75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
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// Copyright (C) 2021 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include <functional>
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#include <memory>
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#include "net/async_data_channel.h"
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namespace android {
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namespace net {
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class AsyncDataChannelServer;
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// Callback thas is called when a new client connection has been accepted.
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using ConnectCallback = std::function<void(std::shared_ptr<AsyncDataChannel>,
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AsyncDataChannelServer* server)>;
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// An AsyncDataChannelServer is capable of listening to incoming connections.
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//
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// A Callback will be invoked whenever a new connection has been accepted.
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class AsyncDataChannelServer {
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public:
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// Destructor.
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virtual ~AsyncDataChannelServer() = default;
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// Start listening for new connections. The callback will be invoked
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// when a new socket has been accepted.
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//
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// errno will be set in case of failure.
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virtual bool StartListening() = 0;
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// Stop listening for new connections. The callback will not be
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// invoked, and sockets will not be accepted.
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//
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// This DOES not disconnect the server, and connections can still
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// be queued up.
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virtual void StopListening() = 0;
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// Disconnects the server, no new connections are possible.
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// The callback will never be invoked again.
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virtual void Close() = 0;
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// True if this server is connected and can accept incoming
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// connections.
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virtual bool Connected() = 0;
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// Registers the callback that should be invoked whenever a new socket was
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// accepted.
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//
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// Before the callback the server should have stopped listening for new
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// incoming connections. The callee is responsible for calling StartListening
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// if needed.
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void SetOnConnectCallback(const ConnectCallback& callback) {
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callback_ = callback;
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};
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protected:
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ConnectCallback callback_;
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};
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} // namespace net
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} // namespace android
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