This isn't FULLY functional, but it's what I've made thus far... I'm still working on a Ice Disconnect somewhere at least for me - welcome to test.

This commit is contained in:
2026-04-18 18:05:22 -04:00
parent b70189c619
commit a2608ffab9
8 changed files with 300 additions and 272 deletions

View File

@@ -610,11 +610,11 @@ public partial class MainPage : ContentPage
Console.WriteLine($"[{_username}] sent RTC signal: {rtcSignal.Type} -> {rtcSignal.ChannelId}");
} //Remove?
//public async Task<string> GetRtcParticipants() // TODO: UNCOMMENT AND ADD
//{
// var participants = await ServerAPI.GetRtcParticipantsAsync(_currentChannelId);
// return JsonSerializer.Serialize(participants);
//}
public async Task<string> GetRtcParticipants()
{
var participants = await ServerAPI.GetRtcParticipantsAsync(_currentChannelId);
return JsonSerializer.Serialize(participants);
}
#endregion
private void OnSendMessageButtonClicked(object sender, EventArgs e)

View File

@@ -35,11 +35,7 @@
<div id="localMediaStatus">Waiting for local media...</div>
</div>
<div style="display: inline-block; vertical-align: top;">
<video id="remoteVideo" autoplay playsinline style="width: 320px; height: 240px; background: #111;"></video>
<div id="remoteVideoStatus">Remote video: waiting...</div>
<div id="remoteMediaStatus">Remote media: waiting...</div>
</div>
<div id="remoteMediaContainer" class="remote-media-container"></div>
</div>
<div style="margin-top: 10px;">

View File

@@ -42,63 +42,6 @@ function hasAudioTrack() {
return !!localStream && localStream.getAudioTracks().length > 0;
}
async function ensurePeerConnection() {
if (peerConnection) return;
peerConnection = new RTCPeerConnection({
iceServers: [{ urls: "stun:stun.l.google.com:19302" }]
});
peerConnection.onicecandidate = (event) => {
if (event.candidate) {
LogMessage("ICE candidate gathered");
}
};
peerConnection.ontrack = (event) => {
LogMessage("Remote track received");
const remoteVideo = document.getElementById("remoteVideo");
const remoteVideoStatus = document.getElementById("remoteVideoStatus");
const remoteMediaStatus = document.getElementById("remoteMediaStatus");
const stream = event.streams[0];
const hasVideo = stream.getVideoTracks().length > 0;
const hasAudio = stream.getAudioTracks().length > 0;
if (hasVideo) {
remoteVideo.srcObject = stream;
} else {
remoteVideo.srcObject = null;
}
if (remoteVideoStatus) {
remoteVideoStatus.textContent = hasVideo
? "Remote video: active"
: "Remote video: unavailable";
}
if (remoteMediaStatus) {
remoteMediaStatus.textContent = `Remote media: audio=${hasAudio} video=${hasVideo}`;
}
};
peerConnection.onconnectionstatechange = () => {
LogMessage("Connection state: " + peerConnection.connectionState);
const remoteMediaStatus = document.getElementById("remoteMediaStatus");
if (remoteMediaStatus && peerConnection.connectionState === "connected") {
remoteMediaStatus.textContent += " | connected";
}
};
peerConnection.oniceconnectionstatechange = () => {
LogMessage("ICE connection state: " + peerConnection.iceConnectionState);
};
peerConnection.onicegatheringstatechange = () => {
LogMessage("ICE gathering state: " + peerConnection.iceGatheringState);
};
} //Remove?
async function ensureLocalMedia(forceReload = false) {
const localMediaStatus = document.getElementById("localMediaStatus");
const localVideoStatus = document.getElementById("localVideoStatus");
@@ -174,31 +117,34 @@ async function ensureLocalMedia(forceReload = false) {
}
}
async function applyLocalStreamToPeerConnection() {
if (!peerConnection || !localStream) return;
const senders = peerConnection.getSenders();
async function applyLocalStreamToPeerConnections() {
if (!localStream) return;
const audioTrack = localStream.getAudioTracks()[0] || null;
const videoTrack = localStream.getVideoTracks()[0] || null;
for (const username of Object.keys(peerConnections)) {
const pc = peerConnections[username];
const senders = pc.getSenders();
const audioSender = senders.find(s => s.track && s.track.kind === "audio");
const videoSender = senders.find(s => s.track && s.track.kind === "video");
if (audioSender) {
await audioSender.replaceTrack(audioTrack);
LogMessage("Replaced audio track on peer connection");
LogMessage(`Replaced audio track for ${username}`);
} else if (audioTrack) {
peerConnection.addTrack(audioTrack, localStream);
LogMessage("Added audio track to peer connection");
pc.addTrack(audioTrack, localStream);
LogMessage(`Added audio track for ${username}`);
}
if (videoSender) {
await videoSender.replaceTrack(videoTrack);
LogMessage("Replaced video track on peer connection");
LogMessage(`Replaced video track for ${username}`);
} else if (videoTrack) {
peerConnection.addTrack(videoTrack, localStream);
LogMessage("Added video track to peer connection");
pc.addTrack(videoTrack, localStream);
LogMessage(`Added video track for ${username}`);
}
}
}
@@ -206,238 +152,188 @@ async function refreshDevicesAndPreview() {
await loadDevices();
await ensureLocalMedia(true);
if (peerConnection) {
await applyLocalStreamToPeerConnection();
if (Object.keys(peerConnections).length > 0) {
await applyLocalStreamToPeerConnections();
}
}
async function joinChannelCall() {
LogMessage("Current username: " + currentUsername);
LogMessage("Current channel: " + currentChannelId);
// LogMessage("Joining RTCChannel");
let active = await window.HybridWebView.InvokeDotNet("JoinRtcChannel");
await channelCallJoin(active);
// LogMessage("Joined RTCChannel");
// return;
// try {
// if (!currentChannelId) {
// LogMessage("No current channel set.");
// return;
// }
//
// await ensurePeerConnection();
// await ensureLocalMedia();
//
// LogMessage(`Joining call with media: audio=${hasAudioTrack()} video=${hasVideoTrack()}`);
//
// const payload = {
// type: "rtc_join",
// from: currentUsername,
// channelId: currentChannelId
// };
//
// LogMessage("Requesting join for channel " + currentChannelId);
// await window.HybridWebView.InvokeDotNet("SendRtcSignal", [JSON.stringify(payload)]);
// } catch (err) {
// LogMessage("joinChannelCall failed: " + err);
// }
} //Combine with channelCallJoin
async function ensurePeerConnectionForUser(username)
{
if (peerConnection) return;
peerConnection = new RTCPeerConnection(configuration);
peerConnection.onicegatheringstatechange = () => {
console.log(`ICE gathering state changed: ${peerConnection.iceGatheringState}`);
};
peerConnection.onconnectionstatechange = () => {
console.log(`Connection state change: ${peerConnection.connectionState}`);
};
peerConnection.onsignalingstatechange = () => {
console.log(`Signaling state change: ${peerConnection.signalingState}`);
};
peerConnection.oniceconnectionstatechange = () => {
console.log(`ICE connection state change: ${peerConnection.iceConnectionState}`);
};
peerConnection.onicecandidate = async (event) => {
console.log(`Ice Candidate: ${JSON.stringify(event.candidate)}`);
// LogMessage(`Ice Candidate: ${JSON.stringify(event.candidate)}`);
await window.HybridWebView.InvokeDotNet("WriteIceCandidate", [JSON.stringify(event.candidate)]);
//await IceCandidateAdded(event.candidate);
};
peerConnection.ontrack = (event) => {
LogMessage("Remote track received");
const remoteVideo = document.getElementById("remoteVideo");
const remoteVideoStatus = document.getElementById("remoteVideoStatus");
const remoteMediaStatus = document.getElementById("remoteMediaStatus");
const stream = event.streams[0];
const hasVideo = stream.getVideoTracks().length > 0;
const hasAudio = stream.getAudioTracks().length > 0;
if (hasVideo) {
remoteVideo.srcObject = stream;
} else {
remoteVideo.srcObject = null;
}
if (remoteVideoStatus) {
remoteVideoStatus.textContent = hasVideo
? "Remote video: active"
: "Remote video: unavailable";
}
if (remoteMediaStatus) {
remoteMediaStatus.textContent = `Remote media: audio=${hasAudio} video=${hasVideo}`;
}
};
}
async function channelCallJoin(activeCall)
{
// LogMessage("Active call: " + activeCall);
await ensurePeerConnectionForUser();
await window.HybridWebView.InvokeDotNet("JoinRtcChannel");
await ensureLocalMedia();
await applyLocalStreamToPeerConnection();
if (activeCall)
{
const rawJson = await window.HybridWebView.InvokeDotNet("GetRtcOffer");
const offer = typeof rawJson === "string" ? JSON.parse(rawJson) : rawJson;
await peerConnection.setRemoteDescription(offer);
const answer = await peerConnection.createAnswer();
await peerConnection.setLocalDescription(answer);
const rawParticipants = await window.HybridWebView.InvokeDotNet("GetRtcParticipants");
const participants = typeof rawParticipants === "string"
? JSON.parse(rawParticipants)
: rawParticipants;
// LogMessage("Joining call with media answer: " + JSON.stringify(answer));
// LogMessage("Calling C# WriteRtcAnswer with: " + JSON.stringify(answer));
await window.HybridWebView.InvokeDotNet("WriteRtcAnswer", [JSON.stringify(answer)]);
}
else
{
const offer = await peerConnection.createOffer();
await peerConnection.setLocalDescription(offer);
LogMessage("Participants: " + JSON.stringify(participants)); // TODO: Remove
await window.HybridWebView.InvokeDotNet("WriteRtcOffer", [JSON.stringify(offer)]);
LogMessage(`Joining call with media offer: ${JSON.stringify(offer)}`);
}
}
async function AnswerCallbackJS(answer)
{
answer.sdp = answer.sdp.replaceAll("(rn)", "\r\n");
// LogMessage("Answer: " + JSON.stringify(answer));
for (const username of participants) {
if (username === currentUsername) continue;
// LogMessage("RemoteDescription: " + peerConnection.currentRemoteDescription);
const pc = await ensurePeerConnectionForUser(username);
if (!peerConnection.currentRemoteDescription && answer)
{
LogMessage("Current answer: " + JSON.stringify(answer));
const desc = new RTCSessionDescription(answer);
await peerConnection.setRemoteDescription(desc);
for (const candidate of candidateQueue) {
await peerConnection.addIceCandidate(candidate);
}
}
}
async function IceCandidateAdded(candidate)
{
if (peerConnection.currentRemoteDescription) {
await peerConnection.addIceCandidate(candidate);
// LogMessage("ICE CANDIDATE ADDED: " + JSON.stringify(candidate));
}
else {
// LogMessage("RemoteDescription Missing")
candidateQueue.push(candidate);
const offer = await pc.createOffer();
await pc.setLocalDescription(offer);
const payload = {
type: "rtc_offer",
from: currentUsername,
to: username,
channelId: currentChannelId,
sdp: offer.sdp
};
await window.HybridWebView.InvokeDotNet("SendRtcSignal", [JSON.stringify(payload)]);
LogMessage(`Sent offer to ${username}`);
}
}
async function RtcLeaveCall()
{}
async function ensurePeerConnectionForUser(username) {
if (peerConnections[username]) return peerConnections[username];
const pc = new RTCPeerConnection(configuration);
peerConnections[username] = pc;
pc.onicegatheringstatechange = () => {
console.log(`ICE gathering state changed for ${username}: ${pc.iceGatheringState}`);
};
pc.onconnectionstatechange = () => {
console.log(`Connection state change for ${username}: ${pc.connectionState}`);
};
pc.onsignalingstatechange = () => {
console.log(`Signaling state change for ${username}: ${pc.signalingState}`);
};
pc.oniceconnectionstatechange = () => {
console.log(`ICE connection state change for ${username}: ${pc.iceConnectionState}`);
};
pc.onicecandidate = async (event) => {
if (!event.candidate) return;
await window.HybridWebView.InvokeDotNet("WriteIceCandidate", [JSON.stringify(event.candidate)]);
};
pc.ontrack = (event) => {
LogMessage(`Remote track received from ${username}`);
if (!remoteStreams[username]) {
remoteStreams[username] = new MediaStream();
}
const stream = remoteStreams[username];
event.streams[0].getTracks().forEach(track => {
if (!stream.getTracks().some(t => t.id === track.id)) {
stream.addTrack(track);
}
});
const remoteVideo = ensureRemoteTile(username);
if (remoteVideo) {
remoteVideo.srcObject = stream;
}
};
if (localStream) {
const existingKinds = pc.getSenders()
.map(sender => sender.track?.kind)
.filter(Boolean);
for (const track of localStream.getTracks()) {
if (!existingKinds.includes(track.kind)) {
pc.addTrack(track, localStream);
}
}
}
return pc;
}
async function RtcLeaveCall() { // TODO: Just a minimal function so it's not empty.
for (const username of Object.keys(peerConnections)) {
peerConnections[username].close();
removeRemoteTile(username);
}
peerConnections = {};
remoteStreams = {};
candidateQueue = [];
LogMessage("RTC call cleaned up");
}
function removeParticipant(username) {
const pc = peerConnections[username];
if (pc) {
pc.close();
delete peerConnections[username];
}
delete remoteStreams[username];
removeRemoteTile(username);
LogMessage(`Removed participant ${username}`);
}
async function handleRtcSignal(rawJson) {
try {
const msg = typeof rawJson === "string" ? JSON.parse(rawJson) : rawJson;
LogMessage("Received signal: " + msg.type + " from " + msg.from + " in " + msg.channelId);
await ensurePeerConnection();
if (!msg.from || msg.from === currentUsername) return;
if (msg.type === "rtc_join_state") {
if (msg.isInitiator) {
LogMessage("No active call found. Becoming initiator.");
const offer = await peerConnection.createOffer();
await peerConnection.setLocalDescription(offer);
// await waitForIceGatheringComplete(peerConnection);
const payload = {
type: "rtc_offer",
from: currentUsername,
channelId: currentChannelId,
sdp: peerConnection.localDescription.sdp
};
LogMessage("Sending offer to channel " + currentChannelId);
await window.HybridWebView.InvokeDotNet("SendRtcSignal", [JSON.stringify(payload)]);
} else {
LogMessage("Active call exists. Waiting for stored offer.");
}
return;
}
const pc = await ensurePeerConnectionForUser(msg.from);
if (msg.type === "rtc_offer") {
LogMessage("Incoming channel call offer from " + msg.from);
await ensureLocalMedia();
LogMessage(`Answering call with media: audio=${hasAudioTrack()} video=${hasVideoTrack()}`);
LogMessage("Applying remote offer");
await peerConnection.setRemoteDescription({
await pc.setRemoteDescription({
type: "offer",
sdp: msg.sdp
});
const answer = await peerConnection.createAnswer();
await peerConnection.setLocalDescription(answer);
// await waitForIceGatheringComplete(peerConnection);
const answer = await pc.createAnswer();
await pc.setLocalDescription(answer);
const payload = {
type: "rtc_answer",
from: currentUsername,
to: msg.from,
channelId: msg.channelId,
sdp: peerConnection.localDescription.sdp
sdp: answer.sdp
};
LogMessage("Sending answer to channel " + msg.channelId);
await window.HybridWebView.InvokeDotNet("SendRtcSignal", [JSON.stringify(payload)]);
LogMessage(`Sent answer to ${msg.from}`);
return;
}
if (msg.type === "rtc_answer") {
LogMessage("Applying remote answer");
await peerConnection.setRemoteDescription({
await pc.setRemoteDescription({
type: "answer",
sdp: msg.sdp
});
LogMessage("Remote answer applied");
LogMessage(`Remote answer applied for ${msg.from}`);
return;
}
if (msg.type === "rtc_ice_candidate") {
LogMessage("Applying remote ICE candidate");
await peerConnection.addIceCandidate({
await pc.addIceCandidate({
candidate: msg.candidate,
sdpMid: msg.sdpMid,
sdpMLineIndex: msg.sdpMLineIndex
});
LogMessage("Remote ICE candidate applied");
LogMessage(`Remote ICE candidate applied for ${msg.from}`);
return;
}
@@ -445,7 +341,7 @@ async function handleRtcSignal(rawJson) {
} catch (err) {
LogMessage("handleRtcSignal failed: " + err);
}
} //Remove?
}
async function loadDevices() {
try {
@@ -503,7 +399,7 @@ function wireDeviceSelectors() {
cameraSelect.onchange = async () => {
LogMessage("Camera changed");
await ensureLocalMedia(true);
await applyLocalStreamToPeerConnection();
await applyLocalStreamToPeerConnections();
};
}
@@ -511,7 +407,7 @@ function wireDeviceSelectors() {
micSelect.onchange = async () => {
LogMessage("Microphone changed");
await ensureLocalMedia(true);
await applyLocalStreamToPeerConnection();
await applyLocalStreamToPeerConnections();
};
}
}
@@ -531,6 +427,42 @@ async function waitForIceGatheringComplete(pc) {
});
} //Remove?
function ensureRemoteTile(username) {
let tile = document.getElementById(`remote-tile-${username}`);
if (tile) {
return tile.querySelector("video");
}
const container = document.getElementById("remoteMediaContainer");
if (!container) return null;
tile = document.createElement("div");
tile.id = `remote-tile-${username}`;
tile.className = "remote-tile";
const video = document.createElement("video");
video.id = `remote-video-${username}`;
video.autoplay = true;
video.playsInline = true;
const label = document.createElement("div");
label.className = "remote-label";
label.textContent = username;
tile.appendChild(video);
tile.appendChild(label);
container.appendChild(tile);
return video;
}
function removeRemoteTile(username) {
const tile = document.getElementById(`remote-tile-${username}`);
if (tile) {
tile.remove();
}
}
window.handleRtcSignal = handleRtcSignal;
window.addEventListener("HybridWebViewMessageReceived", function (e) {

View File

@@ -111,6 +111,19 @@ public class ServerAPI
var json = await response.Content.ReadAsStringAsync();
return JsonSerializer.Deserialize<RtcDescription>(json);
}
public static async Task<List<string>> GetRtcParticipantsAsync(string? channelId)
{
if (string.IsNullOrWhiteSpace(channelId))
return new List<string>();
HttpResponseMessage response = await client.GetAsync($"api/rtc/participants/{channelId}");
response.EnsureSuccessStatusCode();
var json = await response.Content.ReadAsStringAsync();
return JsonSerializer.Deserialize<List<string>>(json) ?? new List<string>();
}
}
public class RtcDescription

View File

@@ -71,11 +71,10 @@ public static class RtcEndpoints
return Results.Ok(await rtcCallService.GetAnswersAsync(channelId));
});
//app.MapGet("/api/rtc/participants/{channelId}", (string channelId) => // TODO: UNCOMMENT AND ADD
//{
// var participants = RtcChannelPresenceService.GetUsernamesInChannel(channelId);
// return Results.Ok(participants);
//});
app.MapGet("/api/rtc/participants/{channelId}", (string channelId) =>
{
return Results.Ok(RtcChannelPresenceService.GetUsersInChannel(channelId));
});
// Return the latest answer stored for the specified channel.
app.MapGet("/api/rtc/answer/{channelId}", async (string channelId, RtcCallService rtcCallService) =>

View File

@@ -69,9 +69,72 @@ public class ChatSocketBehavior : WebSocketBehavior
return;
}
if (IsEncryptedRtcSignal(msg))
{
HandleEncryptedRtcSignal(msg);
return;
}
HandleEncryptedChatMessage(msg);
}
private static bool IsEncryptedRtcSignal(string msg)
{
try
{
using var doc = JsonDocument.Parse(msg);
var root = doc.RootElement;
if (!root.TryGetProperty("Type", out var typeProp))
return false;
var type = (SignalType)typeProp.GetInt32();
return type == SignalType.EncryptedSignal;
}
catch
{
return false;
}
}
private void HandleEncryptedRtcSignal(string msg)
{
Console.WriteLine("RTC SIGNAL HIT");
SocketRtcSignalMessage? clientPayload;
try
{
clientPayload = JsonSerializer.Deserialize<SocketRtcSignalMessage>(msg);
}
catch
{
Console.WriteLine("Failed to parse encrypted RTC signal payload.");
return;
}
if (clientPayload is null || clientPayload.Type != SignalType.EncryptedSignal)
return;
if (string.IsNullOrWhiteSpace(clientPayload.ChannelId))
{
Console.WriteLine("Encrypted RTC signal missing channel id.");
return;
}
var sessionIds = RtcChannelPresenceService.GetSessionsInChannel(clientPayload.ChannelId);
foreach (var sessionId in sessionIds)
{
if (sessionId == ID)
continue;
Sessions.SendTo(JsonSerializer.Serialize(clientPayload), sessionId);
}
Console.WriteLine($"Forwarded encrypted RTC signal from {clientPayload.SenderUsername} to channel {clientPayload.ChannelId}");
}
/// <summary>
///
/// </summary>

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@@ -36,6 +36,11 @@ public static class RtcChannelPresenceService
.ToList();
}
public static List<string> GetUsernamesInChannel(string channelId)
{
return GetUsersInChannel(channelId).ToList();
}
public static IReadOnlyList<string> GetUsersInChannel(string channelId)
{
var sessionIds = GetSessionsInChannel(channelId);

View File

@@ -1,4 +1,6 @@
using SurrealDb.Net.Models;
using System.Text.Json.Serialization;
using RelayShared.Rtc;
using SurrealDb.Net.Models;
#region Resharper Stuff
// ReSharper disable ClassNeverInstantiated.Global
@@ -26,13 +28,31 @@ public enum SignalType
public sealed class RtcSignalMessage
{
[JsonPropertyName("type")]
public SignalType Type { get; set; }
[JsonPropertyName("from")]
public string From { get; set; } = string.Empty;
[JsonPropertyName("to")]
public string To { get; set; } = string.Empty;
[JsonPropertyName("channelId")]
public string ChannelId { get; set; } = string.Empty;
[JsonPropertyName("sdp")]
public string? Sdp { get; set; }
[JsonPropertyName("candidate")]
public string? Candidate { get; set; }
[JsonPropertyName("sdpMid")]
public string? SdpMid { get; set; }
[JsonPropertyName("sdpMLineIndex")]
public int? SdpMLineIndex { get; set; }
[JsonPropertyName("isInitiator")]
public bool IsInitiator { get; set; }
}