/*!
Scans an interface and enumerates all baos devices.
It sends a search request as outlined in the BAOS 1.2 protocol
documentation and waits for the responses. There are lots of
magic numbers here and hard-coded offsets... See the spec
for more information on what is happening here...
We implement a receive timeout, and keep receiving until this
timeout elapses. If this timeout is too fast, increase it to 500
or 1000 for example.
*/
void BaosIpEnumerator::scanInterface(const NetworkInterface& networkInterface)
{
poco_information(LOGGER(),
format("Search devices on interface: %s (%s)",
networkInterface.displayName(),
networkInterface.address().toString()));
try
{
// initialize socket
MulticastSocket socket;
socket.bind(SocketAddress(networkInterface.address(), 0));
socket.setTimeToLive(DefaultMulticastTTL);
// builds and sends a SEARCH_REQUEST to the socket
sendSearchRequestFrame(socket);
// wait for SEARCH_RESPONSES and collect it
waitForSearchResponseFrames(socket);
}
catch (Poco::Exception& e)
{
poco_warning(LOGGER(), format("... search failed with error: %s", e.displayText()));
}
}
bool HTTPMUSocket::send(const std::string &msg, const std::string &bindAddr, int bindPort) {
MulticastSocket msock;
if ((0 < bindAddr.length()) && (0 < bindPort))
msock.bind(bindPort, bindAddr);
DatagramPacket dgmPacket(msg, &m_ssdpMultiGroup);
// Thnaks for Tho Beisch (11/09/04)
msock.setTimeToLive(4);
msock.send(&dgmPacket);
return true;
}
