mirror of
https://github.com/kidfromjupiter/nearby.git
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74 lines
2.5 KiB
Objective-C
74 lines
2.5 KiB
Objective-C
// Copyright 2025 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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#include <memory>
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#include "absl/functional/any_invocable.h"
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#include "internal/platform/exception.h"
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#include "internal/platform/implementation/ble_v2.h"
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#import "internal/platform/implementation/apple/ble_l2cap_socket.h"
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namespace nearby {
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namespace apple {
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// A BLE L2CAP server socket for listening incoming L2CAP socket.
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class BleL2capServerSocket : public api::ble_v2::BleL2capServerSocket {
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public:
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BleL2capServerSocket() = default;
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~BleL2capServerSocket() override;
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// Gets PSM value has been published by the server.
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int GetPSM() const override;
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// Sets PSM value has been published by the server.
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void SetPSM(int psm);
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// Wait for an available socket.
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//
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// Blocks until either:
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// - at least one incoming connection request is available, or
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// - ServerSocket is closed.
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// On success, returns connected socket, ready to exchange data.
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// Returns nullptr on error.
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// Once error is reported, it is permanent, and L2CAP ServerSocket has to be
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// closed.
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std::unique_ptr<api::ble_v2::BleL2capSocket> Accept() override
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ABSL_LOCKS_EXCLUDED(mutex_);
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// Closes the L2CAP server socket.
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Exception Close() override;
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// Adds a pending socket to the server socket.
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bool AddPendingSocket(std::unique_ptr<BleL2capSocket> socket);
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// Called by the server side of a connection before accessing the server
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// socket pointer at the callback of l2cap channel creation, to track validity
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// of a pointer to this server socket.
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void SetCloseNotifier(absl::AnyInvocable<void()> notifier)
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ABSL_LOCKS_EXCLUDED(mutex_);
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private:
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Exception DoClose() ABSL_EXCLUSIVE_LOCKS_REQUIRED(mutex_);
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mutable absl::Mutex mutex_;
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absl::CondVar cond_;
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absl::flat_hash_set<std::unique_ptr<BleL2capSocket>> pending_sockets_
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ABSL_GUARDED_BY(mutex_);
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absl::AnyInvocable<void()> close_notifier_ ABSL_GUARDED_BY(mutex_);
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bool closed_ ABSL_GUARDED_BY(mutex_) = false;
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int psm_ = 0;
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};
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} // namespace apple
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} // namespace nearby |