public QueryRequest(ByteBuf buffer) {
super(buffer, kXR_query);
reqcode = buffer.getUnsignedShort(4);
fhandle = buffer.getInt(8);
int alen = buffer.getInt(20);
/* The protocol spec doesn't state anything about trailing zeros in args,
* however the xrdfs client sends zero terminated paths.
*/
args = NULL_CHARACTER.trimTrailingFrom(buffer.toString(24, alen, US_ASCII));
}
@Test(timeout = 1000)
public void a() {
ByteBuf buf = Unpooled.buffer(4);
buf.setInt(0, 1);
System.out.format("%08x%n", buf.getInt(0));
ByteBuf leBuf = buf.order(ByteOrder.LITTLE_ENDIAN);
// 打印出 '01000000'
System.out.format("%08x%n", leBuf.getInt(0));
assert buf != leBuf;
assert buf == buf.order(ByteOrder.BIG_ENDIAN);
}
@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
if (in.readableBytes() < 4 * Integer.SIZE / Byte.SIZE) {
return;
}
int numPayloads = in.getInt(in.readerIndex() + 3 * Integer.SIZE / Byte.SIZE);
int index = 4 * Integer.SIZE / Byte.SIZE;
for (int i = 0; i < numPayloads; i++) {
if (in.readableBytes() < index + Integer.SIZE / Byte.SIZE) {
return;
}
int size = in.getInt(in.readerIndex() + index);
index += Integer.SIZE / Byte.SIZE + size;
if (in.readableBytes() < index) {
return;
}
}
int sender = in.readInt();
int dest = in.readInt();
int msgType = in.readInt();
numPayloads = in.readInt();
Msg msg = new Msg(msgType);
msg.setSender(sender);
msg.setDest(dest);
for (int i = 0; i < numPayloads; i++) {
int size = in.readInt();
if (size > 0) {
ByteBuffer buffer = ByteBuffer.allocate(size);
in.readBytes(buffer);
buffer.rewind();
msg.addPayload(buffer);
} else {
msg.addPayload(null);
}
}
out.add(msg);
}
@Override
public int getInt(int index) {
return buf.getInt(index);
}
/**
* Returns the {@code int} at position {@code pos} in the Buffer.
*
* @throws IndexOutOfBoundsException if the specified {@code pos} is less than {@code 0} or {@code
* pos + 4} is greater than the length of the Buffer.
*/
public int getInt(int pos) {
return buffer.getInt(pos);
}
@Override
public int getInt(int var1) {
return a.getInt(var1);
}