public void testBasicWorkingGetNeighborsQuery() throws Exception {
NetlinkSocket s = new NetlinkSocket(OsConstants.NETLINK_ROUTE);
assertNotNull(s);
s.connectToKernel();
NetlinkSocketAddress localAddr = s.getLocalAddress();
assertNotNull(localAddr);
assertEquals(0, localAddr.getGroupsMask());
assertTrue(0 != localAddr.getPortId());
final int TEST_SEQNO = 5;
final byte[] request = RtNetlinkNeighborMessage.newGetNeighborsRequest(TEST_SEQNO);
assertNotNull(request);
final long TIMEOUT = 500;
assertTrue(s.sendMessage(request, 0, request.length, TIMEOUT));
int neighMessageCount = 0;
int doneMessageCount = 0;
while (doneMessageCount == 0) {
ByteBuffer response = null;
response = s.recvMessage(TIMEOUT);
assertNotNull(response);
assertTrue(StructNlMsgHdr.STRUCT_SIZE <= response.limit());
assertEquals(0, response.position());
assertEquals(ByteOrder.nativeOrder(), response.order());
// Verify the messages at least appears minimally reasonable.
while (response.remaining() > 0) {
final NetlinkMessage msg = NetlinkMessage.parse(response);
assertNotNull(msg);
final StructNlMsgHdr hdr = msg.getHeader();
assertNotNull(hdr);
if (hdr.nlmsg_type == NetlinkConstants.NLMSG_DONE) {
doneMessageCount++;
continue;
}
assertEquals(NetlinkConstants.RTM_NEWNEIGH, hdr.nlmsg_type);
assertTrue(msg instanceof RtNetlinkNeighborMessage);
assertTrue((hdr.nlmsg_flags & StructNlMsgHdr.NLM_F_MULTI) != 0);
assertEquals(TEST_SEQNO, hdr.nlmsg_seq);
assertEquals(localAddr.getPortId(), hdr.nlmsg_pid);
neighMessageCount++;
}
}
assertEquals(1, doneMessageCount);
// TODO: make sure this test passes sanely in airplane mode.
assertTrue(neighMessageCount > 0);
s.close();
}
public void testRepeatedCloseCallsAreQuiet() throws Exception {
// Create a working NetlinkSocket.
NetlinkSocket s = new NetlinkSocket(OsConstants.NETLINK_ROUTE);
assertNotNull(s);
s.connectToKernel();
NetlinkSocketAddress localAddr = s.getLocalAddress();
assertNotNull(localAddr);
assertEquals(0, localAddr.getGroupsMask());
assertTrue(0 != localAddr.getPortId());
// Close once.
s.close();
// Test that it is closed.
boolean expectedErrorSeen = false;
try {
localAddr = s.getLocalAddress();
} catch (ErrnoException e) {
expectedErrorSeen = true;
}
assertTrue(expectedErrorSeen);
// Close once more.
s.close();
}
