diff --git a/CMakeLists.txt b/CMakeLists.txt
index 453ccd2..4263f22 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,10 +1,10 @@
 cmake_minimum_required(VERSION 3.15)
 
-project(mesytec-node LANGUAGES CXX)
+project(mesytec-mnode LANGUAGES CXX)
 
-set(MESYTEC_NODE_MAIN_PROJECT OFF)
+set(MESYTEC_MNODE_MAIN_PROJECT OFF)
 if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
-    set(MESYTEC_NODE_MAIN_PROJECT ON)
+    set(MESYTEC_MNODE_MAIN_PROJECT ON)
 endif()
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
@@ -16,12 +16,11 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 find_package(Protobuf REQUIRED)
-#protobuf_generate_cpp(PROTO_SRCS PROTO_HDRS proto/service.proto)
 add_library(mnode-proto proto/service.proto)
 target_link_libraries(mnode-proto PUBLIC protobuf::libprotobuf)
 target_include_directories(mnode-proto PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
+
 protobuf_generate(TARGET mnode-proto)
-#protobuf_generate(TARGET mnode-proto-py LANGUAGE python PROTOS proto/service.proto)
 protobuf_generate_python(PROTO_PY proto/service.proto)
 add_custom_target(mnode-proto-py ALL DEPENDS ${PROTO_PY})
 
diff --git a/include/mesytec-node/mesytec_node_nng.h b/include/mesytec-mnode/mnode_nng.h
similarity index 96%
rename from include/mesytec-node/mesytec_node_nng.h
rename to include/mesytec-mnode/mnode_nng.h
index 02e40f5..c71fc25 100644
--- a/include/mesytec-node/mesytec_node_nng.h
+++ b/include/mesytec-mnode/mnode_nng.h
@@ -14,7 +14,7 @@
 
 #include <optional>
 
-namespace mesytec::nng
+namespace mesytec::mnode::nng
 {
 
 inline void mesy_nng_fatal(const char *const msg, int rv)
@@ -424,6 +424,23 @@ inline unique_msg make_message(const std::string &data)
     return make_unique_msg(msg);
 }
 
+inline unique_msg clone_message(const nng_msg *msg)
+{
+    nng_msg *newMsg = nullptr;
+    if (int res = nng_msg_dup(&newMsg, msg))
+    {
+        mesy_nng_error("nng_msg_dup", res);
+        return make_unique_msg();
+    }
+
+    return make_unique_msg(newMsg);
+}
+
+inline unique_msg clone_message(const unique_msg &msg)
+{
+    return clone_message(msg.get());
+}
+
 }
 
 #endif /* B18E3651_CA9A_43BC_AA25_810EA16533CD */
diff --git a/include/mesytec-mnode/mnode_nng_async.h b/include/mesytec-mnode/mnode_nng_async.h
new file mode 100644
index 0000000..4079fc7
--- /dev/null
+++ b/include/mesytec-mnode/mnode_nng_async.h
@@ -0,0 +1,25 @@
+#ifndef C7F35237_1097_46F2_9573_490355317C24
+#define C7F35237_1097_46F2_9573_490355317C24
+
+#include <mesytec-node/mesytec_node_nng.h>
+
+namespace mesytec::mnode::nng
+{
+
+class IWork
+{
+    public:
+        virtual ~IWork() = default;
+        virtual void work() = 0;
+};
+
+class IAsyncReqRepWork: public IWork
+{
+    public:
+        virtual nng::unique_msg make_request() = 0;
+        virtual void handle_reply(nng::unique_msg &&request, nng::unique_msg &&reply) = 0;
+};
+
+}
+
+#endif /* C7F35237_1097_46F2_9573_490355317C24 */
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 0429290..dfb2e65 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(MVLC_NNG_NODE_WARN_FLAGS -Wall -Wextra -Wpedantic)
+set(MVLC_NNG_MNODE_WARN_FLAGS -Wall -Wextra -Wpedantic)
 
 # Bit of a hack to set the variables here. If set earlier clang-tidy will for
 # some reason pickup log.c and warn about some va_list stuff. Might be because
@@ -20,37 +20,37 @@ set(MVLC_NNG_NODE_WARN_FLAGS -Wall -Wextra -Wpedantic)
 #)
 #target_include_directories(dp_common INTERFACE ${CMAKE_CURRENT_SOURCE_DIR})
 
-add_library(mesytec-node-nng mesytec_node_nng.cc)
-target_include_directories(mesytec-node-nng PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../include>)
-target_link_libraries(mesytec-node-nng PUBLIC nng PUBLIC spdlog)
-target_compile_features(mesytec-node-nng PUBLIC cxx_std_17)
+add_library(mesytec-mnode-nng mnode_nng.cc)
+target_include_directories(mesytec-mnode-nng PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../include>)
+target_link_libraries(mesytec-mnode-nng PUBLIC nng PUBLIC spdlog)
+target_compile_features(mesytec-mnode-nng PUBLIC cxx_std_17)
 
-add_library(mesytec-node-dev INTERFACE)
-target_link_libraries(mesytec-node-dev INTERFACE mesytec-node-nng mesytec-mvlc)
+add_library(mesytec-mnode-dev INTERFACE)
+target_link_libraries(mesytec-mnode-dev INTERFACE mesytec-mnode-nng mesytec-mvlc)
 
-function(add_node_dev_executable name)
+function(add_mnode_dev_executable name)
     add_executable(${name} ${name}.cc)
-    target_link_libraries(${name} PRIVATE mesytec-node-dev)
-    target_compile_options(${name} PRIVATE ${MVLC_NNG_NODE_WARN_FLAGS})
+    target_link_libraries(${name} PRIVATE mesytec-mnode-dev)
+    target_compile_options(${name} PRIVATE ${MVLC_NNG_MNODE_WARN_FLAGS})
 endfunction()
 
-function(add_node_proto_dev_executable name)
-    add_node_dev_executable(${name})
+function(add_mnode_proto_dev_executable name)
+    add_mnode_dev_executable(${name})
     target_link_libraries(${name} PRIVATE mnode-proto mesytec-mvlc)
 endfunction()
 
-add_node_dev_executable(pair_producer)
-add_node_dev_executable(pair_consumer)
-add_node_dev_executable(pair_inproc)
-add_node_dev_executable(mvlc_nng_replay)
-add_node_dev_executable(mesy_nng_pipeline_main)
-add_node_dev_executable(mesy_nng_push_pull_main)
-add_node_dev_executable(mesy_nng_pub_producer)
-add_node_dev_executable(mesy_nng_sub_consumer)
+add_mnode_dev_executable(pair_producer)
+add_mnode_dev_executable(pair_consumer)
+add_mnode_dev_executable(pair_inproc)
+add_mnode_dev_executable(mvlc_nng_replay)
+add_mnode_dev_executable(mesy_nng_pipeline_main)
+add_mnode_dev_executable(mesy_nng_push_pull_main)
+add_mnode_dev_executable(mesy_nng_pub_producer)
+add_mnode_dev_executable(mesy_nng_sub_consumer)
 
-add_node_proto_dev_executable(mnode_proto_test1)
-add_node_proto_dev_executable(mnode_proto_ping_client)
-add_node_proto_dev_executable(mnode_proto_ping_server)
+add_mnode_proto_dev_executable(mnode_proto_test1)
+add_mnode_proto_dev_executable(mnode_proto_ping_client)
+add_mnode_proto_dev_executable(mnode_proto_ping_server)
 
 #add_subdirectory(qt)
 
diff --git a/src/mesy_nng_pipeline_main.cc b/src/mesy_nng_pipeline_main.cc
index 12ea751..f85835d 100644
--- a/src/mesy_nng_pipeline_main.cc
+++ b/src/mesy_nng_pipeline_main.cc
@@ -1,7 +1,7 @@
 #include <future>
-#include <mesytec-node/mesytec_node_nng.h>
+#include <mesytec-mnode/mnode_nng.h>
 
-using namespace mesytec::nng;
+using namespace mesytec::mnode::nng;
 
 struct PipelineElement
 {
diff --git a/src/mesy_nng_push_pull_main.cc b/src/mesy_nng_push_pull_main.cc
index 55ee0fd..886b90a 100644
--- a/src/mesy_nng_push_pull_main.cc
+++ b/src/mesy_nng_push_pull_main.cc
@@ -1,12 +1,12 @@
-#include <mesytec-node/mesytec_node_nng.h>
+#include <mesytec-mnode/mnode_nng.h>
 #include <nng/protocol/pipeline0/push.h>
 #include <nng/protocol/pipeline0/pull.h>
 #include <thread>
 
 #include "test_producer_consumer.h"
-#include <mesytec-node/mesytec_node_nng.h>
+#include <mesytec-mnode/mnode_nng.h>
 
-using namespace mesytec::nng;
+using namespace mesytec::mnode::nng;
 
 struct Header
 {
diff --git a/src/mesytec_node_nng.cc b/src/mnode_nng.cc
similarity index 91%
rename from src/mesytec_node_nng.cc
rename to src/mnode_nng.cc
index 8bedd41..d1c097e 100644
--- a/src/mesytec_node_nng.cc
+++ b/src/mnode_nng.cc
@@ -1,6 +1,6 @@
-#include "mesytec-node/mesytec_node_nng.h"
+#include <mesytec-mnode/mnode_nng.h>
 
-namespace mesytec::nng
+namespace mesytec::mnode::nng
 {
 
 nng_socket make_pair_socket(nng_duration timeout)
diff --git a/src/mnode_proto_ping_client.cc b/src/mnode_proto_ping_client.cc
index 16c52f3..84c8962 100644
--- a/src/mnode_proto_ping_client.cc
+++ b/src/mnode_proto_ping_client.cc
@@ -3,9 +3,10 @@
 #include <mesytec-mvlc/mesytec-mvlc.h>
 #include <mesytec-mvlc/util/signal_handling.h>
 #include "proto/service.pb.h"
-#include <mesytec-node/mesytec_node_nng.h>
+#include <mesytec-mnode/mnode_nng.h>
 
 using namespace mesytec;
+using namespace mesytec::mnode;
 using namespace std::literals;
 
 void client_cb(void *arg);
@@ -15,6 +16,7 @@ class Work
   public:
     explicit Work(nng_socket socket)
         : socket(socket)
+        , request_(nng::make_unique_msg())
     {
     }
 
@@ -33,7 +35,8 @@ class Work
             nng_ctx_open(&ctx, socket);
 
             state = SEND;
-            nng_aio_set_msg(aio, make_request().release());
+            request_ = make_request();
+            nng_aio_set_msg(aio, nng::clone_message(request_.get()).release());
             nng_ctx_send(ctx, aio);
             break;
 
@@ -43,7 +46,8 @@ class Work
                 nng::mesy_nng_error("nng_ctx_send", rv);
                 nng::make_unique_msg(nng_aio_get_msg(aio)).reset();
                 state = SEND;
-                nng_aio_set_msg(aio, make_request().release());
+                request_ = make_request();
+                nng_aio_set_msg(aio, nng::clone_message(request_.get()).release());
                 nng_ctx_send(ctx, aio);
             }
             else
@@ -58,15 +62,17 @@ class Work
             {
                 nng::mesy_nng_error("nng_ctx_recv", rv);
                 state = SEND;
-                nng_aio_set_msg(aio, make_request().release());
+                request_ = make_request();
+                nng_aio_set_msg(aio, nng::clone_message(request_.get()).release());
                 nng_ctx_send(ctx, aio);
             }
             else
             {
                 auto reply = nng::make_unique_msg(nng_aio_get_msg(aio));
-                handle_reply(std::move(reply));
+                handle_reply(std::move(request_), std::move(reply));
                 state = SEND;
-                nng_aio_set_msg(aio, make_request().release());
+                request_ = make_request();
+                nng_aio_set_msg(aio, nng::clone_message(request_.get()).release());
                 nng_ctx_send(ctx, aio);
             }
 
@@ -77,16 +83,16 @@ class Work
 
     nng::unique_msg make_request()
     {
-        mnode::Ping ping;
+        Ping ping;
         ping.set_peer_id(42);
         ping.set_sequence_number(++sequence_number);
         return nng::make_message(ping.SerializeAsString());
     }
 
-    void handle_reply(nng::unique_msg &&msg)
+    void handle_reply(nng::unique_msg &&request, nng::unique_msg &&reply)
     {
-        mnode::Pong pong;
-        pong.ParseFromArray(nng_msg_body(msg.get()), nng_msg_len(msg.get()));
+        Pong pong;
+        pong.ParseFromArray(nng_msg_body(reply.get()), nng_msg_len(reply.get()));
         if (pong.peer_id() != 42 || pong.sequence_number() != sequence_number)
         {
             spdlog::error("received pong with unexpected values: {}", pong.ShortDebugString());
@@ -106,13 +112,15 @@ class Work
         RECEIVE, // receive response
     };
 
-    mnode::Ping ping;
-    mnode::Pong pong;
     size_t sequence_number = 0;
     State state = INIT;
     nng_socket socket;
     nng_aio *aio = nullptr;
     nng_ctx ctx;
+
+    nng::unique_msg request_;
+    Ping ping;
+    Pong pong;
 };
 
 void client_cb(void *arg)
diff --git a/src/mnode_proto_ping_server.cc b/src/mnode_proto_ping_server.cc
index fd75ff6..0ac204e 100644
--- a/src/mnode_proto_ping_server.cc
+++ b/src/mnode_proto_ping_server.cc
@@ -3,9 +3,10 @@
 #include <mesytec-mvlc/mesytec-mvlc.h>
 #include <mesytec-mvlc/util/signal_handling.h>
 #include "proto/service.pb.h"
-#include <mesytec-node/mesytec_node_nng.h>
+#include <mesytec-mnode/mnode_nng.h>
 
 using namespace mesytec;
+using namespace mesytec::mnode;
 using namespace std::literals;
 
 void server_cb(void *arg);
diff --git a/src/mnode_proto_test1.cc b/src/mnode_proto_test1.cc
index c829352..b0b1e4b 100644
--- a/src/mnode_proto_test1.cc
+++ b/src/mnode_proto_test1.cc
@@ -1,8 +1,9 @@
 #include <mesytec-mvlc/mesytec-mvlc.h>
 #include "proto/service.pb.h"
-#include <mesytec-node/mesytec_node_nng.h>
+#include <mesytec-mnode/mnode_nng.h>
 
 using namespace mesytec;
+using namespace mesytec::mnode;
 using namespace std::literals;
 
 void requester(nng_socket socket, unsigned id)
diff --git a/src/mvlc_nng_replay.cc b/src/mvlc_nng_replay.cc
index 5eee331..f75fbb6 100644
--- a/src/mvlc_nng_replay.cc
+++ b/src/mvlc_nng_replay.cc
@@ -3,11 +3,11 @@
 #include <mesytec-mvlc/mesytec-mvlc.h>
 #include <nng/nng.h>
 #include <sys/prctl.h>
-#include <mesytec-node/mesytec_node_nng.h>
+#include <mesytec-mnode/mnode_nng.h>
 
 using namespace mesytec;
 using namespace mesytec::mvlc;
-using namespace mesytec::nng;
+using namespace mesytec::mnode::nng;
 
 static const size_t DefaultOutputMessageReserve = mvlc::util::Megabytes(1);
 
diff --git a/src/test_producer_consumer.h b/src/test_producer_consumer.h
index f4010b0..1ab5577 100644
--- a/src/test_producer_consumer.h
+++ b/src/test_producer_consumer.h
@@ -1,9 +1,9 @@
 #ifndef E6EFFE63_EB2C_4573_B723_61840850BBF6
 #define E6EFFE63_EB2C_4573_B723_61840850BBF6
 
-#include <mesytec-node/mesytec_node_nng.h>
+#include <mesytec-mnode/mnode_nng.h>
 
-using namespace mesytec::nng; // to make the old code compile. for test code only.
+using namespace mesytec::mnode::nng; // to make the old code compile. for test code only.
 
 static const size_t BufferSize = 1024u * 1024u;
 static const size_t BuffersToSend = 100000u;