added a=label attributes to combined SDP if no present

drachtio · Dec 13, 2018 · 72c2534 · 72c2534
1 parent 72d112e
commit 72c2534
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/lib/payload-combiner.js b/lib/payload-combiner.js
@@ -2,7 +2,9 @@ module.exports = function(sdp1, sdp2) {
   const arr1 = /^([^]+)(c=[^]+)t=[^]+(m=[^]+?)(a=[^]+)$/.exec(sdp1) ;
   const arr2 = /^([^]+)(c=[^]+)t=[^]+(m=[^]+?)(a=[^]+)$/.exec(sdp2) ;
 
-  const combinedSdp = `${arr1[1]}t=0 0\r\n${arr1[2]}${arr1[3]}${arr1[4]}${arr2[3]}${arr2[4]}`
+  const aLabel = sdp1.includes('a=label:') ? '' : 'a=label:1\r\n';
+  const bLabel = sdp2.includes('a=label:') ? '' : 'a=label:2\r\n';
+  const combinedSdp = `${arr1[1]}t=0 0\r\n${arr1[2]}${arr1[3]}${arr1[4]}${aLabel}${arr2[3]}${arr2[4]}${bLabel}`
     .replace(/a=sendonly\r\n/g, '')
     .replace(/a=direction:both\r\n/g, '');