我已经坚持了一段时间了。我的代码基于 https://webrtc.org/getting-started/firebase-rtc-codelab .我基本上只是将其更改为 React 和 firebase 实时数据库而不是 firestore。
const VideoRoom = () => {
const config = {
apiKey: xxx,
authDomain: xxx,
databaseURL: xxx,
projectId: xxx,
storageBucket: xxx,
messagingSenderId: xxx,
appId: xxx,
};
const rtcconfig = {
iceServers: [
{
urls: [
"stun:stun1.l.google.com:19302",
"stun:stun2.l.google.com:19302",
],
},
],
iceCandidatePoolSize: 10,
};
const { roomId } = useParams();
if (!firebase.apps.length) {
firebase.initializeApp(config);
}
const db = firebase.database();
const rooms = () => db.ref("rooms");
const room = (roomId) => db.ref(`rooms/${roomId}`);
const callerCandidates = (roomId) =>
db.ref(`rooms/${roomId}/callerCandidates`);
const calleeCandidates = (roomId) =>
db.ref(`rooms/${roomId}/calleeCandidates`);
const peerConnection = new RTCPeerConnection(rtcconfig);
var localStream = new MediaStream();
var remoteStream = null;
var localVideo = useRef(null);
var remoteVideo = useRef(null);
room(roomId)
.once("value")
.then((snapshot) => {
if (!snapshot.val()) {
createRoom();
return;
}
joinRoomById(roomId, snapshot.val());
});
useEffect(() => {
peerConnection.addEventListener("icegatheringstatechange", () => {
console.log(
`ICE gathering state changed: ${peerConnection.iceGatheringState}`
);
});
peerConnection.addEventListener("connectionstatechange", () => {
console.log(`Connection state change: ${peerConnection.connectionState}`);
});
peerConnection.addEventListener("signalingstatechange", () => {
console.log(`Signaling state change: ${peerConnection.signalingState}`);
});
peerConnection.addEventListener("iceconnectionstatechange ", () => {
console.log(
`ICE connection state change: ${peerConnection.iceConnectionState}`
);
});
});
const createRoom = async () => {
console.log("create room");
localStream.getTracks().forEach((track) => {
console.log("adding localStream to peerConnection");
peerConnection.addTrack(track, localStream);
});
peerConnection.addEventListener("icecandidate", (event) => {
console.log("listening for icecandidate on peerConnection");
if (!event.candidate) {
console.log("final icecandidate");
return;
}
console.log("callerCandidate written to database");
callerCandidates(roomId).set(event.candidate.toJSON());
});
const offer = await peerConnection.createOffer();
await peerConnection.setLocalDescription(offer);
console.log("Offer created and added to peerConnection local description");
const roomWithOffer = {
offer: {
type: offer.type,
sdp: offer.sdp,
},
};
await room(roomId).update(roomWithOffer);
console.log("Offer written to room database document");
peerConnection.addEventListener("track", (event) => {
event.streams[0].getTracks().forEach((track) => {
console.log(
"listening for track on peerConnection and adding them to remoteStream"
);
remoteStream.addTrack(track);
});
});
room(roomId).on("value", async (snapshot) => {
console.log("listening for remote session in room database document");
const data = snapshot.val();
if (!peerConnection.currentRemoteDescription && data && data.answer) {
console.log("Got remote description: ", data.answer);
const rtcSessionDescription = new RTCSessionDescription(data.answer);
await peerConnection.setRemoteDescription(rtcSessionDescription);
}
});
calleeCandidates(roomId).on("value", (snapshot) => {
console.log(
"listening for remote ICE candidates in room/calleCandidates database document"
);
if (snapshot.val()) {
snapshot.val().forEach(async (change) => {
if (change.type === "added") {
let data = change.doc.data();
await peerConnection.addIceCandidate(new RTCIceCandidate(data));
}
});
}
});
};
};
我通过 React 路由器获取 roomId,为了可读性,我省略了组件的其余部分。
控制台返回如下:
创建房间
信号状态变化:have-local-offer
优惠已创建并添加到 peerConnection 本地描述
ICE 收集状态更改:完成
在 peerConnection 上监听 icecandidate
最终冰候选人
将 localStream 添加到 peerConnection
报价写入房间数据库文件
在 room/calleCandidates 数据库文件中监听远程 ICE 候选人
在房间数据库文件中监听远程 session
在 about:webrtc firefox 选项卡中,我可以看到报价已成功创建,但没有任何 ice 候选人
提前致谢!
最佳答案
因此,事实证明,ICE 候选人收集仅在将某些轨道添加到流中时才开始,并且必须在创建报价之前完成。
因此,如果您在创建报价之前收集媒体并将其添加到 RTCPeerConnection 实例,那么您将看到正确收集 ICE 候选人。
编辑:除此之外,如果您在创建报价时提供如下选项,它将按预期开始 ICE 收集:
await this.connection.createOffer({
offerToReceiveAudio: true,
offerToReceiveVideo: true,
});
希望对您有所帮助!
关于reactjs - 没有 Ice Candidates 聚集,peerConnection.iceGatheringState 立即返回 "complete",我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/61325035/