Use uniform Socket message size to avoid disconnects

Summary: During startup the socket connection would close a few times, among others because Scribe dumps 1.3 MB of data after startup, and the maximum payload of `socket.io` defaults to 1MB. This diff changes it to 100MB (the max size used by `ws` library). We know that we need at least > 10 MB, as that is what plugins like Network cap at.

Reviewed By: aigoncharov

Differential Revision: D33017653

fbshipit-source-id: 1233af6fbdc4b9eed42786ee418cfd6d43b2b433

desktop/flipper-server/src/startBaseServer.tsx

@@ -12,6 +12,7 @@ import http from 'http';
 import path from 'path';
 import fs from 'fs-extra';
 import socketio from 'socket.io';
+import {WEBSOCKET_MAX_MESSAGE_SIZE} from 'flipper-server-core';
 
 type Config = {
   port: number;
@@ -61,6 +62,8 @@ function startAssetServer(
 }
 
 function addWebsocket(server: http.Server) {
-  const io = new socketio.Server(server);
+  const io = new socketio.Server(server, {
+    maxHttpBufferSize: WEBSOCKET_MAX_MESSAGE_SIZE,
+  });
   return io;
 }