How to block thread until data is available?

Question

In my program i opened the socket and got inputStream. then i wanted to read the incoming data as it comes, so i wrote:
byte[] data = new byte[2007];
while (true) {
int count = in.read(data);
byte[] rcv = new byte[count];
System.arraycopy(data,0,rcv,0,count);
// ...process the data...
}but it succesfully reads only first datablock, the next time method "read" returns -1 and the exception was raised (byte[-1] is a very weird thing). Which method should i use in order to block the thread until the data would came.

Answer 1

Could you log if the Socket isConnected(), isClosed(), isBound(), and isInputShutdown() before a read?That won't help at all:
- isConnected() returns 'true' forever after a socket has been connected.
- isClosed() returns 'false' until this JVM closes this socket itself.
- isBound() returns 'true' forever after a socket has been connected or bound.
- isInputShutdown() returns 'false' until this JVM calls shutdownInput() on this socket itself.
Contrary to common misconception, none of these methods tell you anything about the state of the connection or what the other end has done. They can't. There is nothing in TCP that can do that except (a) the -1 EOS indication and (b) IOException: connection reset.
In this case it is clear that the peer has definitely closed the socket or shutdown its output.