@walletconnect/jsonrpc-ws-connection/dist/index.es.js

WS Connection for JSON-RPC

import{EventEmitter as l}from"events";import{safeJsonStringify as u,safeJsonParse as p}from"@walletconnect/safe-json";import{isWsUrl as c,isReactNative as g,isLocalhostUrl as y,formatJsonRpcError as k,parseConnectionError as m}from"@walletconnect/jsonrpc-utils";const v=()=>typeof WebSocket<"u"?WebSocket:typeof global<"u"&&typeof global.WebSocket<"u"?global.WebSocket:typeof window<"u"&&typeof window.WebSocket<"u"?window.WebSocket:typeof self<"u"&&typeof self.WebSocket<"u"?self.WebSocket:require("ws"),w=()=>typeof WebSocket<"u"||typeof global<"u"&&typeof global.WebSocket<"u"||typeof window<"u"&&typeof window.WebSocket<"u"||typeof self<"u"&&typeof self.WebSocket<"u",d=r=>r.split("?")[0],h=10,b=v();class f{constructor(e){if(this.url=e,this.events=new l,this.registering=!1,!c(e))throw new Error(`Provided URL is not compatible with WebSocket connection: ${e}`);this.url=e}get connected(){return typeof this.socket<"u"}get connecting(){return this.registering}on(e,t){this.events.on(e,t)}once(e,t){this.events.once(e,t)}off(e,t){this.events.off(e,t)}removeListener(e,t){this.events.removeListener(e,t)}async open(e=this.url){await this.register(e)}async close(){return new Promise((e,t)=>{if(typeof this.socket>"u"){t(new Error("Connection already closed"));return}this.socket.onclose=n=>{this.onClose(n),e()},this.socket.close()})}async send(e){typeof this.socket>"u"&&(this.socket=await this.register());try{this.socket.send(u(e))}catch(t){this.onError(e.id,t)}}register(e=this.url){if(!c(e))throw new Error(`Provided URL is not compatible with WebSocket connection: ${e}`);if(this.registering){const t=this.events.getMaxListeners();return(this.events.listenerCount("register_error")>=t||this.events.listenerCount("open")>=t)&&this.events.setMaxListeners(t+1),new Promise((n,s)=>{this.events.once("register_error",o=>{this.resetMaxListeners(),s(o)}),this.events.once("open",()=>{if(this.resetMaxListeners(),typeof this.socket>"u")return s(new Error("WebSocket connection is missing or invalid"));n(this.socket)})})}return this.url=e,this.registering=!0,new Promise((t,n)=>{const s=g()?void 0:{rejectUnauthorized:!y(e)},o=new b(e,[],s);w()?o.onerror=i=>{const a=i;n(this.emitError(a.error))}:o.on("error",i=>{n(this.emitError(i))}),o.onopen=()=>{this.onOpen(o),t(o)}})}onOpen(e){e.onmessage=t=>this.onPayload(t),e.onclose=t=>this.onClose(t),this.socket=e,this.registering=!1,this.events.emit("open")}onClose(e){this.socket=void 0,this.registering=!1,this.events.emit("close",e)}onPayload(e){if(typeof e.data>"u")return;const t=typeof e.data=="string"?p(e.data):e.data;this.events.emit("payload",t)}onError(e,t){const n=this.parseError(t),s=n.message||n.toString(),o=k(e,s);this.events.emit("payload",o)}parseError(e,t=this.url){return m(e,d(t),"WS")}resetMaxListeners(){this.events.getMaxListeners()>h&&this.events.setMaxListeners(h)}emitError(e){const t=this.parseError(new Error(e?.message||`WebSocket connection failed for host: ${d(this.url)}`));return this.events.emit("register_error",t),t}}export{f as WsConnection,f as default};
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