wechat-socket.io-demo/utils/weapp-socket.io.js

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/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */
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t=this.io;this.subs=[_(t,"open",this.onopen.bind(this)),_(t,"packet",this.onpacket.bind(this)),_(t,"error",this.onerror.bind(this)),_(t,"close",this.onclose.bind(this))]}get active(){return!!this.subs}connect(){return this.connected||(this.subEvents(),this.io._reconnecting||this.io.open(),"open"===this.io._readyState&&this.onopen()),this}open(){return this.connect()}send(...t){return t.unshift("message"),this.emit.apply(this,t),this}emit(t,...e){var n,r,o;if(E.hasOwnProperty(t))throw new Error('"'+t.toString()+'" is a reserved event name');if(e.unshift(t),this._opts.retries&&!this.flags.fromQueue&&!this.flags.volatile)return this._addToQueue(e),this;const i={type:g.EVENT,data:e,options:{}};if(i.options.compress=!1!==this.flags.compress,"function"==typeof e[e.length-1]){const t=this.ids++,n=e.pop();this._registerAckCallback(t,n),i.id=t}const s=null===(r=null===(n=this.io.engine)||void 0===n?void 0:n.transport)||void 0===r?void 0:r.writable,a=this.connected&&!(null===(o=this.io.engine)||void 0===o?void 0:o._hasPingExpired());return this.flags.volatile&&!s||(a?(this.notifyOutgoingListeners(i),this.packet(i)):this.sendBuffer.push(i)),this.flags={},this}_registerAckCallback(t,e){var n;const r=null!==(n=this.flags.timeout)&&void 0!==n?n:this._opts.ackTimeout;if(void 0===r)return void(this.acks[t]=e);const o=this.io.setTimeoutFn(()=>{delete this.acks[t];for(let e=0;e<this.sendBuffer.length;e++)this.sendBuffer[e].id===t&&this.sendBuffer.splice(e,1);e.call(this,new Error("operation has timed out"))},r),i=(...t)=>{this.io.clearTimeoutFn(o),e.apply(this,t)};i.withError=!0,this.acks[t]=i}emitWithAck(t,...e){return new Promise((n,r)=>{const o=(t,e)=>t?r(t):n(e);o.withError=!0,e.push(o),this.emit(t,...e)})}_addToQueue(t){let e;"function"==typeof t[t.length-1]&&(e=t.pop());const n={id:this._queueSeq++,tryCount:0,pending:!1,args:t,flags:Object.assign({fromQueue:!0},this.flags)};t.push((t,...r)=>{if(n!==this._queue[0])return;return null!==t?n.tryCount>this._opts.retries&&(this._queue.shift(),e&&e(t)):(this._queue.shift(),e&&e(null,...r)),n.pending=!1,this._drainQueue()}),this._queue.push(n),this._drainQueue()}_drainQueue(t=!1){if(!this.connected||0===this._queue.length)return;const e=this._queue[0];e.pending&&!t||(e.pending=!0,e.tryCount++,this.flags=e.flags,this.emit.apply(this,e.args))}packet(t){t.nsp=this.nsp,this.io._packet(t)}onopen(){"function"==typeof this.auth?this.auth(t=>{this._sendConnectPacket(t)}):this._sendConnectPacket(this.auth)}_sendConnectPacket(t){this.packet({type:g.CONNECT,data:this._pid?Object.assign({pid:this._pid,offset:this._lastOffset},t):t})}onerror(t){this.connected||this.emitReserved("connect_error",t)}onclose(t,e){this.connected=!1,delete this.id,this.emitReserved("disconnect",t,e),this._clearAcks()}_clearAcks(){Object.keys(this.acks).forEach(t=>{if(!this.sendBuffer.some(e=>String(e.id)===t)){const e=this.acks[t];delete this.acks[t],e.withError&&e.call(this,new Error("socket has been disconnected"))}})}onpacket(t){if(t.nsp===this.nsp)switch(t.type){case g.CONNECT:t.data&&t.data.sid?this.onconnect(t.data.sid,t.data.pid):this.emitReserved("connect_error",new Error("It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)"));break;case g.EVENT:case g.BINARY_EVENT:this.onevent(t);break;case g.ACK:case g.BINARY_ACK:this.onack(t);break;case g.DISCONNECT:this.ondisconnect();break;case g.CONNECT_ERROR:this.destroy();const e=new Error(t.data.message);e.data=t.data.data,this.emitReserved("connect_error",e)}}onevent(t){const e=t.data||[];null!=t.id&&e.push(this.ack(t.id)),this.connected?this.emitEvent(e):this.receiveBuffer.push(Object.freeze(e))}emitEvent(t){if(this._anyListeners&&this._anyListeners.length){const e=this._anyListeners.slice();for(const n of e)n.apply(this,t)}super.emit.apply(this,t),this._pid&&t.length&&"string"==typeof t[t.length-1]&&(this._lastOffset=t[t.length-1])}ack(t){const e=this;let n=!1;return function(...r){n||(n=!0,e.packet({type:g.ACK,id:t,data:r}))}}onack(t){const e=this.acks[t.id];"function"==typeof e&&(delete this.acks[t.id],e.withError&&t.data.unshift(null),e.apply(this,t.data))}onconnect(t,e){this.id=t,this.recovered=e&&this._pid===e,this._pid=e,this.connected=!0,this.emitBuffered(),this.emitReserved("connect"),this._drainQueue(!0)}emitBuffered(){this.receiveBuffer.forEach(t=>this.emitEvent(t)),this.receiveBuffer=[],this.sendBuffer.forEach(t=>{this.notifyOutgoingListeners(t),this.packet(t)}),this.sendBuffer=[]}ondisconnect(){this.destroy(),this.onclose("io server disconnect")}destroy(){this.subs&&(this.subs.forEach(t=>t()),this.subs=void 0),this.io._destroy(this)}disconnect(){return this.connected&&this.packet({type:g.DISCONNECT}),this.destroy(),this.connected&&this.onclose("io client disconnect"),this}close(){return this.disconnect()}compress(t){return this.flags.compress=t,this}get volatile(){return this.flags.volatile=!0,this}timeout(t){return this.flags.timeout=t,this}onAny(t){return this._anyListeners=this._anyListeners||[],this._anyListeners.push(t),this}prependAny(t){return this._anyListeners=this._anyListeners||[],this._anyListeners.unshift(t),this}offAny(t){if(!this._anyListeners)return this;if(t){const e=this._anyListeners;for(let n=0;n<e.length;n++)if(t===e[n])return e.splice(n,1),this}else this._anyListeners=[];return this}listenersAny(){return this._anyListeners||[]}onAnyOutgoing(t){return this._anyOutgoingListeners=this._anyOutgoingListeners||[],this._anyOutgoingListeners.push(t),this}prependAnyOutgoing(t){return this._anyOutgoingListeners=this._anyOutgoingListeners||[],this._anyOutgoingListeners.unshift(t),this}offAnyOutgoing(t){if(!this._anyOutgoingListeners)return this;if(t){const e=this._anyOutgoingListeners;for(let n=0;n<e.length;n++)if(t===e[n])return e.splice(n,1),this}else this._anyOutgoingListeners=[];return this}listenersAnyOutgoing(){return this._anyOutgoingListeners||[]}notifyOutgoingListeners(t){if(this._anyOutgoingListeners&&this._anyOutgoingListeners.length){const e=this._anyOutgoingListeners.slice();for(const n of e)n.apply(this,t.data)}}}function k(t){t=t||{},this.ms=t.min||100,this.max=t.max||1e4,this.factor=t.factor||2,this.jitter=t.jitter>0&&t.jitter<=1?t.jitter:0,this.attempts=0}k.prototype.duration=function(){var t=this.ms*Math.pow(this.factor,this.attempts++);if(this.jitter){var e=Math.random(),n=Math.floor(e*this.jitter*t);t=0==(1&Math.floor(10*e))?t-n:t+n}return 0|Math.min(t,this.max)},k.prototype.reset=function(){this.attempts=0},k.prototype.setMin=function(t){this.ms=t},k.prototype.setMax=function(t){this.max=t},k.prototype.setJitter=function(t){this.jitter=t};class T extends s.Emitter{constructor(t,e){var n;super(),this.nsps={},this.subs=[],t&&"object"==typeof t&&(e=t,t=void 0),(e=e||{}).path=e.path||"/socket.io",this.opts=e,i.installTimerFunctions(this,e),this.reconnection(!1!==e.reconnection),this.reconnectionAttempts(e.reconnectionAttempts||1/0),this.reconnectionDelay(e.reconnectionDelay||1e3),this.reconnectionDelayMax(e.reconnectionDelayMax||5e3),this.randomizationFactor(null!==(n=e.randomizationFactor)&&void 0!==n?n:.5),this.backoff=new k({min:this.reconnectionDelay(),max:this.reconnectionDelayMax(),jitter:this.randomizationFactor()}),this.timeout(null==e.timeout?2e4:e.timeout),this._readyState="closed",this.uri=t;const o=e.parser||r;this.encoder=new o.Encoder,this.decoder=new o.Decoder,this._autoConnect=!1!==e.autoConnect,this._autoConnect&&this.open()}reconnection(t){return arguments.length?(this._reconnection=!!t,t||(this.skipReconnect=!0),this):this._reconnection}reconnectionAttempts(t){return void 0===t?this._reconnectionAttempts:(this._reconnectionAttempts=t,this)}reconnectionDelay(t){var e;return void 0===t?this._reconnectionDelay:(this._reconnectionDelay=t,null===(e=this.backoff)||void 0===e||e.setMin(t),this)}randomizationFactor(t){var e;return void 0===t?this._randomizationFactor:(this._randomizationFactor=t,null===(e=this.backoff)||void 0===e||e.setJitter(t),this)}reconnectionDelayMax(t){var e;return void 0===t?this._reconnectionDelayMax:(this._reconnectionDelayMax=t,null===(e=this.backoff)||void 0===e||e.setMax(t),this)}timeout(t){return arguments.length?(this._timeout=t,this):this._timeout}maybeReconnectOnOpen(){!this._reconnecting&&this._reconnection&&0===this.backoff.attempts&&this.reconnect()}open(t){if(~this._readyState.indexOf("open"))return this;this.engine=new i.Socket(this.uri,this.opts);const e=this.engine,n=this;this._readyState="opening",this.skipReconnect=!1;const r=_(e,"open",(function(){n.onopen(),t&&t()})),o=e=>{this.cleanup(),this._readyState="closed",this.emitReserved("error",e),t?t(e):this.maybeReconnectOnOpen()},s=_(e,"error",o);if(!1!==this._timeout){const t=this._timeout,n=this.setTimeoutFn(()=>{r(),o(new Error("timeout")),e.close()},t);this.opts.autoUnref&&n.unref(),this.subs.push(()=>{this.clearTimeoutFn(n)})}return this.subs.push(r),this.subs.push(s),this}connect(t){return this.open(t)}onopen(){this.cleanup(),this._readyState="open",this.emitReserved("open");const t=this.engine;this.subs.push(_(t,"ping",this.onping.bind(this)),_(t,"data",this.ondata.bind(this)),_(t,"error",this.onerror.bind(this)),_(t,"close",this.onclose.bind(this)),_(this.decoder,"decoded",this.ondecoded.bind(this)))}onping(){this.emitReserved("ping")}ondata(t){try{this.decoder.add(t)}catch(t){this.onclose("parse error",t)}}ondecoded(t){i.nextTick(()=>{this.emitReserved("packet",t)},this.setTimeoutFn)}onerror(t){this.emitReserved("error",t)}socket(t,e){let n=this.nsps[t];return n?this._autoConnect&&!n.active&&n.connect():(n=new A(this,t,e),this.nsps[t]=n),n}_destroy(t){const e=Object.keys(this.nsps);for(const t of e){if(this.nsps[t].active)return}this._close()}_packet(t){const e=this.encoder.encode(t);for(let n=0;n<e.length;n++)this.engine.write(e[n],t.options)}cleanup(){this.subs.forEach(t=>t()),this.subs.length=0,this.decoder.destroy()}_close(){this.skipReconnect=!0,this._reconnecting=!1,this.onclose("forced close")}disconnect(){return this._close()}onclose(t,e){var n;this.cleanup(),null===(n=this.engine)||void 0===n||n.close(),this.backoff.reset(),this._readyState="closed",this.emitReserved("close",t,e),this._reconnection&&!this.skipReconnect&&this.reconnect()}reconnect(){if(this._reconnecting||this.skipReconnect)return this;const t=this;if(this.backoff.attempts>=this._reconnectionAttempts)this.backoff.reset(),this.emitReserved("reconnect_failed"),this._reconnecting=!1;else{const e=this.backoff.duration();this._reconnecting=!0;const n=this.setTimeoutFn(()=>{t.skipReconnect||(this.emitReserved("reconnect_attempt",t.backoff.attempts),t.skipReconnect||t.open(e=>{e?(t._reconnecting=!1,t.reconnect(),this.emitReserved("reconnect_error",e)):t.onreconnect()}))},e);this.opts.autoUnref&&n.unref(),this.subs.push(()=>{this.clearTimeoutFn(n)})}}onreconnect(){const t=this.backoff.attempts;this._reconnecting=!1,this.backoff.reset(),this.emitReserved("reconnect",t)}}const O={};function R(t,e){"object"==typeof t&&(e=t,t=void 0),e=e||{};const n=o.url(t,e.path||"/socket.io"),r=n.source,i=n.id,s=n.path,a=O[i]&&s in O[i].nsps;let c;return e.forceNew||e["force new connection"]||!1===e.multiplex||a?c=new T(r,e):(O[i]||(O[i]=new T(r,e)),c=O[i]),n.query&&!e.query&&(e.query=n.queryKey),c.socket(n.path,e)}Object.assign(R,{Manager:T,Socket:A,io:R,connect:R})}])}));