確定通過NSStream成功建立連接和斷開連接

我想寫一些像NSStream包裝的東西，使我的生活更輕鬆。我只想知道什麼時候建立連接，什麼時候關閉，寫入一些獲取數據的數據。所以我想是這樣的：確定通過NSStream成功建立連接和斷開連接

頁眉：

@interface StreamWrapper : NSObject 

- (id)initWithDelegate:(id <StreamWrapperDelegate>)delegate; 
- (void)writeData:(NSData *)data; 

@end 

@protocol StreamWrapperDelegate <NSObject> 

@required 
- (void)streamWrapper:(StreamWrapper *)streamWrapper didReceiveData:(NSData *)data; 
- (void)streamWrapperDidConnect:(StreamWrapper *)streamWrapper; 
- (void)streamWrapperDidCloseConnection:(StreamWrapper *)streamWrapper; 

@end

類：

@interface StreamWrapper() <NSStreamDelegate> 

... 
@property (nonatomic, weak) id <StreamWrapperDelegate> delegate; 
@property (nonatomic, strong) NSInputStream *inputStream; 
@property (nonatomic, strong) NSOutputStream *outputStream; 

- (void)closeStreams; 
- (void)setAndOpenStreams; 

@end 

@implementation StreamWrapper 

#pragma mark - NSStreamDelegate 

- (void)stream:(NSStream *)aStream handleEvent:(NSStreamEvent)eventCode 
{ 
    switch (eventCode) { 

     case NSStreamEventEndEncountered: 
      // Should I here close both streams (even if this is called only for one (in or out)) and delegate closed connection? 
      break; 

     case NSStreamEventErrorOccurred: 
      // Should I here close both streams (even if this is called only for one (in or out)) and delegate closed connection? 
      break; 

     case NSStreamEventHasBytesAvailable: 
      // My reading algorithm... 
      [self.delegate streamWrapper:self didReceiveData:data]; 
      break; 

     case NSStreamEventHasSpaceAvailable: 
      // Is this useful for me? 
      break; 

     case NSStreamEventNone: 
      // Is this useful for me? 
      break; 

     case NSStreamEventOpenCompleted: 
      // Should I here delegate successful connection? Should I wait to receive this for both streams? How? 
      break; 

     default: 
      break; 
    } 
} 

... 

@end

所以......如何實現，我將永遠知道在連接建立的時候和我能夠發送和接收數據，什麼時候連接斷開（甚至只有一種方式），我應該關閉它並嘗試新的設置？或者什麼是正確的方式來做這樣的事情？

來源

2012-10-24 user500

根據Apple's Developer Website

NSStreamEventNone 
No event has occurred. 

Available in OS X v10.3 and later. 

Declared in NSStream.h. 

NSStreamEventOpenCompleted 
The open has completed successfully. 

Available in OS X v10.3 and later. 

Declared in NSStream.h. 

NSStreamEventHasBytesAvailable 
The stream has bytes to be read. 

    Available in OS X v10.3 and later. 

Declared in NSStream.h. 

NSStreamEventHasSpaceAvailable 
The stream can accept bytes for writing. 

Available in OS X v10.3 and later. 

Declared in NSStream.h. 

NSStreamEventErrorOccurred 
An error has occurred on the stream. 

Available in OS X v10.3 and later. 

Declared in NSStream.h. 

NSStreamEventEndEncountered 
The end of the stream has been reached. 

Available in OS X v10.3 and later. 

Declared in NSStream.h.

也請參閱本文章以瞭解更多信息：

Article : Byte-available event

Article : space-available event

來源

2012-11-01 06:38:26

我討厭這種答案，但在這種情況下，我配得上它。 – user500

如果它不解決您的問題，我可以爲您提供一個示例源代碼。我正在研究的那個 –

嗯，我想現在我能夠做到這一點，但如果可能的話，我也希望看到您的解決方案。 – user500

我與NS以往的經驗Stream將捕獲第一個NSStreamEventHasSpaceAvailable事件作爲建立連接的信號。

當Error或Completed消息出現時，我也沒有輸出和輸出流 - 所以我只需要檢查這些流是否在writeData：方法中爲零。

來源

2012-11-02 04:02:16

確定通過NSStream成功建立連接和斷開連接

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