gistfile1.txt

- (void)connect
{
    CFReadStreamRef  readStream;
    CFWriteStreamRef writeStream;
    CFStreamCreatePairWithSocketToHost(NULL,
                                       SERVER,
                                       PORT,
                                       &readStream,
                                       &writeStream);
    [self setInputStream:(NSInputStream *)readStream];
    [self setOutputStream:(NSOutputStream *)writeStream];
    CFRelease(readStream);
    CFRelease(writeStream);
    
    hasConnected = NO;
    [[self inputStream] setDelegate:self];
    [[self outputStream] setDelegate:self];
    NSRunLoop *runLoop = [NSRunLoop currentRunLoop];
    [[self inputStream] scheduleInRunLoop:runLoop forMode:NSDefaultRunLoopMode];
    [[self outputStream] scheduleInRunLoop:runLoop forMode:NSDefaultRunLoopMode];
    [[self inputStream] open];
    [[self outputStream] open];
}


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