Move Server Socket and its dependencies to their own files

PiperOrigin-RevId: 551330682
2026-09-16 15:36:12 -04:00 · 2023-07-26 15:21:46 -07:00
parent 2145ccce69
commit a42cdc7346
8 changed files with 625 additions and 0 deletions
@@ -0,0 +1,76 @@
+// Copyright 2023 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.
+
+// Note: File language is detected using heuristics. Many Objective-C++ headers are incorrectly
+// classified as C++ resulting in invalid linter errors. The use of "NSArray" and other Foundation
+// classes like "NSData", "NSDictionary" and "NSUUID" are highly weighted for Objective-C and
+// Objective-C++ scores. Oddly, "#import <Foundation/Foundation.h>" does not contribute any points.
+// This comment alone should be enough to trick the IDE in to believing this is actually some sort
+// of Objective-C file. See: cs/google3/devtools/search/lang/recognize_language_classifiers_data
+
+// TODO(b/293336684): Remove this file when shared Weave is complete.
+
+#import <Foundation/Foundation.h>
+
+#include <memory>
+
+#include "absl/functional/any_invocable.h"
+#include "internal/platform/exception.h"
+#include "internal/platform/implementation/ble_v2.h"
+
+#import "internal/platform/implementation/apple/ble_socket.h"
+
+namespace nearby {
+namespace apple {
+
+// A BLE server socket for listening for incoming Weave sockets.
+class BleServerSocket : public api::ble_v2::BleServerSocket {
+ public:
+  BleServerSocket() = default;
+  ~BleServerSocket() override;
+
+  // Wait for an available socket.
+  //
+  // Blocks until either:
+  // - at least one incoming connection request is available, or
+  // - ServerSocket is closed.
+  //
+  // On success, returns connected socket, ready to exchange data or nullptr on
+  // error. Once error is reported, it is permanent, and ServerSocket must be
+  // closed.
+  std::unique_ptr<api::ble_v2::BleSocket> Accept() override
+      ABSL_LOCKS_EXCLUDED(mutex_);
+
+  // Close the server socket.
+  //
+  // Returns Exception::kIo on error, otherwise Exception::kSuccess.
+  Exception Close() override ABSL_LOCKS_EXCLUDED(mutex_);
+
+  bool Connect(std::unique_ptr<BleSocket> socket) ABSL_LOCKS_EXCLUDED(mutex_);
+  void SetCloseNotifier(absl::AnyInvocable<void()> notifier)
+      ABSL_LOCKS_EXCLUDED(mutex_);
+
+ private:
+  Exception DoClose() ABSL_EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+
+  mutable absl::Mutex mutex_;
+  absl::CondVar cond_;
+  absl::flat_hash_set<std::unique_ptr<BleSocket>> pending_sockets_
+      ABSL_GUARDED_BY(mutex_);
+  absl::AnyInvocable<void()> close_notifier_ ABSL_GUARDED_BY(mutex_);
+  bool closed_ ABSL_GUARDED_BY(mutex_) = false;
+};
+
+}  // namespace apple
+}  // namespace nearby