From 5079f05d5bdcf6e486766dfbb6856d3c0ec70c78 Mon Sep 17 00:00:00 2001
From: Nulo <git@nulo.in>
Date: Sun, 5 Mar 2023 23:09:30 -0300
Subject: [PATCH] correctly parse non-numeric ip addresses

correctly address mDNS addresses used to anonimize in desktop Chromium and Firefox
---
 index.html | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/index.html b/index.html
index f9edefd..f2d612c 100644
--- a/index.html
+++ b/index.html
@@ -58,10 +58,12 @@
                 var pc = new RTCPeerConnection(servers, mediaConstraints);
 
                 function handleCandidate(candidate){
-                    //match just the IP address
-                    var ip_regex = /([0-9]{1,3}(\.[0-9]{1,3}){3}|[a-f0-9]{1,4}(:[a-f0-9]{1,4}){7})/
-                    var ip_addr = ip_regex.exec(candidate)[1];
-
+                    if (!candidate) return
+                    //https://datatracker.ietf.org/doc/html/rfc5245#section-15.1
+                    console.debug(candidate)
+                    const things = candidate.split(' ')
+                    const ip_addr = things[4]
+                    
                     //remove duplicates
                     if(ip_dups[ip_addr] === undefined)
                         callback(ip_addr);
@@ -71,7 +73,6 @@
 
                 //listen for candidate events
                 pc.onicecandidate = function(ice){
-
                     //skip non-candidate events
                     if(ice.candidate)
                         handleCandidate(ice.candidate.candidate);
@@ -88,7 +89,7 @@
 
                 }, function(){});
 
-                //wait for a while to let everything done
+                // wait for a while to let everything done
                 setTimeout(function(){
                     //read candidate info from local description
                     var lines = pc.localDescription.sdp.split('\n');