The read-only RTCIceTransport property role indicates which ICE role the transport is fulfilling: that of the controlling agent, or the agent that is being controlled.
You can learn more about ICE roles in Choosing a candidate pair in WebRTC connectivity.
iceRole = RTCIceTransport.role;
A DOMString specifying whether the RTCIceTransport represents the controlling agent or the controlled agent. The value must be one of those found in the enumerated type RTCIceRole:
"controlling"RTCIceTransport object is serving as the controlling agent."controlled"| Specification | Status | Comment |
|---|---|---|
| WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCIceTransport.role' in that specification. | Candidate Recommendation | Initial definition. |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | No | 12 | No | No | No | No |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | No | No | ? | No | No | No | No |
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https://developer.mozilla.org/en-US/docs/Web/API/RTCIceTransport/role