本文整理汇总了C#中System.Net.WebSockets.WebSocket.ReceiveAsync方法的典型用法代码示例。如果您正苦于以下问题：C# WebSocket.ReceiveAsync方法的具体用法？C# WebSocket.ReceiveAsync怎么用？C# WebSocket.ReceiveAsync使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Net.WebSockets.WebSocket的用法示例。
在下文中一共展示了WebSocket.ReceiveAsync方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: ProcessWebSocket
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);
}示例2: HandleSocket
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();
}
}示例3: ReadMessageAsync
public static async Task<WebSocketMessage> ReadMessageAsync(WebSocket webSocket, byte[] buffer, int maxMessageSize)
{
ArraySegment<byte> arraySegment = new ArraySegment<byte>(buffer);
WebSocketReceiveResult receiveResult = await webSocket.ReceiveAsync(arraySegment, CancellationToken.None).ConfigureAwait(continueOnCapturedContext: false);
// special-case close messages since they might not have the EOF flag set
if (receiveResult.MessageType == WebSocketMessageType.Close)
{
return new WebSocketMessage(null, WebSocketMessageType.Close);
}
if (receiveResult.EndOfMessage)
{
// we anticipate that single-fragment messages will be common, so we optimize for them
switch (receiveResult.MessageType)
{
case WebSocketMessageType.Binary:
return new WebSocketMessage(BufferSliceToByteArray(buffer, receiveResult.Count), WebSocketMessageType.Binary);
case WebSocketMessageType.Text:
return new WebSocketMessage(BufferSliceToString(buffer, receiveResult.Count), WebSocketMessageType.Text);
default:
throw new Exception("This code path should never be hit.");
}
}
else
{
// for multi-fragment messages, we need to coalesce
ByteBuffer bytebuffer = new ByteBuffer(maxMessageSize);
bytebuffer.Append(BufferSliceToByteArray(buffer, receiveResult.Count));
WebSocketMessageType originalMessageType = receiveResult.MessageType;
while (true)
{
// loop until an error occurs or we see EOF
receiveResult = await webSocket.ReceiveAsync(arraySegment, CancellationToken.None).ConfigureAwait(continueOnCapturedContext: false);
if (receiveResult.MessageType != originalMessageType)
{
throw new InvalidOperationException("Incorrect message type");
}
bytebuffer.Append(BufferSliceToByteArray(buffer, receiveResult.Count));
if (receiveResult.EndOfMessage)
{
switch (receiveResult.MessageType)
{
case WebSocketMessageType.Binary:
return new WebSocketMessage(bytebuffer.GetByteArray(), WebSocketMessageType.Binary);
case WebSocketMessageType.Text:
return new WebSocketMessage(bytebuffer.GetString(), WebSocketMessageType.Text);
default:
throw new Exception("This code path should never be hit.");
}
}
}
}
}示例4: ReceiveAsync
static async Task<Message> ReceiveAsync(WebSocket ws)
{
byte[] buffer = new byte[4096];
var seg = new ArraySegment<byte>(buffer);
var result = await ws.ReceiveAsync(seg, CancellationToken.None);
return Message.Deserialize(new ArraySegment<byte>(buffer, 0, result.Count));
}示例5: Echo
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);
}示例6: EchoWebSocket
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);
}示例7: EchoAsync
public async Task EchoAsync(WebSocket webSocket)
{
var buffer = new ArraySegment<byte>(new byte[8192]);
for (; ;)
{
var result = await webSocket.ReceiveAsync(
buffer,
CancellationToken.None);
if (result.MessageType == WebSocketMessageType.Close)
{
return;
}
else if (result.MessageType == WebSocketMessageType.Text)
{
Console.WriteLine("{0}", System.Text.Encoding.UTF8.GetString(buffer.Array, 0, result.Count));
}
await webSocket.SendAsync(
new ArraySegment<byte>(buffer.Array, 0, result.Count),
result.MessageType,
result.EndOfMessage,
CancellationToken.None);
}
}示例8: keyboardHandler
private void keyboardHandler(WebSocket ws)
{
byte[] buffer = new byte[4096 * 4096];
var task = ws.ReceiveAsync(new ArraySegment<byte>(buffer), System.Threading.CancellationToken.None).ContinueWith((ReceiveResult) =>
{
string s = System.Text.Encoding.ASCII.GetString(buffer);
s = s.TrimEnd('\0', ' ');
foreach (string keyboardCmd in s.Split(' ', '\0'))
{
string cmd = keyboardCmd.ToLower().Trim();
if (keyboardCmd.StartsWith("up/") && keyboardCmd.Length > "up/".Length)
{
Keyboard.KeyUp(int.Parse(keyboardCmd.Substring("up/".Length), System.Globalization.NumberStyles.AllowHexSpecifier));
}
if (keyboardCmd.StartsWith("down/") && keyboardCmd.Length > "down/".Length)
{
Keyboard.KeyDown(int.Parse(keyboardCmd.Substring("down/".Length), System.Globalization.NumberStyles.AllowHexSpecifier));
}
if (keyboardCmd.StartsWith("tap/") && keyboardCmd.Length > "tap/".Length)
{
Keyboard.KeyTap(int.Parse(keyboardCmd.Substring("tap/".Length), System.Globalization.NumberStyles.AllowHexSpecifier));
}
}
keyboardHandler(ws);
});
}示例9: WebSocketHost
private WebSocketHost(WebSocket webSocket)
{
_webSocket = webSocket;
_buffer = new byte[1024];
// Start listening for incoming messages
_webSocket.ReceiveAsync(new ArraySegment<byte>(_buffer), CancellationToken.None).ContinueWith(ReceiveMessage);
}示例10: ProcessWebSocket
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);
}示例11: KeepAlive
private async Task KeepAlive(WebSocket connection)
{
while (connection.State == WebSocketState.Open)
{
var token = CancellationToken.None;
var buffer = new ArraySegment<byte>(new byte[4096]);
var received = await connection.ReceiveAsync(buffer, token);
switch (received.MessageType)
{
case WebSocketMessageType.Text:
var request = Encoding.UTF8.GetString(buffer.Array, buffer.Offset, buffer.Count);
SocketMessage receive = JsonConvert.DeserializeObject<SocketMessage>(request);
await Map.Receive(receive);
break;
}
}
}示例12: WebSocketToPipeWorker
private static async Task WebSocketToPipeWorker(WebSocket socket, IMessagePipeEnd pipe, CancellationToken cancellationToken) {
const int blockSize = 0x10000;
var buffer = new MemoryStream(blockSize);
while (true) {
cancellationToken.ThrowIfCancellationRequested();
int index = (int)buffer.Length;
buffer.SetLength(index + blockSize);
var wsrr = await socket.ReceiveAsync(new ArraySegment<byte>(buffer.GetBuffer(), index, blockSize), cancellationToken);
buffer.SetLength(index + wsrr.Count);
if (wsrr.CloseStatus != null) {
break;
} else if (wsrr.EndOfMessage) {
pipe.Write(buffer.ToArray());
buffer.SetLength(0);
}
}
}示例13: DoWebSocketReceiveSendAsync
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);
}
}
}示例14: ReadMessageAsync
public static async Task<WebSocketMessage> ReadMessageAsync(WebSocket webSocket, int bufferSize, int? maxMessageSize, CancellationToken disconnectToken)
{
WebSocketMessage message;
// Read the first time with an empty array
WebSocketReceiveResult receiveResult = await webSocket.ReceiveAsync(_emptyArraySegment, disconnectToken).PreserveCultureNotContext();
if (TryGetMessage(receiveResult, null, out message))
{
return message;
}
var buffer = new byte[bufferSize];
// Now read with the real buffer
var arraySegment = new ArraySegment<byte>(buffer);
receiveResult = await webSocket.ReceiveAsync(arraySegment, disconnectToken).PreserveCultureNotContext();
if (TryGetMessage(receiveResult, buffer, out message))
{
return message;
}
else
{
// for multi-fragment messages, we need to coalesce
ByteBuffer bytebuffer = new ByteBuffer(maxMessageSize);
bytebuffer.Append(BufferSliceToByteArray(buffer, receiveResult.Count));
WebSocketMessageType originalMessageType = receiveResult.MessageType;
while (true)
{
// loop until an error occurs or we see EOF
receiveResult = await webSocket.ReceiveAsync(arraySegment, disconnectToken).PreserveCultureNotContext();
if (receiveResult.MessageType == WebSocketMessageType.Close)
{
return WebSocketMessage.CloseMessage;
}
if (receiveResult.MessageType != originalMessageType)
{
throw new InvalidOperationException("Incorrect message type");
}
bytebuffer.Append(BufferSliceToByteArray(buffer, receiveResult.Count));
if (receiveResult.EndOfMessage)
{
switch (receiveResult.MessageType)
{
case WebSocketMessageType.Binary:
return new WebSocketMessage(bytebuffer.GetByteArray(), WebSocketMessageType.Binary);
case WebSocketMessageType.Text:
return new WebSocketMessage(bytebuffer.GetString(), WebSocketMessageType.Text);
default:
throw new InvalidOperationException("Unknown message type");
}
}
}
}
}开发者ID:FabianGosebrink，项目名称:ASPNET-Core-Angular2-SignalR-Typescript，代码行数:64，代码来源:WebSocketMessageReader.cs
示例15: CheckHeaders
// Web sockets start off as minimal HTTP connections, upgrade, and then behave like TCP sockets for the most part.
// Thus the 'security service' abstraction is used to insulate this listener from direct TCP objects dependence.
// Somewhat of a cheat, but it is the way it is :-)!
private async Task CheckHeaders(WebSocket socket) {
byte[] buffer = new byte[Config.Get(Constants.Configuration.MaxPayloadLength)];
var response = await socket.ReceiveAsync(new ArraySegment<byte>(buffer), CancellationToken.Token);
// TODO: Ensure complete message is received
var result = Encoding.ASCII.GetString(buffer, 0, response.Count);
LogFacade.Instance.LogDebug("Received headers for web socket verification: " + result);
SecurityService.DissectAndValidateFrame(result);
}