Updated changelog and package.json for release

We shouldn't be trying to read the message length out of the middle of a message when there are multiple segments.

Fixes https://github.com/parnic/node-screenlogic/issues/5 (for real this time, I hope...I don't have a way to test)

CHANGELOG.md

@@ -4,7 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## v1.2.0 - 2017-06-20
+## v1.2.1 - 2019-03-26
+### Fixed
+* Messages larger than 1024 bytes are now handled properly.
+
+## v1.2.0 - 2019-02-22
 ### Added
 * Remote connection through Pentair servers
 * Connecting to password-protected systems (this is only enforced by the ScreenLogic system on remote connections)

index.js

@@ -124,8 +124,26 @@ class UnitConnection extends EventEmitter {
     this.password = password;
     this.client = new net.Socket();
     var _this = this;
+    var buffer = Buffer.alloc(1024);
+    var bufferIdx = 0;
+    var expectedMsgLen = 0;
+
     this.client.on('data', function(msg) {
-      _this.onClientMessage(msg);
+      if (buffer.length < msg.length + bufferIdx) {
+        buffer = Buffer.alloc(msg.length + buffer.length, buffer);
+      }
+
+      if (bufferIdx === 0) {
+        expectedMsgLen = msg.readInt32LE(4) + 8;
+      }
+
+      msg.copy(buffer, bufferIdx);
+      bufferIdx = bufferIdx + msg.length;
+
+      if (bufferIdx === expectedMsgLen) {
+        _this.onClientMessage(buffer.slice(0, expectedMsgLen));
+        bufferIdx = 0;
+      }
     }).on('close', function(had_error) {
       // console.log('unit connection closed');
     });

package.json

@@ -1,7 +1,7 @@
 {
 	"name": "node-screenlogic",
 	"description": "Tool for connecting to Pentair ScreenLogic systems on the local network",
-	"version": "1.1.0",
+	"version": "1.2.1",
 	"main": "index.js",
 	"license": "MIT",
 	"repository": "https://github.com/parnic/node-screenlogic.git",