/// <summary>
/// 接收客户端数据.websocket 从ClientList类里拿。
/// </summary>
/// <param name="webSocket">webSocket 对象</param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
public async Task <string> ReceiveDataAsyncNew(WebSocket webSocket, CancellationToken cancellationToken)
{
WebSocketReceiveResult result;
MessageModel msg = null;
if (webSocket.State != WebSocketState.Open)
{
return("");
}
while (!webSocket.CloseStatus.HasValue)
{
ArraySegment <byte> buffer = new ArraySegment <byte>(new byte[1024 * 2]);
result = await webSocket.ReceiveAsync(buffer, cancellationToken);
if (result.MessageType == WebSocketMessageType.Close)
{
break;
}
if (result.Count > 0)
{
msg = JsonConvert.DeserializeObject <MessageModel>(Encoding.Default.GetString(buffer));
if (msg == null)
{
break;
}
#region 所有数据发送出去
//using MemoryStream ms = new MemoryStream();//新语法。
//ms.Write(buffer.Array, buffer.Offset, result.Count - buffer.Offset);
//ms.Seek(0, SeekOrigin.Begin);
//var reader = new StreamReader(ms);
//var message = reader.ReadToEnd();
//reader.Dispose();
#endregion
//这个只是发送了部分数据出去。
byte[] newbuf = Encoding.UTF8.GetBytes(msg.Data.ToString());//过度下，按实际大小返回给客户端。
var segment = new ArraySegment <byte>(newbuf);
ClientList.AddDicUser(msg.RoomId, webSocket);
List <Task> tasks = new List <Task>();
switch (msg.SendType)
{
//Broadcast all user.
case Model.SendType.Broadcast:
if (ClientList.userdic.ContainsKey(msg.RoomId))
{
ClientList.userdic[msg.RoomId].ForEach(ws =>
{
tasks.Add(ws.SendAsync(segment, result.MessageType, result.EndOfMessage, CancellationToken.None));
});
Task.WaitAll(tasks.ToArray());
}
break;
//one to one.
case Model.SendType.Unicast:
if (ClientList.userdic.ContainsKey(msg.RoomId) &&
ClientList.userdic[msg.RoomId].Count > 0)
{
WebSocket siglews = ClientList.userdic[msg.RoomId].Where(ws => ws == webSocket).FirstOrDefault();
tasks.Add(siglews.SendAsync(segment, result.MessageType, result.EndOfMessage, CancellationToken.None));
Task.WaitAll(tasks.ToArray());
}
break;
}
}
}
if (msg != null && ClientList.userdic.ContainsKey(msg.RoomId))
{
WebSocket socketmodel = ClientList.userdic[msg.RoomId].Where(ws => ws == webSocket).FirstOrDefault();
//移除聊天室中的某个成员
ClientList.RemoveDicUser(msg.RoomId, socketmodel);
//关闭当前异常连接。
await socketmodel.CloseAsync(webSocket.CloseStatus.Value, webSocket.CloseStatusDescription, CancellationToken.None);
}
return("");
}
/// <summary>
/// 接收客户端数据.websocket 从ClientList类里拿。
/// </summary>
/// <param name="webSocket">webSocket 对象</param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
public async Task <string> ReceiveDataAsyncDataTableNew(WebSocket webSocket, CancellationToken cancellationToken, MysqlDBContext mysqlcontext)
{
WebSocketReceiveResult result;
MessageModel msg = null;
if (webSocket.State != WebSocketState.Open)
{
return("");
}
while (!webSocket.CloseStatus.HasValue)
{
ArraySegment <byte> buffer = new ArraySegment <byte>(new byte[1024 * 2]);
result = await webSocket.ReceiveAsync(buffer, cancellationToken);
if (result.MessageType == WebSocketMessageType.Close)
{
break;
}
ArraySegment <byte> segment = null;
if (result.Count > 0)
{
try
{
msg = JsonConvert.DeserializeObject <MessageModel>(Encoding.Default.GetString(buffer));
if (msg == null)
{
break;
}
//这个只是发送了部分数据出去。
byte[] newbuf = Encoding.UTF8.GetBytes(msg.Data.ToString());//过度下，按实际大小返回给客户端。
segment = new ArraySegment <byte>(newbuf);
ClientList.AddDicUser(msg.RoomId + msg.SenderId, webSocket);
MessageModel message = new MessageModel();
//message.Id = 2;//id
message.RoomId = msg.RoomId;
message.SenderId = msg.SenderId;
message.TargetId = msg.TargetId;
message.Data = msg.Data;
mysqlcontext.Add(message);
mysqlcontext.SaveChanges();
}
catch (Exception ex)
{
_logger.LogError(ex.Message);
}
List <Task> tasks = new List <Task>();
switch (msg.SendType)
{
//Broadcast all user.
case Model.SendType.Broadcast:
if (ClientList.userdic.ContainsKey(msg.RoomId))
{
ClientList.userdic[msg.RoomId].ForEach(ws =>
{
tasks.Add(ws.SendAsync(segment, result.MessageType, result.EndOfMessage, CancellationToken.None));
});
Task.WaitAll(tasks.ToArray());
}
else if (ClientList.userdic.ContainsKey(msg.RoomId + msg.SenderId))
{ //added by longdb 2020.6.17 Get offline information。
List <MessageModel> mmodel2 = mysqlcontext.Set <MessageModel>().Where(p => p.SenderId == msg.SenderId).ToList();
ClientList.userdic[msg.RoomId + msg.SenderId].ForEach(ws =>
{
tasks.Add(ws.SendAsync(segment, result.MessageType, result.EndOfMessage, CancellationToken.None));
});
Task.WaitAll(tasks.ToArray());
}
break;
//one to one.
case Model.SendType.Unicast:
if (ClientList.userdic.ContainsKey(msg.RoomId) &&
ClientList.userdic[msg.RoomId].Count > 0)
{
WebSocket siglews = ClientList.userdic[msg.RoomId].Where(ws => ws == webSocket).FirstOrDefault();
tasks.Add(siglews.SendAsync(segment, result.MessageType, result.EndOfMessage, CancellationToken.None));
Task.WaitAll(tasks.ToArray());
}
break;
}
}
}
if (msg != null && ClientList.userdic.ContainsKey(msg.RoomId))
{
WebSocket socketmodel = ClientList.userdic[msg.RoomId].Where(ws => ws == webSocket).FirstOrDefault();
//移除聊天室中的某个成员
ClientList.RemoveDicUser(msg.RoomId, socketmodel);
//关闭当前异常连接。
await socketmodel.CloseAsync(webSocket.CloseStatus.Value, webSocket.CloseStatusDescription, CancellationToken.None);
}
return("");
}
