79 lines
2.3 KiB
C#
79 lines
2.3 KiB
C#
/*
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* Copyright (c) 2024 ETH Zürich, IT Services
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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using System;
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using SafeExamBrowser.Communication.Hosts;
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using SafeExamBrowser.Communication.Contracts;
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using SafeExamBrowser.Communication.Contracts.Data;
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using SafeExamBrowser.Communication.Contracts.Events;
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using SafeExamBrowser.Communication.Contracts.Hosts;
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using SafeExamBrowser.Logging.Contracts;
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namespace SafeExamBrowser.Service.Communication
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{
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internal class ServiceHost : BaseHost, IServiceHost
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{
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private bool allowConnection;
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public event CommunicationEventHandler<SessionStartEventArgs> SessionStartRequested;
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public event CommunicationEventHandler<SessionStopEventArgs> SessionStopRequested;
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public event CommunicationEventHandler SystemConfigurationUpdateRequested;
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internal ServiceHost(string address, IHostObjectFactory factory, ILogger logger, int timeout_ms) : base(address, factory, logger, timeout_ms)
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{
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allowConnection = true;
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}
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protected override bool OnConnect(Guid? token)
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{
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var allow = allowConnection;
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if (allow)
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{
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allowConnection = false;
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}
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return allow;
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}
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protected override void OnDisconnect(Interlocutor interlocutor)
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{
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if (interlocutor == Interlocutor.Runtime)
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{
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allowConnection = true;
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}
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}
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protected override Response OnReceive(Message message)
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{
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switch (message)
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{
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case SessionStartMessage m:
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SessionStartRequested?.InvokeAsync(new SessionStartEventArgs { Configuration = m.Configuration });
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return new SimpleResponse(SimpleResponsePurport.Acknowledged);
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case SessionStopMessage m:
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SessionStopRequested?.InvokeAsync(new SessionStopEventArgs { SessionId = m.SessionId });
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return new SimpleResponse(SimpleResponsePurport.Acknowledged);
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}
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return new SimpleResponse(SimpleResponsePurport.UnknownMessage);
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}
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protected override Response OnReceive(SimpleMessagePurport message)
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{
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switch (message)
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{
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case SimpleMessagePurport.UpdateSystemConfiguration:
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SystemConfigurationUpdateRequested?.InvokeAsync();
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return new SimpleResponse(SimpleResponsePurport.Acknowledged);
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}
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return new SimpleResponse(SimpleResponsePurport.UnknownMessage);
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}
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}
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}
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