Pray for breaking the law

blocking IO in = read (buffer) , if in broken due to network reasons , has been blocked , the program will be suspended , even if the recovery over time , in can not continue , so causing the program to hang died there due to hang , but also an exception can not be caught , I do nothing , seeking master to a blocking IO solution
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that write their own code
1. closing the Session when a notification to the queue , let it recover from a blocking state
2. use with a timeout of blocking access ways
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two suggested :
1, to establish a network connection, set the timeout parameter ;
2, using NIO technology , ie non-blocking IO.
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1. networks which parameters should be set before the connection ?
ftp.setDefaultTimeout (2 * 60 * 1000);
ftp.setSoTimeout (5 * 60 * 1000);
these two sets are still blocked
2.nio change too, I dreaded other problems arise , they still want to punch blocking IO start here
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resolved, ftp.setDataTimeout (1000);