Hello friends
i am using CoreFoundation api following is my code 
- (void)TcpClientInitialise
{
	
    CFReadStreamRef readStream;
    CFWriteStreamRef writeStream;
	
	
    CFStreamCreatePairWithSocketToHost(NULL, (CFStringRef)@"192.168.0.104",2000, &readStream, &writeStream);
    NSLog(@"Tcp Client Initialise");
    inputStream = (__bridge NSInputStream *)readStream;
    outputStream = (__bridge NSOutputStream *)writeStream;
	
	[inputStream setDelegate:self];
	[outputStream setDelegate:self];
	
	[inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
	[outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
	
	[inputStream open];
	[outputStream open];
} this is working fine but the problem is when i use this methos again it show me error 
Domain=NSPOSIXErrorDomain Code=54 "The operation couldn’t be completed   can please some one help me why i am getting this problem