This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
The read-only RTCDataChannel
property ordered
indicates whether or not the data channel guarantees in-order delivery of messages; the default is true
, which indicates that the data channel is indeed ordered. This is set when the RTCDataChannel
is created, by setting the ordered
property on the RTCDataChannelInit
object passed as RTCPeerConnection.createDataChannel()
's options
parameter.
Syntax
var ordered = aDataChannel.ordered;
A Boolean
value which is true
if in-order delivery is guaranteed and is otherwise false
.
Example
var pc = new RTCPeerConnection();
var dc = pc.createDataChannel("my channel");
if (!dc.ordered) {
// Handle unordered messaging
}
Specifications
Specification | Status | Comment |
---|---|---|
WebRTC 1.0: Real-time Communication Between Browser The definition of 'RTCDataChannel.ordered' in that specification. |
Working Draft | Initial specification. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | (Yes) | 24 (24) [1] | No support | (Yes) | ? |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
---|---|---|---|---|---|---|---|
Basic support | No support | 28 [2] | 24.0 (24) [1] | No support | No support | No support | (Yes) |
[1] The interface is called DataChannel
and not RTCDataChannel
in Firefox. However, a binding has been in place since Firefox 24 so that either name will work.
[2] WebRTC, including RTCDataChannel
, was introduced in Chrome 28 for Android behind a flag, and enabled by default starting in Chrome 29 for Android.