/// <summary>
/// Interpret a received string from the udp sockets
/// </summary>
/// <param name="received_string">the body of the udp packet</param>
/// <param name="was_broadcasted">TRUE if it was received via broadcast</param>
private void InterpretReceivedString(string received_string, bool was_broadcasted)
{
string message = "Received a";
IPEndPoint received_from;
if (was_broadcasted)
{
message += " broadcasted unpnp string ";
message += "from :" + ((IPEndPoint)broadcast_receive_from_endpoint).Address.ToString();
message += ":" + ((IPEndPoint)broadcast_receive_from_endpoint).Port.ToString();
received_from = (IPEndPoint)broadcast_receive_from_endpoint;
}
else
{
message += "n unicasted unpnp string ";
message += "from :" + ((IPEndPoint)receive_from_endpoint).Address.ToString();
message += ":" + ((IPEndPoint)receive_from_endpoint).Port.ToString();
received_from = (IPEndPoint)receive_from_endpoint;
}
message += ": ";
/*
Console.WriteLine("");
Console.WriteLine(message);
Console.WriteLine(received_string);
Console.WriteLine("");
//Console.WriteLine("Header Lines:");
*/
//Console.WriteLine(received_string);
string[] seps = {"\r\n"};
string[] lines = received_string.Split(seps, StringSplitOptions.RemoveEmptyEntries);
string uuid = "";
string urn = "";
string server = "";
string location = "";
string usn = "";
string mx = "";
string st = "";
string nt = "";
string man = "";
bool discovery_request = false;
foreach (string line in lines)
{
//Console.WriteLine("line:" + line);
if (line.StartsWith("MX:", true, null))
{
mx = line.Substring("MX:".Length).Trim();
}
if (line.StartsWith("MAN:", true, null))
{
man = line.Substring("MAN:".Length).Trim();
}
if (line.StartsWith("NT:", true, null))
{
nt = line.Substring("NT:".Length).Trim();
}
if (line.StartsWith("ST:", true, null))
{
st = line.Substring("ST:".Length).Trim();
}
if (line == "M-SEARCH * HTTP/1.1")
{
discovery_request = true;
}
if (line.StartsWith("SERVER:", true, null))
{
server = line.Substring(8);
}
if (line.StartsWith("LOCATION:", true, null))
{
location = line.Substring(10);
}
if (line.StartsWith("USN:",true,null))
{
usn = line.Substring(5);
//Console.WriteLine("Found an Unique Service Name: " + usn);
//checking if it looks a router
int uuid_start = usn.IndexOf("uuid:");
int urn_start = usn.IndexOf("urn:");
if (uuid_start != -1)
{
uuid_start += 5;
int uuid_end = usn.Substring(uuid_start).IndexOf("::");
if (uuid_end != -1)
{
uuid = usn.Substring(uuid_start, uuid_end);
uuid = uuid.Trim();
}
}
if (urn_start != -1)
{
urn_start += 4;
//int urn_end = usn.Substring(urn_start).IndexOf(":");
//if (urn_end != -1)
//{
urn = usn.Substring(urn_start);
//urn = usn.Substring(urn_start, urn_end);
urn = urn.Trim();
//}
}
}
}
if (discovery_request)
{//received a discovery request
lock (discovery_request_lock)
{
//check header options
//and answer if needed
Console.WriteLine("checking local devices for service matching the search request: " + st);
//Console.WriteLine("searches for: " + st);
lock (local_devices_lock)
{
foreach (LocalDevice device in local_devices)
{
if (st.Equals("upnp:rootdevice", StringComparison.CurrentCultureIgnoreCase))
{
ReplyDevice(device, received_from);
Thread.Sleep(50);
}
else if(st.Equals("ssdp:all", StringComparison.CurrentCultureIgnoreCase))
{
ReplyDevice(device, received_from);
Thread.Sleep(50);
ReplyDeviceServices(device, received_from);
Thread.Sleep(50);
ReplyRootDevice(device, received_from);
Thread.Sleep(50);
ReplyRootDeviceV2(device, received_from);
Thread.Sleep(50);
}
else
{
foreach (SubDevice.Service service in device.RootDevice.Services)
{
//Console.WriteLine("comparing: "+st+" and urn:"+service.ServiceType);
if (st.Equals("urn:" + service.ServiceType, StringComparison.CurrentCultureIgnoreCase))
{
Console.WriteLine("found applicable device + service: " + device.RootDevice.FriendlyName);
//ReplyDevice(device, received_from);
//ReplyDeviceService(device, service, received_from);
//Thread.Sleep(100);
//device.LastAnnouncementTime = DateTime.Now;
device.LastAnnouncementTime = DateTime.MinValue; //force reannouncing if the device missed a reply
//ReplyDeviceServices(device, received_from);
//ReplyRootDevice(device, received_from);
//ReplyRootDeviceV2(device, received_from);
}
}
}
}
}
//TODO Add response discovery method
}
}
else if (urn != "" && uuid != "" && server != "" && location != "" && usn != "" && !discovery_request)
{//found a usable packet for a device urn compare
if (urn == "schemas-upnp-org:service:WANIPConnection:1") //TODO maybe change this to InternetGatewayDevice
{//we found a router
//check if its a new or to be updated entry
Device existing = GetDeviceByUUID(uuid);
if (existing != null)
{//we need to update a router entry
Router updated = (Router)existing;
}
else
{//we discovered a new router
Router r = new Router(usn, location, server, uuid);
devices.Add(r);
if (DeviceDiscovered != null)
DeviceDiscovered(r);
}
}
else if (urn == "schemas-upnp-org:device:MediaRenderer:1")
{//we found a media renderer
//check if its a new or to be updated entry
Device existing = GetDeviceByUUID(uuid);
if (existing != null)
{//we need to update a media renderer entry
MediaRenderer updated = (MediaRenderer)existing;
}
else
{//we discovered a new media renderer
MediaRenderer mr = new MediaRenderer(usn, location, server, uuid);
devices.Add(mr);
if (DeviceDiscovered != null)
DeviceDiscovered(mr);
}
}
else if (urn == "schemas-upnp-org:device:BinaryLight:1")
{//we found a binary light
//check if its a new or to be updated entry
Device existing = GetDeviceByUUID(uuid);
if (existing != null)
{//we need to update a binary light entry
BinaryLight updated = (BinaryLight)existing;
}
else
{//we discovered a binary light
BinaryLight bl = new BinaryLight(usn, location, server, uuid);
devices.Add(bl);
if (DeviceDiscovered != null)
DeviceDiscovered(bl);
}
}
}
//Console.WriteLine("");
//Console.WriteLine("-- End of Message --");
//Console.WriteLine("");
}
