fix(NddService): fix NddService socket.on('data') for large input

This patch fixes NddService.server socker.on('data') so that it can handle large amounts of input without throwing `SyntaxError: Unexpected end of JSON input` errors.

Fixes GoogleChromeLabs#319

services/ndd_service.js

@@ -95,8 +95,13 @@ class NddService {
  const pipeName = `node-ndb.${process.pid}.sock`;
  this._pipe = path.join(pipePrefix, pipeName);
  const server = net.createServer(socket => {
+ const chunks = [];
  socket.on('data', async d => {
- const runSession = await this._startSession(JSON.parse(d), frontend);
+ chunks.push(d);
+ });
+ socket.on('end', async() => {
+ const data = Buffer.concat(chunks);
+ const runSession = await this._startSession(JSON.parse(data), frontend);
  socket.write('run');
  runSession();
  });