ble_l2cap sockets implemented. NOT WORKING THOUGH. I suspect l2cap sockets over LE require pairing even though its said it doesn't need pairing if security level is set properly on socket.

2026-09-16 15:36:12 -04:00 · 2026-01-14 13:15:49 +00:00
parent f14d0ee04d
commit 4c3656b160
8 changed files with 1090 additions and 0 deletions
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+// Copyright 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef PLATFORM_IMPL_LINUX_API_BLE_V2_SOCKET_ADAPTER_H_
+#define PLATFORM_IMPL_LINUX_API_BLE_V2_SOCKET_ADAPTER_H_
+
+#include <memory>
+#include <string>
+
+#include "absl/container/flat_hash_map.h"
+#include "absl/synchronization/mutex.h"
+#include "internal/platform/byte_array.h"
+#include "internal/platform/implementation/ble_v2.h"
+#include "internal/platform/implementation/linux/ble_v2_socket.h"
+#include "internal/platform/uuid.h"
+
+namespace nearby {
+namespace linux {
+
+// Helper class to adapt GATT server callbacks to socket data streams
+// This wires up the ServerGattConnectionCallback to feed data into BleV2Socket
+class BleV2SocketAdapter {
+ public:
+  BleV2SocketAdapter() = default;
+  ~BleV2SocketAdapter() = default;
+
+  // Create GATT server callbacks that will route data to/from sockets
+  api::ble_v2::ServerGattConnectionCallback CreateServerCallbacks();
+
+  // Register a socket for a specific remote device
+  // When GATT writes come from this device, data is routed to this socket
+  void RegisterSocket(api::ble_v2::BlePeripheral::UniqueId device_id,
+                     BleV2Socket* socket) ABSL_LOCKS_EXCLUDED(mutex_);
+
+  // Unregister a socket
+  void UnregisterSocket(api::ble_v2::BlePeripheral::UniqueId device_id)
+      ABSL_LOCKS_EXCLUDED(mutex_);
+
+  // Get the RX characteristic UUID (for receiving data from remote)
+  static Uuid GetRxCharacteristicUuid();
+
+  // Get the TX characteristic UUID (for sending data to remote)
+  static Uuid GetTxCharacteristicUuid();
+
+ private:
+  absl::Mutex mutex_;
+  // Map of device ID to socket for routing incoming GATT writes
+  absl::flat_hash_map<api::ble_v2::BlePeripheral::UniqueId, BleV2Socket*>
+      device_sockets_ ABSL_GUARDED_BY(mutex_);
+};
+
+}  // namespace linux
+}  // namespace nearby
+
+#endif  // PLATFORM_IMPL_LINUX_API_BLE_V2_SOCKET_ADAPTER_H_