repo_description: Promise based HTTP client for the browser and node.js
repo_topics: hacktoberfest http-client javascript nodejs promise
code: import utils from '../utils.js';
  import settle from '../core/settle.js';
  import buildFullPath from '../core/buildFullPath.js';
  import buildURL from '../helpers/buildURL.js';
  import { getProxyForUrl } from 'proxy-from-env';
  import http from 'http';
  import https from 'https';
  import http2 from 'http2';
  import util from 'util';
  import { resolve as resolvePath } from 'path';
  import followRedirects from 'follow-redirects';
  import zlib from 'zlib';
  import { VERSION } from '../env/data.js';
  import transitionalDefaults from '../defaults/transitional.js';
  import AxiosError from '../core/AxiosError.js';
  import CanceledError from '../cancel/CanceledError.js';
  import platform from '../platform/index.js';
  import fromDataURI from '../helpers/fromDataURI.js';
  import stream from 'stream';
  import AxiosHeaders from '../core/AxiosHeaders.js';
  import AxiosTransformStream from '../helpers/AxiosTransformStream.js';
  import { EventEmitter } from 'events';
  import formDataToStream from '../helpers/formDataToStream.js';
  import readBlob from '../helpers/readBlob.js';
  import ZlibHeaderTransformStream from '../helpers/ZlibHeaderTransformStream.js';
  import callbackify from '../helpers/callbackify.js';
  import shouldBypassProxy from '../helpers/shouldBypassProxy.js';
  import {
    progressEventReducer,
    progressEventDecorator,
    asyncDecorator,
  } from '../helpers/progressEventReducer.js';
  import estimateDataURLDecodedBytes from '../helpers/estimateDataURLDecodedBytes.js';
  
  const zlibOptions = {
    flush: zlib.constants.Z_SYNC_FLUSH,
    finishFlush: zlib.constants.Z_SYNC_FLUSH,
  };
  
  const brotliOptions = {
    flush: zlib.constants.BROTLI_OPERATION_FLUSH,
    finishFlush: zlib.constants.BROTLI_OPERATION_FLUSH,
  };
  
  const isBrotliSupported = utils.isFunction(zlib.createBrotliDecompress);
  
  const { http: httpFollow, https: httpsFollow } = followRedirects;
  
  const isHttps = /https:?/;
  
  // Symbols used to bind a single 'error' listener to a pooled socket and track
  // the request currently owning that socket across keep-alive reuse (issue #10780).
  const kAxiosSocketListener = Symbol('axios.http.socketListener');
  const kAxiosCurrentReq = Symbol('axios.http.currentReq');
  
  const supportedProtocols = platform.protocols.map((protocol) => {
    return protocol + ':';
  });
  
  const flushOnFinish = (stream, [throttled, flush]) => {
    stream.on('end', flush).on('error', flush);
  
    return throttled;
  };
  
  class Http2Sessions {
    constructor() {
      this.sessions = Object.create(null);
    }
  
    getSession(authority, options) {
      options = Object.assign(
        {
          sessionTimeout: 1000,
        },
        options
      );
  
      let authoritySessions = this.sessions[authority];
  
      if (authoritySessions) {
        let len = authoritySessions.length;
  
        for (let i = 0; i < len; i++) {
          const [sessionHandle, sessionOptions] = authoritySessions[i];
          if (
            !sessionHandle.destroyed &&
            !sessionHandle.closed &&
            util.isDeepStrictEqual(sessionOptions, options)
          ) {
            return sessionHandle;
          }
        }
      }
  
      const session = http2.connect(authority, options);
  
      let removed;
  
      const removeSession = () => {
        if (removed) {
          return;
        }
  
        removed = true;
  
        let entries = authoritySessions,
          len = entries.length,
          i = len;
  
        while (i--) {
          if (entries[i][0] === session) {
            if (len === 1) {
              delete this.sessions[authority];
            } else {
              entries.splice(i, 1);
            }
            if (!session.closed) {
              session.close();
            }
            return;
          }
        }
      };
  
      const originalRequestFn = session.request;
  
      const { sessionTimeout } = options;
  
      if (sessionTimeout != null) {
        let timer;
        let streamsCount = 0;
  
        session.request = function () {
          const stream = originalRequestFn.apply(this, arguments);
  
          streamsCount++;
  
          if (timer) {
            clearTimeout(timer);
            timer = null;
          }
  
          stream.once('close', () => {
            if (!--streamsCount) {
              timer = setTimeout(() => {
                timer = null;
                removeSession();
              }, sessionTimeout);
            }
          });
  
          return stream;
        };
      }
  
      session.once('close', removeSession);
  
      let entry = [session, options];
  
      authoritySessions
        ? authoritySessions.push(entry)
        : (authoritySessions = this.sessions[authority] = [entry]);
  
      return session;
    }
  }
  
  const http2Sessions = new Http2Sessions();
  
  /**
   * If the proxy or config beforeRedirects functions are defined, call them with the options
   * object.
   *
   * @param {Object<string, any>} options - The options object that was passed to the request.
   *
   * @returns {Object<string, any>}
   */
  function dispatchBeforeRedirect(options, responseDetails) {
    if (options.beforeRedirects.proxy) {
      options.beforeRedirects.proxy(options);
    }
    if (options.beforeRedirects.config) {
      options.beforeRedirects.config(options, responseDetails);
    }
  }
  
  /**
   * If the proxy or config afterRedirects functions are defined, call them with the options
   *
   * @param {http.ClientRequestArgs} options
   * @param {AxiosProxyConfig} configProxy configuration from Axios options object
   * @param {string} location
   *
   * @returns {http.ClientRequestArgs}
   */
  function setProxy(options, configProxy, location, isRedirect) {
    let proxy = configProxy;
    if (!proxy && proxy !== false) {
      const proxyUrl = getProxyForUrl(location);
      if (proxyUrl) {
        if (!shouldBypassProxy(location)) {
          proxy = new URL(proxyUrl);
        }
      }
    }
    // On redirect re-invocation, strip any stale Proxy-Authorization header carried
    // over from the prior request (e.g. new target no longer uses a proxy, or uses
    // a different proxy). Skip on the initial request so user-supplied headers are
    // preserved. Header names are case-insensitive, so remove every case variant.
    if (isRedirect && options.headers) {
      for (const name of Object.keys(options.headers)) {
        if (name.toLowerCase() === 'proxy-authorization') {
          delete options.headers[name];
        }
      }
    }
    if (proxy) {
      // Basic proxy authorization
      if (proxy.username) {
        proxy.auth = (proxy.username || '') + ':' + (proxy.password || '');
      }
  
      if (proxy.auth) {
        // Support proxy auth object form
        const validProxyAuth = Boolean(proxy.auth.username || proxy.auth.password);
  
        if (validProxyAuth) {
          proxy.auth = (proxy.auth.username || '') + ':' + (proxy.auth.password || '');
        } else if (typeof proxy.auth === 'object') {
          throw new AxiosError('Invalid proxy authorization', AxiosError.ERR_BAD_OPTION, { proxy });
        }
  
        const base64 = Buffer.from(proxy.auth, 'utf8').toString('base64');
  
        options.headers['Proxy-Authorization'] = 'Basic ' + base64;
      }
  
      options.headers.host = options.hostname + (options.port ? ':' + options.port : '');
      const proxyHost = proxy.hostname || proxy.host;
      options.hostname = proxyHost;
      // Replace 'host' since options is not a URL object
      options.host = proxyHost;
      options.port = proxy.port;
      options.path = location;
      if (proxy.protocol) {
        options.protocol = proxy.protocol.includes(':') ? proxy.protocol : `${proxy.protocol}:`;
      }
    }
  
    options.beforeRedirects.proxy = function beforeRedirect(redirectOptions) {
      // Configure proxy for redirected request, passing the original config proxy to apply
      // the exact same logic as if the redirected request was performed by axios directly.
      setProxy(redirectOptions, configProxy, redirectOptions.href, true);
    };
  }
  
  const isHttpAdapterSupported =
    typeof process !== 'undefined' && utils.kindOf(process) === 'process';
  
  // temporary hotfix
  
  const wrapAsync = (asyncExecutor) => {
    return new Promise((resolve, reject) => {
      let onDone;
      let isDone;
  
      const done = (value, isRejected) => {
        if (isDone) return;
        isDone = true;
        onDone && onDone(value, isRejected);
      };
  
      const _resolve = (value) => {
        done(value);
        resolve(value);
      };
  
      const _reject = (reason) => {
        done(reason, true);
        reject(reason);
      };
  
      asyncExecutor(_resolve, _reject, (onDoneHandler) => (onDone = onDoneHandler)).catch(_reject);
    });
  };
  
  const resolveFamily = ({ address, family }) => {
    if (!utils.isString(address)) {
      throw TypeError('address must be a string');
    }
    return {
      address,
      family: family || (address.indexOf('.') < 0 ? 6 : 4),
    };
  };
  
  const buildAddressEntry = (address, family) =>
    resolveFamily(utils.isObject(address) ? address : { address, family });
  
  const http2Transport = {
    request(options, cb) {
      const authority =
        options.protocol +
        '//' +
        options.hostname +
        ':' +
        (options.port || (options.protocol === 'https:' ? 443 : 80));
  
      const { http2Options, headers } = options;
  
      const session = http2Sessions.getSession(authority, http2Options);
  
      const { HTTP2_HEADER_SCHEME, HTTP2_HEADER_METHOD, HTTP2_HEADER_PATH, HTTP2_HEADER_STATUS } =
        http2.constants;
  
      const http2Headers = {
        [HTTP2_HEADER_SCHEME]: options.protocol.replace(':', ''),
        [HTTP2_HEADER_METHOD]: options.method,
        [HTTP2_HEADER_PATH]: options.path,
      };
  
      utils.forEach(headers, (header, name) => {
        name.charAt(0) !== ':' && (http2Headers[name] = header);
      });
  
      const req = session.request(http2Headers);
  
      req.once('response', (responseHeaders) => {
        const response = req; //duplex
  
        responseHeaders = Object.assign({}, responseHeaders);
  
        const status = responseHeaders[HTTP2_HEADER_STATUS];
  
        delete responseHeaders[HTTP2_HEADER_STATUS];
  
        response.headers = responseHeaders;
  
        response.statusCode = +status;
  
        cb(response);
      });
  
      return req;
    },
  };
  
  /*eslint consistent-return:0*/
  export default isHttpAdapterSupported &&
    function httpAdapter(config) {
      return wrapAsync(async function dispatchHttpRequest(resolve, reject, onDone) {
        const own = (key) => (utils.hasOwnProp(config, key) ? config[key] : undefined);
        let data = own('data');
        let lookup = own('lookup');
        let family = own('family');
        let httpVersion = own('httpVersion');
        if (httpVersion === undefined) httpVersion = 1;
        let http2Options = own('http2Options');
        const responseType = own('responseType');
        const responseEncoding = own('responseEncoding');
        const method = config.method.toUpperCase();
        let isDone;
        let rejected = false;
        let req;
  
        httpVersion = +httpVersion;
  
        if (Number.isNaN(httpVersion)) {
          throw TypeError(`Invalid protocol version: '${config.httpVersion}' is not a number`);
        }
  
        if (httpVersion !== 1 && httpVersion !== 2) {
          throw TypeError(`Unsupported protocol version '${httpVersion}'`);
        }
  
        const isHttp2 = httpVersion === 2;
  
        if (lookup) {
          const _lookup = callbackify(lookup, (value) => (utils.isArray(value) ? value : [value]));
          // hotfix to support opt.all option which is required for node 20.x
          lookup = (hostname, opt, cb) => {
            _lookup(hostname, opt, (err, arg0, arg1) => {
              if (err) {
                return cb(err);
              }
  
              const addresses = utils.isArray(arg0)
                ? arg0.map((addr) => buildAddressEntry(addr))
                : [buildAddressEntry(arg0, arg1)];
  
              opt.all ? cb(err, addresses) : cb(err, addresses[0].address, addresses[0].family);
            });
          };
        }
  
        const abortEmitter = new EventEmitter();
  
        function abort(reason) {
          try {
            abortEmitter.emit(
              'abort',
              !reason || reason.type ? new CanceledError(null, config, req) : reason
            );
          } catch (err) {
            console.warn('emit error', err);
          }
        }
  
        abortEmitter.once('abort', reject);
  
        const onFinished = () => {
          if (config.cancelToken) {
            config.cancelToken.unsubscribe(abort);
          }
  
          if (config.signal) {
            config.signal.removeEventListener('abort', abort);
          }
  
          abortEmitter.removeAllListeners();
        };
  
        if (config.cancelToken || config.signal) {
          config.cancelToken && config.cancelToken.subscribe(abort);
          if (config.signal) {
            config.signal.aborted ? abort() : config.signal.addEventListener('abort', abort);
          }
        }
  
        onDone((response, isRejected) => {
          isDone = true;
  
          if (isRejected) {
            rejected = true;
            onFinished();
            return;
          }
  
          const { data } = response;
  
          if (data instanceof stream.Readable || data instanceof stream.Duplex) {
            const offListeners = stream.finished(data, () => {
              offListeners();
              onFinished();
            });
          } else {
            onFinished();
          }
        });
  
        // Parse url
        const fullPath = buildFullPath(config.baseURL, config.url, config.allowAbsoluteUrls);
        const parsed = new URL(fullPath, platform.hasBrowserEnv ? platform.origin : undefined);
        const protocol = parsed.protocol || supportedProtocols[0];
  
        if (protocol === 'data:') {
          // Apply the same semantics as HTTP: only enforce if a finite, non-negative cap is set.
          if (config.maxContentLength > -1) {
            // Use the exact string passed to fromDataURI (config.url); fall back to fullPath if needed.
            const dataUrl = String(config.url || fullPath || '');
            const estimated = estimateDataURLDecodedBytes(dataUrl);
  
            if (estimated > config.maxContentLength) {
              return reject(
                new AxiosError(
                  'maxContentLength size of ' + config.maxContentLength + ' exceeded',
                  AxiosError.ERR_BAD_RESPONSE,
                  config
                )
              );
            }
          }
  
          let convertedData;
  
          if (method !== 'GET') {
            return settle(resolve, reject, {
              status: 405,
              statusText: 'method not allowed',
              headers: {},
              config,
            });
          }
  
          try {
            convertedData = fromDataURI(config.url, responseType === 'blob', {
              Blob: config.env && config.env.Blob,
            });
          } catch (err) {
            throw AxiosError.from(err, AxiosError.ERR_BAD_REQUEST, config);
          }
  
          if (responseType === 'text') {
            convertedData = convertedData.toString(responseEncoding);
  
            if (!responseEncoding || responseEncoding === 'utf8') {
              convertedData = utils.stripBOM(convertedData);
            }
          } else if (responseType === 'stream') {
            convertedData = stream.Readable.from(convertedData);
          }
  
          return settle(resolve, reject, {
            data: convertedData,
            status: 200,
            statusText: 'OK',
            headers: new AxiosHeaders(),
            config,
          });
        }
  
        if (supportedProtocols.indexOf(protocol) === -1) {
          return reject(
            new AxiosError('Unsupported protocol ' + protocol, AxiosError.ERR_BAD_REQUEST, config)
          );
        }
  
        const headers = AxiosHeaders.from(config.headers).normalize();
  
        // Set User-Agent (required by some servers)
        // See https://github.com/axios/axios/issues/69
        // User-Agent is specified; handle case where no UA header is desired
        // Only set header if it hasn't been set in config
        headers.set('User-Agent', 'axios/' + VERSION, false);
  
        const { onUploadProgress, onDownloadProgress } = config;
        const maxRate = config.maxRate;
        let maxUploadRate = undefined;
        let maxDownloadRate = undefined;
  
        // support for spec compliant FormData objects
        if (utils.isSpecCompliantForm(data)) {
          const userBoundary = headers.getContentType(/boundary=([-_\w\d]{10,70})/i);
  
          data = formDataToStream(
            data,
            (formHeaders) => {
              headers.set(formHeaders);
            },
            {
              tag: `axios-${VERSION}-boundary`,
              boundary: (userBoundary && userBoundary[1]) || undefined,
            }
          );
          // support for https://www.npmjs.com/package/form-data api
        } else if (utils.isFormData(data) && utils.isFunction(data.getHeaders) &&
                   data.getHeaders !== Object.prototype.getHeaders) {
          headers.set(data.getHeaders());
  
          if (!headers.hasContentLength()) {
            try {
              const knownLength = await util.promisify(data.getLength).call(data);
              Number.isFinite(knownLength) &&
                knownLength >= 0 &&
                headers.setContentLength(knownLength);
              /*eslint no-empty:0*/
            } catch (e) {}
          }
        } else if (utils.isBlob(data) || utils.isFile(data)) {
          data.size && headers.setContentType(data.type || 'application/octet-stream');
          headers.setContentLength(data.size || 0);
          data = stream.Readable.from(readBlob(data));
        } else if (data && !utils.isStream(data)) {
          if (Buffer.isBuffer(data)) {
            // Nothing to do...
          } else if (utils.isArrayBuffer(data)) {
            data = Buffer.from(new Uint8Array(data));
          } else if (utils.isString(data)) {
            data = Buffer.from(data, 'utf-8');
          } else {
            return reject(
              new AxiosError(
                'Data after transformation must be a string, an ArrayBuffer, a Buffer, or a Stream',
                AxiosError.ERR_BAD_REQUEST,
                config
              )
            );
          }
  
          // Add Content-Length header if data exists
          headers.setContentLength(data.length, false);
  
          if (config.maxBodyLength > -1 && data.length > config.maxBodyLength) {
            return reject(
              new AxiosError(
                'Request body larger than maxBodyLength limit',
                AxiosError.ERR_BAD_REQUEST,
                config
              )
            );
          }
        }
  
        const contentLength = utils.toFiniteNumber(headers.getContentLength());
  
        if (utils.isArray(maxRate)) {
          maxUploadRate = maxRate[0];
          maxDownloadRate = maxRate[1];
        } else {
          maxUploadRate = maxDownloadRate = maxRate;
        }
  
        if (data && (onUploadProgress || maxUploadRate)) {
          if (!utils.isStream(data)) {
            data = stream.Readable.from(data, { objectMode: false });
          }
  
          data = stream.pipeline(
            [
              data,
              new AxiosTransformStream({
                maxRate: utils.toFiniteNumber(maxUploadRate),
              }),
            ],
            utils.noop
          );
  
          onUploadProgress &&
            data.on(
              'progress',
              flushOnFinish(
                data,
                progressEventDecorator(
                  contentLength,
                  progressEventReducer(asyncDecorator(onUploadProgress), false, 3)
                )
              )
            );
        }
  
        // HTTP basic authentication
        let auth = undefined;
        const configAuth = own('auth');
        if (configAuth) {
          const username = configAuth.username || '';
          const password = configAuth.password || '';
          auth = username + ':' + password;
        }
  
        if (!auth && parsed.username) {
          const urlUsername = parsed.username;
          const urlPassword = parsed.password;
          auth = urlUsername + ':' + urlPassword;
        }
  
        auth && headers.delete('authorization');
  
        let path;
  
        try {
          path = buildURL(
            parsed.pathname + parsed.search,
            config.params,
            config.paramsSerializer
          ).replace(/^\?/, '');
        } catch (err) {
          const customErr = new Error(err.message);
          customErr.config = config;
          customErr.url = config.url;
          customErr.exists = true;
          return reject(customErr);
        }
  
        headers.set(
          'Accept-Encoding',
          'gzip, compress, deflate' + (isBrotliSupported ? ', br' : ''),
          false
        );
  
        // Null-prototype to block prototype pollution gadgets on properties read
        // directly by Node's http.request (e.g. insecureHTTPParser, lookup).
        // See GHSA-q8qp-cvcw-x6jj.
        const options = Object.assign(Object.create(null), {
          path,
          method: method,
          headers: headers.toJSON(),
          agents: { http: config.httpAgent, https: config.httpsAgent },
          auth,
          protocol,
          family,
          beforeRedirect: dispatchBeforeRedirect,
          beforeRedirects: Object.create(null),
          http2Options,
        });
  
        // cacheable-lookup integration hotfix
        !utils.isUndefined(lookup) && (options.lookup = lookup);
  
        if (config.socketPath) {
          if (typeof config.socketPath !== 'string') {
            return reject(new AxiosError(
              'socketPath must be a string',
              AxiosError.ERR_BAD_OPTION_VALUE,
              config
            ));
          }
  
          if (config.allowedSocketPaths != null) {
            const allowed = Array.isArray(config.allowedSocketPaths)
              ? config.allowedSocketPaths
              : [config.allowedSocketPaths];
  
            const resolvedSocket = resolvePath(config.socketPath);
            const isAllowed = allowed.some(
              (entry) => typeof entry === 'string' && resolvePath(entry) === resolvedSocket
            );
  
            if (!isAllowed) {
              return reject(new AxiosError(
                `socketPath "${config.socketPath}" is not permitted by allowedSocketPaths`,
                AxiosError.ERR_BAD_OPTION_VALUE,
                config
              ));
            }
          }
  
          options.socketPath = config.socketPath;
        } else {
          options.hostname = parsed.hostname.startsWith('[')
            ? parsed.hostname.slice(1, -1)
            : parsed.hostname;
          options.port = parsed.port;
          setProxy(
            options,
            config.proxy,
            protocol + '//' + parsed.hostname + (parsed.port ? ':' + parsed.port : '') + options.path
          );
        }
        let transport;
        const isHttpsRequest = isHttps.test(options.protocol);
        options.agent = isHttpsRequest ? config.httpsAgent : config.httpAgent;
  
        if (isHttp2) {
          transport = http2Transport;
        } else {
          const configTransport = own('transport');
          if (configTransport) {
            transport = configTransport;
          } else if (config.maxRedirects === 0) {
            transport = isHttpsRequest ? https : http;
          } else {
            if (config.maxRedirects) {
              options.maxRedirects = config.maxRedirects;
            }
            const configBeforeRedirect = own('beforeRedirect');
            if (configBeforeRedirect) {
              options.beforeRedirects.config = configBeforeRedirect;
            }
            transport = isHttpsRequest ? httpsFollow : httpFollow;
          }
        }
  
        if (config.maxBodyLength > -1) {
          options.maxBodyLength = config.maxBodyLength;
        } else {
          // follow-redirects does not skip comparison, so it should always succeed for axios -1 unlimited
          options.maxBodyLength = Infinity;
        }
  
        // Always set an explicit own value so a polluted
        // Object.prototype.insecureHTTPParser cannot enable the lenient parser
        // through Node's internal options copy (GHSA-q8qp-cvcw-x6jj).
        options.insecureHTTPParser = Boolean(own('insecureHTTPParser'));
  
        // Create the request
        req = transport.request(options, function handleResponse(res) {
          if (req.destroyed) return;
  
          const streams = [res];
  
          const responseLength = utils.toFiniteNumber(res.headers['content-length']);
  
          if (onDownloadProgress || maxDownloadRate) {
            const transformStream = new AxiosTransformStream({
              maxRate: utils.toFiniteNumber(maxDownloadRate),
            });
  
            onDownloadProgress &&
              transformStream.on(
                'progress',
                flushOnFinish(
                  transformStream,
                  progressEventDecorator(
                    responseLength,
                    progressEventReducer(asyncDecorator(onDownloadProgress), true, 3)
                  )
                )
              );
  
            streams.push(transformStream);
          }
  
          // decompress the response body transparently if required
          let responseStream = res;
  
          // return the last request in case of redirects
          const lastRequest = res.req || req;
  
          // if decompress disabled we should not decompress
          if (config.decompress !== false && res.headers['content-encoding']) {
            // if no content, but headers still say that it is encoded,
            // remove the header not confuse downstream operations
            if (method === 'HEAD' || res.statusCode === 204) {
              delete res.headers['content-encoding'];
            }
  
            switch ((res.headers['content-encoding'] || '').toLowerCase()) {
              /*eslint default-case:0*/
              case 'gzip':
              case 'x-gzip':
              case 'compress':
              case 'x-compress':
                // add the unzipper to the body stream processing pipeline
                streams.push(zlib.createUnzip(zlibOptions));
  
                // remove the content-encoding in order to not confuse downstream operations
                delete res.headers['content-encoding'];
                break;
              case 'deflate':
                streams.push(new ZlibHeaderTransformStream());
  
                // add the unzipper to the body stream processing pipeline
                streams.push(zlib.createUnzip(zlibOptions));
  
                // remove the content-encoding in order to not confuse downstream operations
                delete res.headers['content-encoding'];
                break;
              case 'br':
                if (isBrotliSupported) {
                  streams.push(zlib.createBrotliDecompress(brotliOptions));
                  delete res.headers['content-encoding'];
                }
            }
          }
  
          responseStream = streams.length > 1 ? stream.pipeline(streams, utils.noop) : streams[0];
  
          const response = {
            status: res.statusCode,
            statusText: res.statusMessage,
            headers: new AxiosHeaders(res.headers),
            config,
            request: lastRequest,
          };
  
          if (responseType === 'stream') {
            // Enforce maxContentLength on streamed responses; previously this
            // was applied only to buffered responses. See GHSA-vf2m-468p-8v99.
            if (config.maxContentLength > -1) {
              const limit = config.maxContentLength;
              const source = responseStream;
              async function* enforceMaxContentLength() {
                let totalResponseBytes = 0;
                for await (const chunk of source) {
                  totalResponseBytes += chunk.length;
                  if (totalResponseBytes > limit) {
                    throw new AxiosError(
                      'maxContentLength size of ' + limit + ' exceeded',
                      AxiosError.ERR_BAD_RESPONSE,
                      config,
                      lastRequest
                    );
                  }
                  yield chunk;
                }
              }
              responseStream = stream.Readable.from(enforceMaxContentLength(), {
                objectMode: false,
              });
            }
            response.data = responseStream;
            settle(resolve, reject, response);
          } else {
            const responseBuffer = [];
            let totalResponseBytes = 0;
  
            responseStream.on('data', function handleStreamData(chunk) {
              responseBuffer.push(chunk);
              totalResponseBytes += chunk.length;
  
              // make sure the content length is not over the maxContentLength if specified
              if (config.maxContentLength > -1 && totalResponseBytes > config.maxContentLength) {
                // stream.destroy() emit aborted event before calling reject() on Node.js v16
                rejected = true;
                responseStream.destroy();
                abort(
                  new AxiosError(
                    'maxContentLength size of ' + config.maxContentLength + ' exceeded',
                    AxiosError.ERR_BAD_RESPONSE,
                    config,
                    lastRequest
                  )
                );
              }
            });
  
            responseStream.on('aborted', function handlerStreamAborted() {
              if (rejected) {
                return;
              }
  
              const err = new AxiosError(
                'stream has been aborted',
                AxiosError.ERR_BAD_RESPONSE,
                config,
                lastRequest
              );
              responseStream.destroy(err);
              reject(err);
            });
  
            responseStream.on('error', function handleStreamError(err) {
              if (req.destroyed) return;
              reject(AxiosError.from(err, null, config, lastRequest));
            });
  
            responseStream.on('end', function handleStreamEnd() {
              try {
                let responseData =
                  responseBuffer.length === 1 ? responseBuffer[0] : Buffer.concat(responseBuffer);
                if (responseType !== 'arraybuffer') {
                  responseData = responseData.toString(responseEncoding);
                  if (!responseEncoding || responseEncoding === 'utf8') {
                    responseData = utils.stripBOM(responseData);
                  }
                }
                response.data = responseData;
              } catch (err) {
                return reject(AxiosError.from(err, null, config, response.request, response));
              }
              settle(resolve, reject, response);
            });
          }
  
          abortEmitter.once('abort', (err) => {
            if (!responseStream.destroyed) {
              responseStream.emit('error', err);
              responseStream.destroy();
            }
          });
        });
  
        abortEmitter.once('abort', (err) => {
          if (req.close) {
            req.close();
          } else {
            req.destroy(err);
          }
        });
  
        // Handle errors
        req.on('error', function handleRequestError(err) {
          reject(AxiosError.from(err, null, config, req));
        });
  
        // set tcp keep alive to prevent drop connection by peer
        req.on('socket', function handleRequestSocket(socket) {
          // default interval of sending ack packet is 1 minute
          socket.setKeepAlive(true, 1000 * 60);
  
          // Install a single 'error' listener per socket (not per request) to avoid
          // accumulating listeners on pooled keep-alive sockets that get reassigned
          // to new requests before the previous request's 'close' fires (issue #10780).
          // The listener is bound to the socket's currently-active request via a
          // symbol, which is swapped as the socket is reassigned.
          if (!socket[kAxiosSocketListener]) {
            socket.on('error', function handleSocketError(err) {
              const current = socket[kAxiosCurrentReq];
              if (current && !current.destroyed) {
                current.destroy(err);
              }
            });
            socket[kAxiosSocketListener] = true;
          }
  
          socket[kAxiosCurrentReq] = req;
  
          req.once('close', function clearCurrentReq() {
            if (socket[kAxiosCurrentReq] === req) {
              socket[kAxiosCurrentReq] = null;
            }
          });
        });
  
        // Handle request timeout
        if (config.timeout) {
          // This is forcing a int timeout to avoid problems if the `req` interface doesn't handle other types.
          const timeout = parseInt(config.timeout, 10);
  
          if (Number.isNaN(timeout)) {
            abort(
              new AxiosError(
                'error trying to parse `config.timeout` to int',
                AxiosError.ERR_BAD_OPTION_VALUE,
                config,
                req
              )
            );
  
            return;
          }
  
          // Sometime, the response will be very slow, and does not respond, the connect event will be block by event loop system.
          // And timer callback will be fired, and abort() will be invoked before connection, then get "socket hang up" and code ECONNRESET.
          // At this time, if we have a large number of request, nodejs will hang up some socket on background. and the number will up and up.
          // And then these socket which be hang up will devouring CPU little by little.
          // ClientRequest.setTimeout will be fired on the specify milliseconds, and can make sure that abort() will be fired after connect.
          req.setTimeout(timeout, function handleRequestTimeout() {
            if (isDone) return;
            let timeoutErrorMessage = config.timeout
              ? 'timeout of ' + config.timeout + 'ms exceeded'
              : 'timeout exceeded';
            const transitional = config.transitional || transitionalDefaults;
            if (config.timeoutErrorMessage) {
              timeoutErrorMessage = config.timeoutErrorMessage;
            }
            abort(
              new AxiosError(
                timeoutErrorMessage,
                transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED,
                config,
                req
              )
            );
          });
        } else {
          // explicitly reset the socket timeout value for a possible `keep-alive` request
          req.setTimeout(0);
        }
  
        // Send the request
        if (utils.isStream(data)) {
          let ended = false;
          let errored = false;
  
          data.on('end', () => {
            ended = true;
          });
  
          data.once('error', (err) => {
            errored = true;
            req.destroy(err);
          });
  
          data.on('close', () => {
            if (!ended && !errored) {
              abort(new CanceledError('Request stream has been aborted', config, req));
            }
          });
  
          // Enforce maxBodyLength for streamed uploads on the native http/https
          // transport (maxRedirects === 0); follow-redirects enforces it on the
          // other path. See GHSA-5c9x-8gcm-mpgx.
          let uploadStream = data;
          if (config.maxBodyLength > -1 && config.maxRedirects === 0) {
            const limit = config.maxBodyLength;
            let bytesSent = 0;
            uploadStream = stream.pipeline(
              [
                data,
                new stream.Transform({
                  transform(chunk, _enc, cb) {
                    bytesSent += chunk.length;
                    if (bytesSent > limit) {
                      return cb(
                        new AxiosError(
                          'Request body larger than maxBodyLength limit',
                          AxiosError.ERR_BAD_REQUEST,
                          config,
                          req
                        )
                      );
                    }
                    cb(null, chunk);
                  },
                }),
              ],
              utils.noop
            );
            uploadStream.on('error', (err) => {
              if (!req.destroyed) req.destroy(err);
            });
          }
  
          uploadStream.pipe(req);
        } else {
          data && req.write(data);
          req.end();
        }
      });
    };
  
  export const __setProxy = setProxy;
  