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plurals

POSocket connection between Java and Objective C
primarykey
Id
6165502
data
AcceptedAnswerId
6168442
AnswerCount
2
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2011-05-29T01:53:59.623
FavoriteCount
4
LastActivityDate
2011-05-29T15:04:07.413
LastEditDate
LastEditorUserId
0
OwnerUserId
198514
ParentId
0
PostTypeId
1
Score
1
ViewCount
8417
LastEditorDisplayName
text
Body
I am trying to write a server in Java and communicate with it using an iPhone app (Objective C). The connection goes through, and I can write data to the server, but I can't read data back from the server. I get a notification that there is data to be read, but it's empty. The Java code was taken mostly from <a href="http://download.oracle.com/javase/tutorial/networking/sockets/clientServer.html" rel="nofollow">an Oracle example</a>. <pre><code>PrintWriter out = new PrintWriter(socket.getOutputStream(), true); BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream())); String inputLine; out.println("Hello World"); while ((inputLine = in.readLine()) != null) { System.out.println(inputLine); System.out.flush(); out.println("test"); if (inputLine.equals("Bye")) { break; } } out.close(); in.close(); socket.close(); </code></pre> And the Objective C client: <pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. [[UIApplication sharedApplication] setKeepAliveTimeout:600 handler:^(void) { NSLog(@"staying alive!"); [[DABMultitaskingController sharedInstance] startTask]; }]; CFReadStreamRef readStream; CFWriteStreamRef writeStream; CFStreamCreatePairWithSocketToHost(NULL, (CFStringRef)@"10.0.1.189", 4444, &readStream, &writeStream); NSInputStream *inputStream = (NSInputStream *)readStream; NSOutputStream *outputStream = (NSOutputStream *)writeStream; [inputStream setDelegate:self]; [outputStream setDelegate:self]; [inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; [outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; [inputStream open]; [outputStream open]; _dataToSend = [[NSData dataWithBytes:"This is a test" length:15] retain]; self.window.rootViewController = self.viewController; [self.window makeKeyAndVisible]; return YES; } - (void)stream:(NSStream *)theStream handleEvent:(NSStreamEvent)streamEvent { switch (streamEvent) { case NSStreamEventHasBytesAvailable: { NSLog(@"can read: %@", theStream); uint8_t *buffer; NSUInteger length; [(NSInputStream *)theStream getBuffer:&buffer length:&length]; NSData *data = [NSData dataWithBytes:buffer length:length]; NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; NSLog(@"bytes: %@", data); NSLog(@"string: %@", string); break; } case NSStreamEventHasSpaceAvailable: { NSLog(@"can write: %@", theStream); if (_dataToSend != nil) { NSLog(@"write: %@", _dataToSend); [(NSOutputStream *)theStream write:[_dataToSend bytes] maxLength:[_dataToSend length]]; [_dataToSend release]; _dataToSend = nil; } break; } case NSStreamEventOpenCompleted: { NSLog(@"open complete: %@", theStream); break; } case NSStreamEventErrorOccurred: { NSLog(@"error occurred: %@", theStream); break; } case NSStreamEventEndEncountered: { NSLog(@"end encountered: %@", theStream); break; } default: break; } } </code></pre>
Tags
<java><iphone><objective-c><sockets>
Title
Socket connection between Java and Objective C
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USDavid Beck
plurals
PostLinksPostIdRelatedPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
2. PO
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 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
CommentsPostId
1. This table or related slice is empty.

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