0.3.7 add better error handling to avoid econnrest exception

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@uci/websocket",
-  "version": "0.3.6",
+  "version": "0.3.7",
   "description": "JSON packet host websocket server",
   "main": "src",
   "scripts": {
@@ -42,6 +42,7 @@
   },
   "dependencies": {
     "@uci-utils/logger": "0.0.14",
+    "await-to-js": "^2.1.1",
     "better-try-catch": "^0.6.2",
     "clone": "^2.1.2",
     "death": "^1.1.0",

src/socket.js

@@ -1,5 +1,6 @@
 import WebSocket from 'ws'
 import btc from 'better-try-catch'
+import to from 'await-to-js'
 import { promisify } from 'util'
 import _ON_DEATH from 'death' //this is intentionally ugly
 import clone from 'clone'
@@ -70,6 +71,16 @@ class Socket extends WebSocket.Server {
       let send = this._send.bind(socket)
       log.debug({method:'_listen', line:71, req: req, msg: 'new consumer connecting'})
       socket.address = req.remoteAddress
+
+      socket.on('error', (err) => {
+        log.error({msg:'client connection error during listen',error:err})
+      })
+
+      socket.on('close', (msg) => {
+        log.warn({msg:'client connection closed during listen',error:msg})
+      })
+
+
       socket.on('message', messageProcess.bind(this, socket))
 
       async function messageProcess(client, strPacket) {
@@ -133,14 +144,15 @@ class Socket extends WebSocket.Server {
 
   // must have a consumer socket instance bound to call this function
   async _send(packet) {
-    return new Promise((resolve, reject) => {
-      if (this.readyState !== 1)
-        reject(`Connection not Ready, CODE:${this.readyState}`)
+    if (this.readyState !== 1)  log.error({method:'_send', line:147, msg:`Connection not Ready, CODE:${this.readyState}`})
+    else {
       let [err, message] = btc(JSON.stringify)(packet)
-      if (err) reject(`Could not JSON stringify: ${packet}`)
-      this.send(message)
-      resolve('sent packet')
-    })
+      if (err) log.error({method:'_send', line:147, msg:`WS Could not JSON stringify: ${packet}`})
+      else {
+        try { this.send(message) }
+        catch(err) {  log.error({method:'_send', line:153, msg:'error sending from ws server', error:err}) }
+      }
+    }
   }
 } // end class