diff --git a/CMakeLists.txt b/CMakeLists.txt
index 86e8a32..b53146f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -191,6 +191,7 @@ set( fc_sources
      src/rpc/http_api.cpp
      src/rpc/json_connection.cpp
      src/rpc/state.cpp
+     src/rpc/bstate.cpp
      src/rpc/websocket_api.cpp
      src/log/log_message.cpp
      src/log/logger.cpp
diff --git a/include/fc/io/raw.hpp b/include/fc/io/raw.hpp
index bc5cd22..288c3c9 100644
--- a/include/fc/io/raw.hpp
+++ b/include/fc/io/raw.hpp
@@ -17,6 +17,13 @@
 
 namespace fc {
     namespace raw {
+
+    template<typename Stream, typename Arg0, typename... Args>
+    inline void pack( Stream& s, const Arg0& a0, Args... args ) {
+       pack( s, a0 );
+       pack( s, args... );
+    }
+
     template<typename Stream>
     inline void pack( Stream& s, const fc::exception& e )
     {
@@ -547,6 +554,20 @@ namespace fc {
       return vec;
     }
 
+    template<typename T, typename... Next>
+    inline std::vector<char> pack(  const T& v, Next... next ) {
+      datastream<size_t> ps;
+      fc::raw::pack(ps,v,next...);
+      std::vector<char> vec(ps.tellp());
+
+      if( vec.size() ) {
+        datastream<char*>  ds( vec.data(), size_t(vec.size()) );
+        fc::raw::pack(ds,v,next...);
+      }
+      return vec;
+    }
+
+
     template<typename T>
     inline T unpack( const std::vector<char>& s )
     { try  {