Re: Reading a string from a socket

FROM : Chris Parker
DATE : Fri Jan 18 23:30:28 2008

On Jan 18, 2008, at 2:17 PM, Daniel Smith wrote:

> 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.


If you're using NSNetServices to discover hosts, can't you just use 
this method:

   - (BOOL)getInputStream:(NSInputStream **)inputStream outputStream:
(NSOutputStream **)outputStream;

defined in NSNetServices.h to pick up the streams? This completely 
forgoes any resolution and just fills in the streams parameters for you.

.chris

--
Chris Parker
Cocoa Frameworks
Apple Inc.