {
const { done, value } = await reader.read();
if (value) {
chunks.push(value);
length += value.length;
}
isDone = done;
}
const collected = new Uint8Array(length);
let offset = 0;
for (const chunk of chunks) {
collected.set(chunk, offset);
offset += chunk.length;
}
return collected;
}

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import { Readable } from "stream";
export class ReadFromBuffers extends Readable {
constructor(options) {
super(options);
this.numBuffersRead = 0;
this.buffersToRead = options.buffers;
this.errorAfter = typeof options.errorAfter === "number" ? options.errorAfter : -1;
}
_read(size) {
if (this.errorAfter !== -1 && this.errorAfter === this.numBuffersRead) {
this.emit("error", new Error("Mock Error"));
return;
}
if (this.numBuffersRead >= this.buffersToRead.length) {
return this.push(null);
}
return this.push(this.buffersToRead[this.numBuffersRead++]);
}
}

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import { Readable } from "stream";
const MIN_WAIT_TIME = 1000;
export async function writeRequestBody(httpRequest, request, maxContinueTimeoutMs = MIN_WAIT_TIME) {
const headers = request.headers ?? {};
const expect = headers["Expect"] || headers["expect"];
let timeoutId = -1;
let hasError = false;
if (expect === "100-continue") {
await Promise.race([
new Promise((resolve) => {
timeoutId = Number(setTimeout(resolve, Math.max(MIN_WAIT_TIME, maxContinueTimeoutMs)));
}),
new Promise((resolve) => {
httpRequest.on("continue", () => {
clearTimeout(timeoutId);
resolve();
});
httpRequest.on("error", () => {
hasError = true;
clearTimeout(timeoutId);
resolve();
});
}),
]);
}
if (!hasError) {
writeBody(httpRequest, request.body);
}
}
function writeBody(httpRequest, body) {
if (body instanceof Readable) {
body.pipe(httpRequest);
return;
}
if (body) {
if (Buffer.isBuffer(body) || typeof body === "string") {
httpRequest.end(body);
return;
}
const uint8 = body;
if (typeof uint8 === "object" &&
uint8.buffer &&
typeof uint8.byteOffset === "number" &&
typeof uint8.byteLength === "number") {
httpRequest.end(Buffer.from(uint8.buffer, uint8.byteOffset, uint8.byteLength));
return;
}
httpRequest.end(Buffer.from(body));
return;
}
httpRequest.end();
}

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{
"name": "@smithy/node-http-handler",
"version": "3.0.0",
"description": "Provides a way to make requests",
"author": {
"name": "AWS SDK for JavaScript Team",
"email": "",
"url": "https://aws.amazon.com/javascript/"
},
"license": "Apache-2.0",
"main": "./dist-cjs/index.js",
"module": "./dist-es/index.js",
"types": "./dist-types/index.d.ts",
"dependencies": {
"@smithy/abort-controller": "^3.0.0",
"@smithy/protocol-http": "^4.0.0",
"@smithy/querystring-builder": "^3.0.0",
"@smithy/types": "^3.0.0",
"tslib": "^2.6.2"
},
"devDependencies": {
"@types/node": "^16.18.96",
"concurrently": "7.0.0",
"downlevel-dts": "0.10.1",
"rimraf": "3.0.2",
"typedoc": "0.23.23"
},
"engines": {
"node": ">=16.0.0"
},
"typesVersions": {
"<4.0": {
"dist-types/*": [
"dist-types/ts3.4/*"
]
}
},
"files": [
"dist-*/**"
],
"homepage": "https://github.com/awslabs/smithy-typescript/tree/main/packages/node-http-handler",
"repository": {
"type": "git",
"url": "https://github.com/awslabs/smithy-typescript.git",
"directory": "packages/node-http-handler"
},
"typedoc": {
"entryPoint": "src/index.ts"
},
"publishConfig": {
"directory": ".release/package"
}
}