Add 'new_generation' message type

src/gmmpp_msgs.erl

@@ -89,6 +89,16 @@ validate(#{ candidate := #{ seq       := Seq
     valid(seq, Seq),
     valid(edge_bits, EdgeBits),
     Msg;
+validate(#{ new_generation := #{ height     := Height
+                               , block_hash := BHash
+                               , target     := Target
+                               , time       := Time
+                               }} = Msg, _Vsn) ->
+    valid(pos_int, Height),
+    valid(pos_int, Time),
+    valid(string, BHash),
+    valid(target, Target),
+    Msg;
 validate(#{ get_nonces := #{ seq := Seq
                            , n   := N }} = Msg, _Vsn) ->
     valid(seq, Seq),
@@ -281,6 +291,14 @@ decode_msg_(<<"candidate">>, #{ <<"candidate">> := C
                     , nonces    => Nonces
                     , seq       => Seq
                     , edge_bits => EdgeBits }};
+decode_msg_(<<"new_generation">>, #{ <<"time">>       := T
+                                   , <<"target">>     := Tgt
+                                   , <<"block_hash">> := BHash
+                                   , <<"height">>     := H }) ->
+    #{new_generation => #{ time       => T
+                         , target     => Tgt
+                         , block_hash => BHash
+                         , height     => H }};
 decode_msg_(<<"solutions">>, #{ <<"seq">>      := Seq
                               , <<"found">>    := Found }) ->
     Solutions = lists:map(