LarpixServer/LarpixServer/Room/Shared.cs
olcxja 2ca092b017
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voice chat [TEST]
2026-08-22 12:36:54 +02:00

731 lines
28 KiB
C#

using System.Numerics;
using System.Text;
using System.Text.Json;
using LarpixServer.Filesystem;
using LarpixServer.Utils.Jsons;
using static LarpixServer.Utils.Utils;
namespace LarpixServer.Room;
public class Shared
{
public static string GetRoomPath(string roomType, string roomId)
{
if (roomType == "groups")
{
return Groups.GetGroupPath(roomId);
}
else if (roomType == "dms")
{
return $"{ROOMS_DIR}/dms/{DOMAIN}/{roomId}";
}
return $"{ROOMS_DIR}/{roomType}/{DOMAIN}/{roomId}";
}
private static bool IsSafeId(string msgId)
{
if (string.IsNullOrEmpty(msgId)) return false;
if (msgId.Contains("..") || msgId.Contains("/") || msgId.Contains("\\"))
{
return false;
}
return true;
}
public static async Task<bool> IsMemberOfRoom(string id, string roomType, string roomId)
{
if (!IsSafeId(roomId)) return false;
string memberPath = $"{GetRoomPath(roomType, roomId)}/members/{id};{DOMAIN}";
return Fs.Exists(memberPath);
}
public static async Task<string> GetUserRole(string id, string roomType, string roomId, string targetUserId)
{
if (!await IsMemberOfRoom(id, roomType, roomId)) return "error:forbidden";
string targetMemberPath = $"{GetRoomPath(roomType, roomId)}/members/{targetUserId}";
if (!Fs.Exists(targetMemberPath)) return "error:not.a.member";
if (roomType == "dms")
{
return "member";
}
else if (roomType == "groups")
{
string ownerPath = $"{Groups.GetGroupPath(roomId)}/owner";
if (Fs.Exists(ownerPath))
{
string owner = Encoding.UTF8.GetString(await Fs.ReadFile(ownerPath));
if (owner == targetUserId)
{
return "group owner";
}
}
return "member";
}
else if (roomType == "spaces")
{
// Placeholder for spaces where custom roles will be implemented
string ownerPath = $"{ROOMS_DIR}/{roomType}/{DOMAIN}/{roomId}/owner";
if (Fs.Exists(ownerPath))
{
string owner = Encoding.UTF8.GetString(await Fs.ReadFile(ownerPath));
if (owner == targetUserId)
{
return "Owner";
}
}
return "member";
}
return "member";
}
public static async Task<string> GetMessages(string id, string roomType, string roomId, string startOffset, string countStr)
{
if (!await IsMemberOfRoom(id, roomType, roomId)) return "error:forbidden";
string msgDir = $"{GetRoomPath(roomType, roomId)}/messages";
if (!Fs.Exists(msgDir)) return "{}";
long last = 0;
if (Fs.Exists($"{msgDir}/last"))
{
string lastStr = Encoding.UTF8.GetString(await Fs.ReadFile($"{msgDir}/last"));
long.TryParse(lastStr, out last);
}
long start = last;
if (!string.IsNullOrEmpty(startOffset) && long.TryParse(startOffset, out long s))
{
start = s;
}
int count = 50;
if (!string.IsNullOrEmpty(countStr) && int.TryParse(countStr, out int c))
{
count = Math.Min(c, 100);
}
StringBuilder sb = new StringBuilder("{");
int fetched = 0;
for (long i = start; i >= 0 && fetched < count; i--)
{
string p = $"{msgDir}/{i}";
if (Fs.Exists(p))
{
if (fetched > 0) sb.Append(',');
sb.Append($"\"{i}\":");
string msgJson = Encoding.UTF8.GetString(await Fs.ReadFile(p));
Message msgObj = JsonSerializer.Deserialize(msgJson, AppJsonSerializerContext.Default.Message);
string reactDir = $"{GetRoomPath(roomType, roomId)}/reactions/{i}";
if (Fs.Exists(reactDir))
{
StringBuilder rxSb = new StringBuilder("[");
string[] reactFiles = Fs.ReadDirectory(reactDir);
int rxCount = 0;
foreach(string rf in reactFiles)
{
string rId = System.IO.Path.GetFileName(rf);
if (rId == "last") continue;
string content = Encoding.UTF8.GetString(await Fs.ReadFile($"{reactDir}/{rId}"));
int nLineIdx = content.IndexOf('\n');
if (nLineIdx != -1)
{
string u = content.Substring(0, nLineIdx).Trim();
string r = content.Substring(nLineIdx + 1).Trim();
if (rxCount > 0) rxSb.Append(',');
rxSb.Append($"{{\"id\":\"{rId}\",\"u\":\"{u}\",\"r\":\"{r}\"}}");
rxCount++;
}
}
rxSb.Append("]");
msgObj.reactions = rxCount > 0 ? rxSb.ToString() : "";
}
else
{
msgObj.reactions = "";
}
if (Fs.Exists($"{GetRoomPath(roomType, roomId)}/pinned/{i}"))
{
msgObj.pinned = "true";
}
sb.Append(JsonSerializer.Serialize(msgObj, AppJsonSerializerContext.Default.Message));
fetched++;
}
}
sb.Append("}");
return sb.ToString();
}
public static async Task<string> MessageSend(string id, string roomType, string roomId, string content, string attachment, string responded, string keyIndex = "0")
{
string msgDir = $"{GetRoomPath(roomType, roomId)}/messages";
long nextId = 0;
Message msg = new Message();
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(roomId);
await roomLock.WaitAsync();
try
{
if (!await IsMemberOfRoom(id, roomType, roomId)) return "error:forbidden";
if (roomType == "groups")
{
string newRequiredPath = $"{Groups.GetGroupPath(roomId)}/keys/newrequired";
if (Fs.Exists(newRequiredPath))
{
string isRequired = Encoding.UTF8.GetString(await Fs.ReadFile(newRequiredPath));
if (isRequired == "true")
{
return "error:key.rotation.required";
}
}
// Check if keyIndex matches last key
string lastKeyPath = $"{Groups.GetGroupPath(roomId)}/keys/last";
if (Fs.Exists(lastKeyPath))
{
string lastKey = Encoding.UTF8.GetString(await Fs.ReadFile(lastKeyPath));
if (keyIndex != lastKey && keyIndex != "") // empty key means larp.info messages
{
return "error:invalid.key.index";
}
}
}
if (content != null && content.Length > LarpixServer.Utils.Utils.MAX_MESSAGE_SIZE)
{
string sizeStr = LarpixServer.Utils.Utils.MAX_MESSAGE_SIZE >= 1024 ? $"{LarpixServer.Utils.Utils.MAX_MESSAGE_SIZE / 1024.0:0.##} KB" : $"{LarpixServer.Utils.Utils.MAX_MESSAGE_SIZE} B";
return $"error:message.too.long:{sizeStr}";
}
long last = 0;
if (Fs.Exists($"{msgDir}/last"))
{
last = long.Parse(Encoding.UTF8.GetString(await Fs.ReadFile($"{msgDir}/last")));
}
nextId = last + 1;
msg.author = id;
msg.timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds().ToString();
msg.type = "larp.text";
msg.content = content;
msg.attachment = attachment;
msg.key = keyIndex;
msg.pervious = "";
msg.responded = responded ?? "";
msg.reactions = "";
if (!string.IsNullOrEmpty(msg.attachment) && msg.attachment != "[]")
{
try
{
var attachmentsNode = System.Text.Json.Nodes.JsonNode.Parse(msg.attachment);
if (attachmentsNode is System.Text.Json.Nodes.JsonArray arr)
{
string attDir = $"{GetRoomPath(roomType, roomId)}/attachments/{nextId}";
if (!Fs.Exists(attDir)) Fs.CreateDirectory(attDir);
for (int i = 0; i < arr.Count; i++)
{
var attObj = arr[i] as System.Text.Json.Nodes.JsonObject;
if (attObj != null && attObj.ContainsKey("staging_id"))
{
string stagingId = attObj["staging_id"].ToString();
string stagingPath = $"{ROOMS_DIR}/dms_staging/{stagingId}";
if (Fs.Exists(stagingPath))
{
string attId = attObj["id"].ToString();
string destPath = $"{attDir}/{attId}";
Fs.MoveFile(stagingPath, destPath);
}
attObj.Remove("staging_id");
}
}
msg.attachment = attachmentsNode.ToJsonString();
}
}
catch (Exception ex)
{
Console.WriteLine($"Error processing attachments: {ex}");
}
}
await Fs.WriteFile($"{msgDir}/{nextId}", Encoding.UTF8.GetBytes(JsonSerializer.Serialize(msg, AppJsonSerializerContext.Default.Message)));
await Fs.WriteFile($"{msgDir}/last", Encoding.UTF8.GetBytes(nextId.ToString()));
}
finally
{
roomLock.Release();
}
string[] members = Fs.ReadDirectory($"{GetRoomPath(roomType, roomId)}/members");
foreach(string memberWD in members)
{
bool isLocal = Account.Utils.IsUserLocal(memberWD, out string domain);
string memberId = Account.Utils.GetValidIdOrZero(memberWD);
if (isLocal)
{
if (memberId == id)
{
if (roomType == "dms") await Account.Utils.UpdateUserDm(memberId, roomId, "true", msg.timestamp);
if (roomType == "groups") await Room.Groups.UpdateUserGroup(memberId, roomId, "true", msg.timestamp);
await Utils.Utils.SendWsMessage(memberId, $"{GetRoomEventPrefix(roomType)}_message:{roomId}:read");
}
else
{
_ = Task.Run(async () =>
{
SemaphoreSlim userLock = Account.Utils.GetUserLock(memberId);
await userLock.WaitAsync();
try
{
if (roomType == "dms") await Account.Utils.UpdateUserDm(memberId, roomId, "false", msg.timestamp);
if (roomType == "groups") await Room.Groups.UpdateUserGroup(memberId, roomId, "false", msg.timestamp);
}
finally
{
userLock.Release();
}
await Utils.Utils.SendWsMessage(memberId, $"{GetRoomEventPrefix(roomType)}_message:{roomId}:unread");
});
}
}
}
return $"success:{nextId}";
}
public static async Task<string> MessageDelete(string id, string roomType, string roomId, string msgId)
{
if (!IsSafeId(msgId)) return "error:invalid.msg.id";
if (!await IsMemberOfRoom(id, roomType, roomId)) return "error:forbidden";
string msgPath = $"{GetRoomPath(roomType, roomId)}/messages/{msgId}";
if (!Fs.Exists(msgPath)) return "error:message.not.found";
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(roomId);
await roomLock.WaitAsync();
try
{
Message msg = JsonSerializer.Deserialize(
Encoding.UTF8.GetString(await Fs.ReadFile(msgPath)),
AppJsonSerializerContext.Default.Message
);
if (msg.author != id)
{
if (roomType == "groups")
{
string role = await GetUserRole(id, roomType, roomId, id);
if (role != "group owner") return "error:forbidden";
}
else
{
return "error:forbidden";
}
}
if (msg.type == "larp.redacted") return "error:message.already.deleted";
msg.type = "larp.redacted";
msg.reactions = "";
msg.content = "{blah(larp.redacted)}";
msg.attachment = "";
msg.key = "";
await Fs.WriteFile(msgPath, Encoding.UTF8.GetBytes(JsonSerializer.Serialize(msg, AppJsonSerializerContext.Default.Message)));
string reactDir = $"{GetRoomPath(roomType, roomId)}/reactions/{msgId}";
if (Fs.Exists(reactDir))
{
Fs.DeleteDirectory(reactDir);
}
string attDir = $"{GetRoomPath(roomType, roomId)}/attachments/{msgId}";
if (Fs.Exists(attDir))
{
Fs.DeleteDirectory(attDir);
}
}
finally
{
roomLock.Release();
}
string[] members = Fs.ReadDirectory($"{GetRoomPath(roomType, roomId)}/members");
foreach(string memberWD in members)
{
bool isLocal = Account.Utils.IsUserLocal(memberWD, out string domain);
string memberId = Account.Utils.GetValidIdOrZero(memberWD);
if (isLocal)
{
await Utils.Utils.SendWsMessage(memberId, $"{GetRoomEventPrefix(roomType)}_message:{roomId}:update");
}
}
return "success:message.deleted";
}
public static async Task<string> MessageReactAdd(string id, string roomType, string roomId, string msgId, string reaction)
{
if (!IsSafeId(msgId)) return "error:invalid.msg.id";
if (!await IsMemberOfRoom(id, roomType, roomId)) return "error:forbidden";
if (reaction != null && reaction.Length > LarpixServer.Utils.Utils.MAX_REACTION_SIZE)
{
string sizeStr = LarpixServer.Utils.Utils.MAX_REACTION_SIZE >= 1024 ? $"{LarpixServer.Utils.Utils.MAX_REACTION_SIZE / 1024.0:0.##} KB" : $"{LarpixServer.Utils.Utils.MAX_REACTION_SIZE} B";
return $"error:reaction.too.long:{sizeStr}";
}
string msgPath = $"{GetRoomPath(roomType, roomId)}/messages/{msgId}";
if (!Fs.Exists(msgPath)) return "error:message.not.found";
Message msg = JsonSerializer.Deserialize(
Encoding.UTF8.GetString(await Fs.ReadFile(msgPath)),
AppJsonSerializerContext.Default.Message
);
if (msg.type == "larp.redacted") return "error:message.already.deleted";
string reactDir = $"{GetRoomPath(roomType, roomId)}/reactions/{msgId}";
if (!Fs.Exists(reactDir)) Fs.CreateDirectory(reactDir);
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(roomId);
await roomLock.WaitAsync();
try
{
long last = 0;
if (Fs.Exists($"{reactDir}/last"))
{
last = long.Parse(Encoding.UTF8.GetString(await Fs.ReadFile($"{reactDir}/last")));
}
long nextId = last + 1;
await Fs.WriteFile($"{reactDir}/{nextId}", Encoding.UTF8.GetBytes($"{id}\n{reaction}"));
await Fs.WriteFile($"{reactDir}/last", Encoding.UTF8.GetBytes(nextId.ToString()));
}
finally
{
roomLock.Release();
}
string[] members = Fs.ReadDirectory($"{GetRoomPath(roomType, roomId)}/members");
foreach(string memberWD in members)
{
bool isLocal = Account.Utils.IsUserLocal(memberWD, out string domain);
string memberId = Account.Utils.GetValidIdOrZero(memberWD);
if (isLocal)
{
await Utils.Utils.SendWsMessage(memberId, $"{GetRoomEventPrefix(roomType)}_message:{roomId}:update");
}
}
return "success:message.reacted";
}
public static async Task<string> MessageReactRemove(string id, string roomType, string roomId, string msgId, string reactionId)
{
if (!IsSafeId(msgId)) return "error:invalid.msg.id";
if (!IsSafeId(reactionId)) return "error:invalid.reaction.id";
if (!await IsMemberOfRoom(id, roomType, roomId)) return "error:forbidden";
string reactPath = $"{GetRoomPath(roomType, roomId)}/reactions/{msgId}/{reactionId}";
if (!Fs.Exists(reactPath)) return "error:reaction.not.found";
string content = Encoding.UTF8.GetString(await Fs.ReadFile(reactPath));
int nLineIdx = content.IndexOf('\n');
if (nLineIdx != -1)
{
string u = content.Substring(0, nLineIdx).Trim();
if (u != id) return "error:forbidden";
}
Fs.DeleteFile(reactPath);
string[] members = Fs.ReadDirectory($"{GetRoomPath(roomType, roomId)}/members");
foreach(string memberWD in members)
{
bool isLocal = Account.Utils.IsUserLocal(memberWD, out string domain);
string memberId = Account.Utils.GetValidIdOrZero(memberWD);
if (isLocal)
{
await Utils.Utils.SendWsMessage(memberId, $"{GetRoomEventPrefix(roomType)}_message:{roomId}:update");
}
}
return "success:message.reaction.removed";
}
public static async Task<string> MessagePinToggle(string id, string roomType, string roomId, string msgId)
{
if (!IsSafeId(msgId)) return "error:invalid.msg.id";
if (!await IsMemberOfRoom(id, roomType, roomId)) return "error:forbidden";
string msgPath = $"{GetRoomPath(roomType, roomId)}/messages/{msgId}";
if (!Fs.Exists(msgPath)) return "error:message.not.found";
string pinnedDir = $"{GetRoomPath(roomType, roomId)}/pinned";
if (!System.IO.Directory.Exists(pinnedDir))
{
System.IO.Directory.CreateDirectory(pinnedDir);
}
string pinnedFilePath = $"{pinnedDir}/{msgId}";
bool isNowPinned = false;
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(roomId);
await roomLock.WaitAsync();
try
{
if (Fs.Exists(pinnedFilePath))
{
Fs.DeleteFile(pinnedFilePath);
isNowPinned = false;
}
else
{
await Fs.WriteFile(pinnedFilePath, new byte[0]);
isNowPinned = true;
}
long nextId = 0;
if (Fs.Exists($"{GetRoomPath(roomType, roomId)}/messages/last"))
{
string lastStr = Encoding.UTF8.GetString(await Fs.ReadFile($"{GetRoomPath(roomType, roomId)}/messages/last"));
if (long.TryParse(lastStr, out long last))
{
nextId = last + 1;
}
}
Message infoMessage = new();
infoMessage.attachment = "";
infoMessage.author = id;
infoMessage.timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds().ToString();
infoMessage.type = isNowPinned ? "larp.info.pin" : "larp.info.unpin";
infoMessage.content = isNowPinned ? "{blah(message.pinned.by)}" : "{blah(message.unpinned.by)}";
infoMessage.key = "";
infoMessage.pervious = msgId;
string mPath = $"{GetRoomPath(roomType, roomId)}/messages/{nextId}";
await Fs.WriteFile(mPath, Encoding.UTF8.GetBytes(JsonSerializer.Serialize(infoMessage, AppJsonSerializerContext.Default.Message)));
await Fs.WriteFile($"{GetRoomPath(roomType, roomId)}/messages/last", Encoding.UTF8.GetBytes(nextId.ToString()));
}
finally
{
roomLock.Release();
}
string[] members = Fs.ReadDirectory($"{GetRoomPath(roomType, roomId)}/members");
foreach(string memberWD in members)
{
bool isLocal = Account.Utils.IsUserLocal(memberWD, out string domain);
string memberId = Account.Utils.GetValidIdOrZero(memberWD);
if (isLocal)
{
await Utils.Utils.SendWsMessage(memberId, $"{GetRoomEventPrefix(roomType)}_message:{roomId}:update");
}
}
return "success:message.pin.toggled";
}
public static async Task<string> MessageGetPinned(string id, string roomType, string roomId)
{
if (!await IsMemberOfRoom(id, roomType, roomId)) return "error:forbidden";
string pinnedDir = $"{GetRoomPath(roomType, roomId)}/pinned";
if (!System.IO.Directory.Exists(pinnedDir)) return "{}";
string[] pinnedFiles = Fs.ReadDirectory(pinnedDir);
StringBuilder sb = new StringBuilder("{");
int fetched = 0;
foreach (string pFile in pinnedFiles)
{
string msgId = System.IO.Path.GetFileName(pFile);
string msgPath = $"{GetRoomPath(roomType, roomId)}/messages/{msgId}";
if (Fs.Exists(msgPath))
{
if (fetched > 0) sb.Append(',');
sb.Append($"\"{msgId}\":");
string msgJson = Encoding.UTF8.GetString(await Fs.ReadFile(msgPath));
Message msgObj = JsonSerializer.Deserialize(msgJson, AppJsonSerializerContext.Default.Message);
string reactDir = $"{GetRoomPath(roomType, roomId)}/reactions/{msgId}";
if (Fs.Exists(reactDir))
{
StringBuilder rxSb = new StringBuilder("[");
string[] reactFiles = Fs.ReadDirectory(reactDir);
int rxCount = 0;
foreach(string rf in reactFiles)
{
string rId = System.IO.Path.GetFileName(rf);
if (rId == "last") continue;
string content = Encoding.UTF8.GetString(await Fs.ReadFile($"{reactDir}/{rId}"));
int nLineIdx = content.IndexOf('\n');
if (nLineIdx != -1)
{
string u = content.Substring(0, nLineIdx).Trim();
string r = content.Substring(nLineIdx + 1).Trim();
if (rxCount > 0) rxSb.Append(',');
rxSb.Append($"{{\"id\":\"{rId}\",\"u\":\"{u}\",\"r\":\"{r}\"}}");
rxCount++;
}
}
rxSb.Append("]");
msgObj.reactions = rxCount > 0 ? rxSb.ToString() : "";
}
else
{
msgObj.reactions = "";
}
msgObj.pinned = "true";
sb.Append(JsonSerializer.Serialize(msgObj, AppJsonSerializerContext.Default.Message));
fetched++;
}
}
sb.Append("}");
return sb.ToString();
}
private static string GetRoomEventPrefix(string roomType)
{
if (roomType == "dms") return "dm";
if (roomType == "groups") return "group";
return "room";
}
public static async Task<string> VoiceJoin(string id, string body)
{
Universal2String serializedBody = JsonSerializer.Deserialize(
body,
AppJsonSerializerContext.Default.Universal2String
);
string roomType = serializedBody.string1;
string roomId = serializedBody.string2;
if (!await IsMemberOfRoom(id, roomType, roomId)) return "error:forbidden";
var callList = ActiveCalls.GetOrAdd(roomId, _ => new List<string>());
lock (callList)
{
if (!callList.Contains(id))
{
callList.Add(id);
}
}
string callState;
lock (callList) { callState = JsonSerializer.Serialize(callList, AppJsonSerializerContext.Default.ListString); }
string bestIp = "";
long bestLoad = long.MaxValue;
foreach (var ip in VOICE_IPS)
{
try
{
using var client = new System.Net.Http.HttpClient();
client.Timeout = TimeSpan.FromSeconds(2);
string url = ip.StartsWith("http") ? ip : $"http://{ip}";
string loadStr = await client.GetStringAsync($"{url}/load");
if (long.TryParse(loadStr, out long load))
{
if (load < bestLoad)
{
bestLoad = load;
bestIp = ip;
}
}
}
catch {}
}
if (string.IsNullOrEmpty(bestIp))
{
if (VOICE_IPS.Count > 0) bestIp = VOICE_IPS.First();
else return "error:no.voice.servers";
}
string[] members = Fs.ReadDirectory($"{GetRoomPath(roomType, roomId)}/members");
foreach(string memberWD in members)
{
if (Account.Utils.IsUserLocal(memberWD, out string _))
{
string memberId = Account.Utils.GetValidIdOrZero(memberWD);
_ = Utils.Utils.SendWsMessage(memberId, $"call_update:{roomId}:{callState}");
}
}
return $"success:{bestIp}";
}
public static async Task<string> VoiceLeave(string id, string body)
{
Universal2String serializedBody = JsonSerializer.Deserialize(
body,
AppJsonSerializerContext.Default.Universal2String
);
string roomType = serializedBody.string1;
string roomId = serializedBody.string2;
if (ActiveCalls.TryGetValue(roomId, out var callList))
{
bool removed = false;
lock (callList)
{
if (callList.Contains(id))
{
callList.Remove(id);
removed = true;
}
}
if (removed)
{
string callState;
lock (callList) { callState = JsonSerializer.Serialize(callList, AppJsonSerializerContext.Default.ListString); }
string[] members = Fs.ReadDirectory($"{GetRoomPath(roomType, roomId)}/members");
foreach(string memberWD in members)
{
if (Account.Utils.IsUserLocal(memberWD, out string _))
{
string memberId = Account.Utils.GetValidIdOrZero(memberWD);
_ = Utils.Utils.SendWsMessage(memberId, $"call_update:{roomId}:{callState}");
}
}
}
}
return "success";
}
public static async Task<string> RoomSignal(string id, string body)
{
Universal3String serializedBody = JsonSerializer.Deserialize(
body,
AppJsonSerializerContext.Default.Universal3String
);
string roomType = serializedBody.string1;
string roomId = serializedBody.string2;
string signalPayload = serializedBody.string3;
if (!await IsMemberOfRoom(id, roomType, roomId)) return "error:forbidden";
string[] members = Fs.ReadDirectory($"{GetRoomPath(roomType, roomId)}/members");
foreach(string memberWD in members)
{
if (Account.Utils.IsUserLocal(memberWD, out string _))
{
string memberId = Account.Utils.GetValidIdOrZero(memberWD);
_ = Utils.Utils.SendWsMessage(memberId, $"signal:{roomId}:{signalPayload}");
}
}
return "success";
}
}