android - With a non-blocking SocketChannel, is the affiliated Socket blocking? -

i'm developing android app, trying non-blocking write 1 thread on socket, while doing blocking read on thread. i'm looking through socketchannel docs , trying figure out configureblocking does. specifically, if have non-blocking socketchannel, , access affiliated socket socketchannel.socket(), socket non-blocking in way? or blocking?

in other words, can effect of 1 blocking direction , 1 non-blocking direction having non-blocking socketchannel non-blocking direction, , using affiliated socket other direction?

if socket has associated socketchannel, cannot directly read it's inputstream. you'll illegalblockingmodeexception. see here.

you can block on non-blocking socketchannels registering them selector , using select() or select(long timeout). methods block until registered channel ready (or timeout expired).

the channel still non-blocking threads not using selector.

modified example here:

selector selector = selector.open(); channel.configureblocking(false);  // register op_read: interested in reading channel channel.register(selector, selectionkey.op_read);  while (true) {   int readychannels = selector.select(); // 1 blocks...    // safety net if selector awoke other means   if (readychannels == 0) continue;    set<selectionkey> selectedkeys = selector.selectedkeys();   iterator<selectionkey> keyiterator = selectedkeys.iterator();    while (keyiterator.hasnext()) {     selectionkey key = keyiterator.next();      keyiterator.remove();      if (!key.isvalid()) {       continue;     } else if (key.isacceptable()) {         // connection accepted serversocketchannel.     } else if (key.isconnectable()) {         // connection established remote server.     } else if (key.isreadable()) {         // channel ready reading     } else if (key.iswritable()) {         // channel ready writing     }   } }