first commit

app_vue/node_modules/@achrinza/node-ipc/dao/client.js

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+'use strict';
+
+const net = require('net'),
+    tls = require('tls'),
+    EventParser = require('../entities/EventParser.js'),
+    Message = require('js-message'),
+    fs = require('fs'),
+    Queue = require('@node-ipc/js-queue'),
+    Events = require('event-pubsub');
+
+let eventParser = new EventParser();
+
+class Client extends Events{
+    constructor(config,log){
+        super();
+        Object.assign(
+            this,
+            {
+                Client  : Client,
+                config  : config,
+                queue   : new Queue,
+                socket  : false,
+                connect : connect,
+                emit    : emit,
+                log     : log,
+                retriesRemaining:config.maxRetries||0,
+                explicitlyDisconnected: false
+            }
+        );
+
+        eventParser=new EventParser(this.config);
+    }
+}
+
+function emit(type,data){
+    this.log('dispatching event to ', this.id, this.path, ' : ', type, ',', data);
+
+    let message=new Message;
+    message.type=type;
+    message.data=data;
+
+    if(this.config.rawBuffer){
+        message=Buffer.from(type,this.config.encoding);
+    }else{
+        message=eventParser.format(message);
+    }
+
+    if(!this.config.sync){
+        this.socket.write(message);
+        return;
+    }
+
+    this.queue.add(
+        syncEmit.bind(this,message)
+    );
+}
+
+function syncEmit(message){
+    this.log('dispatching event to ', this.id, this.path, ' : ', message);
+    this.socket.write(message);
+}
+
+function connect(){
+    //init client object for scope persistance especially inside of socket events.
+    let client=this;
+
+    client.log('requested connection to ', client.id, client.path);
+    if(!this.path){
+        client.log('\n\n######\nerror: ', client.id ,' client has not specified socket path it wishes to connect to.');
+        return;
+    }
+
+    const options={};
+
+    if(!client.port){
+        client.log('Connecting client on Unix Socket :', client.path);
+
+        options.path=client.path;
+
+        if (process.platform ==='win32' && !client.path.startsWith('\\\\.\\pipe\\')){
+            options.path = options.path.replace(/^\//, '');
+            options.path = options.path.replace(/\//g, '-');
+            options.path= `\\\\.\\pipe\\${options.path}`;
+        }
+
+        client.socket = net.connect(options);
+    }else{
+        options.host=client.path;
+        options.port=client.port;
+
+        if(client.config.interface.localAddress){
+          options.localAddress=client.config.interface.localAddress;
+        }
+
+        if(client.config.interface.localPort){
+          options.localPort=client.config.interface.localPort;
+        }
+
+        if(client.config.interface.family){
+          options.family=client.config.interface.family;
+        }
+
+        if(client.config.interface.hints){
+          options.hints=client.config.interface.hints;
+        }
+
+        if(client.config.interface.lookup){
+          options.lookup=client.config.interface.lookup;
+        }
+
+        if(!client.config.tls){
+            client.log('Connecting client via TCP to', options);
+            client.socket = net.connect(options);
+        }else{
+            client.log('Connecting client via TLS to', client.path ,client.port,client.config.tls);
+            if(client.config.tls.private){
+                client.config.tls.key=fs.readFileSync(client.config.tls.private);
+            }
+            if(client.config.tls.public){
+                client.config.tls.cert=fs.readFileSync(client.config.tls.public);
+            }
+            if(client.config.tls.trustedConnections){
+                if(typeof client.config.tls.trustedConnections === 'string'){
+                    client.config.tls.trustedConnections=[client.config.tls.trustedConnections];
+                }
+                client.config.tls.ca=[];
+                for(let i=0; i<client.config.tls.trustedConnections.length; i++){
+                    client.config.tls.ca.push(
+                        fs.readFileSync(client.config.tls.trustedConnections[i])
+                    );
+                }
+            }
+
+            Object.assign(client.config.tls,options);
+
+            client.socket = tls.connect(
+                client.config.tls
+            );
+        }
+    }
+
+    client.socket.setEncoding(this.config.encoding);
+
+    client.socket.on(
+        'error',
+        function(err){
+            client.log('\n\n######\nerror: ', err);
+            client.publish('error', err);
+
+        }
+    );
+
+    client.socket.on(
+        'connect',
+        function connectionMade(){
+            client.publish('connect');
+            client.retriesRemaining=client.config.maxRetries;
+            client.log('retrying reset');
+        }
+    );
+
+    client.socket.on(
+        'close',
+        function connectionClosed(){
+            client.log('connection closed' ,client.id , client.path,
+            client.retriesRemaining, 'tries remaining of', client.config.maxRetries
+        );
+
+            if(
+                client.config.stopRetrying ||
+                client.retriesRemaining<1 ||
+                client.explicitlyDisconnected
+
+            ){
+                client.publish('disconnect');
+                client.log(
+                    (client.config.id),
+                    'exceeded connection rety amount of',
+                    ' or stopRetrying flag set.'
+                );
+
+                client.socket.destroy();
+                client.publish('destroy');
+                client=undefined;
+
+                return;
+            }
+
+            setTimeout(
+                function retryTimeout(){
+                    if (client.explicitlyDisconnected) {
+                        return;
+                    }
+                    client.retriesRemaining--;
+                    client.connect();
+                }.bind(null,client),
+                client.config.retry
+            );
+
+            client.publish('disconnect');
+        }
+    );
+
+    client.socket.on(
+        'data',
+        function(data) {
+            client.log('## received events ##');
+            if(client.config.rawBuffer){
+                client.publish(
+                   'data',
+                   Buffer.from(data,client.config.encoding)
+                );
+                if(!client.config.sync){
+                    return;
+                }
+
+                client.queue.next();
+                return;
+            }
+
+            if(!this.ipcBuffer){
+                this.ipcBuffer='';
+            }
+
+            data=(this.ipcBuffer+=data);
+
+            if(data.slice(-1)!=eventParser.delimiter || data.indexOf(eventParser.delimiter) == -1){
+                client.log('Messages are large, You may want to consider smaller messages.');
+                return;
+            }
+
+            this.ipcBuffer='';
+
+            const events = eventParser.parse(data);
+            const eCount = events.length;
+            for(let i=0; i<eCount; i++){
+                let message=new Message;
+                message.load(events[i]);
+
+                client.log('detected event', message.type, message.data);
+                client.publish(
+                   message.type,
+                   message.data
+                );
+            }
+
+            if(!client.config.sync){
+                return;
+            }
+
+            client.queue.next();
+        }
+    );
+}
+
+module.exports=Client;