Re: Reading a string from a socket

FROM : Daniel Smith
DATE : Fri Jan 18 23:17:58 2008

On Jan 18, 2008, at 2:01 PM, Hamish Allan wrote:

> On Jan 18, 2008 7:07 PM, Daniel Smith <<email_removed>> wrote:
>

>> Any suggestions?  Can I make this code work?  Or should I be trying a
>> different approach (note that I don't want to change the server in
>> any way)?  Perhaps I'd be better off using lower-level APIs?

>
> Take a look at http://developer.apple.com/documentation/Cocoa/
> Conceptual/Streams/Articles/NetworkStreams.html
>
> Hamish


Thanks for that suggestion.  I had looked into 
NSStream:getStreamsToHost previously, and forgot to mention why I 
avoided it: I'm using Bonjour to locate the server, which gives me an 
NSNetService.  The address information I get from 
NSNetService:addresses is already encoded as a sockaddr struct. 
While my example didn't demonstrate it, what I was ultimately trying 
to use is the NSSocketPort:initRemoteWithProtocolFamily:... 
constructor, because it takes a sockaddr as input.  Alternatively, I 
would need to be able to map from the sockaddr to an IP address and 
port in a format that NSStream:getStreamsToHost or some other method 
understands.

I'm not wild about the idea of turning an IP address encoded as bytes 
into a string, just so that I can conform to an interface (which will 
promptly parse my string into bytes again); and while NSNetService 
has a hostName method, I don't like the idea of generating another 
DNS query just to resolve a host name that has already been resolved, 
either.

—Dan