Sockets on iPhone

- (void)sendcmd:(NSString*)cmd {
 
 NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
 NSString *hostname= [defaults stringForKey:@"hostname"];
 
 NSHost *host=[NSHost hostWithName:hostname];
 
 if (host) {
 
 struct sockaddr_in addr;
 int sockfd;
 // Create a socket
 sockfd = socket( AF_INET, SOCK_STREAM, 0 );
 
 
 addr.sin_family = AF_INET;
 addr.sinaddr.saddr = inet_addr([[host address] UTF8String]);
 addr.sin_port = htons( 2001 );
 int conn = connect(sockfd, &addr, sizeof(addr)); 
 
 if (!conn) {
 
 NSData* data = [cmd dataUsingEncoding:NSISOLatin1StringEncoding];
 
 ssize_t datasend = send(sockfd, [data bytes], [data length], 0);
 datasend++;
 
 
 //ssize_t send(int, const void *, size_t, int) _DARWIN_ALIASC(send);
 
 
 close(sockfd);
 } else {
 // create a popup here!
 
 
 UIAlertView *alert = [[UIAlertView alloc] initWithTitle:[@"Connection failed to host " stringByAppendingString:hostname] message:@"Please check the hostname in the preferences." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
 [alert show];
 [alert release];
 }
 
 } else {
 
 UIAlertView *alert = [[UIAlertView alloc] initWithTitle:[@"Could not look up host " stringByAppendingString:hostname] message:@"Please check the hostname in the preferences." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
 [alert show];
 [alert release];
 }
 
}