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Added workaround for DNS-reslver and fix for unmetered networks. (#22)

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* Changed app icon from default to Yggdrasil leaf.

* Added workaround for DNS-reslver and fix for unmetered networks.
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Revertron 2022-10-28 14:17:55 +02:00 • committed by GitHub
parent 796096b9d8
commit 8e74ea8ca7
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1 changed files with 16 additions and 2 deletions
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18
app/src/main/java/eu/neilalexander/yggdrasil/PacketTunnelProvider.kt
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@ -77,11 +77,25 @@ class PacketTunnelProvider: VpnService() {
var builder = Builder()
.addAddress(address, 7)
.addRoute("200::", 7)
.allowBypass()
// We do this to trick the DNS-resolver into thinking that we have "regular" IPv6,
// and therefore we need to resolve AAAA DNS-records.
// See: https://android.googlesource.com/platform/bionic/+/refs/heads/master/libc/dns/net/getaddrinfo.c#1935
// and: https://android.googlesource.com/platform/bionic/+/refs/heads/master/libc/dns/net/getaddrinfo.c#365
// If we don't do this the DNS-resolver just doesn't do DNS-requests with record type AAAA,
// and we can't use DNS with Yggdrasil addresses.
.addRoute("2000::", 128)
.allowFamily(OsConstants.AF_INET)
.allowBypass()
.setBlocking(true)
.setMtu(yggdrasil.mtu.toInt())
.setSession("Yggdrasil")
// On Android API 29+ apps can opt-in/out to using metered networks.
// If we don't set metered status of VPN it is considered as metered.
// If we set it to false, then it will inherit this status from underlying network.
// See: https://developer.android.com/reference/android/net/VpnService.Builder#setMetered(boolean)
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.Q) {
builder.setMetered(false)
}
parcel = builder.establish()
val parcel = parcel
@ -170,7 +184,7 @@ class PacketTunnelProvider: VpnService() {
}
try {
Thread.sleep(1000)
} catch (e: java.lang.InterruptedException) {
} catch (e: InterruptedException) {
return
}
}