diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/CommsAddrRec.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/CommsAddrRec.java
new file mode 100644
index 000000000..5c5507aa8
--- /dev/null
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/CommsAddrRec.java
@@ -0,0 +1,5 @@
+
+package org.eehouse.android.xw4.jni;
+
+public class CommsAddrRec {
+}
diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/TransportProcs.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/TransportProcs.java
index 5ad1b410a..f51c95357 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/TransportProcs.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/TransportProcs.java
@@ -2,4 +2,31 @@
 package org.eehouse.android.xw4.jni;
 
 public interface TransportProcs {
+    int transportSend( byte[] buf, int len, final CommsAddrRec addr );
+
+    public static final int COMMS_RELAYSTATE_UNCONNECTED = 0;
+    public static final int COMMS_RELAYSTATE_DENIED = 1;
+    public static final int COMMS_RELAYSTATE_CONNECT_PENDING = 2;
+    public static final int COMMS_RELAYSTATE_CONNECTED = 3;
+    public static final int COMMS_RELAYSTATE_RECONNECTED = 4;
+    public static final int COMMS_RELAYSTATE_ALLCONNECTED = 5;
+    void relayStatus( int newState );
+
+    void relayConnd( boolean allHere, int nMissing );
+
+    public static enum XWRELAY_ERROR { NONE
+            ,OLDFLAGS 
+            ,BADPROTO
+            ,RELAYBUSY
+            ,SHUTDOWN
+            ,TIMEOUT 
+            ,HEART_YOU
+            ,HEART_OTHER
+            ,LOST_OTHER
+            ,OTHER_DISCON
+            ,NO_ROOM
+            ,DUP_ROOM
+            ,TOO_MANY
+    };
+    void relayErrorProc( XWRELAY_ERROR relayErr );
 }