added rate limiter in jarvis

1 files changed, 4 insertions, 0 deletions

diff --git a/examples/jarvis.js b/examples/jarvis.js
index 0b4b2fe..93061d7 100644
--- a/examples/jarvis.js
+++ b/examples/jarvis.js
@@ -137,8 +137,10 @@ var search = new Space();
 search.adhoc('jarvis'); // The search space is the word jarvis, so whenever that's caught, a relevant function can be called.
 var read = new Search(search);
 var expire = {};
+var limits = []; // an array of senders within the last 5 seconds to act as a 'rate limiter'
 
 function detectPrompt(send, tiles, locs){ // tries to detect the prompt ('jarvis') and calls respond if found.
+  if (limits.indexOf(send) >= 0) return;
   for (let i=0; i<locs.length; i++){
     let loc = locs[i];
     if (read.has(loc)){
@@ -150,6 +152,8 @@ function detectPrompt(send, tiles, locs){ // tries to detect the prompt ('jarvis
     if (results.length > 0) respond(results);
     expire[loc] = setTimeout(() => {read.del(loc)}, 30000);
   }
+  limits.push(send);
+  setTimeout(() => {limits.splice(limits.indexOf(send))});
 }
 
 let response = new Space();