我有一个问题,有时我需要重置WebRTC状态(例如我有时会收到此错误:
无法设置远程商品sdp:调用错误状态:kHaveLocalOffer
但是有可能在不删除和创建新的RTCPeerConnection对象的情况下这样做吗?我不想停止当前的本地视频捕捉......
但是有可能在不删除和创建新的RTCPeerConnection对象的情况下这样做吗?
是的,它被称为"rollback"
:
(async () => {
try {
const pc1 = new RTCPeerConnection(), pc2 = new RTCPeerConnection();
pc1.createDataChannel("dummy");
const offer1 = await pc1.createOffer();
// Say a remote offer comes in we're not ready for (most observable difference)
const offer2 = await pc2.createOffer({offerToReceiveAudio: true,
offerToReceiveVideo: true});
await pc1.setRemoteDescription(offer2);
console.log(pc1.getTransceivers().length); // 2
await pc1.setRemoteDescription({type: "rollback"}); // <---
await pc1.setLocalDescription(offer1);
console.log(pc1.getTransceivers().length); // 0
} catch(e) {
console.log(e);
}
})();
不幸的是,Chrome还没有实现"rollback"
,但它适用于Firefox。 Chrome说:
TypeError: Failed to execute 'setRemoteDescription' on 'RTCPeerConnection': The
provided value 'rollback' is not a valid enum value of type RTCSdpType.
请★this bug敦促Chrome修复它。