socket.close（）会中断数据传输吗？

Question

OutputStream out = socket.getOutputStream();
out.write(someData);
socket.close();

Will socket.close() cause the peer socket not to receive someData ?

Answer 1

Will socket.close() cause the peer socket not to receive someData?

Definitely not, in this case . It will enqueue a FIN, which can only be received by the peer as end of stream after receiving all pending data.

However as a general rule you should call out.close() , to ensure any data buffered in out gets flushed, in case out was a buffered stream, rather than socket.close() , which doesn't care about whatever buffered streams may have been wrapped around its output stream.