/// <summary>
/// 接收消息
/// </summary>
public async Task ReceiveMessageAsync()
{
ArraySegment <byte> abuf = new ArraySegment <byte>(new byte[10240]);
byte[] buf = new byte[10240];
WebSocketReceiveResult wsdata = null;
string message = string.Empty;
try
{
try
{
// 开始异步接收数据
wsdata = await WebSocket.ReceiveAsync(abuf, cancel);
}
catch (WebSocketException ex)
{
if (ex.InnerException is HttpListenerException)
{
Console.WriteLine($"{ID}客户端断开连接");
await WebSocketCloseAsync(WebSocketCloseStatus.ProtocolError, GetExceptionMessage(ex));
return;
}
else
{
Console.WriteLine($"{ID}WebSocket 连接异常。原因：{GetExceptionMessage(ex)}");
await WebSocketCloseAsync(WebSocketCloseStatus.ProtocolError, GetExceptionMessage(ex));
return;
}
}
if (wsdata.CloseStatus.HasValue)
{
Console.WriteLine($"{ID}接受到关闭消息");
await WebSocketCloseAsync(wsdata.CloseStatus.Value, wsdata.CloseStatusDescription);
}
else
{
byte[] bRec = new byte[wsdata.Count];
Array.Copy(abuf.ToArray(), bRec, wsdata.Count);
if (WebSocketContextHandler.BeforeReceiveHandler(this, abuf))
{
message = Encoding.UTF8.GetString(bRec);
WebSocketContextHandler.AflterReceiveHandler(this, message);
}
Console.WriteLine($"{ID}接受到消息:{message}");
await ReceiveMessageAsync();
}
}
catch (Exception ex)
{
Console.WriteLine(ex);
return;
}
}
/// <summary>
/// 发送消息
/// </summary>
/// <param name="message"></param>
/// <returns></returns>
public async Task SendMessageAsync(string message)
{
if (WebSocketContextHandler.BeforeSendHandler(this, message))
{
Console.WriteLine($"{ID}发送消息:{message}");
await WebSocket.SendAsync(new ArraySegment <byte>(Encoding.UTF8.GetBytes(message)), WebSocketMessageType.Text, true, cancel);
WebSocketContextHandler.AflterSendHandler(this, message);
}
}
/// <summary>
/// WebSocket关闭
/// </summary>
/// <param name="webSocketCloseStatus">指示关闭 WebSocket 连接的原因</param>
/// <param name="statusDescription">指定一个可读的解释为连接关闭的原因。</param>
public async Task WebSocketCloseAsync(WebSocketCloseStatus webSocketCloseStatus, string statusDescription)
{
Console.WriteLine($"{ID}WebSocket关闭");
string message = statusDescription;
message = message.Length > 61 ? message.Substring(0, 61) : message;
await WebSocket.CloseAsync(webSocketCloseStatus, message, new CancellationToken());
WebSocketContextHandler.CloseWebStocketHandler(this, webSocketCloseStatus, statusDescription);
}
