GIF89a=( õ' 7IAXKgNgYvYx\%wh…hŽth%ˆs%—x¨}9®Œ©€&©‰%¶†(¹–.¹5·œD¹&Çš)ÇŸ5ǘ;Í£*È¡&Õ²)ׯ7×µ<Ñ»4ï°3ø‘HÖ§KͯT÷¨Yÿšqÿ»qÿÔFØ !ù ' !ÿ NETSCAPE2.0 , =( þÀ“pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§gª«ªE¯°¨¬ª±²Œ¹º¹E¾­”´ÂB¶¯ §Åȸ»ÑD¾¿Á•ÄÅ®° ÝH¾ÒLÀÆDÙ«D¶BÝïðÀ¾DÑÑÔTÌÍíH òGö¨A RÎڐ |¥ ٭&ºìE8œ¹kGÔAÞpx­a¶­ã R2XB®åE8I€Õ6Xî:vT)äžþÀq¦è³¥ì仕F~%xñ  4#ZÔ‰O|-4Bs‘X:= QÉ œš lºÒyXJŠGȦ|s hÏíK–3l7·B|¥$'7Jީܪ‰‡àá”Dæn=Pƒ ¤Òëí‰`䌨ljóá¯Éüv>á–Á¼5 ½.69ûϸd«­ºÀûnlv©‹ªîf{¬ÜãPbŸ  l5‘Ž¯pß ´ ˜3aÅùäI«O’ý·‘áÞ‡˜¾Æ‚ÙÏiÇÿ‹Àƒ #öó)pâš Þ½ ‘Ý{ó)vmÞü%D~ 6f s}ŃƒDØW Eþ`‡þ À…L8xá†ç˜{)x`X/> Ì}mø‚–RØ‘*|`D=‚Ø_ ^ð5 !_…'aä“OÚ—7âcð`D”Cx`ÝÂ¥ä‹éY¹—F¼¤¥Š?¡Õ™ n@`} lď’ÄÉ@4>ñd œ à‘vÒxNÃ×™@žd=ˆgsžG±æ ´²æud &p8Qñ)ˆ«lXD©øÜéAžHìySun jª×k*D¤LH] †¦§C™Jä–´Xb~ʪwStŽ6K,°£qÁœ:9ت:¨þªl¨@¡`‚ûÚ ».Û¬¯t‹ÆSÉ[:°=Š‹„‘Nåû”Ìî{¿ÂA ‡Rà›ÀÙ6úë°Ÿð0Ä_ ½;ÃϱîÉì^ÇÛÇ#Ëë¼ôº!±Ä˜íUîÅÇ;0L1óÁµö«p% AÀºU̬ݵ¼á%霼€‡¯Á~`ÏG¯»À× ­²± =4ªnpð3¾¤³¯­ü¾¦îuÙuµÙ®|%2ÊIÿür¦#0·ÔJ``8È@S@5ê¢ ö×Þ^`8EÜ]ý.뜃Âç 7 ú ȉÞj œ½Dç zý¸iþœÑÙûÄë!ˆÞÀl§Ïw‹*DçI€nEX¯¬¼ &A¬Go¼QföõFç°¯;é¦÷îŽêJ°îúôF5¡ÌQ|îúöXªæ»TÁÏyñêï]ê² o óÎC=öõ›ÒÓPB@ D×½œä(>èCÂxŽ`±«Ÿ–JЀ»Û á¤±p+eE0`ëŽ`A Ú/NE€Ø†À9‚@¤à H½7”à‡%B‰`Àl*ƒó‘–‡8 2ñ%¸ —€:Ù1Á‰E¸àux%nP1ð!‘ðC)¾P81lÑɸF#ˆ€{´âé°ÈB„0>±û °b¡Š´±O‚3È–Ù()yRpbµ¨E.Z‘D8ÊH@% òŒx+%Ù˜Æcü »¸˜fõ¬b·d`Fê™8èXH"ÉÈ-±|1Ô6iI, 2““¬$+](A*jÐ QTÂo‰.ÛU슬Œã„Ž`¯SN¡–¶Äåyše¯ª’­¬‚´b¦Éož œ)åyâ@Ì®3 ÎtT̉°&Ø+žLÀf"Ø-|žçÔ>‡Ðv¦Ðžì\‚ Q1)Ž@Žh#aP72”ˆ™¨$‚ !ù " , =( …7IAXG]KgNgYvYxR"k\%w]'}hŽth%ˆg+ˆs%—r.—m3šx3˜x¨}9®€&©€+¨‡7§‰%¶†(¹–.¹œD¹&ǘ;Í•&ײ)×»4ïÌ6ò§KÍ þ@‘pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g «¬ E ±± ¨­¶°ººE Á´”·®C¬²§Ç¶Œ»ÓDÃÕƷ¯Ê±H½ºM×ÁGÚ¬D¶BËÁ½î½DÓôTÏÛßîG»ôõC×CÌ l&âž:'òtU³6ɹ#·Ø)€'Ü.6±&ëÍÈ» K(8p0N?!æ2"ÛˆNIJX>R¼ÐO‚M '¡¨2¸*Ÿþ>#n↠å@‚<[:¡Iïf’ ¤TÚ˘CdbÜÙ“[«ŽEú5MBo¤×@€`@„€Êt W-3 ¶Ÿ¡BíêäjIÝ…Eò9[T…$íêﯧ„…•s»Óȳ¹€ÅÚdc®UUρ#±Ùïldj?´í¼²`\ŽÁðÞu|3'ÖŒ]ë6 ¶S#²‡˜FKLÈ *N E´‘áäŠ$˜›eÄYD„ºq«.è촁ƒs \-ÔjA 9²õ÷å- üúM[Âx(ís÷ì®x€|í¡Ù’p¦‚ ŽkÛTÇDpE@WÜ ²Ç]kŠ1¨ þ€·Yb ÓÁ‰l°*n0 ç™—žzBdОu¾7ĉBl€â‰-ºx~|UåU‰  h*Hœ|e"#"?vpÄiŠe6^ˆ„+qâŠm8 #VÇá ‘å–ÄV„œ|Šè•m"сœn|@›U¶ÆΞ—Špb¥G¨ED”€±Úê2FÌIç? >Éxå Œ± ¡¤„%‘žjŸ‘ꄯ<Ìaà9ijÐ2˜D¦È&›†Z`‚å]wþ¼Â:ç6àB¤7eFJ|õÒ§Õ,¨äàFÇ®cS·Ê¶+B°,‘Þ˜ºNûãØ>PADÌHD¹æž«ÄÀnÌ¥}­#Ë’ë QÀÉSÌÂÇ2ÌXÀ{æk²lQÁ2«ÊðÀ¯w|2Í h‹ÄÂG€,m¾¶ë3ÐÙ6-´ÅE¬L°ÆIij*K½ÀÇqï`DwVÍQXœÚÔpeœ±¬Ñ q˜§Tœ½µƒ°Œìu Â<¶aØ*At¯lmEØ ü ôÛN[P1ÔÛ¦­±$ÜÆ@`ùåDpy¶yXvCAyåB`ŽD¶ 0QwG#¯ æš[^Äþ $ÀÓÝǦ{„L™[±úKÄgÌ;ï£S~¹ìGX.ôgoT.»åˆ°ùŸûù¡?1zö¦Ÿž:ÅgÁ|ìL¹ „®£œŠ‚à0œ]PÁ^p F<"•ç?!,ñ‡N4—…PÄ Á„ö¨Û:Tè@hÀ‹%táÿ:ø-žI<`þ‹p I….)^ 40D#p@ƒj4–؀:²‰1Øâr˜¼F2oW¼#Z†;$Q q” ‘ ÂK¦ñNl#29 !’F@¥Bh·ᏀL!—XFóLH‘Kh¤.«hE&JòG¨¥<™WN!€ÑÙÚˆY„@†>Œž19J" 2,/ &.GXB%ÌRÈ9B6¹W]’î×ÔW¥’IÎ$ ñ‹ÓŒE8YÆ ¼³™ñA5“à®Q.aŸB€&Ø©³ JÁ—! ¦t)K%tœ-¦JF bòNMxLôþ)ÐR¸Ð™‘ èÝ6‘O!THÌ„HÛ ‰ !ù ) , =( …AXKgNgYvYxR"k\%wh…hŽh%ˆg+ˆs%—r.—x3˜x¨}9®€&©€+¨Œ,©‡7§‰%¶†(¹–.¹5·&Çš)ǘ;Í•&×£*Ȳ)ׯ7×»4ï°3øÌ6ò‘HÖ§KÍ»Hó¯T÷¨Yÿ»qÿÇhÿ þÀ”pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g ª« E$±²¨ª­ · °²½$E$ÂÕ««D· Í ¿¦Ç¶¸ÌŒ¾³CÃÅÆ E ééH½MÛÂGâªD­ çBêêϾD²ÒaÀà€Š1r­ðÓ¤ ÔožzU!L˜C'¾yW½UGtäÇïÙllê0×àÂuGþ)AÀs[þ·xì ÁxO%ƒûX2ó—  P£n›R/¡ÑšHše+êDm?# —‘Ç£6¡8íJ¡ŸâDiäªM¥Ö„ôj“¬¹£5oQ7°- <‡ *´lãÓŒ2r/a!l)dÈ A™ÈE¢ôÔ͆…ð ;Ö˜c ¡%ß‚’Ùˆâ¸b½—pe~C"BíëÚHïeF2§æŠ8qb t_`urŠeü wÅu3êæPv§h•"ß`íÍxçLĹÜÖ3á  ~Öº“®›¸ÏMDfJÙ °„ÛµáWõ%§œ‚à©–‚X Ó؁)@®Ñ›Eþ´wëuÅSxb8y\mÖzœ¥§ZbºE—ÂLªÌw!y(>¡™wú=Ç|ÅÝs¢d €CÁW)HÜcC$€L Ä7„r.á\{)@ð` @ äXÈ$PD” `šaG:§æˆOˆ72EÐamn]ù"ŒcÊxÑŒ° &dR8`g«iÙŸLR!¦P …d’ä¡“¦ðÎTƒ¦ià|À _ ¥ Qi#¦Šg›Æ ›noMµ ›V ã£)p ç£ÎW…š=Âeªk§†j„ ´®1ß²sÉxéW«jšl|0¯B0Û, \jÛ´›6±¬¶C ÛíWþï|ëÙ‹¸ñzĸV {ì;Ýñn¼òVˆm³I¼³.Ðã¤PN¥ ²µ¼„µCã+¹ÍByî£Ñ¾HŸ›ëê 7ìYÆFTk¨SaoaY$Dµœìï¿Ã29RÈkt Çïfñ ÇÒ:ÀÐSp¹3ÇI¨â¥DZÄ ü9Ïýögñ½­uÔ*3)O‘˜Ö[_hv ,àî×Et Ÿé¶BH€ Õ[ü±64M@ÔSÌM7dÐl5-ÄÙU܍´©zߌ3Ô€3ž„ „ ¶ÛPô½5×g› êÚ˜kN„Ý…0Îj4€Ìë°“#{þÕ3S2çKÜ'ợlø¼Ú2K{° {Û¶?žm𸧠ËI¼nEò='êüóºè^üæÃ_Û=°óž‚ì#Oý¿Í'¡½áo..ÏYìnüñCœO±Áa¿¢Kô½o,üÄËbö²çºíï{ËC Ú— "”Ï{ËK ÍÒw„õ±Oz dÕ¨à:$ ƒô—«v»] A#ð «€¿šéz)Rx׿ˆ¥‚d``èw-îyÏf×K!ð€þ­Ð|ìPľ„=Ì`ý(f” 'Pa ¥ÐBJa%Ðâf§„%Š¡}FàáÝ×6>ÉäŠG"éŽè=ø!oŠ°^FP¼Ø©Q„ÀCÙÁ`(Ž\ÄÝ® ©Â$<n@dÄ E#ììUÒI! ‚#lù‹`k¦ÐÇ'Rró’ZýNBÈMF Í[¤+‹ðɈ-áwj¨¥þ8¾rá ,VÂh„"|½œ=×G_¦Ñ™EØ 0i*%̲˜Æda0mV‚k¾)›;„&6 p>ÓjK “¦Ç# âDÂ:ûc?:R Ó¬fÞéI-Ì“•Ã<ä=™Ï7˜3œ¨˜c2ŒW ,ˆ”8(T™P‰F¡Jhç"‚ ; 403WebShell
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Current File : /opt/alt/alt-nodejs16/root/lib/node_modules/npm/node_modules/agentkeepalive/lib/agent.js
'use strict';

const OriginalAgent = require('http').Agent;
const ms = require('humanize-ms');
const debug = require('debug')('agentkeepalive');
const deprecate = require('depd')('agentkeepalive');
const {
  INIT_SOCKET,
  CURRENT_ID,
  CREATE_ID,
  SOCKET_CREATED_TIME,
  SOCKET_NAME,
  SOCKET_REQUEST_COUNT,
  SOCKET_REQUEST_FINISHED_COUNT,
} = require('./constants');

// OriginalAgent come from
// - https://github.com/nodejs/node/blob/v8.12.0/lib/_http_agent.js
// - https://github.com/nodejs/node/blob/v10.12.0/lib/_http_agent.js

// node <= 10
let defaultTimeoutListenerCount = 1;
const majorVersion = parseInt(process.version.split('.', 1)[0].substring(1));
if (majorVersion >= 11 && majorVersion <= 12) {
  defaultTimeoutListenerCount = 2;
} else if (majorVersion >= 13) {
  defaultTimeoutListenerCount = 3;
}

class Agent extends OriginalAgent {
  constructor(options) {
    options = options || {};
    options.keepAlive = options.keepAlive !== false;
    // default is keep-alive and 4s free socket timeout
    // see https://medium.com/ssense-tech/reduce-networking-errors-in-nodejs-23b4eb9f2d83
    if (options.freeSocketTimeout === undefined) {
      options.freeSocketTimeout = 4000;
    }
    // Legacy API: keepAliveTimeout should be rename to `freeSocketTimeout`
    if (options.keepAliveTimeout) {
      deprecate('options.keepAliveTimeout is deprecated, please use options.freeSocketTimeout instead');
      options.freeSocketTimeout = options.keepAliveTimeout;
      delete options.keepAliveTimeout;
    }
    // Legacy API: freeSocketKeepAliveTimeout should be rename to `freeSocketTimeout`
    if (options.freeSocketKeepAliveTimeout) {
      deprecate('options.freeSocketKeepAliveTimeout is deprecated, please use options.freeSocketTimeout instead');
      options.freeSocketTimeout = options.freeSocketKeepAliveTimeout;
      delete options.freeSocketKeepAliveTimeout;
    }

    // Sets the socket to timeout after timeout milliseconds of inactivity on the socket.
    // By default is double free socket timeout.
    if (options.timeout === undefined) {
      // make sure socket default inactivity timeout >= 8s
      options.timeout = Math.max(options.freeSocketTimeout * 2, 8000);
    }

    // support humanize format
    options.timeout = ms(options.timeout);
    options.freeSocketTimeout = ms(options.freeSocketTimeout);
    options.socketActiveTTL = options.socketActiveTTL ? ms(options.socketActiveTTL) : 0;

    super(options);

    this[CURRENT_ID] = 0;

    // create socket success counter
    this.createSocketCount = 0;
    this.createSocketCountLastCheck = 0;

    this.createSocketErrorCount = 0;
    this.createSocketErrorCountLastCheck = 0;

    this.closeSocketCount = 0;
    this.closeSocketCountLastCheck = 0;

    // socket error event count
    this.errorSocketCount = 0;
    this.errorSocketCountLastCheck = 0;

    // request finished counter
    this.requestCount = 0;
    this.requestCountLastCheck = 0;

    // including free socket timeout counter
    this.timeoutSocketCount = 0;
    this.timeoutSocketCountLastCheck = 0;

    this.on('free', socket => {
      // https://github.com/nodejs/node/pull/32000
      // Node.js native agent will check socket timeout eqs agent.options.timeout.
      // Use the ttl or freeSocketTimeout to overwrite.
      const timeout = this.calcSocketTimeout(socket);
      if (timeout > 0 && socket.timeout !== timeout) {
        socket.setTimeout(timeout);
      }
    });
  }

  get freeSocketKeepAliveTimeout() {
    deprecate('agent.freeSocketKeepAliveTimeout is deprecated, please use agent.options.freeSocketTimeout instead');
    return this.options.freeSocketTimeout;
  }

  get timeout() {
    deprecate('agent.timeout is deprecated, please use agent.options.timeout instead');
    return this.options.timeout;
  }

  get socketActiveTTL() {
    deprecate('agent.socketActiveTTL is deprecated, please use agent.options.socketActiveTTL instead');
    return this.options.socketActiveTTL;
  }

  calcSocketTimeout(socket) {
    /**
     * return <= 0: should free socket
     * return > 0: should update socket timeout
     * return undefined: not find custom timeout
     */
    let freeSocketTimeout = this.options.freeSocketTimeout;
    const socketActiveTTL = this.options.socketActiveTTL;
    if (socketActiveTTL) {
      // check socketActiveTTL
      const aliveTime = Date.now() - socket[SOCKET_CREATED_TIME];
      const diff = socketActiveTTL - aliveTime;
      if (diff <= 0) {
        return diff;
      }
      if (freeSocketTimeout && diff < freeSocketTimeout) {
        freeSocketTimeout = diff;
      }
    }
    // set freeSocketTimeout
    if (freeSocketTimeout) {
      // set free keepalive timer
      // try to use socket custom freeSocketTimeout first, support headers['keep-alive']
      // https://github.com/node-modules/urllib/blob/b76053020923f4d99a1c93cf2e16e0c5ba10bacf/lib/urllib.js#L498
      const customFreeSocketTimeout = socket.freeSocketTimeout || socket.freeSocketKeepAliveTimeout;
      return customFreeSocketTimeout || freeSocketTimeout;
    }
  }

  keepSocketAlive(socket) {
    const result = super.keepSocketAlive(socket);
    // should not keepAlive, do nothing
    if (!result) return result;

    const customTimeout = this.calcSocketTimeout(socket);
    if (typeof customTimeout === 'undefined') {
      return true;
    }
    if (customTimeout <= 0) {
      debug('%s(requests: %s, finished: %s) free but need to destroy by TTL, request count %s, diff is %s',
        socket[SOCKET_NAME], socket[SOCKET_REQUEST_COUNT], socket[SOCKET_REQUEST_FINISHED_COUNT], customTimeout);
      return false;
    }
    if (socket.timeout !== customTimeout) {
      socket.setTimeout(customTimeout);
    }
    return true;
  }

  // only call on addRequest
  reuseSocket(...args) {
    // reuseSocket(socket, req)
    super.reuseSocket(...args);
    const socket = args[0];
    const req = args[1];
    req.reusedSocket = true;
    const agentTimeout = this.options.timeout;
    if (getSocketTimeout(socket) !== agentTimeout) {
      // reset timeout before use
      socket.setTimeout(agentTimeout);
      debug('%s reset timeout to %sms', socket[SOCKET_NAME], agentTimeout);
    }
    socket[SOCKET_REQUEST_COUNT]++;
    debug('%s(requests: %s, finished: %s) reuse on addRequest, timeout %sms',
      socket[SOCKET_NAME], socket[SOCKET_REQUEST_COUNT], socket[SOCKET_REQUEST_FINISHED_COUNT],
      getSocketTimeout(socket));
  }

  [CREATE_ID]() {
    const id = this[CURRENT_ID]++;
    if (this[CURRENT_ID] === Number.MAX_SAFE_INTEGER) this[CURRENT_ID] = 0;
    return id;
  }

  [INIT_SOCKET](socket, options) {
    // bugfix here.
    // https on node 8, 10 won't set agent.options.timeout by default
    // TODO: need to fix on node itself
    if (options.timeout) {
      const timeout = getSocketTimeout(socket);
      if (!timeout) {
        socket.setTimeout(options.timeout);
      }
    }

    if (this.options.keepAlive) {
      // Disable Nagle's algorithm: http://blog.caustik.com/2012/04/08/scaling-node-js-to-100k-concurrent-connections/
      // https://fengmk2.com/benchmark/nagle-algorithm-delayed-ack-mock.html
      socket.setNoDelay(true);
    }
    this.createSocketCount++;
    if (this.options.socketActiveTTL) {
      socket[SOCKET_CREATED_TIME] = Date.now();
    }
    // don't show the hole '-----BEGIN CERTIFICATE----' key string
    socket[SOCKET_NAME] = `sock[${this[CREATE_ID]()}#${options._agentKey}]`.split('-----BEGIN', 1)[0];
    socket[SOCKET_REQUEST_COUNT] = 1;
    socket[SOCKET_REQUEST_FINISHED_COUNT] = 0;
    installListeners(this, socket, options);
  }

  createConnection(options, oncreate) {
    let called = false;
    const onNewCreate = (err, socket) => {
      if (called) return;
      called = true;

      if (err) {
        this.createSocketErrorCount++;
        return oncreate(err);
      }
      this[INIT_SOCKET](socket, options);
      oncreate(err, socket);
    };

    const newSocket = super.createConnection(options, onNewCreate);
    if (newSocket) onNewCreate(null, newSocket);
  }

  get statusChanged() {
    const changed = this.createSocketCount !== this.createSocketCountLastCheck ||
      this.createSocketErrorCount !== this.createSocketErrorCountLastCheck ||
      this.closeSocketCount !== this.closeSocketCountLastCheck ||
      this.errorSocketCount !== this.errorSocketCountLastCheck ||
      this.timeoutSocketCount !== this.timeoutSocketCountLastCheck ||
      this.requestCount !== this.requestCountLastCheck;
    if (changed) {
      this.createSocketCountLastCheck = this.createSocketCount;
      this.createSocketErrorCountLastCheck = this.createSocketErrorCount;
      this.closeSocketCountLastCheck = this.closeSocketCount;
      this.errorSocketCountLastCheck = this.errorSocketCount;
      this.timeoutSocketCountLastCheck = this.timeoutSocketCount;
      this.requestCountLastCheck = this.requestCount;
    }
    return changed;
  }

  getCurrentStatus() {
    return {
      createSocketCount: this.createSocketCount,
      createSocketErrorCount: this.createSocketErrorCount,
      closeSocketCount: this.closeSocketCount,
      errorSocketCount: this.errorSocketCount,
      timeoutSocketCount: this.timeoutSocketCount,
      requestCount: this.requestCount,
      freeSockets: inspect(this.freeSockets),
      sockets: inspect(this.sockets),
      requests: inspect(this.requests),
    };
  }
}

// node 8 don't has timeout attribute on socket
// https://github.com/nodejs/node/pull/21204/files#diff-e6ef024c3775d787c38487a6309e491dR408
function getSocketTimeout(socket) {
  return socket.timeout || socket._idleTimeout;
}

function installListeners(agent, socket, options) {
  debug('%s create, timeout %sms', socket[SOCKET_NAME], getSocketTimeout(socket));

  // listener socket events: close, timeout, error, free
  function onFree() {
    // create and socket.emit('free') logic
    // https://github.com/nodejs/node/blob/master/lib/_http_agent.js#L311
    // no req on the socket, it should be the new socket
    if (!socket._httpMessage && socket[SOCKET_REQUEST_COUNT] === 1) return;

    socket[SOCKET_REQUEST_FINISHED_COUNT]++;
    agent.requestCount++;
    debug('%s(requests: %s, finished: %s) free',
      socket[SOCKET_NAME], socket[SOCKET_REQUEST_COUNT], socket[SOCKET_REQUEST_FINISHED_COUNT]);

    // should reuse on pedding requests?
    const name = agent.getName(options);
    if (socket.writable && agent.requests[name] && agent.requests[name].length) {
      // will be reuse on agent free listener
      socket[SOCKET_REQUEST_COUNT]++;
      debug('%s(requests: %s, finished: %s) will be reuse on agent free event',
        socket[SOCKET_NAME], socket[SOCKET_REQUEST_COUNT], socket[SOCKET_REQUEST_FINISHED_COUNT]);
    }
  }
  socket.on('free', onFree);

  function onClose(isError) {
    debug('%s(requests: %s, finished: %s) close, isError: %s',
      socket[SOCKET_NAME], socket[SOCKET_REQUEST_COUNT], socket[SOCKET_REQUEST_FINISHED_COUNT], isError);
    agent.closeSocketCount++;
  }
  socket.on('close', onClose);

  // start socket timeout handler
  function onTimeout() {
    // onTimeout and emitRequestTimeout(_http_client.js)
    // https://github.com/nodejs/node/blob/v12.x/lib/_http_client.js#L711
    const listenerCount = socket.listeners('timeout').length;
    // node <= 10, default listenerCount is 1, onTimeout
    // 11 < node <= 12, default listenerCount is 2, onTimeout and emitRequestTimeout
    // node >= 13, default listenerCount is 3, onTimeout,
    //   onTimeout(https://github.com/nodejs/node/pull/32000/files#diff-5f7fb0850412c6be189faeddea6c5359R333)
    //   and emitRequestTimeout
    const timeout = getSocketTimeout(socket);
    const req = socket._httpMessage;
    const reqTimeoutListenerCount = req && req.listeners('timeout').length || 0;
    debug('%s(requests: %s, finished: %s) timeout after %sms, listeners %s, defaultTimeoutListenerCount %s, hasHttpRequest %s, HttpRequest timeoutListenerCount %s',
      socket[SOCKET_NAME], socket[SOCKET_REQUEST_COUNT], socket[SOCKET_REQUEST_FINISHED_COUNT],
      timeout, listenerCount, defaultTimeoutListenerCount, !!req, reqTimeoutListenerCount);
    if (debug.enabled) {
      debug('timeout listeners: %s', socket.listeners('timeout').map(f => f.name).join(', '));
    }
    agent.timeoutSocketCount++;
    const name = agent.getName(options);
    if (agent.freeSockets[name] && agent.freeSockets[name].indexOf(socket) !== -1) {
      // free socket timeout, destroy quietly
      socket.destroy();
      // Remove it from freeSockets list immediately to prevent new requests
      // from being sent through this socket.
      agent.removeSocket(socket, options);
      debug('%s is free, destroy quietly', socket[SOCKET_NAME]);
    } else {
      // if there is no any request socket timeout handler,
      // agent need to handle socket timeout itself.
      //
      // custom request socket timeout handle logic must follow these rules:
      //  1. Destroy socket first
      //  2. Must emit socket 'agentRemove' event tell agent remove socket
      //     from freeSockets list immediately.
      //     Otherise you may be get 'socket hang up' error when reuse
      //     free socket and timeout happen in the same time.
      if (reqTimeoutListenerCount === 0) {
        const error = new Error('Socket timeout');
        error.code = 'ERR_SOCKET_TIMEOUT';
        error.timeout = timeout;
        // must manually call socket.end() or socket.destroy() to end the connection.
        // https://nodejs.org/dist/latest-v10.x/docs/api/net.html#net_socket_settimeout_timeout_callback
        socket.destroy(error);
        agent.removeSocket(socket, options);
        debug('%s destroy with timeout error', socket[SOCKET_NAME]);
      }
    }
  }
  socket.on('timeout', onTimeout);

  function onError(err) {
    const listenerCount = socket.listeners('error').length;
    debug('%s(requests: %s, finished: %s) error: %s, listenerCount: %s',
      socket[SOCKET_NAME], socket[SOCKET_REQUEST_COUNT], socket[SOCKET_REQUEST_FINISHED_COUNT],
      err, listenerCount);
    agent.errorSocketCount++;
    if (listenerCount === 1) {
      // if socket don't contain error event handler, don't catch it, emit it again
      debug('%s emit uncaught error event', socket[SOCKET_NAME]);
      socket.removeListener('error', onError);
      socket.emit('error', err);
    }
  }
  socket.on('error', onError);

  function onRemove() {
    debug('%s(requests: %s, finished: %s) agentRemove',
      socket[SOCKET_NAME],
      socket[SOCKET_REQUEST_COUNT], socket[SOCKET_REQUEST_FINISHED_COUNT]);
    // We need this function for cases like HTTP 'upgrade'
    // (defined by WebSockets) where we need to remove a socket from the
    // pool because it'll be locked up indefinitely
    socket.removeListener('close', onClose);
    socket.removeListener('error', onError);
    socket.removeListener('free', onFree);
    socket.removeListener('timeout', onTimeout);
    socket.removeListener('agentRemove', onRemove);
  }
  socket.on('agentRemove', onRemove);
}

module.exports = Agent;

function inspect(obj) {
  const res = {};
  for (const key in obj) {
    res[key] = obj[key].length;
  }
  return res;
}

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