[NSFileHandle][Sockets] How to manage a network disconnection?

Hi,
I have built a client/server app that communicates via TCP/IP.
The *Client is an iPhone Application* that receives and sends many messages of variable sizes through a NSFileHandle object linked with a socket as its filedescriptor
I catch *incoming bytes trough an Observer* whose matching message is named "DataAvailable:(NSNotification *)aNotification".
*When the server stops*, the observer receives one last "dataAvailable" notification, which I try to manage with the [NSFileHandle readdataoflength:1]... that throws an *exception indicating the +connection has been reset by peer+* , which I catch and manage through a SocketDidDisconnect: homemade message.
But I have a *problem when the disconnection occurs directly because of a network disconnection* (I did disconnect the network on purpose) : I receive *no "DataAvailable" notification* (although it receive one I just close the connection from the server Application).
Then I thought I could check every 1/10 seconds if my connection was still ok by trying to do a [MyNSFileHandle ReadDataOfLength:0] : that would throw an exception as soon as my connection goes down. But obviously, reading 0 bytes does not have any effect. And since I don't wanna loose the queued incoming data by various random reading, I don't know how to detect such a network problem.
If any of your has an idea about *how to manage a network disconnection with a NSFileHandle without involving the random reading of queued incoming data*, I will listen to you with the greatest interest.
Thank you for reading till the end.

Looks like it will be of some help, yes.
But I don't have time to test it today. I'll tell you as soon as I have tested it.
Thanks anywa for your help

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[NSFileHandle][Sockets] How to manage a network disconnection?

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