84 lines
2.5 KiB
C#
84 lines
2.5 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;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Http;
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using Microsoft.AspNetCore.Sockets;
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namespace SocialWeather
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{
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public class PersistentConnectionLifeTimeManager
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{
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private readonly FormatterResolver _formatterResolver;
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private readonly ConnectionList _connectionList = new ConnectionList();
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public PersistentConnectionLifeTimeManager(FormatterResolver formatterResolver)
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{
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_formatterResolver = formatterResolver;
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}
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public void OnConnectedAsync(ConnectionContext connection)
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{
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connection.Metadata["format"] = "json";
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_connectionList.Add(connection);
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}
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public void OnDisconnectedAsync(ConnectionContext connection)
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{
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_connectionList.Remove(connection);
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}
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public async Task SendToAllAsync<T>(T data)
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{
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foreach (var connection in _connectionList)
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{
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var context = connection.GetHttpContext();
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var formatter = _formatterResolver.GetFormatter<T>(connection.Metadata.Get<string>("format"));
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var ms = new MemoryStream();
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await formatter.WriteAsync(data, ms);
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connection.Transport.Output.TryWrite(ms.ToArray());
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}
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}
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public Task InvokeConnectionAsync(string connectionId, object data)
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{
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throw new NotImplementedException();
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}
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public Task InvokeGroupAsync(string groupName, object data)
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{
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throw new NotImplementedException();
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}
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public Task InvokeUserAsync(string userId, object data)
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{
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throw new NotImplementedException();
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}
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public void AddGroupAsync(ConnectionContext connection, string groupName)
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{
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var groups = connection.Metadata.GetOrAdd("groups", _ => new HashSet<string>());
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lock (groups)
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{
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groups.Add(groupName);
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}
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}
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public void RemoveGroupAsync(ConnectionContext connection, string groupName)
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{
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var groups = connection.Metadata.Get<HashSet<string>>("groups");
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if (groups != null)
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{
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lock (groups)
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{
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groups.Remove(groupName);
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}
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}
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}
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}
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}
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