| public abstract CloseAsync ( System closeStatus, string statusDescription, System cancellationToken ) : System.Threading.Tasks.Task | ||
| closeStatus | System | |
| statusDescription | string | |
| cancellationToken | System | |
| return | System.Threading.Tasks.Task | |
public async Task ProcessWebSocket(HttpContext context, WebSocket webSocket)
{
var connection = new Connection(context, webSocket);
Console.WriteLine("Connect: {0}", context.Connection.RemoteIpAddress);
var cancelToken = CancellationToken.None;
var buffer = new byte[1024];
WebSocketReceiveResult received =
await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), cancelToken);
while (!webSocket.CloseStatus.HasValue)
{
string text = System.Text.Encoding.UTF8.GetString(buffer, 0, received.Count);
Console.WriteLine("Recd: {0}", text);
try
{
Cmd.Parse(text, connection)?.Run();
}
catch (Exception ex)
{
Console.WriteLine("Unhandled exception: {0}", ex);
}
received = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), cancelToken);
}
await webSocket.CloseAsync(webSocket.CloseStatus.Value, webSocket.CloseStatusDescription, cancelToken);
}
public override async Task CloseAsync()
{
if (IsConnected)
{
State = ChannelState.ClosedReceived;
}
if (socket != null)
{
try
{
await socket.CloseAsync(WebSocketCloseStatus.NormalClosure, "Normal", CancellationToken.None);
socket.Dispose();
socket = null;
}
catch (Exception ex)
{
Console.WriteLine($"Fault closing Web socket server socket - {ex.Message}");
}
}
OnClose?.Invoke(this, new ChannelCloseEventArgs(Id));
await Task.CompletedTask;
}
private async Task HandleSocket(WebSocket socket)
{
var receiveBuffer = new byte[1024 * 4];
try
{
var result = await socket.ReceiveAsync(new ArraySegment<byte>(receiveBuffer), CancellationToken.None);
while (!socket.CloseStatus.HasValue)
{
await Task.WhenAll(tasks: SocketsSingleton.Instance.SocketsBag.Where(x => x.State == WebSocketState.Open)
.Select(async x =>
{
await x.SendAsync(new ArraySegment<byte>(receiveBuffer, 0, result.Count), result.MessageType, result.EndOfMessage, CancellationToken.None);
}));
SocketsSingleton.Instance.SocketsBag = new ConcurrentBag<WebSocket>(SocketsSingleton.Instance.SocketsBag.Where(x => x.State == WebSocketState.Open));
result = await socket.ReceiveAsync(new ArraySegment<byte>(receiveBuffer), CancellationToken.None);
}
await socket.CloseAsync(result.CloseStatus ?? WebSocketCloseStatus.EndpointUnavailable, result.CloseStatusDescription, CancellationToken.None);
}
catch (Exception exception)
{
Console.Write(exception);
}
finally
{
socket?.Dispose();
}
}
/// <summary>
/// 群发
/// </summary>
/// <param name="socketContext"></param>
/// <returns></returns>
public async Task ProcessChat(AspNetWebSocketContext socketContext)
{
// SuperSocket:Session
// 表示客户端发起请求的一个链接
System.Net.WebSockets.WebSocket socket = socketContext.WebSocket;
CancellationToken token = new CancellationToken();
string socketGuid = Guid.NewGuid().ToString();
OldChatManager.AddUser(socketGuid, UserName, socket, token);
await OldChatManager.SengdMessage(token, UserName, "进入聊天室");
while (socket.State == WebSocketState.Open)
{
ArraySegment <byte> buffer = new ArraySegment <byte>(new byte[2048]);
WebSocketReceiveResult result = await socket.ReceiveAsync(buffer, token);
string userMessage = Encoding.UTF8.GetString(buffer.Array, 0, result.Count); // 来自于客户端发送过来的消息内容
if (result.MessageType == WebSocketMessageType.Close)
{
OldChatManager.RemoveUser(socketGuid);
await OldChatManager.SengdMessage(token, UserName, "离开聊天室");
await socket.CloseAsync(WebSocketCloseStatus.NormalClosure, string.Empty, token);
}
else
{
await OldChatManager.SengdMessage(token, UserName, userMessage);
}
}
}
/// <summary>
/// Closes the transport, implementing the websocket close handshake.
/// </summary>
/// <param name="cancellationToken"></param>
/// <returns></returns>
/// <exception cref="InvalidOperationException">The listener is not active</exception>
protected override async Task PerformCloseAsync(CancellationToken cancellationToken)
{
await _closeSemaphore.WaitAsync(cancellationToken);
try
{
// Awaits for the client to send the close connection frame.
// If the session was clearly closed, the client should received the finished envelope and is closing the connection.
using (var cts = new CancellationTokenSource(CloseTimeout))
using (var linkedCts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, cts.Token))
{
if (WebSocket.State == WebSocketState.Open ||
WebSocket.State == WebSocketState.CloseReceived)
{
await
WebSocket.CloseAsync(CloseStatus, CloseStatusDescription, linkedCts.Token)
.ConfigureAwait(false);
}
}
if (!_receiveCts.IsCancellationRequested)
{
_receiveCts.Cancel();
}
}
finally
{
_closeSemaphore.Release();
}
}
public static async Task ExecuteAPI(HttpContext context, System.Net.WebSockets.WebSocket webSocket)
{
var buffer = new byte[1024 * 20];
WebSocketReceiveResult result = await webSocket.ReceiveAsync(new ArraySegment <byte>(buffer), CancellationToken.None);
while (!result.CloseStatus.HasValue)
{
string strRequest = Encoding.UTF8.GetString(buffer);
string str = strRequest.Replace("\0", string.Empty);
string jsonStr = string.Empty;
try
{
//Method
APIModel apiModel = JsonSerializer.Deserialize <APIModel>(str);
string apiName = apiModel.Method;
BaseCommand command = Activator.CreateInstance(CommandsDict[apiName]) as BaseCommand;
command.WebSocket = webSocket;
jsonStr = command.Execute(str);
buffer = Encoding.UTF8.GetBytes(jsonStr);
BaseRequestModel requestModel = JsonSerializer.Deserialize <BaseRequestModel>(str);
if (!string.IsNullOrEmpty(requestModel.Token))
{
if (command is UserLogoutCommand)
{
//do nothing
}
else
{
UserInfo userInfo = UserInfoDict[requestModel.Token];
userInfo.ActionTime = DateTime.Now;
}
}
else if (command is UserLoginCommand)
{
//do nothing
}
}
catch (Exception ex)
{
ErrorResponseModel responseModel = new ErrorResponseModel();
responseModel.StatusCode = 0;
responseModel.ErrorCode = "500";
responseModel.Message = ex.Message;
jsonStr = JsonSerializer.Serialize(responseModel);
buffer = Encoding.UTF8.GetBytes(jsonStr);
}
await webSocket.SendAsync(new ArraySegment <byte>(buffer, 0, jsonStr.Length), result.MessageType, result.EndOfMessage, CancellationToken.None);
buffer = new byte[1024 * 20];
result = await webSocket.ReceiveAsync(new ArraySegment <byte>(buffer), CancellationToken.None);
}
await webSocket.CloseAsync(result.CloseStatus.Value, result.CloseStatusDescription, CancellationToken.None);
}
internal async Task RunAsync()
{
await _logger.InfoAsync($"Connected");
var token = _cancelToken.Token;
try
{
var segment = new ArraySegment <byte>(_inBuffer);
//Send HELLO
await SendAsync(GatewayOpCode.Hello, new HelloEvent { HeartbeatInterval = 15000 }).ConfigureAwait(false);
while (_socket.State == WebSocketState.Open)
{
var result = await _socket.ReceiveAsync(segment, token).ConfigureAwait(false);
if (result.MessageType == WebSocketMessageType.Close)
{
await _logger.WarningAsync($"Received Close {result.CloseStatus} ({result.CloseStatusDescription ?? "No Reason"})").ConfigureAwait(false);
}
else
{
await _logger.InfoAsync($"Received {result.Count} bytes");
}
}
}
catch (OperationCanceledException)
{
try { await _socket.CloseAsync(WebSocketCloseStatus.NormalClosure, "", CancellationToken.None).ConfigureAwait(false); }
catch { }
}
catch (Exception ex)
{
try { await _socket.CloseAsync(WebSocketCloseStatus.InternalServerError, ex.Message, CancellationToken.None).ConfigureAwait(false); }
catch { }
}
finally
{
await _logger.InfoAsync($"Disconnected");
}
}
private async Task Echo(WebSocket webSocket)
{
byte[] buffer = new byte[1024 * 4];
var result = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), CancellationToken.None);
while (!result.CloseStatus.HasValue)
{
await webSocket.SendAsync(new ArraySegment<byte>(buffer, 0, result.Count), result.MessageType, result.EndOfMessage, CancellationToken.None);
result = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), CancellationToken.None);
}
await webSocket.CloseAsync(result.CloseStatus.Value, result.CloseStatusDescription, CancellationToken.None);
}
/// <summary>
/// Close the connection.
/// </summary>
public async void Close()
{
// Close the connection.
if (_webSocket != null)
{
try
{
// Close the connection.
await _webSocket.CloseAsync(WebSocketCloseStatus.NormalClosure, string.Empty, CancellationToken.None);
}
catch (Exception ex) { _lastError = ex; }
}
}
protected override async void OnClose(CancellationToken ct)
{
try
{
await _webSocket.CloseAsync(WebSocketCloseStatus.NormalClosure, "Session Ended", ct);
}
catch { }
try
{
await _webSocket.CloseOutputAsync(WebSocketCloseStatus.NormalClosure, "Session Ended", ct);
}
catch { }
}
private static async Task Echo(HttpContext context, System.Net.WebSockets.WebSocket webSocket)
{
var buffer = new byte[1024 * 4];
WebSocketReceiveResult result = await webSocket.ReceiveAsync(new ArraySegment <byte>(buffer), CancellationToken.None);
while (!result.CloseStatus.HasValue)
{
await webSocket.SendAsync(new ArraySegment <byte>(buffer, 0, result.Count), result.MessageType, result.EndOfMessage, CancellationToken.None);
result = await webSocket.ReceiveAsync(new ArraySegment <byte>(buffer), CancellationToken.None);
}
await webSocket.CloseAsync(result.CloseStatus.Value, result.CloseStatusDescription, CancellationToken.None);
}
private async Task EchoWebSocket(WebSocket webSocket)
{
byte[] buffer = new byte[1024];
WebSocketReceiveResult received = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), CancellationToken.None);
while (!webSocket.CloseStatus.HasValue)
{
// Echo anything we receive
await webSocket.SendAsync(new ArraySegment<byte>(buffer, 0, received.Count), received.MessageType, received.EndOfMessage, CancellationToken.None);
received = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), CancellationToken.None);
}
await webSocket.CloseAsync(webSocket.CloseStatus.Value, webSocket.CloseStatusDescription, CancellationToken.None);
}
private static async Task DoWebSocketReceiveSendAsync(WebSocket receiver, WebSocket sender, CancellationToken ct) {
if (receiver == null || sender == null) {
return;
}
ArraySegment<byte> receiveBuffer = new ArraySegment<byte>(new byte[65335]);
while (receiver.State == WebSocketState.Open && sender.State == WebSocketState.Open) {
if (ct.IsCancellationRequested) {
receiver.CloseAsync(WebSocketCloseStatus.NormalClosure, "Normal closure", CancellationToken.None).SilenceException<WebSocketException>().DoNotWait();
sender.CloseAsync(WebSocketCloseStatus.NormalClosure, "Normal closure", CancellationToken.None).SilenceException<WebSocketException>().DoNotWait();
return;
}
WebSocketReceiveResult result = await receiver.ReceiveAsync(receiveBuffer, ct);
byte[] data = await receiveBuffer.ToByteArrayAsync(result.Count);
ArraySegment<byte> sendBuffer = new ArraySegment<byte>(data);
await sender.SendAsync(sendBuffer, result.MessageType, result.EndOfMessage, ct);
if (result.MessageType == WebSocketMessageType.Close) {
await receiver.CloseAsync(WebSocketCloseStatus.NormalClosure, "Normal closure", ct);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="webSocket"></param>
/// <returns></returns>
public async Task ConnectClientAsync(System.Net.WebSockets.WebSocket webSocket)
{
var buffer = new byte[1024 * 4];
WebSocketReceiveResult result = await webSocket.ReceiveAsync(new ArraySegment <byte>(buffer), CancellationToken.None);
while (!result.CloseStatus.HasValue)
{
string content = Encoding.UTF8.GetString(buffer);
await webSocket.SendAsync(new ArraySegment <byte>(buffer, 0, result.Count), result.MessageType, result.EndOfMessage, CancellationToken.None);
result = await webSocket.ReceiveAsync(new ArraySegment <byte>(buffer), CancellationToken.None);
}
await webSocket.CloseAsync(result.CloseStatus.Value, result.CloseStatusDescription, CancellationToken.None);
}
private async Task DoPull(WebSocket socket, CancellationToken cancellationToken)
{
try
{
var buf = new Byte[4 * 1024];
while (!cancellationToken.IsCancellationRequested && socket.State == WebSocketState.Open)
{
var data = await socket.ReceiveAsync(new ArraySegment <Byte>(buf), cancellationToken);
var cmd = buf.ToStr(null, 0, data.Count).ToJsonEntity <CommandModel>();
if (cmd != null)
{
XTrace.WriteLine("Got Command: {0}", cmd.ToJson());
if (cmd.Expire.Year < 2000 || cmd.Expire > DateTime.Now)
{
switch (cmd.Command)
{
case "Deploy":
// 发布中心通知有应用需要部署，马上执行一次心跳，拉取最新应用信息
_ = Task.Run(Ping);
break;
default:
var rs = CommandQueue.Publish(cmd.Command, cmd);
if (rs != null)
{
await ReportAsync(cmd.Id, rs);
}
break;
}
}
}
}
}
catch (Exception ex)
{
XTrace.WriteException(ex);
}
if (socket.State == WebSocketState.Open)
{
await socket.CloseAsync(WebSocketCloseStatus.NormalClosure, "finish", default);
}
}
private async Task HandleWebSocket(WebSocketContext wsContext)
{
var socketId = Guid.NewGuid().ToString();
System.Net.WebSockets.WebSocket webSocket = wsContext.WebSocket;
try
{
_sockets.TryAdd(socketId, webSocket);
byte[] receiveBuffer = new byte[1024 * 4];
while (webSocket.State == WebSocketState.Open)
{
//var msg = Encoding.UTF8.GetBytes(WebSocketSerivce.GetNewOrders());
//await webSocket.SendAsync(new ArraySegment<byte>(msg, 0, msg.Length), WebSocketMessageType.Text,
// true, CancellationToken.None);
WebSocketReceiveResult receiveResult =
await webSocket.ReceiveAsync(new ArraySegment <byte>(receiveBuffer), CancellationToken.None);
if (receiveResult.MessageType == WebSocketMessageType.Close)
{
await webSocket.CloseAsync(WebSocketCloseStatus.NormalClosure, "", CancellationToken.None);
_sockets.TryRemove(socketId, out System.Net.WebSockets.WebSocket removedSocket);
}
else
{
foreach (var socket in _sockets.Where(x => x.Key != socketId).Select(x => x.Value))
{
await socket.SendAsync(new ArraySegment <byte>(receiveBuffer, 0, receiveResult.Count),
WebSocketMessageType.Text, receiveResult.EndOfMessage, CancellationToken.None);
}
}
}
}
catch (Exception e)
{
Console.WriteLine("Exception: {0}", e);
}
finally
{
webSocket?.Dispose();
}
}
async Task websocketHandle(System.Net.WebSockets.WebSocket socket, HttpRequest request)
{
var bs = new byte[204800];
while (true)
{
if (socket.State == System.Net.WebSockets.WebSocketState.Open)
{
try
{
ArraySegment <byte> buffer = new ArraySegment <byte>(bs);
WebSocketReceiveResult result = await socket.ReceiveAsync(buffer, CancellationToken.None);
if (result.Count == 0)
{
//客户端要求关闭
socket.CloseAsync(WebSocketCloseStatus.NormalClosure, null, CancellationToken.None).Wait();
continue;
}
StringBuilder str = new StringBuilder();
foreach (var item in request.Headers)
{
foreach (var v in item.Value)
{
str.Append($"{item.Key}={v}\r\n");
}
}
byte[] sendbackBs = System.Text.Encoding.UTF8.GetBytes(str.ToString());
buffer = new ArraySegment <byte>(sendbackBs);
await socket.SendAsync(buffer, WebSocketMessageType.Text, true, CancellationToken.None);
}
catch
{
}
}
else
{
break;
}
}
}
private static async Task ListenToClients(HttpContext context, System.Net.WebSockets.WebSocket socket)
{
var buffer = new byte[6 * 1024];
WebSocketReceiveResult result = await socket.ReceiveAsync(new ArraySegment <byte>(buffer), CancellationToken.None);
while (!result.CloseStatus.HasValue)
{
var content = Encoding.UTF8.GetString(buffer).Substring(0, result.Count);
try
{
CallServerMethod(content);
}
catch { }
result = await socket.ReceiveAsync(new ArraySegment <byte>(buffer), CancellationToken.None);
}
await socket.CloseAsync(result.CloseStatus.Value, result.CloseStatusDescription, CancellationToken.None);
}
private void InternalReceive()
{
Task.Run(async() =>
{
byte[] _buffer = new byte[WebSocketProtocol.BUFFER_SIZE];
while (Connected && !connectionManager.Token.IsCancellationRequested)
{
ArraySegment <byte> buffer = new ArraySegment <byte>(_buffer);
var received = await socket.ReceiveAsync(buffer, connectionManager.Token);
if (received.MessageType != WebSocketMessageType.Close)
{
byte[] result = new byte[received.Count];
Array.ConstrainedCopy(buffer.Array, 0, result, 0, received.Count);
receivedPackages.Enqueue(result);
}
else
{
await socket.CloseAsync(WebSocketCloseStatus.NormalClosure, "close", connectionManager.Token);
}
}
});
}
public async Task ProcessWebSocket(HttpContext context, WebSocket webSocket)
{
var connection = new Connection(context, webSocket);
_allConnections.Add(connection);
Console.WriteLine("Connect: {0}", context.Connection.RemoteIpAddress);
var cancelToken = CancellationToken.None;
var buffer = new byte[1024];
WebSocketReceiveResult received =
await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), cancelToken);
while (!webSocket.CloseStatus.HasValue)
{
string text = System.Text.Encoding.UTF8.GetString(buffer, 0, received.Count);
Console.WriteLine("Recd: {0}", text);
try
{
var cmd = Cmd.Parse(text, connection);
if (cmd != null) {
// TODO: Remove these dependencies from Cmd
cmd.SpawnDaemon = _spawnDaemon;
cmd.DecayDaemon = _decayDaemon;
cmd.Run();
}
}
catch (Exception ex)
{
Console.WriteLine("Unhandled exception: {0}", ex);
}
received = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), cancelToken);
}
_allConnections.Remove(connection);
await webSocket.CloseAsync(webSocket.CloseStatus.Value, webSocket.CloseStatusDescription, cancelToken);
}
public void RemoveSocket(string connectionGUID, System.Net.WebSockets.WebSocket socket)
{
lock (_socketsList)
{
HashSet <System.Net.WebSockets.WebSocket> sockets;
if (!_socketsList.TryGetValue(connectionGUID, out sockets))
{
return;
}
lock (sockets)
{
sockets.Remove(socket);
if (sockets.Count == 0)
{
_socketsList.Remove(connectionGUID);
}
}
}
socket.CloseAsync(closeStatus: WebSocketCloseStatus.NormalClosure,
statusDescription: "Closed by the WebSocketManager",
cancellationToken: CancellationToken.None);
}
private static async Task HandleMessage(System.Net.WebSockets.WebSocket webSocket)
{
//Gets the current WebSocket object.
/*We define a certain constant which will represent
* size of received data. It is established by us and
* we can set any value. We know that in this case the size of the sent
* data is very small.
*/
const int maxMessageSize = 1024;
//Buffer for received bits.
var receivedDataBuffer = new ArraySegment <Byte>(new Byte[maxMessageSize]);
var cancellationToken = new CancellationToken();
WebSocketHelper webSocketHandler = new WebSocketHelper(webSocket, /*webSocketContext, */ cancellationToken);
var messageHandler = WebSocketConfig.WebSocketMessageHandlerFunc.Invoke();
while (webSocket.State == WebSocketState.Open)
{
//var incoming = await this._socket.ReceiveAsync(seg, CancellationToken.None);
//var outgoing = new ArraySegment<byte>(buffer, 0, incoming.Count);
//await this._socket.SendAsync(outgoing, WebSocketMessageType.Text, true, CancellationToken.None);
//Reads data.
WebSocketReceiveResult webSocketReceiveResult =
await webSocket.ReceiveAsync(receivedDataBuffer, cancellationToken).ConfigureAwait(false);
//If input frame is cancelation frame, send close command.
if (webSocketReceiveResult.MessageType == WebSocketMessageType.Close)
{
if (WebSocketConfig.WebSocketMessageHandlerFunc != null)
{
await messageHandler.OnDisConnected(webSocketHandler).ConfigureAwait(false);//调用MessageHandler
}
await webSocket.CloseAsync(WebSocketCloseStatus.NormalClosure,
String.Empty, cancellationToken).ConfigureAwait(false);
}
else
{
byte[] payloadData = receivedDataBuffer.Array
.Where(b => b != 0)
.Take(webSocketReceiveResult.Count)
.ToArray();
if (WebSocketConfig.WebSocketMessageHandlerFunc != null)
{
//Because we know that is a string, we convert it.
string receiveString =
//System.Text.Encoding.UTF8.GetString(payloadData, 0, payloadData.Length);
System.Text.Encoding.UTF8.GetString(payloadData, 0, payloadData.Length);
try
{
ReceivedMessage receivedMessage;
try
{
receivedMessage = new ReceivedMessage()
{
Message = receiveString// + " | 系统错误：" + e.Message
};
#if NET45
JavaScriptSerializer js = new JavaScriptSerializer();
receivedMessage = js.Deserialize <ReceivedMessage>(receiveString);
#else
receivedMessage = Newtonsoft.Json.JsonConvert.DeserializeObject <ReceivedMessage>(receiveString);
#endif
}
catch (Exception e)
{
receivedMessage = new ReceivedMessage()
{
Message = receiveString// + " | 系统错误：" + e.Message
};
}
await messageHandler.OnMessageReceiced(webSocketHandler, receivedMessage, receiveString).ConfigureAwait(false);//调用MessageHandler
}
catch (Exception ex)
{
}
}
}
}
}
public static async Task CloseAsync(this WebSocket client, WebSocketCloseStatus state)
{
await client.CloseAsync(state, "", CancellationToken.None);
}
/// <summary>
/// Awaitable task that reads incoming messages from the WebSocket.
/// This is a blocking method
/// </summary>
/// <returns></returns>
public async Task <ConnectionResult> ReadLoopAsync(CancellationToken ct)
{
while (!ct.IsCancellationRequested && !_disconnecting)
{
if (_ws.State != WebSocketState.Open)
{
TraceEvent(
"(ReadLoopAsync) Invalid attempt to read a closed socket",
EventIdentifiers.WS_ERR_READ_SOCK_CLOSE_ASYNC,
TraceEventType.Error
);
throw new InvalidOperationException("Websocket is not open");
}
if (ct.IsCancellationRequested)
{
TraceEvent(
"(ReadLoopAsync) Operation cancelled",
EventIdentifiers.WS_WAR_CANC_READ,
TraceEventType.Warning
);
ct.ThrowIfCancellationRequested();
}
await _sem.WaitAsync(ct);
WebSocketReceiveResult res;
ArraySegment <byte> buf = new ArraySegment <byte>(new byte[1024]);
res = await _ws.ReceiveAsync(buf, ct);
_sem.Release();
//We don't know how long the receive task has waited, so check for cancellation again
if (ct.IsCancellationRequested)
{
TraceEvent(
"(ReadLoopAsync) Operation cancelled",
EventIdentifiers.WS_WAR_CANC_READ_ASYNC,
TraceEventType.Warning
);
ct.ThrowIfCancellationRequested();
}
if (res.MessageType == WebSocketMessageType.Close)
{
_disconnecting = true;
TraceEvent(
$"(ReadLoopAsync) Close request: [{res.CloseStatus}] {res.CloseStatusDescription}",
EventIdentifiers.WS_INF_CONN_CLOSE_REQ,
TraceEventType.Information
);
await _ws.CloseAsync(WebSocketCloseStatus.NormalClosure, "Close request acknowledged", ct);
TraceEvent(
"(ReadLoopAsync) Socket disconnected",
EventIdentifiers.WS_INF_CONN_CLOSE,
TraceEventType.Information
);
return(ConnectionResult.Disconnecting);
}
if (!res.EndOfMessage)
{
_rQ.Enqueue(buf.Take(res.Count));
continue;
}
List <byte> msg = new List <byte>();
while (!_rQ.IsEmpty)
{
_rQ.TryDequeue(out IEnumerable <byte> result);
msg.AddRange(result);
}
msg.AddRange(buf.Take(res.Count));
TraceEvent(
$"(ReadLoopAsync) Received bytes [ len: {res.Count} ]",
EventIdentifiers.WS_VER_RBYTES_ASYNC,
TraceEventType.Verbose
);
if (res.MessageType == WebSocketMessageType.Binary)
{
OnBinaryMessage?.Invoke(this, new BinaryMessageEventArgs(msg.ToArray()));
}
else
{
string strMsg = Encoding.UTF8.GetString(msg.ToArray());
OnTextMessage?.Invoke(this, new StringMessageEventArgs(strMsg));
}
}
if (ct.IsCancellationRequested)
{
TraceEvent(
"(ReadLoopAsync) Operation cancelled",
EventIdentifiers.WS_WAR_CANC_READ_ASYNC,
TraceEventType.Warning
);
ct.ThrowIfCancellationRequested();
}
TraceEvent(
"(ReadLoopAsync) Socket disconnecting",
EventIdentifiers.WS_INF_CONN_CLOSE,
TraceEventType.Information
);
return(ConnectionResult.Disconnecting);
}
/// <summary>
/// 部分Handler过程参考：http://www.cnblogs.com/lookbs/p/MVC-IMG.html
/// </summary>
/// <param name="webSocketContext"></param>
/// <returns></returns>
public static async Task WebSocketRequestHandler(AspNetWebSocketContext webSocketContext)
{
//Gets the current WebSocket object.
System.Net.WebSockets.WebSocket webSocket = webSocketContext.WebSocket;
/*We define a certain constant which will represent
* size of received data. It is established by us and
* we can set any value. We know that in this case the size of the sent
* data is very small.
*/
const int maxMessageSize = 1024;
//Buffer for received bits.
var receivedDataBuffer = new ArraySegment <Byte>(new Byte[maxMessageSize]);
var cancellationToken = new CancellationToken();
WebSocketHelper webSocketHandler = new WebSocketHelper(webSocketContext, cancellationToken);
var messageHandler = WebSocketConfig.WebSocketMessageHandlerFunc.Invoke();
if (webSocket.State == WebSocketState.Connecting)
{
if (WebSocketConfig.WebSocketMessageHandlerFunc != null)
{
await messageHandler.OnConnecting(webSocketHandler);//调用MessageHandler
}
}
//Checks WebSocket state.
while (webSocket.State == WebSocketState.Open)
{
//Reads data.
WebSocketReceiveResult webSocketReceiveResult =
await webSocket.ReceiveAsync(receivedDataBuffer, cancellationToken);
//If input frame is cancelation frame, send close command.
if (webSocketReceiveResult.MessageType == WebSocketMessageType.Close)
{
if (WebSocketConfig.WebSocketMessageHandlerFunc != null)
{
await messageHandler.OnDisConnected(webSocketHandler);//调用MessageHandler
}
await webSocket.CloseAsync(WebSocketCloseStatus.NormalClosure,
String.Empty, cancellationToken);
}
else
{
byte[] payloadData = receivedDataBuffer.Array
.Where(b => b != 0)
.Take(webSocketReceiveResult.Count)
.ToArray();
if (WebSocketConfig.WebSocketMessageHandlerFunc != null)
{
//Because we know that is a string, we convert it.
string receiveString =
System.Text.Encoding.UTF8.GetString(payloadData, 0, payloadData.Length);
try
{
ReceivedMessage receivedMessage;
try
{
receivedMessage = new ReceivedMessage()
{
Message = receiveString// + " | 系统错误：" + e.Message
};
receivedMessage = Newtonsoft.Json.JsonConvert.DeserializeObject <ReceivedMessage>(receiveString);
}
catch (Exception e)
{
receivedMessage = new ReceivedMessage()
{
Message = receiveString// + " | 系统错误：" + e.Message
};
}
await messageHandler.OnMessageReceiced(webSocketHandler, receivedMessage, receiveString);//调用MessageHandler
}
catch (Exception ex)
{
}
}
}
}
}
public override async Task CloseAsync(WebSocketCloseStatus closeStatus, string statusDescription, CancellationToken cancellationToken)
{
await _webSocket.CloseAsync(closeStatus, statusDescription, cancellationToken);
}
public Task Close(WebSocketCloseStatus closeStatus, string closeDescription, CancellationToken cancelToken)
{
return(mWebSocket.CloseAsync(closeStatus, closeDescription, cancelToken));
}
public override Task CloseAsync(WebSocketCloseStatus closeStatus, string statusDescription,
CancellationToken cancellationToken)
{
ThrowIfNotConnected();
return(innerWebSocket.CloseAsync(closeStatus, statusDescription, cancellationToken));
}
private async Task RunWebSocket(IDictionary<string, object> websocketContext)
{
// Try to get the websocket context from the environment
object value;
if (!websocketContext.TryGetValue(typeof(WebSocketContext).FullName, out value))
{
throw new InvalidOperationException("Unable to find web socket context");
}
mWebSocket = ((WebSocketContext)value).WebSocket;
OnOpen();
var buffer = new byte[MaxMessageSize];
do
{
var received = await ReceiveOneMessage(buffer);
if (received.Item1.Count > 0)
OnMessageReceived(received.Item1, received.Item2);
}
while (!mWebSocket.CloseStatus.HasValue);
await mWebSocket.CloseAsync(mWebSocket.CloseStatus.GetValueOrDefault(WebSocketCloseStatus.Empty),
mWebSocket.CloseStatusDescription, mCancellToken.Token);
mCancellToken.Cancel();
OnClose();
}
public Task CloseAsync(WebSocketCloseStatus closeStatus, string statusDescription, CancellationToken cancellationToken) => _webSocket.CloseAsync(closeStatus, statusDescription, cancellationToken);
private async Task<String> ReadSerializedMessage(WebSocket socket)
{
var byteBuffer = new byte[MaxBufferSize];
var arraySegmentBuffer = new ArraySegment<byte>(byteBuffer);
WebSocketReceiveResult result = await socket.ReceiveAsync(arraySegmentBuffer, CancellationToken.None);
string ret = "";
if (result.MessageType == WebSocketMessageType.Close)
{
await
socket.CloseAsync(result.CloseStatus.GetValueOrDefault(), result.CloseStatusDescription,
CancellationToken.None);
}
else
{
int messageSize = 0;
for (messageSize = result.Count; !result.EndOfMessage; messageSize += result.Count)
{
result = await socket.ReceiveAsync(new ArraySegment<byte>(byteBuffer, messageSize, MaxBufferSize - messageSize), CancellationToken.None);
}
if (result.MessageType == WebSocketMessageType.Text)
{
ret = Encoding.UTF8.GetString(byteBuffer, 0, messageSize);
}
}
return ret;
}
internal async Task ProcessWebSocketRequestAsync(WebSocket webSocket, CancellationToken disconnectToken, Func<object, Task<WebSocketMessage>> messageRetriever, object state)
{
bool closedReceived = false;
try
{
// first, set primitives and initialize the object
WebSocket = webSocket;
OnOpen();
// dispatch incoming messages
while (!disconnectToken.IsCancellationRequested && !closedReceived)
{
WebSocketMessage incomingMessage = await messageRetriever(state);
switch (incomingMessage.MessageType)
{
case WebSocketMessageType.Binary:
OnMessage((byte[])incomingMessage.Data);
break;
case WebSocketMessageType.Text:
OnMessage((string)incomingMessage.Data);
break;
default:
closedReceived = true;
// If we received an incoming CLOSE message, we'll queue a CLOSE frame to be sent.
// We'll give the queued frame some amount of time to go out on the wire, and if a
// timeout occurs we'll give up and abort the connection.
await Task.WhenAny(CloseAsync(), Task.Delay(_closeTimeout));
break;
}
}
}
catch (OperationCanceledException ex)
{
// ex.CancellationToken never has the token that was actually cancelled
if (!disconnectToken.IsCancellationRequested)
{
Error = ex;
OnError();
}
}
catch (ObjectDisposedException)
{
// If the websocket was disposed while we were reading then noop
}
catch (Exception ex)
{
if (IsFatalException(ex))
{
Error = ex;
OnError();
}
}
try
{
if (WebSocket.State == WebSocketState.Closed ||
WebSocket.State == WebSocketState.Aborted)
{
// No-op if the socket is already closed or aborted
}
else
{
// Close the socket
await WebSocket.CloseAsync(WebSocketCloseStatus.NormalClosure, "", CancellationToken.None);
}
}
finally
{
OnClose();
}
}
private static async Task Echo(System.Net.WebSockets.WebSocket webSocket)
{
WebSocketReceiveResult wResult;
{
byte[] buffer = new byte[size];
do
{
try
{
wResult = await webSocket.ReceiveAsync(new ArraySegment <byte>(buffer), CancellationToken.None);
var str = getStrFromByte(ref buffer);
if (str == "allMap")
{
Dictionary <string, bool> Cs = new Dictionary <string, bool>();
List <object> listOfCrosses = new List <object>();
Dictionary <string, Dictionary <int, OssModel.SaveRoad.RoadInfo> > result;
Program.dt.GetData(out result);
List <double[]> meshPoints = new List <double[]>();
// List<int> colors = new List<int>();
foreach (var item in result)
{
foreach (var itemj in item.Value)
{
var value = itemj.Value;
var ps = getRoadRectangle(value, item.Value);
meshPoints.Add(ps);
for (var i = 0; i < value.Cross1.Length; i++)
{
var cross = value.Cross1[i];
var key = cross.RoadCode1.CompareTo(cross.RoadCode2) > 0 ?
$"{cross.RoadCode1}_{cross.RoadOrder1}_{cross.RoadCode2}_{cross.RoadOrder2}" :
$"{cross.RoadCode2}_{cross.RoadOrder2}_{cross.RoadCode1}_{cross.RoadOrder1}";
if (Cs.ContainsKey(key))
{
}
else
{
Cs.Add(key, false);
listOfCrosses.Add(new { lon = cross.BDLongitude, lat = cross.BDLatitude, state = cross.CrossState });
}
}
//value.Cross1
}
}
{
var msg = Newtonsoft.Json.JsonConvert.SerializeObject(new { reqMsg = str, t = "road", obj = meshPoints });
var sendData = Encoding.UTF8.GetBytes(msg);
await webSocket.SendAsync(new ArraySegment <byte>(sendData, 0, sendData.Length), wResult.MessageType, true, CancellationToken.None);
}
{
var msg = Newtonsoft.Json.JsonConvert.SerializeObject(new { reqMsg = str, t = "cross", obj = listOfCrosses });
var sendData = Encoding.UTF8.GetBytes(msg);
await webSocket.SendAsync(new ArraySegment <byte>(sendData, 0, sendData.Length), wResult.MessageType, true, CancellationToken.None);
}
//foreach (var item in result)
//{
// foreach (var itemj in item.Value)
// {
// var value = itemj.Value;
// var ps = getCrossPoints(value, result);
// meshPoints.Add(ps);
// }
//}
}
}
catch
{
// Console.WriteLine($"step2：webSockets数量：{ BufferImage.webSockets.Count}");
return;
}
}while (!wResult.CloseStatus.HasValue);
try
{
await webSocket.CloseAsync(wResult.CloseStatus.Value, wResult.CloseStatusDescription, CancellationToken.None);
}
catch
{
return;
}
};
}
