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Workaround for VPN reporting metered connection

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This commit is contained in:
M66B
2018-12-07 09:25:57 +01:00
parent f64b66179c
commit 1d99a40216
3 changed files with 120 additions and 28 deletions
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92
app/src/main/java/eu/faircode/email/Helper.java
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@@ -30,6 +30,9 @@ import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.res.TypedArray;
import android.net.ConnectivityManager;
import android.net.Network;
import android.net.NetworkCapabilities;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
@@ -291,6 +294,95 @@ public class Helper {
return filename.substring(index + 1);
}
static Boolean isMetered(Context context) {
ConnectivityManager cm = context.getSystemService(ConnectivityManager.class);
Network active = cm.getActiveNetwork();
if (active == null) {
Log.i(Helper.TAG, "isMetered: no active network");
return null;
}
NetworkInfo ni = cm.getNetworkInfo(active);
if (ni == null) {
Log.i(Helper.TAG, "isMetered: active no info");
return null;
}
Log.i(Helper.TAG, "isMetered: active info=" + ni);
if (!ni.isConnected()) {
Log.i(Helper.TAG, "isMetered: active not connected");
return null;
}
NetworkCapabilities caps = cm.getNetworkCapabilities(active);
if (caps == null) {
Log.i(Helper.TAG, "isMetered: active no caps");
return null;
}
Log.i(Helper.TAG, "isMetered: active caps=" + caps);
boolean unmetered = caps.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED);
if (unmetered) {
Log.i(Helper.TAG, "isMetered: active unmetered");
return false;
}
if (caps.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VPN)) {
Log.i(Helper.TAG, "isMetered: active metered");
return true;
}
// VPN: evaluate underlying networks
Network[] networks = cm.getAllNetworks();
if (networks == null) {
Log.i(Helper.TAG, "isMetered: no underlying networks");
return null;
}
boolean connected = false;
for (Network network : networks) {
ni = cm.getNetworkInfo(network);
if (ni == null) {
Log.i(Helper.TAG, "isMetered: no underlying info");
return null;
}
Log.i(Helper.TAG, "isMetered: underlying info=" + ni);
caps = cm.getNetworkCapabilities(network);
if (caps == null) {
Log.i(Helper.TAG, "isMetered: no underlying caps");
return null;
}
if (caps.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VPN)) {
if (ni.isConnected()) {
connected = true;
Log.i(Helper.TAG, "isMetered: underlying is connected");
if (caps.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED)) {
Log.i(Helper.TAG, "isMetered: underlying is unmetered");
return false;
}
} else
Log.i(Helper.TAG, "isMetered: underlying is disconnected");
} else
Log.i(Helper.TAG, "isMetered: underlying is VPN");
}
if (!connected) {
Log.i(Helper.TAG, "isMetered: underlying disconnected");
return null;
}
Log.i(Helper.TAG, "isMetered: underlying is metered");
return true;
}
static void connect(Context context, IMAPStore istore, EntityAccount account) throws MessagingException {
try {
istore.connect(account.host, account.port, account.user, account.password);