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https://github.com/kidfromjupiter/nearby.git
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59 lines
2.1 KiB
C++
59 lines
2.1 KiB
C++
// Copyright 2022 Google LLC
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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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// https://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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#ifndef THIRD_PARTY_NEARBY_SHARING_NEARBY_CONNECTION_H_
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#define THIRD_PARTY_NEARBY_SHARING_NEARBY_CONNECTION_H_
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#include <cstdint>
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#include <functional>
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#include <optional>
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#include <vector>
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namespace nearby {
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namespace sharing {
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// A socket-like wrapper around Nearby Connections that allows for asynchronous
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// reads and writes.
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class NearbyConnection {
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public:
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using ReadCallback =
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std::function<void(std::optional<std::vector<uint8_t>> bytes)>;
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virtual ~NearbyConnection() = default;
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// Reads a stream of bytes from the remote device. Invoke |callback| when
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// there is incoming data or when the socket is closed. Previously set
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// callback will be replaced by |callback|. Must not be used on an already
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// closed connection.
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virtual void Read(ReadCallback callback) = 0;
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// Writes an outgoing stream of bytes to the remote device asynchronously.
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// Must not be used on an already closed connection.
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virtual void Write(std::vector<uint8_t> bytes) = 0;
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// Closes the socket and disconnects from the remote device. This object will
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// be invalidated after |callback| in SetDisconnectionListener is invoked.
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virtual void Close() = 0;
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// Listens to the socket being closed. Invoke |callback| when the socket is
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// closed. This object will be invalidated after |listener| is invoked.
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// Previously set listener will be replaced by |listener|.
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virtual void SetDisconnectionListener(std::function<void()> listener) = 0;
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};
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} // namespace sharing
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} // namespace nearby
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#endif // THIRD_PARTY_NEARBY_SHARING_NEARBY_CONNECTION_H_
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