mirror of
https://github.com/kidfromjupiter/nearby.git
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79 lines
2.7 KiB
Objective-C
79 lines
2.7 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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#import <Foundation/Foundation.h>
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@class GNCBLEL2CAPStream;
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NS_ASSUME_NONNULL_BEGIN
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/// Block invoked when the stream is closed.
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typedef void (^GNCBLEL2CAPStreamClosedBlock)(void);
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/** Delegate for @c GNCBLEL2CAPStream. */
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@protocol GNCBLEL2CAPStreamDelegate <NSObject>
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/**
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* Called when data is received from the remote device on the L2CAP connection.
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*
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* @param data The data received from the remote device.
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*/
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- (void)stream:(GNCBLEL2CAPStream *)stream didReceiveData:(NSData *)data;
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/**
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* Called when the stream is closed.
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*/
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- (void)stream:(GNCBLEL2CAPStream *)stream didDisconnectWithError:(NSError *_Nullable)error;
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@end
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/**
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* Abstraction to take in two streams returned from L2CAP controller and provide a simplified
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* interface to send and receive data from the streams.
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* This class is thread-safe.
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*/
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@interface GNCBLEL2CAPStream : NSObject
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/// Delegate for @c GNCBLEL2CAPStream
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@property(nonatomic, weak) id<GNCBLEL2CAPStreamDelegate> delegate;
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/// Returns an instance of @c GNCBLEL2CAPStream which sends and receives data on |inputStream|
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/// and |outputStream|.
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/// Invokes |closedBlock| if stream closed signal is received when reading data.
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/// The stream should be torn down when this block is called.
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- (instancetype)initWithClosedBlock:(GNCBLEL2CAPStreamClosedBlock)closedBlock
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inputStream:(NSInputStream *)inputStream
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outputStream:(NSOutputStream *)outputStream NS_DESIGNATED_INITIALIZER;
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- (instancetype)init NS_UNAVAILABLE;
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/// Queues up |data| to be sent to the device. Asserts if |data| is empty.
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///
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/// |completionBlock| is invoked on an arbitrary queue after sending finishes. If the parameter is
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/// YES, data is completely written to the local L2CAP socket. Note that this does not necessarily
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/// mean the device received it. NO indicates writing failed, which typically happens when the
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/// stream is torn down.
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// TODO edwinwu - Makes the completionBlock nullable.
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- (void)sendData:(NSData *)data completionBlock:(void (^)(BOOL))completionBlock;
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/// Closes the stream.
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- (void)close;
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/// Tears down the stream.
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- (void)tearDown;
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@end
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NS_ASSUME_NONNULL_END
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