UEA-Prodem

node_modules/@smithy/node-http-handler/LICENSE

@@ -0,0 +1,201 @@
+Apache License
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+
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node_modules/@smithy/node-http-handler/README.md

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+# @smithy/node-http-handler
+
+[![NPM version](https://img.shields.io/npm/v/@smithy/node-http-handler/latest.svg)](https://www.npmjs.com/package/@smithy/node-http-handler)
+[![NPM downloads](https://img.shields.io/npm/dm/@smithy/node-http-handler.svg)](https://www.npmjs.com/package/@smithy/node-http-handler)
+
+This package implements the default `requestHandler` for Node.js using `node:http`, `node:https`, and `node:http2`.
+
+For an example on how `requestHandler`s are used by Smithy generated SDK clients, refer to
+the [AWS SDK for JavaScript (v3) supplemental docs](https://github.com/aws/aws-sdk-js-v3/blob/main/supplemental-docs/CLIENTS.md#request-handler-requesthandler).

node_modules/@smithy/node-http-handler/dist-cjs/index.js

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+'use strict';
+
+var protocols = require('@smithy/core/protocols');
+var node_https = require('node:https');
+var node_stream = require('node:stream');
+var http2 = require('node:http2');
+
+function buildAbortError(abortSignal) {
+    const reason = abortSignal && typeof abortSignal === "object" && "reason" in abortSignal
+        ? abortSignal.reason
+        : undefined;
+    if (reason) {
+        if (reason instanceof Error) {
+            const abortError = new Error("Request aborted");
+            abortError.name = "AbortError";
+            abortError.cause = reason;
+            return abortError;
+        }
+        const abortError = new Error(String(reason));
+        abortError.name = "AbortError";
+        return abortError;
+    }
+    const abortError = new Error("Request aborted");
+    abortError.name = "AbortError";
+    return abortError;
+}
+
+const NODEJS_TIMEOUT_ERROR_CODES = ["ECONNRESET", "EPIPE", "ETIMEDOUT"];
+
+const getTransformedHeaders = (headers) => {
+    const transformedHeaders = {};
+    for (const name in headers) {
+        const headerValues = headers[name];
+        transformedHeaders[name] = Array.isArray(headerValues) ? headerValues.join(",") : headerValues;
+    }
+    return transformedHeaders;
+};
+
+const timing = {
+    setTimeout: (cb, ms) => setTimeout(cb, ms),
+    clearTimeout: (timeoutId) => clearTimeout(timeoutId),
+};
+
+const DEFER_EVENT_LISTENER_TIME$2 = 1000;
+const setConnectionTimeout = (request, reject, timeoutInMs = 0) => {
+    if (!timeoutInMs) {
+        return -1;
+    }
+    const registerTimeout = (offset) => {
+        const timeoutId = timing.setTimeout(() => {
+            request.destroy();
+            reject(Object.assign(new Error(`@smithy/node-http-handler - the request socket did not establish a connection with the server within the configured timeout of ${timeoutInMs} ms.`), {
+                name: "TimeoutError",
+            }));
+        }, timeoutInMs - offset);
+        const doWithSocket = (socket) => {
+            if (socket?.connecting) {
+                socket.on("connect", () => {
+                    timing.clearTimeout(timeoutId);
+                });
+            }
+            else {
+                timing.clearTimeout(timeoutId);
+            }
+        };
+        if (request.socket) {
+            doWithSocket(request.socket);
+        }
+        else {
+            request.on("socket", doWithSocket);
+        }
+    };
+    if (timeoutInMs < 2000) {
+        registerTimeout(0);
+        return 0;
+    }
+    return timing.setTimeout(registerTimeout.bind(null, DEFER_EVENT_LISTENER_TIME$2), DEFER_EVENT_LISTENER_TIME$2);
+};
+
+const setRequestTimeout = (req, reject, timeoutInMs = 0, throwOnRequestTimeout, logger) => {
+    if (timeoutInMs) {
+        return timing.setTimeout(() => {
+            let msg = `@smithy/node-http-handler - [${throwOnRequestTimeout ? "ERROR" : "WARN"}] a request has exceeded the configured ${timeoutInMs} ms requestTimeout.`;
+            if (throwOnRequestTimeout) {
+                const error = Object.assign(new Error(msg), {
+                    name: "TimeoutError",
+                    code: "ETIMEDOUT",
+                });
+                req.destroy(error);
+                reject(error);
+            }
+            else {
+                msg += ` Init client requestHandler with throwOnRequestTimeout=true to turn this into an error.`;
+                logger?.warn?.(msg);
+            }
+        }, timeoutInMs);
+    }
+    return -1;
+};
+
+const DEFER_EVENT_LISTENER_TIME$1 = 3000;
+const setSocketKeepAlive = (request, { keepAlive, keepAliveMsecs }, deferTimeMs = DEFER_EVENT_LISTENER_TIME$1) => {
+    if (keepAlive !== true) {
+        return -1;
+    }
+    const registerListener = () => {
+        if (request.socket) {
+            request.socket.setKeepAlive(keepAlive, keepAliveMsecs || 0);
+        }
+        else {
+            request.on("socket", (socket) => {
+                socket.setKeepAlive(keepAlive, keepAliveMsecs || 0);
+            });
+        }
+    };
+    if (deferTimeMs === 0) {
+        registerListener();
+        return 0;
+    }
+    return timing.setTimeout(registerListener, deferTimeMs);
+};
+
+const DEFER_EVENT_LISTENER_TIME = 3000;
+const setSocketTimeout = (request, reject, timeoutInMs = 0) => {
+    const registerTimeout = (offset) => {
+        const timeout = timeoutInMs - offset;
+        const onTimeout = () => {
+            request.destroy();
+            reject(Object.assign(new Error(`@smithy/node-http-handler - the request socket timed out after ${timeoutInMs} ms of inactivity (configured by client requestHandler).`), { name: "TimeoutError" }));
+        };
+        if (request.socket) {
+            request.socket.setTimeout(timeout, onTimeout);
+            request.on("close", () => request.socket?.removeListener("timeout", onTimeout));
+        }
+        else {
+            request.setTimeout(timeout, onTimeout);
+        }
+    };
+    if (0 < timeoutInMs && timeoutInMs < 6000) {
+        registerTimeout(0);
+        return 0;
+    }
+    return timing.setTimeout(registerTimeout.bind(null, timeoutInMs === 0 ? 0 : DEFER_EVENT_LISTENER_TIME), DEFER_EVENT_LISTENER_TIME);
+};
+
+const MIN_WAIT_TIME = 6_000;
+async function writeRequestBody(httpRequest, request, maxContinueTimeoutMs = MIN_WAIT_TIME, externalAgent = false) {
+    const headers = request.headers;
+    const expect = headers ? headers.Expect || headers.expect : undefined;
+    let timeoutId = -1;
+    let sendBody = true;
+    if (!externalAgent && expect === "100-continue") {
+        sendBody = await Promise.race([
+            new Promise((resolve) => {
+                timeoutId = Number(timing.setTimeout(() => resolve(true), Math.max(MIN_WAIT_TIME, maxContinueTimeoutMs)));
+            }),
+            new Promise((resolve) => {
+                httpRequest.on("continue", () => {
+                    timing.clearTimeout(timeoutId);
+                    resolve(true);
+                });
+                httpRequest.on("response", () => {
+                    timing.clearTimeout(timeoutId);
+                    resolve(false);
+                });
+                httpRequest.on("error", () => {
+                    timing.clearTimeout(timeoutId);
+                    resolve(false);
+                });
+            }),
+        ]);
+    }
+    if (sendBody) {
+        writeBody(httpRequest, request.body);
+    }
+}
+function writeBody(httpRequest, body) {
+    if (body instanceof node_stream.Readable) {
+        body.pipe(httpRequest);
+        return;
+    }
+    if (body) {
+        const isBuffer = Buffer.isBuffer(body);
+        const isString = typeof body === "string";
+        if (isBuffer || isString) {
+            if (isBuffer && body.byteLength === 0) {
+                httpRequest.end();
+            }
+            else {
+                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();
+}
+
+const DEFAULT_REQUEST_TIMEOUT = 0;
+let hAgent = undefined;
+let hRequest = undefined;
+class NodeHttpHandler {
+    config;
+    configProvider;
+    socketWarningTimestamp = 0;
+    externalAgent = false;
+    metadata = { handlerProtocol: "http/1.1" };
+    static create(instanceOrOptions) {
+        if (typeof instanceOrOptions?.handle === "function") {
+            return instanceOrOptions;
+        }
+        return new NodeHttpHandler(instanceOrOptions);
+    }
+    static checkSocketUsage(agent, socketWarningTimestamp, logger = console) {
+        const { sockets, requests, maxSockets } = agent;
+        if (typeof maxSockets !== "number" || maxSockets === Infinity) {
+            return socketWarningTimestamp;
+        }
+        const interval = 15_000;
+        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) {
+                    logger?.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.configProvider = new Promise((resolve, reject) => {
+            if (typeof options === "function") {
+                options()
+                    .then((_options) => {
+                    resolve(this.resolveDefaultConfig(_options));
+                })
+                    .catch(reject);
+            }
+            else {
+                resolve(this.resolveDefaultConfig(options));
+            }
+        });
+    }
+    destroy() {
+        this.config?.httpAgent?.destroy();
+        this.config?.httpsAgent?.destroy();
+    }
+    async handle(request, { abortSignal, requestTimeout } = {}) {
+        if (!this.config) {
+            this.config = await this.configProvider;
+        }
+        const config = this.config;
+        const isSSL = request.protocol === "https:";
+        if (!isSSL && !this.config.httpAgent) {
+            this.config.httpAgent = await this.config.httpAgentProvider();
+        }
+        return new Promise((_resolve, _reject) => {
+            let writeRequestBodyPromise = undefined;
+            let socketWarningTimeoutId = -1;
+            let connectionTimeoutId = -1;
+            let requestTimeoutId = -1;
+            let socketTimeoutId = -1;
+            let keepAliveTimeoutId = -1;
+            const clearTimeouts = () => {
+                timing.clearTimeout(socketWarningTimeoutId);
+                timing.clearTimeout(connectionTimeoutId);
+                timing.clearTimeout(requestTimeoutId);
+                timing.clearTimeout(socketTimeoutId);
+                timing.clearTimeout(keepAliveTimeoutId);
+            };
+            const resolve = async (arg) => {
+                await writeRequestBodyPromise;
+                clearTimeouts();
+                _resolve(arg);
+            };
+            const reject = async (arg) => {
+                await writeRequestBodyPromise;
+                clearTimeouts();
+                _reject(arg);
+            };
+            if (abortSignal?.aborted) {
+                const abortError = buildAbortError(abortSignal);
+                reject(abortError);
+                return;
+            }
+            const headers = request.headers;
+            const expectContinue = headers ? (headers.Expect ?? headers.expect) === "100-continue" : false;
+            let agent = isSSL ? config.httpsAgent : config.httpAgent;
+            if (expectContinue && !this.externalAgent) {
+                agent = new (isSSL ? node_https.Agent : hAgent)({
+                    keepAlive: false,
+                    maxSockets: Infinity,
+                });
+            }
+            socketWarningTimeoutId = timing.setTimeout(() => {
+                this.socketWarningTimestamp = NodeHttpHandler.checkSocketUsage(agent, this.socketWarningTimestamp, config.logger);
+            }, config.socketAcquisitionWarningTimeout ?? (config.requestTimeout ?? 2000) + (config.connectionTimeout ?? 1000));
+            const queryString = request.query ? protocols.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}`;
+            }
+            let hostname = request.hostname ?? "";
+            if (hostname[0] === "[" && hostname.endsWith("]")) {
+                hostname = request.hostname.slice(1, -1);
+            }
+            else {
+                hostname = request.hostname;
+            }
+            const nodeHttpsOptions = {
+                headers: request.headers,
+                host: hostname,
+                method: request.method,
+                path,
+                port: request.port,
+                agent,
+                auth,
+            };
+            const requestFunc = isSSL ? node_https.request : hRequest;
+            const req = requestFunc(nodeHttpsOptions, (res) => {
+                const httpResponse = new protocols.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);
+                }
+            });
+            if (abortSignal) {
+                const onAbort = () => {
+                    req.destroy();
+                    const abortError = buildAbortError(abortSignal);
+                    reject(abortError);
+                };
+                if (typeof abortSignal.addEventListener === "function") {
+                    const signal = abortSignal;
+                    signal.addEventListener("abort", onAbort, { once: true });
+                    req.once("close", () => signal.removeEventListener("abort", onAbort));
+                }
+                else {
+                    abortSignal.onabort = onAbort;
+                }
+            }
+            const effectiveRequestTimeout = requestTimeout ?? config.requestTimeout;
+            connectionTimeoutId = setConnectionTimeout(req, reject, config.connectionTimeout);
+            requestTimeoutId = setRequestTimeout(req, reject, effectiveRequestTimeout, config.throwOnRequestTimeout, config.logger ?? console);
+            socketTimeoutId = setSocketTimeout(req, reject, config.socketTimeout);
+            const httpAgent = nodeHttpsOptions.agent;
+            if (typeof httpAgent === "object" && "keepAlive" in httpAgent) {
+                keepAliveTimeoutId = setSocketKeepAlive(req, {
+                    keepAlive: httpAgent.keepAlive,
+                    keepAliveMsecs: httpAgent.keepAliveMsecs,
+                });
+            }
+            writeRequestBodyPromise = writeRequestBody(req, request, effectiveRequestTimeout, this.externalAgent).catch((e) => {
+                clearTimeouts();
+                return _reject(e);
+            });
+        });
+    }
+    updateHttpClientConfig(key, value) {
+        this.config = undefined;
+        this.configProvider = this.configProvider.then((config) => {
+            return {
+                ...config,
+                [key]: value,
+            };
+        });
+    }
+    httpHandlerConfigs() {
+        return this.config ?? {};
+    }
+    resolveDefaultConfig(options) {
+        const { requestTimeout, connectionTimeout, socketTimeout, socketAcquisitionWarningTimeout, httpAgent, httpsAgent, throwOnRequestTimeout, logger, } = options || {};
+        const keepAlive = true;
+        const maxSockets = 50;
+        return {
+            connectionTimeout,
+            requestTimeout,
+            socketTimeout,
+            socketAcquisitionWarningTimeout,
+            throwOnRequestTimeout,
+            httpAgentProvider: async () => {
+                const node_http = await import('node:http');
+                const { Agent, request } = node_http.default ?? node_http;
+                hRequest = request;
+                hAgent = Agent;
+                if (httpAgent instanceof hAgent || typeof httpAgent?.destroy === "function") {
+                    this.externalAgent = true;
+                    return httpAgent;
+                }
+                return new hAgent({ keepAlive, maxSockets, ...httpAgent });
+            },
+            httpsAgent: (() => {
+                if (httpsAgent instanceof node_https.Agent || typeof httpsAgent?.destroy === "function") {
+                    this.externalAgent = true;
+                    return httpsAgent;
+                }
+                return new node_https.Agent({ keepAlive, maxSockets, ...httpsAgent });
+            })(),
+            logger,
+        };
+    }
+}
+
+const ids = new Uint16Array(1);
+class ClientHttp2SessionRef {
+    id = ids[0]++;
+    total = 0;
+    max = 0;
+    session;
+    refs = 0;
+    constructor(session) {
+        session.unref();
+        this.session = session;
+    }
+    retain() {
+        if (this.session.destroyed) {
+            throw new Error("@smithy/node-http-handler - cannot acquire reference to destroyed session.");
+        }
+        this.refs += 1;
+        this.total += 1;
+        this.max = Math.max(this.refs, this.max);
+        this.session.ref();
+    }
+    free() {
+        if (this.session.destroyed) {
+            return;
+        }
+        this.refs -= 1;
+        if (this.refs === 0) {
+            this.session.unref();
+        }
+        if (this.refs < 0) {
+            throw new Error("@smithy/node-http-handler - ClientHttp2Session refcount at zero, cannot decrement.");
+        }
+    }
+    deref() {
+        return this.session;
+    }
+    close() {
+        if (!this.session.closed) {
+            this.session.close();
+        }
+    }
+    destroy() {
+        this.refs = 0;
+        if (!this.session.destroyed) {
+            this.session.destroy();
+        }
+    }
+    useCount() {
+        return this.refs;
+    }
+}
+
+class NodeHttp2ConnectionPool {
+    sessions = [];
+    maxConcurrency = 0;
+    constructor(sessions) {
+        this.sessions = (sessions ?? []).map((session) => new ClientHttp2SessionRef(session));
+    }
+    poll() {
+        let cleanup = false;
+        for (const session of this.sessions) {
+            if (session.deref().destroyed) {
+                cleanup = true;
+                continue;
+            }
+            if (!this.maxConcurrency || session.useCount() < this.maxConcurrency) {
+                return session;
+            }
+        }
+        if (cleanup) {
+            for (const session of this.sessions) {
+                if (session.deref().destroyed) {
+                    this.remove(session);
+                }
+            }
+        }
+    }
+    offerLast(ref) {
+        this.sessions.push(ref);
+    }
+    remove(ref) {
+        const ix = this.sessions.indexOf(ref);
+        if (ix > -1) {
+            this.sessions.splice(ix, 1);
+        }
+    }
+    [Symbol.iterator]() {
+        return this.sessions[Symbol.iterator]();
+    }
+    setMaxConcurrency(maxConcurrency) {
+        this.maxConcurrency = maxConcurrency;
+    }
+    destroy(ref) {
+        this.remove(ref);
+        ref.destroy();
+    }
+}
+
+class NodeHttp2ConnectionManager {
+    config;
+    connectOptions;
+    connectionPools = new Map();
+    constructor(config) {
+        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 pool = this.getPool(url);
+        if (!this.config.disableConcurrency && !connectionConfiguration.isEventStream) {
+            const available = pool.poll();
+            if (available) {
+                available.retain();
+                return available;
+            }
+        }
+        const ref = new ClientHttp2SessionRef(this.connect(url));
+        const session = ref.deref();
+        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());
+                }
+            });
+        }
+        const graceful = () => {
+            this.removeFromPoolAndClose(url, ref);
+        };
+        const ensureDestroyed = () => {
+            this.removeFromPoolAndCheckedDestroy(url, ref);
+        };
+        session.on("goaway", graceful);
+        session.on("error", ensureDestroyed);
+        session.on("frameError", ensureDestroyed);
+        session.on("close", ensureDestroyed);
+        if (connectionConfiguration.requestTimeout) {
+            session.setTimeout(connectionConfiguration.requestTimeout, ensureDestroyed);
+        }
+        pool.offerLast(ref);
+        ref.retain();
+        return ref;
+    }
+    release(_requestContext, ref) {
+        ref.free();
+    }
+    createIsolatedSession(requestContext, connectionConfiguration) {
+        const url = this.getUrlString(requestContext);
+        const ref = new ClientHttp2SessionRef(this.connect(url));
+        const session = ref.deref();
+        session.settings({ maxConcurrentStreams: 1 });
+        const ensureDestroyed = () => {
+            ref.destroy();
+        };
+        session.on("error", ensureDestroyed);
+        session.on("frameError", ensureDestroyed);
+        session.on("close", ensureDestroyed);
+        if (connectionConfiguration.requestTimeout) {
+            session.setTimeout(connectionConfiguration.requestTimeout, ensureDestroyed);
+        }
+        ref.retain();
+        return ref;
+    }
+    destroy() {
+        for (const [url, connectionPool] of this.connectionPools) {
+            for (const session of [...connectionPool]) {
+                session.destroy();
+            }
+            this.connectionPools.delete(url);
+        }
+    }
+    setMaxConcurrentStreams(maxConcurrentStreams) {
+        if (maxConcurrentStreams && maxConcurrentStreams <= 0) {
+            throw new RangeError("maxConcurrentStreams must be greater than zero.");
+        }
+        this.config.maxConcurrency = maxConcurrentStreams;
+        for (const pool of this.connectionPools.values()) {
+            pool.setMaxConcurrency(maxConcurrentStreams);
+        }
+    }
+    setDisableConcurrentStreams(disableConcurrentStreams) {
+        this.config.disableConcurrency = disableConcurrentStreams;
+    }
+    setNodeHttp2ConnectOptions(nodeHttp2ConnectOptions) {
+        this.connectOptions = nodeHttp2ConnectOptions;
+    }
+    debug() {
+        const pools = {};
+        for (const [url, pool] of this.connectionPools) {
+            const sessions = [];
+            for (const ref of pool) {
+                sessions.push({
+                    id: ref.id,
+                    active: ref.useCount(),
+                    maxConcurrent: ref.max,
+                    totalRequests: ref.total,
+                });
+            }
+            pools[url] = { sessions };
+        }
+        return pools;
+    }
+    removeFromPoolAndClose(authority, ref) {
+        this.connectionPools.get(authority)?.remove(ref);
+        ref.close();
+    }
+    removeFromPoolAndCheckedDestroy(authority, ref) {
+        this.connectionPools.get(authority)?.remove(ref);
+        ref.destroy();
+    }
+    getPool(url) {
+        if (!this.connectionPools.has(url)) {
+            const pool = new NodeHttp2ConnectionPool();
+            if (this.config.maxConcurrency) {
+                pool.setMaxConcurrency(this.config.maxConcurrency);
+            }
+            this.connectionPools.set(url, pool);
+        }
+        return this.connectionPools.get(url);
+    }
+    getUrlString(request) {
+        return request.destination.toString();
+    }
+    connect(url) {
+        return this.connectOptions === undefined ? http2.connect(url) : http2.connect(url, this.connectOptions);
+    }
+}
+
+const { constants } = http2;
+class NodeHttp2Handler {
+    config;
+    configProvider;
+    metadata = { handlerProtocol: "h2" };
+    connectionManager = new NodeHttp2ConnectionManager({});
+    static create(instanceOrOptions) {
+        if (typeof instanceOrOptions?.handle === "function") {
+            return instanceOrOptions;
+        }
+        return new NodeHttp2Handler(instanceOrOptions);
+    }
+    constructor(options) {
+        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, requestTimeout, isEventStream } = {}) {
+        if (!this.config) {
+            this.config = await this.configProvider;
+            const { disableConcurrentStreams, maxConcurrentStreams, nodeHttp2ConnectOptions } = this.config;
+            this.connectionManager.setDisableConcurrentStreams(disableConcurrentStreams ?? false);
+            if (maxConcurrentStreams) {
+                this.connectionManager.setMaxConcurrentStreams(maxConcurrentStreams);
+            }
+            if (nodeHttp2ConnectOptions) {
+                this.connectionManager.setNodeHttp2ConnectOptions(nodeHttp2ConnectOptions);
+            }
+        }
+        const { requestTimeout: configRequestTimeout, disableConcurrentStreams } = this.config;
+        const useIsolatedSession = disableConcurrentStreams || isEventStream;
+        const effectiveRequestTimeout = requestTimeout ?? configRequestTimeout;
+        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 = buildAbortError(abortSignal);
+                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 connectConfig = {
+                requestTimeout: this.config?.sessionTimeout,
+                isEventStream,
+            };
+            const ref = useIsolatedSession
+                ? this.connectionManager.createIsolatedSession(requestContext, connectConfig)
+                : this.connectionManager.lease(requestContext, connectConfig);
+            const session = ref.deref();
+            const rejectWithDestroy = (err) => {
+                if (useIsolatedSession) {
+                    ref.destroy();
+                }
+                fulfilled = true;
+                reject(err);
+            };
+            const queryString = query ? protocols.buildQueryString(query) : "";
+            let path = request.path;
+            if (queryString) {
+                path += `?${queryString}`;
+            }
+            if (request.fragment) {
+                path += `#${request.fragment}`;
+            }
+            const clientHttp2Stream = session.request({
+                ...request.headers,
+                [constants.HTTP2_HEADER_PATH]: path,
+                [constants.HTTP2_HEADER_METHOD]: method,
+            });
+            if (effectiveRequestTimeout) {
+                clientHttp2Stream.setTimeout(effectiveRequestTimeout, () => {
+                    clientHttp2Stream.close();
+                    const timeoutError = new Error(`Stream timed out because of no activity for ${effectiveRequestTimeout} ms`);
+                    timeoutError.name = "TimeoutError";
+                    rejectWithDestroy(timeoutError);
+                });
+            }
+            if (abortSignal) {
+                const onAbort = () => {
+                    clientHttp2Stream.close();
+                    const abortError = buildAbortError(abortSignal);
+                    rejectWithDestroy(abortError);
+                };
+                if (typeof abortSignal.addEventListener === "function") {
+                    const signal = abortSignal;
+                    signal.addEventListener("abort", onAbort, { once: true });
+                    clientHttp2Stream.once("close", () => signal.removeEventListener("abort", onAbort));
+                }
+                else {
+                    abortSignal.onabort = onAbort;
+                }
+            }
+            clientHttp2Stream.on("frameError", (type, code, id) => {
+                rejectWithDestroy(new Error(`Frame type id ${type} in stream id ${id} has failed with code ${code}.`));
+            });
+            clientHttp2Stream.on("error", rejectWithDestroy);
+            clientHttp2Stream.on("aborted", () => {
+                rejectWithDestroy(new Error(`HTTP/2 stream is abnormally aborted in mid-communication with result code ${clientHttp2Stream.rstCode}.`));
+            });
+            clientHttp2Stream.on("response", (headers) => {
+                const httpResponse = new protocols.HttpResponse({
+                    statusCode: headers[":status"] ?? -1,
+                    headers: getTransformedHeaders(headers),
+                    body: clientHttp2Stream,
+                });
+                fulfilled = true;
+                resolve({ response: httpResponse });
+                if (useIsolatedSession) {
+                    session.close();
+                }
+            });
+            clientHttp2Stream.on("close", () => {
+                if (useIsolatedSession) {
+                    ref.destroy();
+                }
+                else {
+                    this.connectionManager.release(requestContext, ref);
+                }
+                if (!fulfilled) {
+                    rejectWithDestroy(new Error("Unexpected error: http2 request did not get a response"));
+                }
+            });
+            writeRequestBodyPromise = writeRequestBody(clientHttp2Stream, request, effectiveRequestTimeout);
+        });
+    }
+    updateHttpClientConfig(key, value) {
+        this.config = undefined;
+        this.configProvider = this.configProvider.then((config) => {
+            return {
+                ...config,
+                [key]: value,
+            };
+        });
+    }
+    httpHandlerConfigs() {
+        return this.config ?? {};
+    }
+}
+
+class Collector extends node_stream.Writable {
+    bufferedBytes = [];
+    _write(chunk, encoding, callback) {
+        this.bufferedBytes.push(chunk);
+        callback();
+    }
+}
+
+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;
+}
+
+exports.DEFAULT_REQUEST_TIMEOUT = DEFAULT_REQUEST_TIMEOUT;
+exports.NodeHttp2Handler = NodeHttp2Handler;
+exports.NodeHttpHandler = NodeHttpHandler;
+exports.streamCollector = streamCollector;

node_modules/@smithy/node-http-handler/dist-es/build-abort-error.js

@@ -0,0 +1,19 @@
+export function buildAbortError(abortSignal) {
+    const reason = abortSignal && typeof abortSignal === "object" && "reason" in abortSignal
+        ? abortSignal.reason
+        : undefined;
+    if (reason) {
+        if (reason instanceof Error) {
+            const abortError = new Error("Request aborted");
+            abortError.name = "AbortError";
+            abortError.cause = reason;
+            return abortError;
+        }
+        const abortError = new Error(String(reason));
+        abortError.name = "AbortError";
+        return abortError;
+    }
+    const abortError = new Error("Request aborted");
+    abortError.name = "AbortError";
+    return abortError;
+}

node_modules/@smithy/node-http-handler/dist-es/constants.js

@@ -0,0 +1 @@
+export const NODEJS_TIMEOUT_ERROR_CODES = ["ECONNRESET", "EPIPE", "ETIMEDOUT"];

node_modules/@smithy/node-http-handler/dist-es/get-transformed-headers.js

@@ -0,0 +1,9 @@
+const getTransformedHeaders = (headers) => {
+    const transformedHeaders = {};
+    for (const name in headers) {
+        const headerValues = headers[name];
+        transformedHeaders[name] = Array.isArray(headerValues) ? headerValues.join(",") : headerValues;
+    }
+    return transformedHeaders;
+};
+export { getTransformedHeaders };

node_modules/@smithy/node-http-handler/dist-es/http2/ClientHttp2SessionRef.js

@@ -0,0 +1,50 @@
+const ids = new Uint16Array(1);
+export class ClientHttp2SessionRef {
+    id = ids[0]++;
+    total = 0;
+    max = 0;
+    session;
+    refs = 0;
+    constructor(session) {
+        session.unref();
+        this.session = session;
+    }
+    retain() {
+        if (this.session.destroyed) {
+            throw new Error("@smithy/node-http-handler - cannot acquire reference to destroyed session.");
+        }
+        this.refs += 1;
+        this.total += 1;
+        this.max = Math.max(this.refs, this.max);
+        this.session.ref();
+    }
+    free() {
+        if (this.session.destroyed) {
+            return;
+        }
+        this.refs -= 1;
+        if (this.refs === 0) {
+            this.session.unref();
+        }
+        if (this.refs < 0) {
+            throw new Error("@smithy/node-http-handler - ClientHttp2Session refcount at zero, cannot decrement.");
+        }
+    }
+    deref() {
+        return this.session;
+    }
+    close() {
+        if (!this.session.closed) {
+            this.session.close();
+        }
+    }
+    destroy() {
+        this.refs = 0;
+        if (!this.session.destroyed) {
+            this.session.destroy();
+        }
+    }
+    useCount() {
+        return this.refs;
+    }
+}

node_modules/@smithy/node-http-handler/dist-es/index.js

@@ -0,0 +1,3 @@
+export * from "./node-http-handler";
+export * from "./node-http2-handler";
+export * from "./stream-collector";

node_modules/@smithy/node-http-handler/dist-es/node-http-handler.js

@@ -0,0 +1,241 @@
+import { HttpResponse, buildQueryString } from "@smithy/core/protocols";
+import { buildAbortError } from "./build-abort-error";
+import { NODEJS_TIMEOUT_ERROR_CODES } from "./constants";
+import { getTransformedHeaders } from "./get-transformed-headers";
+import { node_https } from "./node-https";
+import { setConnectionTimeout } from "./set-connection-timeout";
+import { setRequestTimeout } from "./set-request-timeout";
+import { setSocketKeepAlive } from "./set-socket-keep-alive";
+import { setSocketTimeout } from "./set-socket-timeout";
+import { timing } from "./timing";
+import { writeRequestBody } from "./write-request-body";
+export const DEFAULT_REQUEST_TIMEOUT = 0;
+let hAgent = undefined;
+let hRequest = undefined;
+export class NodeHttpHandler {
+    config;
+    configProvider;
+    socketWarningTimestamp = 0;
+    externalAgent = false;
+    metadata = { handlerProtocol: "http/1.1" };
+    static create(instanceOrOptions) {
+        if (typeof instanceOrOptions?.handle === "function") {
+            return instanceOrOptions;
+        }
+        return new NodeHttpHandler(instanceOrOptions);
+    }
+    static checkSocketUsage(agent, socketWarningTimestamp, logger = console) {
+        const { sockets, requests, maxSockets } = agent;
+        if (typeof maxSockets !== "number" || maxSockets === Infinity) {
+            return socketWarningTimestamp;
+        }
+        const interval = 15_000;
+        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) {
+                    logger?.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.configProvider = new Promise((resolve, reject) => {
+            if (typeof options === "function") {
+                options()
+                    .then((_options) => {
+                    resolve(this.resolveDefaultConfig(_options));
+                })
+                    .catch(reject);
+            }
+            else {
+                resolve(this.resolveDefaultConfig(options));
+            }
+        });
+    }
+    destroy() {
+        this.config?.httpAgent?.destroy();
+        this.config?.httpsAgent?.destroy();
+    }
+    async handle(request, { abortSignal, requestTimeout } = {}) {
+        if (!this.config) {
+            this.config = await this.configProvider;
+        }
+        const config = this.config;
+        const isSSL = request.protocol === "https:";
+        if (!isSSL && !this.config.httpAgent) {
+            this.config.httpAgent = await this.config.httpAgentProvider();
+        }
+        return new Promise((_resolve, _reject) => {
+            let writeRequestBodyPromise = undefined;
+            let socketWarningTimeoutId = -1;
+            let connectionTimeoutId = -1;
+            let requestTimeoutId = -1;
+            let socketTimeoutId = -1;
+            let keepAliveTimeoutId = -1;
+            const clearTimeouts = () => {
+                timing.clearTimeout(socketWarningTimeoutId);
+                timing.clearTimeout(connectionTimeoutId);
+                timing.clearTimeout(requestTimeoutId);
+                timing.clearTimeout(socketTimeoutId);
+                timing.clearTimeout(keepAliveTimeoutId);
+            };
+            const resolve = async (arg) => {
+                await writeRequestBodyPromise;
+                clearTimeouts();
+                _resolve(arg);
+            };
+            const reject = async (arg) => {
+                await writeRequestBodyPromise;
+                clearTimeouts();
+                _reject(arg);
+            };
+            if (abortSignal?.aborted) {
+                const abortError = buildAbortError(abortSignal);
+                reject(abortError);
+                return;
+            }
+            const headers = request.headers;
+            const expectContinue = headers ? (headers.Expect ?? headers.expect) === "100-continue" : false;
+            let agent = isSSL ? config.httpsAgent : config.httpAgent;
+            if (expectContinue && !this.externalAgent) {
+                agent = new (isSSL ? node_https.Agent : hAgent)({
+                    keepAlive: false,
+                    maxSockets: Infinity,
+                });
+            }
+            socketWarningTimeoutId = timing.setTimeout(() => {
+                this.socketWarningTimestamp = NodeHttpHandler.checkSocketUsage(agent, this.socketWarningTimestamp, config.logger);
+            }, config.socketAcquisitionWarningTimeout ?? (config.requestTimeout ?? 2000) + (config.connectionTimeout ?? 1000));
+            const queryString = request.query ? 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}`;
+            }
+            let hostname = request.hostname ?? "";
+            if (hostname[0] === "[" && hostname.endsWith("]")) {
+                hostname = request.hostname.slice(1, -1);
+            }
+            else {
+                hostname = request.hostname;
+            }
+            const nodeHttpsOptions = {
+                headers: request.headers,
+                host: hostname,
+                method: request.method,
+                path,
+                port: request.port,
+                agent,
+                auth,
+            };
+            const requestFunc = isSSL ? node_https.request : 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);
+                }
+            });
+            if (abortSignal) {
+                const onAbort = () => {
+                    req.destroy();
+                    const abortError = buildAbortError(abortSignal);
+                    reject(abortError);
+                };
+                if (typeof abortSignal.addEventListener === "function") {
+                    const signal = abortSignal;
+                    signal.addEventListener("abort", onAbort, { once: true });
+                    req.once("close", () => signal.removeEventListener("abort", onAbort));
+                }
+                else {
+                    abortSignal.onabort = onAbort;
+                }
+            }
+            const effectiveRequestTimeout = requestTimeout ?? config.requestTimeout;
+            connectionTimeoutId = setConnectionTimeout(req, reject, config.connectionTimeout);
+            requestTimeoutId = setRequestTimeout(req, reject, effectiveRequestTimeout, config.throwOnRequestTimeout, config.logger ?? console);
+            socketTimeoutId = setSocketTimeout(req, reject, config.socketTimeout);
+            const httpAgent = nodeHttpsOptions.agent;
+            if (typeof httpAgent === "object" && "keepAlive" in httpAgent) {
+                keepAliveTimeoutId = setSocketKeepAlive(req, {
+                    keepAlive: httpAgent.keepAlive,
+                    keepAliveMsecs: httpAgent.keepAliveMsecs,
+                });
+            }
+            writeRequestBodyPromise = writeRequestBody(req, request, effectiveRequestTimeout, this.externalAgent).catch((e) => {
+                clearTimeouts();
+                return _reject(e);
+            });
+        });
+    }
+    updateHttpClientConfig(key, value) {
+        this.config = undefined;
+        this.configProvider = this.configProvider.then((config) => {
+            return {
+                ...config,
+                [key]: value,
+            };
+        });
+    }
+    httpHandlerConfigs() {
+        return this.config ?? {};
+    }
+    resolveDefaultConfig(options) {
+        const { requestTimeout, connectionTimeout, socketTimeout, socketAcquisitionWarningTimeout, httpAgent, httpsAgent, throwOnRequestTimeout, logger, } = options || {};
+        const keepAlive = true;
+        const maxSockets = 50;
+        return {
+            connectionTimeout,
+            requestTimeout,
+            socketTimeout,
+            socketAcquisitionWarningTimeout,
+            throwOnRequestTimeout,
+            httpAgentProvider: async () => {
+                const node_http = await import("node:http");
+                const { Agent, request } = node_http.default ?? node_http;
+                hRequest = request;
+                hAgent = Agent;
+                if (httpAgent instanceof hAgent || typeof httpAgent?.destroy === "function") {
+                    this.externalAgent = true;
+                    return httpAgent;
+                }
+                return new hAgent({ keepAlive, maxSockets, ...httpAgent });
+            },
+            httpsAgent: (() => {
+                if (httpsAgent instanceof node_https.Agent || typeof httpsAgent?.destroy === "function") {
+                    this.externalAgent = true;
+                    return httpsAgent;
+                }
+                return new node_https.Agent({ keepAlive, maxSockets, ...httpsAgent });
+            })(),
+            logger,
+        };
+    }
+}

node_modules/@smithy/node-http-handler/dist-es/node-http2-connection-manager.js

@@ -0,0 +1,136 @@
+import http2 from "node:http2";
+import { ClientHttp2SessionRef } from "./http2/ClientHttp2SessionRef";
+import { NodeHttp2ConnectionPool } from "./node-http2-connection-pool";
+export class NodeHttp2ConnectionManager {
+    config;
+    connectOptions;
+    connectionPools = new Map();
+    constructor(config) {
+        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 pool = this.getPool(url);
+        if (!this.config.disableConcurrency && !connectionConfiguration.isEventStream) {
+            const available = pool.poll();
+            if (available) {
+                available.retain();
+                return available;
+            }
+        }
+        const ref = new ClientHttp2SessionRef(this.connect(url));
+        const session = ref.deref();
+        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());
+                }
+            });
+        }
+        const graceful = () => {
+            this.removeFromPoolAndClose(url, ref);
+        };
+        const ensureDestroyed = () => {
+            this.removeFromPoolAndCheckedDestroy(url, ref);
+        };
+        session.on("goaway", graceful);
+        session.on("error", ensureDestroyed);
+        session.on("frameError", ensureDestroyed);
+        session.on("close", ensureDestroyed);
+        if (connectionConfiguration.requestTimeout) {
+            session.setTimeout(connectionConfiguration.requestTimeout, ensureDestroyed);
+        }
+        pool.offerLast(ref);
+        ref.retain();
+        return ref;
+    }
+    release(_requestContext, ref) {
+        ref.free();
+    }
+    createIsolatedSession(requestContext, connectionConfiguration) {
+        const url = this.getUrlString(requestContext);
+        const ref = new ClientHttp2SessionRef(this.connect(url));
+        const session = ref.deref();
+        session.settings({ maxConcurrentStreams: 1 });
+        const ensureDestroyed = () => {
+            ref.destroy();
+        };
+        session.on("error", ensureDestroyed);
+        session.on("frameError", ensureDestroyed);
+        session.on("close", ensureDestroyed);
+        if (connectionConfiguration.requestTimeout) {
+            session.setTimeout(connectionConfiguration.requestTimeout, ensureDestroyed);
+        }
+        ref.retain();
+        return ref;
+    }
+    destroy() {
+        for (const [url, connectionPool] of this.connectionPools) {
+            for (const session of [...connectionPool]) {
+                session.destroy();
+            }
+            this.connectionPools.delete(url);
+        }
+    }
+    setMaxConcurrentStreams(maxConcurrentStreams) {
+        if (maxConcurrentStreams && maxConcurrentStreams <= 0) {
+            throw new RangeError("maxConcurrentStreams must be greater than zero.");
+        }
+        this.config.maxConcurrency = maxConcurrentStreams;
+        for (const pool of this.connectionPools.values()) {
+            pool.setMaxConcurrency(maxConcurrentStreams);
+        }
+    }
+    setDisableConcurrentStreams(disableConcurrentStreams) {
+        this.config.disableConcurrency = disableConcurrentStreams;
+    }
+    setNodeHttp2ConnectOptions(nodeHttp2ConnectOptions) {
+        this.connectOptions = nodeHttp2ConnectOptions;
+    }
+    debug() {
+        const pools = {};
+        for (const [url, pool] of this.connectionPools) {
+            const sessions = [];
+            for (const ref of pool) {
+                sessions.push({
+                    id: ref.id,
+                    active: ref.useCount(),
+                    maxConcurrent: ref.max,
+                    totalRequests: ref.total,
+                });
+            }
+            pools[url] = { sessions };
+        }
+        return pools;
+    }
+    removeFromPoolAndClose(authority, ref) {
+        this.connectionPools.get(authority)?.remove(ref);
+        ref.close();
+    }
+    removeFromPoolAndCheckedDestroy(authority, ref) {
+        this.connectionPools.get(authority)?.remove(ref);
+        ref.destroy();
+    }
+    getPool(url) {
+        if (!this.connectionPools.has(url)) {
+            const pool = new NodeHttp2ConnectionPool();
+            if (this.config.maxConcurrency) {
+                pool.setMaxConcurrency(this.config.maxConcurrency);
+            }
+            this.connectionPools.set(url, pool);
+        }
+        return this.connectionPools.get(url);
+    }
+    getUrlString(request) {
+        return request.destination.toString();
+    }
+    connect(url) {
+        return this.connectOptions === undefined ? http2.connect(url) : http2.connect(url, this.connectOptions);
+    }
+}

node_modules/@smithy/node-http-handler/dist-es/node-http2-connection-pool.js

@@ -0,0 +1,46 @@
+import { ClientHttp2SessionRef } from "./http2/ClientHttp2SessionRef";
+export class NodeHttp2ConnectionPool {
+    sessions = [];
+    maxConcurrency = 0;
+    constructor(sessions) {
+        this.sessions = (sessions ?? []).map((session) => new ClientHttp2SessionRef(session));
+    }
+    poll() {
+        let cleanup = false;
+        for (const session of this.sessions) {
+            if (session.deref().destroyed) {
+                cleanup = true;
+                continue;
+            }
+            if (!this.maxConcurrency || session.useCount() < this.maxConcurrency) {
+                return session;
+            }
+        }
+        if (cleanup) {
+            for (const session of this.sessions) {
+                if (session.deref().destroyed) {
+                    this.remove(session);
+                }
+            }
+        }
+    }
+    offerLast(ref) {
+        this.sessions.push(ref);
+    }
+    remove(ref) {
+        const ix = this.sessions.indexOf(ref);
+        if (ix > -1) {
+            this.sessions.splice(ix, 1);
+        }
+    }
+    [Symbol.iterator]() {
+        return this.sessions[Symbol.iterator]();
+    }
+    setMaxConcurrency(maxConcurrency) {
+        this.maxConcurrency = maxConcurrency;
+    }
+    destroy(ref) {
+        this.remove(ref);
+        ref.destroy();
+    }
+}

node_modules/@smithy/node-http-handler/dist-es/node-http2-handler.js

@@ -0,0 +1,173 @@
+import { HttpResponse, buildQueryString } from "@smithy/core/protocols";
+import { buildAbortError } from "./build-abort-error";
+import { getTransformedHeaders } from "./get-transformed-headers";
+import { node_http2 } from "./node-http2";
+import { NodeHttp2ConnectionManager } from "./node-http2-connection-manager";
+import { writeRequestBody } from "./write-request-body";
+const { constants } = node_http2;
+export class NodeHttp2Handler {
+    config;
+    configProvider;
+    metadata = { handlerProtocol: "h2" };
+    connectionManager = new NodeHttp2ConnectionManager({});
+    static create(instanceOrOptions) {
+        if (typeof instanceOrOptions?.handle === "function") {
+            return instanceOrOptions;
+        }
+        return new NodeHttp2Handler(instanceOrOptions);
+    }
+    constructor(options) {
+        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, requestTimeout, isEventStream } = {}) {
+        if (!this.config) {
+            this.config = await this.configProvider;
+            const { disableConcurrentStreams, maxConcurrentStreams, nodeHttp2ConnectOptions } = this.config;
+            this.connectionManager.setDisableConcurrentStreams(disableConcurrentStreams ?? false);
+            if (maxConcurrentStreams) {
+                this.connectionManager.setMaxConcurrentStreams(maxConcurrentStreams);
+            }
+            if (nodeHttp2ConnectOptions) {
+                this.connectionManager.setNodeHttp2ConnectOptions(nodeHttp2ConnectOptions);
+            }
+        }
+        const { requestTimeout: configRequestTimeout, disableConcurrentStreams } = this.config;
+        const useIsolatedSession = disableConcurrentStreams || isEventStream;
+        const effectiveRequestTimeout = requestTimeout ?? configRequestTimeout;
+        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 = buildAbortError(abortSignal);
+                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 ? `:${port}` : ""}`;
+            const requestContext = { destination: new URL(authority) };
+            const connectConfig = {
+                requestTimeout: this.config?.sessionTimeout,
+                isEventStream,
+            };
+            const ref = useIsolatedSession
+                ? this.connectionManager.createIsolatedSession(requestContext, connectConfig)
+                : this.connectionManager.lease(requestContext, connectConfig);
+            const session = ref.deref();
+            const rejectWithDestroy = (err) => {
+                if (useIsolatedSession) {
+                    ref.destroy();
+                }
+                fulfilled = true;
+                reject(err);
+            };
+            const queryString = query ? buildQueryString(query) : "";
+            let path = request.path;
+            if (queryString) {
+                path += `?${queryString}`;
+            }
+            if (request.fragment) {
+                path += `#${request.fragment}`;
+            }
+            const clientHttp2Stream = session.request({
+                ...request.headers,
+                [constants.HTTP2_HEADER_PATH]: path,
+                [constants.HTTP2_HEADER_METHOD]: method,
+            });
+            if (effectiveRequestTimeout) {
+                clientHttp2Stream.setTimeout(effectiveRequestTimeout, () => {
+                    clientHttp2Stream.close();
+                    const timeoutError = new Error(`Stream timed out because of no activity for ${effectiveRequestTimeout} ms`);
+                    timeoutError.name = "TimeoutError";
+                    rejectWithDestroy(timeoutError);
+                });
+            }
+            if (abortSignal) {
+                const onAbort = () => {
+                    clientHttp2Stream.close();
+                    const abortError = buildAbortError(abortSignal);
+                    rejectWithDestroy(abortError);
+                };
+                if (typeof abortSignal.addEventListener === "function") {
+                    const signal = abortSignal;
+                    signal.addEventListener("abort", onAbort, { once: true });
+                    clientHttp2Stream.once("close", () => signal.removeEventListener("abort", onAbort));
+                }
+                else {
+                    abortSignal.onabort = onAbort;
+                }
+            }
+            clientHttp2Stream.on("frameError", (type, code, id) => {
+                rejectWithDestroy(new Error(`Frame type id ${type} in stream id ${id} has failed with code ${code}.`));
+            });
+            clientHttp2Stream.on("error", rejectWithDestroy);
+            clientHttp2Stream.on("aborted", () => {
+                rejectWithDestroy(new Error(`HTTP/2 stream is abnormally aborted in mid-communication with result code ${clientHttp2Stream.rstCode}.`));
+            });
+            clientHttp2Stream.on("response", (headers) => {
+                const httpResponse = new HttpResponse({
+                    statusCode: headers[":status"] ?? -1,
+                    headers: getTransformedHeaders(headers),
+                    body: clientHttp2Stream,
+                });
+                fulfilled = true;
+                resolve({ response: httpResponse });
+                if (useIsolatedSession) {
+                    session.close();
+                }
+            });
+            clientHttp2Stream.on("close", () => {
+                if (useIsolatedSession) {
+                    ref.destroy();
+                }
+                else {
+                    this.connectionManager.release(requestContext, ref);
+                }
+                if (!fulfilled) {
+                    rejectWithDestroy(new Error("Unexpected error: http2 request did not get a response"));
+                }
+            });
+            writeRequestBodyPromise = writeRequestBody(clientHttp2Stream, request, effectiveRequestTimeout);
+        });
+    }
+    updateHttpClientConfig(key, value) {
+        this.config = undefined;
+        this.configProvider = this.configProvider.then((config) => {
+            return {
+                ...config,
+                [key]: value,
+            };
+        });
+    }
+    httpHandlerConfigs() {
+        return this.config ?? {};
+    }
+}

node_modules/@smithy/node-http-handler/dist-es/node-http2.js

@@ -0,0 +1,2 @@
+import node_http2 from "node:http2";
+export { node_http2 };

node_modules/@smithy/node-http-handler/dist-es/node-https.js

@@ -0,0 +1,2 @@
+import node_https from "node:https";
+export { node_https };

node_modules/@smithy/node-http-handler/dist-es/set-connection-timeout.js

@@ -0,0 +1,36 @@
+import { timing } from "./timing";
+const DEFER_EVENT_LISTENER_TIME = 1000;
+export const setConnectionTimeout = (request, reject, timeoutInMs = 0) => {
+    if (!timeoutInMs) {
+        return -1;
+    }
+    const registerTimeout = (offset) => {
+        const timeoutId = timing.setTimeout(() => {
+            request.destroy();
+            reject(Object.assign(new Error(`@smithy/node-http-handler - the request socket did not establish a connection with the server within the configured timeout of ${timeoutInMs} ms.`), {
+                name: "TimeoutError",
+            }));
+        }, timeoutInMs - offset);
+        const doWithSocket = (socket) => {
+            if (socket?.connecting) {
+                socket.on("connect", () => {
+                    timing.clearTimeout(timeoutId);
+                });
+            }
+            else {
+                timing.clearTimeout(timeoutId);
+            }
+        };
+        if (request.socket) {
+            doWithSocket(request.socket);
+        }
+        else {
+            request.on("socket", doWithSocket);
+        }
+    };
+    if (timeoutInMs < 2000) {
+        registerTimeout(0);
+        return 0;
+    }
+    return timing.setTimeout(registerTimeout.bind(null, DEFER_EVENT_LISTENER_TIME), DEFER_EVENT_LISTENER_TIME);
+};

node_modules/@smithy/node-http-handler/dist-es/set-request-timeout.js

@@ -0,0 +1,21 @@
+import { timing } from "./timing";
+export const setRequestTimeout = (req, reject, timeoutInMs = 0, throwOnRequestTimeout, logger) => {
+    if (timeoutInMs) {
+        return timing.setTimeout(() => {
+            let msg = `@smithy/node-http-handler - [${throwOnRequestTimeout ? "ERROR" : "WARN"}] a request has exceeded the configured ${timeoutInMs} ms requestTimeout.`;
+            if (throwOnRequestTimeout) {
+                const error = Object.assign(new Error(msg), {
+                    name: "TimeoutError",
+                    code: "ETIMEDOUT",
+                });
+                req.destroy(error);
+                reject(error);
+            }
+            else {
+                msg += ` Init client requestHandler with throwOnRequestTimeout=true to turn this into an error.`;
+                logger?.warn?.(msg);
+            }
+        }, timeoutInMs);
+    }
+    return -1;
+};

node_modules/@smithy/node-http-handler/dist-es/set-socket-keep-alive.js

@@ -0,0 +1,22 @@
+import { timing } from "./timing";
+const DEFER_EVENT_LISTENER_TIME = 3000;
+export const setSocketKeepAlive = (request, { keepAlive, keepAliveMsecs }, deferTimeMs = DEFER_EVENT_LISTENER_TIME) => {
+    if (keepAlive !== true) {
+        return -1;
+    }
+    const registerListener = () => {
+        if (request.socket) {
+            request.socket.setKeepAlive(keepAlive, keepAliveMsecs || 0);
+        }
+        else {
+            request.on("socket", (socket) => {
+                socket.setKeepAlive(keepAlive, keepAliveMsecs || 0);
+            });
+        }
+    };
+    if (deferTimeMs === 0) {
+        registerListener();
+        return 0;
+    }
+    return timing.setTimeout(registerListener, deferTimeMs);
+};

node_modules/@smithy/node-http-handler/dist-es/set-socket-timeout.js

@@ -0,0 +1,23 @@
+import { timing } from "./timing";
+const DEFER_EVENT_LISTENER_TIME = 3000;
+export const setSocketTimeout = (request, reject, timeoutInMs = 0) => {
+    const registerTimeout = (offset) => {
+        const timeout = timeoutInMs - offset;
+        const onTimeout = () => {
+            request.destroy();
+            reject(Object.assign(new Error(`@smithy/node-http-handler - the request socket timed out after ${timeoutInMs} ms of inactivity (configured by client requestHandler).`), { name: "TimeoutError" }));
+        };
+        if (request.socket) {
+            request.socket.setTimeout(timeout, onTimeout);
+            request.on("close", () => request.socket?.removeListener("timeout", onTimeout));
+        }
+        else {
+            request.setTimeout(timeout, onTimeout);
+        }
+    };
+    if (0 < timeoutInMs && timeoutInMs < 6000) {
+        registerTimeout(0);
+        return 0;
+    }
+    return timing.setTimeout(registerTimeout.bind(null, timeoutInMs === 0 ? 0 : DEFER_EVENT_LISTENER_TIME), DEFER_EVENT_LISTENER_TIME);
+};

node_modules/@smithy/node-http-handler/dist-es/stream-collector/collector.js

@@ -0,0 +1,8 @@
+import { Writable } from "node:stream";
+export class Collector extends Writable {
+    bufferedBytes = [];
+    _write(chunk, encoding, callback) {
+        this.bufferedBytes.push(chunk);
+        callback();
+    }
+}

node_modules/@smithy/node-http-handler/dist-es/stream-collector/index.js

@@ -0,0 +1,41 @@
+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;
+}

node_modules/@smithy/node-http-handler/dist-es/timing.js

@@ -0,0 +1,4 @@
+export const timing = {
+    setTimeout: (cb, ms) => setTimeout(cb, ms),
+    clearTimeout: (timeoutId) => clearTimeout(timeoutId),
+};

node_modules/@smithy/node-http-handler/dist-es/write-request-body.js

@@ -0,0 +1,63 @@
+import { Readable } from "node:stream";
+import { timing } from "./timing";
+const MIN_WAIT_TIME = 6_000;
+export async function writeRequestBody(httpRequest, request, maxContinueTimeoutMs = MIN_WAIT_TIME, externalAgent = false) {
+    const headers = request.headers;
+    const expect = headers ? headers.Expect || headers.expect : undefined;
+    let timeoutId = -1;
+    let sendBody = true;
+    if (!externalAgent && expect === "100-continue") {
+        sendBody = await Promise.race([
+            new Promise((resolve) => {
+                timeoutId = Number(timing.setTimeout(() => resolve(true), Math.max(MIN_WAIT_TIME, maxContinueTimeoutMs)));
+            }),
+            new Promise((resolve) => {
+                httpRequest.on("continue", () => {
+                    timing.clearTimeout(timeoutId);
+                    resolve(true);
+                });
+                httpRequest.on("response", () => {
+                    timing.clearTimeout(timeoutId);
+                    resolve(false);
+                });
+                httpRequest.on("error", () => {
+                    timing.clearTimeout(timeoutId);
+                    resolve(false);
+                });
+            }),
+        ]);
+    }
+    if (sendBody) {
+        writeBody(httpRequest, request.body);
+    }
+}
+function writeBody(httpRequest, body) {
+    if (body instanceof Readable) {
+        body.pipe(httpRequest);
+        return;
+    }
+    if (body) {
+        const isBuffer = Buffer.isBuffer(body);
+        const isString = typeof body === "string";
+        if (isBuffer || isString) {
+            if (isBuffer && body.byteLength === 0) {
+                httpRequest.end();
+            }
+            else {
+                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();
+}

node_modules/@smithy/node-http-handler/dist-types/build-abort-error.d.ts

@@ -0,0 +1,10 @@
+/**
+ * Builds an abort error, using the AbortSignal's reason if available.
+ *
+ * @param abortSignal - Optional AbortSignal that may contain a reason.
+ * @returns A new Error with name "AbortError". If the signal has a reason that's
+ *          already an Error, the reason is set as `cause`. Otherwise creates a
+ *          new Error with the reason as the message, or "Request aborted" if no
+ *          reason.
+ */
+export declare function buildAbortError(abortSignal?: unknown): Error;

node_modules/@smithy/node-http-handler/dist-types/constants.d.ts

@@ -0,0 +1,5 @@
+/**
+ * Node.js system error codes that indicate timeout.
+ * @deprecated use NODEJS_TIMEOUT_ERROR_CODES from @smithy/service-error-classification/constants
+ */
+export declare const NODEJS_TIMEOUT_ERROR_CODES: string[];

node_modules/@smithy/node-http-handler/dist-types/get-transformed-headers.d.ts

@@ -0,0 +1,4 @@
+import type { IncomingHttpHeaders } from "node:http2";
+import type { HeaderBag } from "@smithy/types";
+declare const getTransformedHeaders: (headers: IncomingHttpHeaders) => HeaderBag;
+export { getTransformedHeaders };

node_modules/@smithy/node-http-handler/dist-types/http2/ClientHttp2SessionRef.d.ts

@@ -0,0 +1,46 @@
+import type { ClientHttp2Session } from "node:http2";
+/**
+ * Shared access ref counter for ClientHttp2Session, where owners are
+ * in-flight requests.
+ *
+ * @internal
+ * @since 4.6.0
+ */
+export declare class ClientHttp2SessionRef {
+    readonly id: number;
+    /**
+     * Total calls to retain for this session.
+     */
+    total: number;
+    /**
+     * Max ref count observed.
+     */
+    max: number;
+    private readonly session;
+    private refs;
+    constructor(session: ClientHttp2Session);
+    /**
+     * Signal that the session is entering a request span and has an additional owning request.
+     * This must be called when beginning a request using the session.
+     */
+    retain(): void;
+    /**
+     * Release reference to session, to be called when it exits request span, indicating one fewer owning request.
+     * When reaching zero, the session is unref'd.
+     * This must be called when concluding a request using the session.
+     */
+    free(): void;
+    /**
+     * Access the session (don't call ref/unref on it).
+     */
+    deref(): ClientHttp2Session;
+    /**
+     * Allow open refs to free on their own.
+     */
+    close(): void;
+    destroy(): void;
+    /**
+     * @returns the current number of active references (in-flight requests).
+     */
+    useCount(): number;
+}

node_modules/@smithy/node-http-handler/dist-types/index.d.ts

@@ -0,0 +1,3 @@
+export * from "./node-http-handler";
+export * from "./node-http2-handler";
+export * from "./stream-collector";

node_modules/@smithy/node-http-handler/dist-types/node-http-handler.d.ts

@@ -0,0 +1,47 @@
+import type { Agent as hAgentType } from "node:http";
+import type { Agent as hsAgentType } from "node:https";
+import { HttpResponse, type HttpHandler, type HttpRequest } from "@smithy/core/protocols";
+import type { HttpHandlerOptions, Logger, NodeHttpHandlerOptions, Provider } from "@smithy/types";
+export { NodeHttpHandlerOptions };
+/**
+ * A default of 0 means no timeout.
+ *
+ * @public
+ */
+export declare const DEFAULT_REQUEST_TIMEOUT = 0;
+/**
+ * A request handler that uses the Node.js http and https modules.
+ *
+ * @public
+ */
+export declare class NodeHttpHandler implements HttpHandler<NodeHttpHandlerOptions> {
+    private config?;
+    private configProvider;
+    private socketWarningTimestamp;
+    private externalAgent;
+    readonly metadata: {
+        handlerProtocol: string;
+    };
+    /**
+     * @returns the input if it is an HttpHandler of any class,
+     * or instantiates a new instance of this handler.
+     */
+    static create(instanceOrOptions?: HttpHandler<any> | NodeHttpHandlerOptions | Provider<NodeHttpHandlerOptions | void>): NodeHttpHandler | HttpHandler<any>;
+    /**
+     * @internal
+     *
+     * @param agent - http(s) agent in use by the NodeHttpHandler instance.
+     * @param socketWarningTimestamp - last socket usage check timestamp.
+     * @param logger - channel for the warning.
+     * @returns timestamp of last emitted warning.
+     */
+    static checkSocketUsage(agent: hAgentType | hsAgentType, socketWarningTimestamp: number, logger?: Logger): number;
+    constructor(options?: NodeHttpHandlerOptions | Provider<NodeHttpHandlerOptions | void>);
+    destroy(): void;
+    handle(request: HttpRequest, { abortSignal, requestTimeout }?: HttpHandlerOptions): Promise<{
+        response: HttpResponse;
+    }>;
+    updateHttpClientConfig(key: keyof NodeHttpHandlerOptions, value: NodeHttpHandlerOptions[typeof key]): void;
+    httpHandlerConfigs(): NodeHttpHandlerOptions;
+    private resolveDefaultConfig;
+}

node_modules/@smithy/node-http-handler/dist-types/node-http2-connection-manager.d.ts

@@ -0,0 +1,46 @@
+import { type ClientSessionOptions, type SecureClientSessionOptions } from "node:http2";
+import type { ConnectConfiguration, ConnectionManager, ConnectionManagerConfiguration, RequestContext } from "@smithy/types";
+import { ClientHttp2SessionRef } from "./http2/ClientHttp2SessionRef";
+/**
+ * This class previously implemented the ConnectionManager<ClientHttp2Session> interface,
+ * but this class isn't exported from this package, except as a private property of NodeHttp2Handler.
+ *
+ * @since 4.6.0
+ * @internal
+ */
+export declare class NodeHttp2ConnectionManager implements ConnectionManager<ClientHttp2SessionRef> {
+    private config;
+    private connectOptions?;
+    private readonly connectionPools;
+    constructor(config: ConnectionManagerConfiguration);
+    /**
+     * Acquire a session for making a request.
+     */
+    lease(requestContext: RequestContext, connectionConfiguration: ConnectConfiguration): ClientHttp2SessionRef;
+    /**
+     * Signal that a request using this session has completed.
+     *
+     * The session remains in its pool for reuse.
+     * This method is not called for isolated sessions.
+     */
+    release(_requestContext: RequestContext, ref: ClientHttp2SessionRef): void;
+    /**
+     * Create an isolated session that isn't part of the connection pools.
+     * For use in event-streams or when concurrency is turned off.
+     */
+    createIsolatedSession(requestContext: RequestContext, connectionConfiguration: ConnectConfiguration): ClientHttp2SessionRef;
+    destroy(): void;
+    setMaxConcurrentStreams(maxConcurrentStreams: number): void;
+    setDisableConcurrentStreams(disableConcurrentStreams: boolean): void;
+    setNodeHttp2ConnectOptions(nodeHttp2ConnectOptions: Partial<SecureClientSessionOptions | ClientSessionOptions>): void;
+    /**
+     * @internal
+     * @returns a snapshot of the state of all connection pools and their sessions.
+     */
+    debug(): Record<string, any>;
+    private removeFromPoolAndClose;
+    private removeFromPoolAndCheckedDestroy;
+    private getPool;
+    private getUrlString;
+    private connect;
+}

node_modules/@smithy/node-http-handler/dist-types/node-http2-connection-pool.d.ts

@@ -0,0 +1,36 @@
+import type { ClientHttp2Session } from "node:http2";
+import type { ConnectionPool } from "@smithy/types";
+import { ClientHttp2SessionRef } from "./http2/ClientHttp2SessionRef";
+/**
+ * These are keyed by URL, therefore all sessions within this class' state
+ * are for the same URL.
+ *
+ * Sessions remain in the pool for their entire lifetime (until destroyed or
+ * removed). The pool tracks capacity via each session's ref count.
+ *
+ * Interface implementation changed from ConnectionPool<ClientHttp2Session>.
+ * @since 4.6.0
+ * @internal
+ */
+export declare class NodeHttp2ConnectionPool implements ConnectionPool<ClientHttp2SessionRef> {
+    private readonly sessions;
+    private maxConcurrency;
+    constructor(sessions?: ClientHttp2Session[]);
+    /**
+     * Find a session with available capacity (refs < maxConcurrency).
+     * Returns undefined if all sessions are at capacity or the pool is empty.
+     */
+    poll(): ClientHttp2SessionRef | undefined;
+    /**
+     * Add a session to the pool.
+     */
+    offerLast(ref: ClientHttp2SessionRef): void;
+    remove(ref: ClientHttp2SessionRef): void;
+    [Symbol.iterator](): ArrayIterator<ClientHttp2SessionRef>;
+    setMaxConcurrency(maxConcurrency: number): void;
+    /**
+     * This is unused, but part of the interface.
+     * @deprecated
+     */
+    destroy(ref: ClientHttp2SessionRef): void;
+}

node_modules/@smithy/node-http-handler/dist-types/node-http2-handler.d.ts

@@ -0,0 +1,76 @@
+import type { ClientSessionOptions, SecureClientSessionOptions } from "node:http2";
+import { HttpResponse, type HttpHandler, type HttpRequest } from "@smithy/core/protocols";
+import type { HttpHandlerOptions, Provider } from "@smithy/types";
+/**
+ * Represents the http2 options that can be passed to a node http2 client.
+ * @public
+ */
+export interface NodeHttp2HandlerOptions {
+    /**
+     * The maximum time in milliseconds that a stream may remain idle before it
+     * is closed.
+     */
+    requestTimeout?: number;
+    /**
+     * The maximum time in milliseconds that a session or socket may remain idle
+     * before it is closed.
+     * https://nodejs.org/docs/latest-v12.x/api/http2.html#http2_http2session_and_sockets
+     */
+    sessionTimeout?: number;
+    /**
+     * Disables processing concurrent streams on a ClientHttp2Session instance. When set
+     * to true, a new session instance is created for each request to a URL.
+     * **Default:** false.
+     * https://nodejs.org/api/http2.html#http2_class_clienthttp2session
+     */
+    disableConcurrentStreams?: boolean;
+    /**
+     * Maximum number of concurrent Http2Stream instances per ClientHttp2Session. Each session
+     * may have up to 2^31-1 Http2Stream instances over its lifetime.
+     * This value must be greater than or equal to 0.
+     * https://nodejs.org/api/http2.html#class-http2stream
+     */
+    maxConcurrentStreams?: number;
+    /**
+     * A set of raw options that will be passed to http2.connect.
+     * https://nodejs.org/api/http2.html#http2connectauthority-options-listener
+     */
+    nodeHttp2ConnectOptions?: Partial<SecureClientSessionOptions | ClientSessionOptions>;
+}
+/**
+ * This is derived from the smithyContext object. This signals to the NodeHttp2Handler specifically
+ * that the connection pool should not be used to acquire a connection. The event stream should
+ * have its own new connection.
+ *
+ * This does not apply to WebSocket event streams, since there is no pooling.
+ *
+ * @internal
+ */
+type EventStreamSignal = {
+    isEventStream?: boolean;
+};
+/**
+ * A request handler using the node:http2 package.
+ * @public
+ */
+export declare class NodeHttp2Handler implements HttpHandler<NodeHttp2HandlerOptions> {
+    private config?;
+    private configProvider;
+    readonly metadata: {
+        handlerProtocol: string;
+    };
+    private readonly connectionManager;
+    /**
+     * @returns the input if it is an HttpHandler of any class,
+     * or instantiates a new instance of this handler.
+     */
+    static create(instanceOrOptions?: HttpHandler<any> | NodeHttp2HandlerOptions | Provider<NodeHttp2HandlerOptions | void>): HttpHandler<any> | NodeHttp2Handler;
+    constructor(options?: NodeHttp2HandlerOptions | Provider<NodeHttp2HandlerOptions | void>);
+    destroy(): void;
+    handle(request: HttpRequest, { abortSignal, requestTimeout, isEventStream }?: HttpHandlerOptions & EventStreamSignal): Promise<{
+        response: HttpResponse;
+    }>;
+    updateHttpClientConfig(key: keyof NodeHttp2HandlerOptions, value: NodeHttp2HandlerOptions[typeof key]): void;
+    httpHandlerConfigs(): NodeHttp2HandlerOptions;
+}
+export {};

node_modules/@smithy/node-http-handler/dist-types/node-http2.d.ts

@@ -0,0 +1,2 @@
+import node_http2 from "node:http2";
+export { node_http2 };

node_modules/@smithy/node-http-handler/dist-types/node-https.d.ts

@@ -0,0 +1,2 @@
+import node_https from "node:https";
+export { node_https };

node_modules/@smithy/node-http-handler/dist-types/set-connection-timeout.d.ts

@@ -0,0 +1,2 @@
+import type { ClientRequest } from "node:http";
+export declare const setConnectionTimeout: (request: ClientRequest, reject: (err: Error) => void, timeoutInMs?: number) => NodeJS.Timeout | number;

node_modules/@smithy/node-http-handler/dist-types/set-request-timeout.d.ts

@@ -0,0 +1,6 @@
+import type { ClientRequest } from "node:http";
+import type { Logger } from "@smithy/types";
+/**
+ * @internal
+ */
+export declare const setRequestTimeout: (req: ClientRequest, reject: (err: Error) => void, timeoutInMs?: number, throwOnRequestTimeout?: boolean, logger?: Logger) => number;

node_modules/@smithy/node-http-handler/dist-types/set-socket-keep-alive.d.ts

@@ -0,0 +1,6 @@
+import type { ClientRequest } from "node:http";
+export interface SocketKeepAliveOptions {
+    keepAlive: boolean;
+    keepAliveMsecs?: number;
+}
+export declare const setSocketKeepAlive: (request: ClientRequest, { keepAlive, keepAliveMsecs }: SocketKeepAliveOptions, deferTimeMs?: number) => NodeJS.Timeout | number;

node_modules/@smithy/node-http-handler/dist-types/set-socket-timeout.d.ts

@@ -0,0 +1,2 @@
+import type { ClientRequest } from "node:http";
+export declare const setSocketTimeout: (request: ClientRequest, reject: (err: Error) => void, timeoutInMs?: number) => NodeJS.Timeout | number;

node_modules/@smithy/node-http-handler/dist-types/stream-collector/collector.d.ts

@@ -0,0 +1,5 @@
+import { Writable } from "node:stream";
+export declare class Collector extends Writable {
+    readonly bufferedBytes: Buffer[];
+    _write(chunk: Buffer, encoding: string, callback: (err?: Error) => void): void;
+}

node_modules/@smithy/node-http-handler/dist-types/stream-collector/index.d.ts

@@ -0,0 +1,7 @@
+import type { StreamCollector } from "@smithy/types";
+/**
+ * Converts a stream to a byte array.
+ *
+ * @internal
+ */
+export declare const streamCollector: StreamCollector;

node_modules/@smithy/node-http-handler/dist-types/timing.d.ts

@@ -0,0 +1,9 @@
+/**
+ * For test spies.
+ *
+ * @internal
+ */
+export declare const timing: {
+    setTimeout: (cb: (...ignored: any[]) => void | unknown, ms?: number) => number;
+    clearTimeout: (timeoutId: string | number | undefined | unknown) => void;
+};

node_modules/@smithy/node-http-handler/dist-types/write-request-body.d.ts

@@ -0,0 +1,12 @@
+import type { ClientHttp2Stream } from "node:http2";
+import type { ClientRequest } from "node:http";
+import type { HttpRequest } from "@smithy/types";
+/**
+ * This resolves when writeBody has been called.
+ *
+ * @param httpRequest - opened Node.js request.
+ * @param request - container with the request body.
+ * @param maxContinueTimeoutMs - time to wait for the continue event.
+ * @param externalAgent - whether agent is owned by caller code.
+ */
+export declare function writeRequestBody(httpRequest: ClientRequest | ClientHttp2Stream, request: HttpRequest, maxContinueTimeoutMs?: number, externalAgent?: boolean): Promise<void>;

node_modules/@smithy/node-http-handler/package.json

@@ -0,0 +1,66 @@
+{
+  "name": "@smithy/node-http-handler",
+  "version": "4.7.7",
+  "description": "Provides a way to make requests",
+  "scripts": {
+    "build": "concurrently 'yarn:build:types' 'yarn:build:es:cjs'",
+    "build:es:cjs": "yarn g:tsc -p tsconfig.es.json && node ../../scripts/inline node-http-handler",
+    "build:types": "yarn g:tsc -p tsconfig.types.json",
+    "build:types:downlevel": "premove dist-types/ts3.4 && downlevel-dts dist-types dist-types/ts3.4",
+    "clean": "premove dist-cjs dist-es dist-types tsconfig.cjs.tsbuildinfo tsconfig.es.tsbuildinfo tsconfig.types.tsbuildinfo",
+    "extract:docs": "api-extractor run --local",
+    "format": "prettier --config ../../prettier.config.js --ignore-path ../../.prettierignore --write \"**/*.{ts,md,json}\"",
+    "lint": "eslint -c ../../.eslintrc.js \"src/**/*.ts\"",
+    "stage-release": "premove .release && yarn pack && mkdir ./.release && tar zxvf ./package.tgz --directory ./.release && rm ./package.tgz",
+    "test": "yarn g:vitest run",
+    "test:watch": "yarn g:vitest watch"
+  },
+  "author": {
+    "name": "AWS SDK for JavaScript Team",
+    "email": "",
+    "url": "https://aws.amazon.com/javascript/"
+  },
+  "license": "Apache-2.0",
+  "sideEffects": false,
+  "main": "./dist-cjs/index.js",
+  "module": "./dist-es/index.js",
+  "types": "./dist-types/index.d.ts",
+  "dependencies": {
+    "@smithy/core": "^3.24.6",
+    "@smithy/types": "^4.14.3",
+    "tslib": "^2.6.2"
+  },
+  "devDependencies": {
+    "@smithy/abort-controller": "^4.2.16",
+    "@types/node": "^18.11.9",
+    "concurrently": "7.0.0",
+    "downlevel-dts": "0.10.1",
+    "premove": "4.0.0",
+    "typedoc": "0.23.23"
+  },
+  "engines": {
+    "node": ">=18.0.0"
+  },
+  "typesVersions": {
+    "<4.5": {
+      "dist-types/*": [
+        "dist-types/ts3.4/*"
+      ]
+    }
+  },
+  "files": [
+    "dist-*/**"
+  ],
+  "homepage": "https://github.com/smithy-lang/smithy-typescript/tree/main/packages/node-http-handler",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/smithy-lang/smithy-typescript.git",
+    "directory": "packages/node-http-handler"
+  },
+  "typedoc": {
+    "entryPoint": "src/index.ts"
+  },
+  "publishConfig": {
+    "directory": ".release/package"
+  }
+}