public static void ExecuteNetworkCommand(ExecuteNetworkDelegate command, object connManager)
{
#if Android
if (Android.OS.Build.VERSION.SdkInt < Android.OS.BuildVersionCodes.Lollipop)
{
command();
return;
}
Android.Net.Network bindNetwork = null;
Android.Net.ConnectivityManager connectivityManager = connManager as Android.Net.ConnectivityManager;
// ReSharper disable once UseNullPropagation
if (connectivityManager != null)
{
Android.Net.Network[] networks = connectivityManager.GetAllNetworks();
if (networks != null)
{
foreach (Android.Net.Network network in networks)
{
Android.Net.NetworkInfo networkInfo = connectivityManager.GetNetworkInfo(network);
Android.Net.NetworkCapabilities networkCapabilities = connectivityManager.GetNetworkCapabilities(network);
// HasTransport support started also with Lollipop
if (networkInfo != null && networkInfo.IsConnected &&
networkCapabilities != null && networkCapabilities.HasTransport(Android.Net.TransportType.Wifi))
{
bindNetwork = network;
break;
}
}
}
}
if (Android.OS.Build.VERSION.SdkInt < Android.OS.BuildVersionCodes.M)
{
#pragma warning disable 618
Android.Net.Network defaultNetwork = Android.Net.ConnectivityManager.ProcessDefaultNetwork;
try
{
Android.Net.ConnectivityManager.SetProcessDefaultNetwork(bindNetwork);
command();
}
finally
{
Android.Net.ConnectivityManager.SetProcessDefaultNetwork(defaultNetwork);
}
#pragma warning restore 618
return;
}
Android.Net.Network boundNetwork = connectivityManager?.BoundNetworkForProcess;
try
{
connectivityManager?.BindProcessToNetwork(bindNetwork);
command();
}
finally
{
connectivityManager?.BindProcessToNetwork(boundNetwork);
}
#else
command();
#endif
}
public static void ExecuteNetworkCommand(ExecuteNetworkDelegate command, IPAddress ipAddr, object networkDataObject)
{
#if Android
if (Android.OS.Build.VERSION.SdkInt < Android.OS.BuildVersionCodes.Lollipop)
{
command();
return;
}
Android.Net.Network bindNetwork = null;
NetworkData networkData = networkDataObject as NetworkData;
Android.Net.ConnectivityManager connectivityManager = networkData?.ConnectivityManager;
Java.Net.InetAddress inetAddr = Java.Net.InetAddress.GetByName(ipAddr.ToString());
// ReSharper disable once UseNullPropagation
if (connectivityManager != null && inetAddr is Java.Net.Inet4Address inet4Addr)
{
System.Collections.Generic.List <Android.Net.Network> networkList = new System.Collections.Generic.List <Android.Net.Network>();
lock (networkData.LockObject)
{
networkList.AddRange(networkData.ActiveWifiNetworks);
networkList.AddRange(networkData.ActiveEthernetNetworks);
}
foreach (Android.Net.Network network in networkList)
{
Android.Net.NetworkCapabilities networkCapabilities = connectivityManager.GetNetworkCapabilities(network);
// HasTransport support started also with Lollipop
if (networkCapabilities != null)
{
bool linkValid = false;
Android.Net.LinkProperties linkProperties = connectivityManager.GetLinkProperties(network);
if (linkProperties != null)
{
foreach (Android.Net.LinkAddress linkAddress in linkProperties.LinkAddresses)
{
if (linkAddress.Address is Java.Net.Inet4Address linkInet4Address)
{
Java.Net.NetworkInterface networkInterface = Java.Net.NetworkInterface.GetByInetAddress(linkInet4Address);
if (networkInterface != null && networkInterface.IsUp &&
(linkInet4Address.IsSiteLocalAddress || linkInet4Address.IsLinkLocalAddress))
{
foreach (Java.Net.InterfaceAddress interfaceAddress in networkInterface.InterfaceAddresses)
{
if (interfaceAddress.Address is Java.Net.Inet4Address)
{
byte[] linkAddrBytes = interfaceAddress.Address.GetAddress();
byte[] inet4AddrBytes = inet4Addr.GetAddress();
if (linkAddrBytes.Length == inet4AddrBytes.Length)
{
for (int bit = interfaceAddress.NetworkPrefixLength; bit < linkAddrBytes.Length * 8; bit++)
{
int index = bit >> 3;
byte mask = (byte)(0x80 >> (bit & 0x07));
linkAddrBytes[index] |= mask;
inet4AddrBytes[index] |= mask;
}
}
if (linkAddrBytes.SequenceEqual(inet4AddrBytes))
{
linkValid = true;
break;
}
}
}
if (linkValid)
{
break;
}
}
}
}
}
if (linkValid)
{
bindNetwork = network;
break;
}
}
}
}
if (Android.OS.Build.VERSION.SdkInt < Android.OS.BuildVersionCodes.M)
{
#pragma warning disable 618
Android.Net.Network defaultNetwork = Android.Net.ConnectivityManager.ProcessDefaultNetwork;
try
{
Android.Net.ConnectivityManager.SetProcessDefaultNetwork(bindNetwork);
command();
}
finally
{
Android.Net.ConnectivityManager.SetProcessDefaultNetwork(defaultNetwork);
}
#pragma warning restore 618
return;
}
Android.Net.Network boundNetwork = connectivityManager?.BoundNetworkForProcess;
try
{
connectivityManager?.BindProcessToNetwork(bindNetwork);
command();
}
finally
{
connectivityManager?.BindProcessToNetwork(boundNetwork);
}
#else
command();
#endif
}
public static void ExecuteNetworkCommand(ExecuteNetworkDelegate command, object connManager, bool checkEthernet = false)
{
#if Android
if (Android.OS.Build.VERSION.SdkInt < Android.OS.BuildVersionCodes.Lollipop)
{
command();
return;
}
Android.Net.Network bindNetwork = null;
Android.Net.ConnectivityManager connectivityManager = connManager as Android.Net.ConnectivityManager;
// ReSharper disable once UseNullPropagation
if (connectivityManager != null)
{
Android.Net.Network[] networks = connectivityManager.GetAllNetworks();
if (networks != null)
{
foreach (Android.Net.Network network in networks)
{
Android.Net.NetworkInfo networkInfo = connectivityManager.GetNetworkInfo(network);
Android.Net.NetworkCapabilities networkCapabilities = connectivityManager.GetNetworkCapabilities(network);
// HasTransport support started also with Lollipop
if (networkInfo != null && networkInfo.IsConnected && networkCapabilities != null)
{
bool linkValid = false;
bool autoIp = false;
Android.Net.LinkProperties linkProperties = connectivityManager.GetLinkProperties(network);
foreach (Android.Net.LinkAddress linkAddress in linkProperties.LinkAddresses)
{
if (linkAddress.Address is Java.Net.Inet4Address inet4Address)
{
if (inet4Address.IsSiteLocalAddress || inet4Address.IsLinkLocalAddress)
{
linkValid = true;
autoIp = inet4Address.IsLinkLocalAddress;
break;
}
}
}
if (linkValid)
{
if (networkCapabilities.HasTransport(Android.Net.TransportType.Wifi))
{
bindNetwork = network;
}
if (checkEthernet && networkCapabilities.HasTransport(Android.Net.TransportType.Ethernet))
{
if (autoIp)
{
// prefer Ethernet auto ip
bindNetwork = network;
break;
}
if (bindNetwork == null)
{
// prefer Wifi
bindNetwork = network;
}
}
}
}
}
}
}
if (Android.OS.Build.VERSION.SdkInt < Android.OS.BuildVersionCodes.M)
{
#pragma warning disable 618
Android.Net.Network defaultNetwork = Android.Net.ConnectivityManager.ProcessDefaultNetwork;
try
{
Android.Net.ConnectivityManager.SetProcessDefaultNetwork(bindNetwork);
command();
}
finally
{
Android.Net.ConnectivityManager.SetProcessDefaultNetwork(defaultNetwork);
}
#pragma warning restore 618
return;
}
Android.Net.Network boundNetwork = connectivityManager?.BoundNetworkForProcess;
try
{
connectivityManager?.BindProcessToNetwork(bindNetwork);
command();
}
finally
{
connectivityManager?.BindProcessToNetwork(boundNetwork);
}
#else
command();
#endif
}
