public void run() {
System.out.println("Server started ...");
System.out.println("Server listening on port: " + port);
// 监听
while (true) {
try {
int num = 0;
num = selector.select();
if (num > 0) {
Set selectedKeys = selector.selectedKeys();
Iterator it = selectedKeys.iterator();
while (it.hasNext()) {
SelectionKey key = (SelectionKey) it.next();
it.remove();
// 处理IO事件
if ((key.readyOps() & SelectionKey.OP_ACCEPT) == SelectionKey.OP_ACCEPT) {
// Accept the new connection
ServerSocketChannel ssc = (ServerSocketChannel) key.channel();
notifier.fireOnAccept();
SocketChannel sc = ssc.accept();
sc.configureBlocking(false);
// 触发接受连接事件
Request request = new Request(sc);
notifier.fireOnAccepted(request);
// 注册读操作,以进行下一步的读操作
sc.register(selector, SelectionKey.OP_READ, request);
} else if ((key.readyOps() & SelectionKey.OP_READ) == SelectionKey.OP_READ) {
Reader.processRequest(key); // 提交读服务线程读取客户端数据
key.cancel();
} else if ((key.readyOps() & SelectionKey.OP_WRITE) == SelectionKey.OP_WRITE) {
Writer.processRequest(key); // 提交写服务线程向客户端发送回应数据
key.cancel();
}
}
} else {
addRegister(); // 在Selector中注册新的写通道
}
} catch (Exception e) {
notifier.fireOnError("Error occured in Server: " + e.getMessage());
continue;
}
}
}
