From 140fb395dcb23a9d2fef24789796f5d985569a06 Mon Sep 17 00:00:00 2001 From: "Jason A. Donenfeld" Date: Tue, 17 Apr 2018 05:59:23 +0200 Subject: GoBackend: default MTU is 1280 This sucks, but it works with mobile networks. Later we can do something sophisticated like we do with wg-quick.c, but not now. Signed-off-by: Jason A. Donenfeld --- .../main/java/com/wireguard/android/backend/GoBackend.java | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'app/src') diff --git a/app/src/main/java/com/wireguard/android/backend/GoBackend.java b/app/src/main/java/com/wireguard/android/backend/GoBackend.java index 7b397f05..28ce7a5e 100644 --- a/app/src/main/java/com/wireguard/android/backend/GoBackend.java +++ b/app/src/main/java/com/wireguard/android/backend/GoBackend.java @@ -72,7 +72,7 @@ public final class GoBackend implements Backend { private static native void wgTurnOff(int handle); - private static native int wgTurnOn(String ifName, int tunFd, String settings); + private static native int wgTurnOn(String ifName, int tunFd, int mtu, String settings); @Override public Config applyConfig(final Tunnel tunnel, final Config config) throws Exception { @@ -244,12 +244,21 @@ public final class GoBackend implements Backend { } } + int mtu = -1; + try { + mtu = Integer.parseInt(config.getInterface().getMtu(), 10); + } catch (Exception e) { + } + if (mtu < 0) + mtu = 1280; + builder.setMtu(mtu); + builder.setBlocking(true); ParcelFileDescriptor tun = builder.establish(); if (tun == null) throw new Exception("Unable to create tun device"); - currentTunnelHandle = wgTurnOn(tunnel.getName(), tun.detachFd(), fmt.toString()); + currentTunnelHandle = wgTurnOn(tunnel.getName(), tun.detachFd(), mtu, fmt.toString()); if (currentTunnelHandle < 0) throw new Exception("Unable to turn tunnel on (wgTurnOn return " + currentTunnelHandle + ")"); -- cgit v1.2.3