Re: NSSocketPort and NSFileHandle as simple network architecture

FROM : Douglas Davidson
DATE : Wed Oct 13 21:20:42 2004

On Oct 13, 2004, at 12:14 PM, Charles Françoise wrote:


> I am trying to make a simple network architecture based on
> NSSocketPort and NSFileHandle. I have my server functioning just fine
> (receives messages and everything). But I can't get a client to send
> any data.
>
> I intialize my connection using :
>
>    socketPort = [[NSSocketPort alloc] initRemoteWithTCPPort:port
> host:hostname];
>    socketHandle = [[NSFileHandle alloc]
> initWithFileDescriptor:[socketPort socket]];
>
> socketPort being an instance of NSSocketPort and socketHandle and
> instance of NSFileHandle. But when I try to write data to the Socket
> (using NSFileHandle's writeData:(NSData *)), I get a 
> -[NSConcreteFileHandle writeData:]: Bad file descriptor error.
>
> Please do not tell me that I can do this another way, I've tried them
> (SmallSockets, NSStream, BSD Sockets) and got them to work. I'm trying
> to get the NSSocketPort to act as client.


NSSocketPort doesn't do what you seem to think it does.  NSSocketPort
is not a socket; it is an NSPort subclass implemented using sockets. 
It's primarily used for Distributed Objects.  Look up the NSPort and
Distributed Objects documentation for more information.

Douglas Davidson