设置远程报价sdp失败:使用没有SDES加密的sdp调用



尝试使用基于APpRtcDemo的Android应用程序。当从Chrome 34连接一切都很好,但是当我使用Chrome 35视频通话时,我得到了这个错误。

 onSetFailure: Failed to set remote offer sdp: Called with SDP without SDES crypto.

这里是媒体约束,我想用

sdpMediaConstraints = new MediaConstraints();
sdpMediaConstraints.mandatory.add(new MediaConstraints.KeyValuePair("OfferToReceiveAudio", "true"));        
sdpMediaConstraints.mandatory.add(new MediaConstraints.KeyValuePair("OfferToReceiveVideo", "true"));
sdpMediaConstraints.optional.add(new MediaConstraints.KeyValuePair("DtlsSrtpKeyAgreement", "true"));

这里是代码设置远程描述

    pc.setRemoteDescription(sdpObserver, new SessionDescription(
            SessionDescription.Type.OFFER, description.toString()));

通过为Peerconnection对象的创建添加约束来修复此问题。

DtlsSrtpKeyAgreement:true

pc = factory.createPeerConnection(iceServers, constraints, pcObserver);

where constraints has DtlsSrtpKeyAgreement:true key value.

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