Также проверьте следующий код, он прекрасно работает ...
- (IBAction)sendCommand:(id)sender {
NSHost *host = [NSHost hostWithAddress:@"111.111.111.111"];
if (host != nil)
{
// iStream and oStream are instance variables
[NSStream getStreamsToHost:host port:2222 inputStream:&iStream outputStream:&oStream];
//iStream is instance var of NSSInputStream
[iStream retain];
[iStream setDelegate:self];
[iStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[iStream open];
//oStream is instance var of NSSOutputStream
[oStream retain];
[oStream setDelegate:self];
[oStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[oStream open];
NSError *streamError;
streamError = [iStream streamError];
streamError = [oStream streamError];
NSStreamStatus streamStatus;
streamStatus = [iStream streamStatus];
streamStatus = [oStream streamStatus];
}
}
- (void)stream:(NSStream *)theStream handleEvent:(NSStreamEvent)streamEvent
{
NSString *io;
if (theStream == iStream) io = @">>";
else io = @"<<";
NSString *event;
switch (streamEvent)
{
case NSStreamEventNone:
event = @"NSStreamEventNone";
resultText.font = [UIFont fontWithName:@"Helvetica" size:10.0];
resultText.textColor = [UIColor whiteColor];
resultText.text = [[NSString alloc] initWithFormat: @"Can not connect to the host!"];
break;
case NSStreamEventOpenCompleted:
event = @"NSStreamEventOpenCompleted";
break;
case NSStreamEventHasBytesAvailable:
event = @"NSStreamEventHasBytesAvailable";
if (theStream == iStream)
{
//read data
uint8_t buffer[1024];
int len;
while ([iStream hasBytesAvailable])
{
len = [iStream read:buffer maxLength:sizeof(buffer)];
if (len > 0)
{
NSString *output = [[NSString alloc] initWithBytes:buffer length:len encoding:NSASCIIStringEncoding];
NSData *theData = [[NSData alloc] initWithBytes:buffer length:len];
if (nil != output)
{
//do something with data
}
}
}
}
break;
case NSStreamEventHasSpaceAvailable:
event = @"NSStreamEventHasSpaceAvailable";
if (theStream == oStream)
{
//send data
uint8_t buffer[11] = "I send this";
int len;
len = [oStream write:buffer maxLength:sizeof(buffer)];
if (len > 0)
{
NSLog(@"Command send");
[oStream close];
}
}
break;
case NSStreamEventErrorOccurred:
event = @"NSStreamEventErrorOccurred";
resultText.font = [UIFont fontWithName:@"Helvetica" size:10.0];
resultText.textColor = [UIColor whiteColor];
resultText.text = [[NSString alloc] initWithFormat: @"Can not connect to the host!"];
break;
case NSStreamEventEndEncountered:
event = @"NSStreamEventEndEncountered";
[theStream close];
[theStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[theStream release];
theStream = nil;
break;
default:
event = @"** Unknown";
}
NSLog(@"%@ : %@", io, event);
}