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/scripts/start-flipper-server.ts

@@ -138,7 +138,10 @@ function launchServer() {
 }
 
 async function restartServer() {
-  proc?.kill(9);
+  if (proc) {
+    proc.kill(9);
+    await sleep(1000);
+  }
   try {
     await compileServerMain();
     await launchServer();
@@ -196,10 +199,13 @@ async function startWatchChanges() {
     await restartServer();
 
     if (argv.open) {
-      setTimeout(() => {
-        // TODO: make port configurable together with flipper-server
-        open('http://localhost:52342/index.web.dev.html');
-      }, 2000);
+      await sleep(2000);
+      // TODO: make port configurable together with flipper-server
+      open('http://localhost:52342/index.web.dev.html');
     }
   }
 })();
+
+function sleep(ms: number) {
+  return new Promise((r) => setTimeout(r, ms));
+}