util.supports.binary => util.supports.sctp as well.

dist/peer.js

@@ -1742,7 +1742,7 @@ DataConnection.prototype.initialize = function(dc) {
 
 DataConnection.prototype._configureDataChannel = function() {
   var self = this;
-  if (util.supports.binary) {
+  if (util.supports.sctp) {
     this._dc.binaryType = 'arraybuffer';
   }
   this._dc.onopen = function() {
@@ -1830,7 +1830,7 @@ DataConnection.prototype.send = function(data) {
     var utf8 = (this.serialization === 'binary-utf8');
     var blob = util.pack(data, utf8);
     // DataChannel currently only supports strings.
-    if (!util.supports.binary) {
+    if (!util.supports.sctp) {
       util.blobToBinaryString(blob, function(str) {
         self._dc.send(str);
       });

lib/dataconnection.js

@@ -44,7 +44,7 @@ DataConnection.prototype.initialize = function(dc) {
 
 DataConnection.prototype._configureDataChannel = function() {
   var self = this;
-  if (util.supports.binary) {
+  if (util.supports.sctp) {
     this._dc.binaryType = 'arraybuffer';
   }
   this._dc.onopen = function() {
@@ -132,7 +132,7 @@ DataConnection.prototype.send = function(data) {
     var utf8 = (this.serialization === 'binary-utf8');
     var blob = util.pack(data, utf8);
     // DataChannel currently only supports strings.
-    if (!util.supports.binary) {
+    if (!util.supports.sctp) {
       util.blobToBinaryString(blob, function(str) {
         self._dc.send(str);
       });