/// <summary>
/// Stops browsing the SSDP remote service.
/// </summary>
/// <since_tizen> 4 </since_tizen>
/// <privilege>http://tizen.org/privilege/internet</privilege>
/// <feature>http://tizen.org/feature/network.service_discovery.ssdp</feature>
/// <exception cref="InvalidOperationException">Thrown when any other error occured.</exception>
/// <exception cref="NotSupportedException">Thrown when SSDP is not supported.</exception>
/// <exception cref="UnauthorizedAccessException">Thrown when the permission is denied.</exception>
public void StopDiscovery()
{
int ret = Interop.Nsd.Ssdp.StopBrowsing(_browserHandle);
if (ret != (int)SsdpError.None)
{
Log.Error(Globals.LogTag, "Failed to stop discovery of Ssdp remote service, Error - " + (SsdpError)ret);
NsdErrorFactory.ThrowSsdpException(ret);
}
}
/// <summary>
/// Deregisters the DNS-SD local service.
/// </summary>
/// <remarks>
/// A local service registered using RegisterService() must be passed.
/// </remarks>
/// <since_tizen> 4 </since_tizen>
/// <feature>http://tizen.org/feature/network.service_discovery.dnssd</feature>
/// <exception cref="InvalidOperationException">Thrown when any other error occurred.</exception>
/// <exception cref="NotSupportedException">Thrown when DNS-SD is not supported.</exception>
public void DeregisterService()
{
int ret = Interop.Nsd.Dnssd.DeregisterService(_serviceHandle);
if (ret != (int)DnssdError.None)
{
Log.Error(Globals.LogTag, "Failed to deregister the Dnssd local service, Error: " + (DnssdError)ret);
NsdErrorFactory.ThrowDnssdException(ret);
}
}
private void GetTxtRecord(out ushort length, out byte[] value)
{
int ret = Interop.Nsd.Dnssd.GetAllTxtRecord(_serviceHandle, out length, out value);
if (ret != (int)DnssdError.None)
{
Log.Error(Globals.LogTag, "Failed to get the TXT record, Error: " + (DnssdError)ret);
NsdErrorFactory.ThrowDnssdException(ret);
}
}
internal static void SsdpInitialize()
{
int ret = Interop.Nsd.Ssdp.Initialize();
if (ret != (int)SsdpError.None)
{
Log.Error(LogTag, "Failed to initialize Ssdp, Error - " + (SsdpError)ret);
NsdErrorFactory.ThrowSsdpException(ret);
}
}
internal static void DnssdInitialize()
{
int ret = Interop.Nsd.Dnssd.Initialize();
if (ret != (int)DnssdError.None)
{
Log.Error(LogTag, "Failed to initialize Dnssd, Error - " + (DnssdError)ret);
NsdErrorFactory.ThrowDnssdException(ret);
}
}
/// <summary>
/// Removes the TXT record.
/// </summary>
/// <since_tizen> 4 </since_tizen>
/// <param name="key">The key of the TXT record to be removed.</param>
/// <feature>http://tizen.org/feature/network.service_discovery.dnssd</feature>
/// <exception cref="NotSupportedException">Thrown when DNS-SD is not supported.</exception>
/// <exception cref="ArgumentException">Thrown when the value of the key is null.</exception>
/// <exception cref="InvalidOperationException">Thrown when any other error occurred.</exception>
public void RemoveTXTRecord(string key)
{
int ret = Interop.Nsd.Dnssd.RemoveTxtRecord(_serviceHandle, key);
if (ret != (int)DnssdError.None)
{
Log.Error(Globals.LogTag, "Failed to remove the TXT record, Error: " + (DnssdError)ret);
NsdErrorFactory.ThrowDnssdException(ret);
}
}
/// <summary>
/// A public constructor for DnssdBrowser class to create a DnssdBrowser instance for the given service type.
/// </summary>
/// <param name="serviceType">The DNSSD service type</param>
/// <since_tizen> 4 </since_tizen>
/// <feature>http://tizen.org/feature/network.service_discovery.dnssd</feature>
/// <exception cref="ArgumentException">Thrown when serviceType is null.</exception>
/// <exception cref="NotSupportedException">Thrown when DNSSD is not supported.</exception>
public DnssdBrowser(string serviceType)
{
DnssdInitializer dnssdInit = Globals.s_threadDns.Value;
Log.Info(Globals.LogTag, "Initialize ThreadLocal<DnssdInitializer> instance = " + dnssdInit);
if (serviceType == null)
{
Log.Debug(Globals.LogTag, "serviceType is null");
NsdErrorFactory.ThrowDnssdException((int)DnssdError.InvalidParameter);
}
_serviceType = serviceType;
}
internal void SsdpInitializeCreateService()
{
SsdpInitializer ssdpInit = Globals.s_threadSsd.Value;
Log.Info(Globals.LogTag, "Initialize ThreadLocal<SsdpInitializer> instance = " + ssdpInit);
int ret = Interop.Nsd.Ssdp.CreateService(_target, out _serviceHandle);
if (ret != (int)SsdpError.None)
{
Log.Error(Globals.LogTag, "Failed to create a local Ssdp service handle, Error - " + (SsdpError)ret);
NsdErrorFactory.ThrowSsdpException(ret);
}
}
/// <summary>
/// A public constructor for the SsdpBrowser class to create a SsdpBrowser instance for the given target.
/// </summary>
/// <since_tizen> 4 </since_tizen>
/// <param name="target">The target to browse for the service.</param>
/// <feature>http://tizen.org/feature/network.service_discovery.ssdp</feature>
/// <exception cref="ArgumentException">Thrown when the target is null.</exception>
/// <exception cref="NotSupportedException">Thrown when SSDP is not supported.</exception>
public SsdpBrowser(string target)
{
SsdpInitializer ssdpInit = Globals.s_threadSsd.Value;
Log.Info(Globals.LogTag, "Initialize ThreadLocal<SsdpInitializer> instance = " + ssdpInit);
if (target == null)
{
Log.Debug(Globals.LogTag, "target is null");
NsdErrorFactory.ThrowSsdpException((int)SsdpError.InvalidParameter);
}
_target = target;
}
internal void DnssdInitializeCreateService()
{
DnssdInitializer dnssdInit = Globals.s_threadDns.Value;
Log.Info(Globals.LogTag, "Initialize ThreadLocal<DnssdInitializer> instance = " + dnssdInit);
int ret = Interop.Nsd.Dnssd.CreateService(_serviceType, out _serviceHandle);
if (ret != (int)DnssdError.None)
{
Log.Error(Globals.LogTag, "Failed to create a local Dnssd service handle, Error - " + (DnssdError)ret);
NsdErrorFactory.ThrowDnssdException(ret);
}
}
/// <summary>
/// Returns raw TXT records.
/// </summary>
/// <returns>Returns empty bytes array in case TXT record has not been set, else returns raw TXT record.</returns>
/// <since_tizen> 9 </since_tizen>
/// <feature>http://tizen.org/feature/network.service_discovery.dnssd</feature>
/// <exception cref="NotSupportedException">Thrown when DNS-SD is not supported.</exception>
/// <exception cref="InvalidOperationException">Thrown when any other error occurred.</exception>
public byte[] GetRawTXTRecords()
{
int ret = Interop.Nsd.Dnssd.GetAllTxtRecord(_serviceHandle, out ushort length, out IntPtr data);
if (ret != (int)DnssdError.None)
{
Log.Error(Globals.LogTag, "Failed to get the TXT record, Error: " + (DnssdError)ret);
NsdErrorFactory.ThrowDnssdException(ret);
}
byte[] value = Array.Empty <byte>();
if (length > 0)
{
value = new byte[length];
Marshal.Copy(data, value, 0, length);
Interop.Libc.Free(data);
}
return(value);
}
/// <summary>
/// Registers the SSDP local service for publishing.
/// </summary>
/// <remarks>
/// A service created locally must be passed.
/// URL and USN of the service must be set before the RegisterService is called.
/// </remarks>
/// <since_tizen> 4 </since_tizen>
/// <privilege>http://tizen.org/privilege/internet</privilege>
/// <feature>http://tizen.org/feature/network.service_discovery.ssdp</feature>
/// <exception cref="InvalidOperationException">Thrown when any other error occurred.</exception>
/// <exception cref="NotSupportedException">Thrown when the SSDP is not supported.</exception>
/// <exception cref="UnauthorizedAccessException">Thrown when the permission is denied.</exception>
public void RegisterService()
{
if (!Globals.s_threadSsd.IsValueCreated)
{
SsdpInitializeCreateService();
}
_serviceRegisteredCallback = (SsdpError result, uint service, IntPtr userData) =>
{
};
int ret = Interop.Nsd.Ssdp.RegisterService(_serviceHandle, _serviceRegisteredCallback, IntPtr.Zero);
if (ret != (int)SsdpError.None)
{
Log.Error(Globals.LogTag, "Failed to register the Ssdp local service, Error: " + (SsdpError)ret);
NsdErrorFactory.ThrowSsdpException(ret);
}
}
/// <summary>
/// Adds the TXT record.
/// </summary>
/// <remarks>
/// TXT record should be added after registering the local service using RegisterService().
/// </remarks>
/// <since_tizen> 4 </since_tizen>
/// <param name="key">The key of the TXT record. It must be a null-terminated string with 9 characters or fewer excluding null. It is case insensitive.</param>
/// <param name="value">The value of the TXT record. If null, then "key" will be added with no value. If non-null but the value_length is zero, then "key=" will be added with an empty value.</param>
/// <feature>http://tizen.org/feature/network.service_discovery.dnssd</feature>
/// <exception cref="NotSupportedException">Thrown when DNS-SD is not supported.</exception>
/// <exception cref="ArgumentException">Thrown when the value of the key is null.</exception>
/// <exception cref="InvalidOperationException">Thrown when any other error occurred.</exception>
public void AddTXTRecord(string key, string value)
{
byte[] byteValue = Encoding.UTF8.GetBytes(value);
ushort length = Convert.ToUInt16(byteValue.Length);
int ret = Interop.Nsd.Dnssd.AddTxtRecord(_serviceHandle, key, length, byteValue);
if (ret != (int)DnssdError.None)
{
Log.Error(Globals.LogTag, "Failed to add the TXT record, Error: " + (DnssdError)ret);
NsdErrorFactory.ThrowDnssdException(ret);
}
byte[] txtValue = GetRawTXTRecords();
ret = Interop.Nsd.Dnssd.SetRecord(_serviceHandle, _dnsRecordtype, (ushort)txtValue.Length, txtValue);
if (ret != (int)DnssdError.None)
{
Log.Error(Globals.LogTag, "Failed to set the DNS resource record, Error: " + (DnssdError)ret);
NsdErrorFactory.ThrowDnssdException(ret);
}
}
/// <summary>
/// Starts browsing the DNSSD remote service.
/// </summary>
/// <remarks>
/// If there are any services available, ServiceFound event will be invoked.
/// Application will keep browsing for available/unavailable services until it calls StopDiscovery().
/// </remarks>
/// <since_tizen> 4 </since_tizen>
/// <privilege>http://tizen.org/privilege/internet</privilege>
/// <feature>http://tizen.org/feature/network.service_discovery.dnssd</feature>
/// <exception cref="InvalidOperationException">Thrown when any other error occurred.</exception>
/// <exception cref="NotSupportedException">Thrown when DNSSD is not supported.</exception>
/// <exception cref="UnauthorizedAccessException">Thrown when permission is denied.</exception>
public void StartDiscovery()
{
DnssdInitializer dnssdInit = Globals.s_threadDns.Value;
Log.Info(Globals.LogTag, "Initialize ThreadLocal<DnssdInitializer> instance = " + dnssdInit);
_serviceFoundCallback = (DnssdServiceState state, uint service, IntPtr userData) =>
{
if (_serviceFound != null)
{
Log.Info(Globals.LogTag, "Inside Service found callback");
DnssdService dnsService = new DnssdService(service);
_serviceFound(null, new DnssdServiceFoundEventArgs(state, dnsService));
}
};
int ret = Interop.Nsd.Dnssd.StartBrowsing(_serviceType, out _browserHandle, _serviceFoundCallback, IntPtr.Zero);
if (ret != (int)DnssdError.None)
{
Log.Error(Globals.LogTag, "Failed to discover Dnssd remote service, Error - " + (DnssdError)ret);
NsdErrorFactory.ThrowDnssdException(ret);
}
}
/// <summary>
/// Registers the DNS-SD local service for publishing.
/// </summary>
/// Name of the service must be set.
/// <since_tizen> 4 </since_tizen>
/// <privilege>http://tizen.org/privilege/internet</privilege>
/// <feature>http://tizen.org/feature/network.service_discovery.dnssd</feature>
/// <exception cref="InvalidOperationException">Thrown when any other error occurred.</exception>
/// <exception cref="NotSupportedException">Thrown when DNS-SD is not supported.</exception>
/// <exception cref="UnauthorizedAccessException">Thrown when the permission is denied.</exception>
public void RegisterService()
{
if (!Globals.s_threadDns.IsValueCreated)
{
DnssdInitializeCreateService();
}
_serviceRegisteredCallback = (DnssdError result, uint service, IntPtr userData) =>
{
if (result != DnssdError.None)
{
Log.Error(Globals.LogTag, "Failed to finish the registration of Dnssd local service, Error: " + result);
NsdErrorFactory.ThrowDnssdException((int)result);
}
};
int ret = Interop.Nsd.Dnssd.RegisterService(_serviceHandle, _serviceRegisteredCallback, IntPtr.Zero);
if (ret != (int)DnssdError.None)
{
Log.Error(Globals.LogTag, "Failed to register the Dnssd local service, Error: " + (DnssdError)ret);
NsdErrorFactory.ThrowDnssdException(ret);
}
}
/// <summary>
/// Removes the TXT record.
/// </summary>
/// <since_tizen> 4 </since_tizen>
/// <param name="key">The key of the TXT record to be removed.</param>
/// <feature>http://tizen.org/feature/network.service_discovery.dnssd</feature>
/// <exception cref="NotSupportedException">Thrown when DNS-SD is not supported.</exception>
/// <exception cref="ArgumentException">Thrown when the value of the key is null.</exception>
/// <exception cref="InvalidOperationException">Thrown when any other error occurred.</exception>
public void RemoveTXTRecord(string key)
{
int ret = Interop.Nsd.Dnssd.RemoveTxtRecord(_serviceHandle, key);
if (ret != (int)DnssdError.None)
{
Log.Error(Globals.LogTag, "Failed to remove the TXT record, Error: " + (DnssdError)ret);
NsdErrorFactory.ThrowDnssdException(ret);
}
byte[] txtValue;
ushort txtLength;
GetTxtRecord(out txtLength, out txtValue);
if (txtLength == 0)
{
ret = Interop.Nsd.Dnssd.UnsetRecord(_serviceHandle, _dnsRecordtype);
if (ret != (int)DnssdError.None)
{
Log.Error(Globals.LogTag, "Failed to unset the DNS resource record, Error: " + (DnssdError)ret);
NsdErrorFactory.ThrowDnssdException(ret);
}
}
}
/// <summary>
/// Starts browsing the SSDP remote service.
/// </summary>
/// <remarks>
/// If there are any services available, the ServiceFound event will be invoked.
/// The application will keep browsing for the available or unavailable services until it calls StopDiscovery().
/// </remarks>
/// <since_tizen> 4 </since_tizen>
/// <feature>http://tizen.org/feature/network.service_discovery.ssdp</feature>
/// <exception cref="InvalidOperationException">Thrown when any other error occured.</exception>
/// <exception cref="NotSupportedException">Thrown when SSDP is not supported.</exception>
public void StartDiscovery()
{
SsdpInitializer ssdpInit = Globals.s_threadSsd.Value;
Log.Info(Globals.LogTag, "Initialize ThreadLocal<SsdpInitializer> instance = " + ssdpInit);
_serviceFoundCallback = (SsdpServiceState state, uint service, IntPtr userData) =>
{
if (_serviceFound != null)
{
Log.Info(Globals.LogTag, "Inside Service found callback");
SsdpService ssdpService = new SsdpService(service);
_serviceFound(null, new SsdpServiceFoundEventArgs(state, ssdpService));
}
};
int ret = Interop.Nsd.Ssdp.StartBrowsing(_target, out _browserHandle, _serviceFoundCallback, IntPtr.Zero);
if (ret != (int)SsdpError.None)
{
Log.Error(Globals.LogTag, "Failed to discover Ssdp remote service, Error - " + (SsdpError)ret);
NsdErrorFactory.ThrowSsdpException(ret);
}
}
