InputStream
java.net.Socket.getInputStream()
throws IOException
Returns an input stream for this socket.If this socket has an associated channel then the resulting input stream
delegates all of its operations to the channel. If the channel is in
non-blocking mode then the input stream's read operations will throw an
java.nio.channels.IllegalBlockingModeException.Under abnormal conditions the underlying connection may be broken by the
remote host or the network software (for example a connection reset in the case
of TCP connections). When a broken connection is detected by the network
software the following applies to the returned input stream :-
The network software may discard bytes that are buffered by the socket. Bytes
that aren't discarded by the network software can be read using read.
If there are no bytes buffered on the socket, or all buffered bytes have been
consumed by read,
then all subsequent calls to read
will throw an IOException.
If there are no bytes buffered on the socket, and the socket has not been
closed using close,
then available
will return 0.
Closing the returned InputStream
will close the associated socket.
最後壹行，關閉返回的輸入流將會關閉關聯的socket