69 lines
2.2 KiB
C#
69 lines
2.2 KiB
C#
// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System;
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using System.Collections.Generic;
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using System.IO.Pipelines;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Threading.Tasks.Channels;
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using Microsoft.AspNetCore.Sockets;
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namespace SocketsSample.EndPoints
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{
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public class MessagesEndPoint : EndPoint
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{
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public ConnectionList Connections { get; } = new ConnectionList();
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public override async Task OnConnectedAsync(Connection connection)
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{
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Connections.Add(connection);
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await Broadcast($"{connection.ConnectionId} connected ({connection.Metadata["transport"]})");
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try
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{
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while (await connection.Transport.Input.WaitToReadAsync())
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{
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Message message;
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if (connection.Transport.Input.TryRead(out message))
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{
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using (message)
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{
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// We can avoid the copy here but we'll deal with that later
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await Broadcast(message.Payload.Buffer, message.MessageFormat, message.EndOfMessage);
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}
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}
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}
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}
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finally
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{
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Connections.Remove(connection);
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await Broadcast($"{connection.ConnectionId} disconnected ({connection.Metadata["transport"]})");
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}
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}
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private Task Broadcast(string text)
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{
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return Broadcast(ReadableBuffer.Create(Encoding.UTF8.GetBytes(text)), Format.Text, endOfMessage: true);
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}
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private Task Broadcast(ReadableBuffer payload, Format format, bool endOfMessage)
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{
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var tasks = new List<Task>(Connections.Count);
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foreach (var c in Connections)
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{
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tasks.Add(c.Transport.Output.WriteAsync(new Message(
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payload.Preserve(),
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format,
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endOfMessage)));
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}
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return Task.WhenAll(tasks);
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}
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}
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}
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