Add OpenL2capServerSocket and skeleton BleL2capServerSocket/BleL2capSocket

PiperOrigin-RevId: 746334743

internal/platform/implementation/apple/ble_l2cap_server_socket.mm

@@ -0,0 +1,46 @@
+// Copyright 2025 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.
+
+#import "internal/platform/implementation/apple/ble_l2cap_server_socket.h"
+
+#import <Foundation/Foundation.h>
+
+#include <memory>
+#include <utility>
+
+#import "internal/platform/implementation/apple/Mediums/BLEv2/GNCBLEL2CAPServer.h"
+#import "internal/platform/implementation/apple/Mediums/BLEv2/GNCBLEL2CAPStream.h"
+#import "internal/platform/implementation/apple/ble_l2cap_socket.h"
+#import "GoogleToolboxForMac/GTMLogger.h"
+
+namespace nearby {
+namespace apple {
+
+BleL2capServerSocket::BleL2capServerSocket(GNCBLEL2CAPServer* l2cap_server)
+    : l2cap_server_(l2cap_server) {}
+
+int BleL2capServerSocket::GetPSM() const { return [l2cap_server_ PSM]; }
+
+std::unique_ptr<api::ble_v2::BleL2capSocket> BleL2capServerSocket::Accept() {
+  // TODO: edwinwu - Implement to wrap up l2cap channel with |GNCBLEL2CAPStream|.
+  return nullptr;
+}
+
+Exception BleL2capServerSocket::Close() {
+  [l2cap_server_ close];
+  return {Exception::kSuccess};
+}
+
+}  // namespace apple
+}  // namespace nearby