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authorParménides GV <parmegv@sdf.org>2014-11-04 20:45:42 +0100
committerParménides GV <parmegv@sdf.org>2014-11-04 20:45:42 +0100
commit5304543ebd60778ad46123cd63142e27627fa150 (patch)
treeb07723b530e20b23ae83de822387f6551ea7f9f4 /ics-openvpn-stripped/main/openvpn/doc/android.txt
parent713c3a98f53a6bd1ad94e90f28d3e37d20abfab9 (diff)
Update ics-openvpn to rev 906.
Diffstat (limited to 'ics-openvpn-stripped/main/openvpn/doc/android.txt')
-rw-r--r--ics-openvpn-stripped/main/openvpn/doc/android.txt17
1 files changed, 16 insertions, 1 deletions
diff --git a/ics-openvpn-stripped/main/openvpn/doc/android.txt b/ics-openvpn-stripped/main/openvpn/doc/android.txt
index 871e3997..137edfc5 100644
--- a/ics-openvpn-stripped/main/openvpn/doc/android.txt
+++ b/ics-openvpn-stripped/main/openvpn/doc/android.txt
@@ -2,7 +2,7 @@ This file documents the support in OpenVPN for Android 4.0 and up.
This support is primarily used in the "OpenVPN for Android" app
(http://code.google.com/p/ics-openvpn/). For building see the developer
-README: http://code.google.com/p/ics-openvpn/source/browse/README.txt.
+README: http://code.google.com/p/ics-openvpn/source/browse/doc/README.txt.
Android provides the VPNService API
(http://developer.android.com/reference/android/net/VpnService.html)
@@ -55,6 +55,21 @@ To set the DNS server and search domain.
The GUI will then respond with a "needok 'command' ok' or "needok
'command' cancel', e.g. "needok 'IFCONFIG' ok".
+PERSIST_TUN_ACTION
+
+In Android 4.4-4.4.2 a bug exists that does not allow to open a new tun fd
+while a tun fd is still open. When OpenVPN wants to open an fd it will do
+this query. The UI should compare the last configuration of
+the tun device with the current tun configuration and reply with either (or
+always respond with OPEN_AFTER_BEFORE/OPEN_BEFORE_CLOSE)
+
+- NOACTION: Keep using the old fd
+- OPEN_AFTER_CLOSE: First close the old fd and then open a new to workaround the bug
+- OPEN_BEFORE_CLOSE: the normal behaviour when the VPN configuration changed
+
+For example the UI could respond with
+needok 'PERSIST_TUN_ACTION' OPEN_AFTER_CLOSE
+
To protect a socket the OpenVPN will send a PROTECTFD to the UI.
When sending the PROTECTFD command command to the UI it will send
the fd of the socket as ancillary message over the UNIX socket.