Added Message Pack to payload format

7 files changed, 100 insertions, 84 deletions

diff --git a/README.md b/README.md
index 8700cdfe..27f40c81 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,13 @@ method (any protobuf library should support this).
 The binary format is best if you need to maximize the amount of data that can be
 sent from the VI, trading off flexibility for efficiency.
 
+## Message Pack
+MessagePack is an efficient binary serialization format. It lets you exchange data
+among multiple languages like JSON. But it's faster and smaller. Small integers are 
+encoded into a single byte, and typical short strings require only one extra byte
+in addition to the strings themselves
+For protocol specification visit https://github.com/msgpack/msgpack/blob/master/spec.md
+
 ## Trace File Format
 
 An OpenXC vehicle trace file is a plaintext file that contains JSON objects,
diff --git a/gen/cpp/openxc.pb b/gen/cpp/openxc.pb
index 28afa0b9..ff526e11 100644
--- a/gen/cpp/openxc.pb
+++ b/gen/cpp/openxc.pb
diff --git a/gen/cpp/openxc.pb.c b/gen/cpp/openxc.pb.c
index ed4609db..db740c05 100644
--- a/gen/cpp/openxc.pb.c
+++ b/gen/cpp/openxc.pb.c
@@ -1,5 +1,5 @@
 /* Automatically generated nanopb constant definitions */
-/* Generated by nanopb-0.3.1 at Tue Dec  2 03:06:57 2014. */
+/* Generated by nanopb-0.3.1 at Tue Oct 27 16:15:02 2015. */
 
 #include "openxc.pb.h"
 
diff --git a/gen/cpp/openxc.pb.h b/gen/cpp/openxc.pb.h
index 2975d4d9..df7c3126 100644
--- a/gen/cpp/openxc.pb.h
+++ b/gen/cpp/openxc.pb.h
@@ -1,5 +1,5 @@
 /* Automatically generated nanopb header */
-/* Generated by nanopb-0.3.1 at Tue Dec  2 03:06:57 2014. */
+/* Generated by nanopb-0.3.1 at Tue Oct 27 16:15:02 2015. */
 
 #ifndef PB_OPENXC_PB_H_INCLUDED
 #define PB_OPENXC_PB_H_INCLUDED
@@ -45,7 +45,8 @@ typedef enum _openxc_DiagnosticControlCommand_Action {
 
 typedef enum _openxc_PayloadFormatCommand_PayloadFormat {
     openxc_PayloadFormatCommand_PayloadFormat_JSON = 1,
-    openxc_PayloadFormatCommand_PayloadFormat_PROTOBUF = 2
+    openxc_PayloadFormatCommand_PayloadFormat_PROTOBUF = 2,
+    openxc_PayloadFormatCommand_PayloadFormat_MESSAGEPACK = 3
 } openxc_PayloadFormatCommand_PayloadFormat;
 
 typedef enum _openxc_NetworkOperatorSettings_OperatorSelectMode {
diff --git a/gen/java/com/openxc/BinaryMessages.java b/gen/java/com/openxc/BinaryMessages.java
index ef02ba8f..3d3b50bf 100644
--- a/gen/java/com/openxc/BinaryMessages.java
+++ b/gen/java/com/openxc/BinaryMessages.java
@@ -4475,10 +4475,12 @@ public final class BinaryMessages {
         implements com.google.protobuf.ProtocolMessageEnum {
       JSON(0, 1),
       PROTOBUF(1, 2),
+      MESSAGEPACK(2, 3),
       ;
       
       public static final int JSON_VALUE = 1;
       public static final int PROTOBUF_VALUE = 2;
+      public static final int MESSAGEPACK_VALUE = 3;
       
       
       public final int getNumber() { return value; }
@@ -4487,6 +4489,7 @@ public final class BinaryMessages {
         switch (value) {
           case 1: return JSON;
           case 2: return PROTOBUF;
+          case 3: return MESSAGEPACK;
           default: return null;
         }
       }
@@ -4517,7 +4520,7 @@ public final class BinaryMessages {
       }
       
       private static final PayloadFormat[] VALUES = {
-        JSON, PROTOBUF, 
+        JSON, PROTOBUF, MESSAGEPACK, 
       };
       
       public static PayloadFormat valueOf(
@@ -11380,51 +11383,51 @@ public final class BinaryMessages {
       "\001\022\n\n\006CANCEL\020\002\"=\n\035PassthroughModeControlC" +
       "ommand\022\013\n\003bus\030\001 \001(\005\022\017\n\007enabled\030\002 \001(\010\"<\n\035" +
       "AcceptanceFilterBypassCommand\022\013\n\003bus\030\001 \001" +
-      "(\005\022\016\n\006bypass\030\002 \001(\010\"{\n\024PayloadFormatComma" +
-      "nd\022:\n\006format\030\001 \001(\0162*.openxc.PayloadForma",
-      "tCommand.PayloadFormat\"\'\n\rPayloadFormat\022" +
-      "\010\n\004JSON\020\001\022\014\n\010PROTOBUF\020\002\"0\n\035PredefinedObd" +
-      "2RequestsCommand\022\017\n\007enabled\030\001 \001(\010\"\321\003\n\027Ne" +
-      "tworkOperatorSettings\022\030\n\020allowDataRoamin" +
-      "g\030\001 \001(\010\022N\n\022operatorSelectMode\030\002 \001(\01622.op" +
-      "enxc.NetworkOperatorSettings.OperatorSel" +
-      "ectMode\022L\n\021networkDescriptor\030\003 \001(\01321.ope" +
-      "nxc.NetworkOperatorSettings.NetworkDescr" +
-      "iptor\032\230\001\n\021NetworkDescriptor\022\014\n\004PLMN\030\001 \001(" +
-      "\r\022R\n\013networkType\030\002 \001(\0162=.openxc.NetworkO",
-      "peratorSettings.NetworkDescriptor.Networ" +
-      "kType\"!\n\013NetworkType\022\007\n\003GSM\020\000\022\t\n\005UTRAN\020\002" +
-      "\"c\n\022OperatorSelectMode\022\r\n\tAUTOMATIC\020\000\022\n\n" +
-      "\006MANUAL\020\001\022\016\n\nDEREGISTER\020\002\022\014\n\010SET_ONLY\020\003\022" +
-      "\024\n\020MANUAL_AUTOMATIC\020\004\"\"\n\023NetworkDataSett" +
-      "ings\022\013\n\003APN\030\001 \001(\t\"3\n\025ServerConnectSettin" +
-      "gs\022\014\n\004host\030\001 \001(\t\022\014\n\004port\030\002 \001(\r\"\325\001\n\031Modem" +
-      "ConfigurationCommand\022@\n\027networkOperatorS" +
-      "ettings\030\001 \001(\0132\037.openxc.NetworkOperatorSe" +
-      "ttings\0228\n\023networkDataSettings\030\002 \001(\0132\033.op",
-      "enxc.NetworkDataSettings\022<\n\025serverConnec" +
-      "tSettings\030\003 \001(\0132\035.openxc.ServerConnectSe" +
-      "ttings\"]\n\017CommandResponse\022)\n\004type\030\001 \001(\0162" +
-      "\033.openxc.ControlCommand.Type\022\017\n\007message\030" +
-      "\002 \001(\t\022\016\n\006status\030\003 \001(\010\"\375\001\n\021DiagnosticRequ" +
-      "est\022\013\n\003bus\030\001 \001(\005\022\022\n\nmessage_id\030\002 \001(\r\022\014\n\004" +
-      "mode\030\003 \001(\r\022\013\n\003pid\030\004 \001(\r\022\017\n\007payload\030\005 \001(\014" +
-      "\022\032\n\022multiple_responses\030\006 \001(\010\022\021\n\tfrequenc" +
-      "y\030\007 \001(\001\022\014\n\004name\030\010 \001(\t\022;\n\014decoded_type\030\t " +
-      "\001(\0162%.openxc.DiagnosticRequest.DecodedTy",
-      "pe\"!\n\013DecodedType\022\010\n\004NONE\020\001\022\010\n\004OBD2\020\002\"\241\001" +
-      "\n\022DiagnosticResponse\022\013\n\003bus\030\001 \001(\005\022\022\n\nmes" +
-      "sage_id\030\002 \001(\r\022\014\n\004mode\030\003 \001(\r\022\013\n\003pid\030\004 \001(\r" +
-      "\022\017\n\007success\030\005 \001(\010\022\036\n\026negative_response_c" +
-      "ode\030\006 \001(\r\022\017\n\007payload\030\007 \001(\014\022\r\n\005value\030\010 \001(" +
-      "\001\"\242\001\n\014DynamicField\022\'\n\004type\030\001 \001(\0162\031.openx" +
-      "c.DynamicField.Type\022\024\n\014string_value\030\002 \001(" +
-      "\t\022\025\n\rnumeric_value\030\003 \001(\001\022\025\n\rboolean_valu" +
-      "e\030\004 \001(\010\"%\n\004Type\022\n\n\006STRING\020\001\022\007\n\003NUM\020\002\022\010\n\004" +
-      "BOOL\020\003\"g\n\rSimpleMessage\022\014\n\004name\030\001 \001(\t\022#\n",
-      "\005value\030\002 \001(\0132\024.openxc.DynamicField\022#\n\005ev" +
-      "ent\030\003 \001(\0132\024.openxc.DynamicFieldB\034\n\ncom.o" +
-      "penxcB\016BinaryMessages"
+      "(\005\022\016\n\006bypass\030\002 \001(\010\"\214\001\n\024PayloadFormatComm" +
+      "and\022:\n\006format\030\001 \001(\0162*.openxc.PayloadForm",
+      "atCommand.PayloadFormat\"8\n\rPayloadFormat" +
+      "\022\010\n\004JSON\020\001\022\014\n\010PROTOBUF\020\002\022\017\n\013MESSAGEPACK\020" +
+      "\003\"0\n\035PredefinedObd2RequestsCommand\022\017\n\007en" +
+      "abled\030\001 \001(\010\"\321\003\n\027NetworkOperatorSettings\022" +
+      "\030\n\020allowDataRoaming\030\001 \001(\010\022N\n\022operatorSel" +
+      "ectMode\030\002 \001(\01622.openxc.NetworkOperatorSe" +
+      "ttings.OperatorSelectMode\022L\n\021networkDesc" +
+      "riptor\030\003 \001(\01321.openxc.NetworkOperatorSet" +
+      "tings.NetworkDescriptor\032\230\001\n\021NetworkDescr" +
+      "iptor\022\014\n\004PLMN\030\001 \001(\r\022R\n\013networkType\030\002 \001(\016",
+      "2=.openxc.NetworkOperatorSettings.Networ" +
+      "kDescriptor.NetworkType\"!\n\013NetworkType\022\007" +
+      "\n\003GSM\020\000\022\t\n\005UTRAN\020\002\"c\n\022OperatorSelectMode" +
+      "\022\r\n\tAUTOMATIC\020\000\022\n\n\006MANUAL\020\001\022\016\n\nDEREGISTE" +
+      "R\020\002\022\014\n\010SET_ONLY\020\003\022\024\n\020MANUAL_AUTOMATIC\020\004\"" +
+      "\"\n\023NetworkDataSettings\022\013\n\003APN\030\001 \001(\t\"3\n\025S" +
+      "erverConnectSettings\022\014\n\004host\030\001 \001(\t\022\014\n\004po" +
+      "rt\030\002 \001(\r\"\325\001\n\031ModemConfigurationCommand\022@" +
+      "\n\027networkOperatorSettings\030\001 \001(\0132\037.openxc" +
+      ".NetworkOperatorSettings\0228\n\023networkDataS",
+      "ettings\030\002 \001(\0132\033.openxc.NetworkDataSettin" +
+      "gs\022<\n\025serverConnectSettings\030\003 \001(\0132\035.open" +
+      "xc.ServerConnectSettings\"]\n\017CommandRespo" +
+      "nse\022)\n\004type\030\001 \001(\0162\033.openxc.ControlComman" +
+      "d.Type\022\017\n\007message\030\002 \001(\t\022\016\n\006status\030\003 \001(\010\"" +
+      "\375\001\n\021DiagnosticRequest\022\013\n\003bus\030\001 \001(\005\022\022\n\nme" +
+      "ssage_id\030\002 \001(\r\022\014\n\004mode\030\003 \001(\r\022\013\n\003pid\030\004 \001(" +
+      "\r\022\017\n\007payload\030\005 \001(\014\022\032\n\022multiple_responses" +
+      "\030\006 \001(\010\022\021\n\tfrequency\030\007 \001(\001\022\014\n\004name\030\010 \001(\t\022" +
+      ";\n\014decoded_type\030\t \001(\0162%.openxc.Diagnosti",
+      "cRequest.DecodedType\"!\n\013DecodedType\022\010\n\004N" +
+      "ONE\020\001\022\010\n\004OBD2\020\002\"\241\001\n\022DiagnosticResponse\022\013" +
+      "\n\003bus\030\001 \001(\005\022\022\n\nmessage_id\030\002 \001(\r\022\014\n\004mode\030" +
+      "\003 \001(\r\022\013\n\003pid\030\004 \001(\r\022\017\n\007success\030\005 \001(\010\022\036\n\026n" +
+      "egative_response_code\030\006 \001(\r\022\017\n\007payload\030\007" +
+      " \001(\014\022\r\n\005value\030\010 \001(\001\"\242\001\n\014DynamicField\022\'\n\004" +
+      "type\030\001 \001(\0162\031.openxc.DynamicField.Type\022\024\n" +
+      "\014string_value\030\002 \001(\t\022\025\n\rnumeric_value\030\003 \001" +
+      "(\001\022\025\n\rboolean_value\030\004 \001(\010\"%\n\004Type\022\n\n\006STR" +
+      "ING\020\001\022\007\n\003NUM\020\002\022\010\n\004BOOL\020\003\"g\n\rSimpleMessag",
+      "e\022\014\n\004name\030\001 \001(\t\022#\n\005value\030\002 \001(\0132\024.openxc." +
+      "DynamicField\022#\n\005event\030\003 \001(\0132\024.openxc.Dyn" +
+      "amicFieldB\034\n\ncom.openxcB\016BinaryMessages"
     };
     com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
       new com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner() {
diff --git a/gen/python/openxc_pb2.py b/gen/python/openxc_pb2.py
index b63c713f..ae13d470 100644
--- a/gen/python/openxc_pb2.py
+++ b/gen/python/openxc_pb2.py
@@ -11,7 +11,7 @@ from google.protobuf import descriptor_pb2
 DESCRIPTOR = descriptor.FileDescriptor(
   name='openxc.proto',
   package='openxc',
-  serialized_pb='\n\x0copenxc.proto\x12\x06openxc\"\x98\x03\n\x0eVehicleMessage\x12)\n\x04type\x18\x01 \x01(\x0e\x32\x1b.openxc.VehicleMessage.Type\x12\'\n\x0b\x63\x61n_message\x18\x02 \x01(\x0b\x32\x12.openxc.CanMessage\x12-\n\x0esimple_message\x18\x03 \x01(\x0b\x32\x15.openxc.SimpleMessage\x12\x37\n\x13\x64iagnostic_response\x18\x04 \x01(\x0b\x32\x1a.openxc.DiagnosticResponse\x12/\n\x0f\x63ontrol_command\x18\x05 \x01(\x0b\x32\x16.openxc.ControlCommand\x12\x31\n\x10\x63ommand_response\x18\x06 \x01(\x0b\x32\x17.openxc.CommandResponse\x12\x0e\n\x06uptime\x18\x07 \x01(\r\"V\n\x04Type\x12\x07\n\x03\x43\x41N\x10\x01\x12\n\n\x06SIMPLE\x10\x02\x12\x0e\n\nDIAGNOSTIC\x10\x03\x12\x13\n\x0f\x43ONTROL_COMMAND\x10\x04\x12\x14\n\x10\x43OMMAND_RESPONSE\x10\x05\"\x94\x01\n\nCanMessage\x12\x0b\n\x03\x62us\x18\x01 \x01(\x05\x12\n\n\x02id\x18\x02 \x01(\r\x12\x0c\n\x04\x64\x61ta\x18\x03 \x01(\x0c\x12\x34\n\x0c\x66rame_format\x18\x04 \x01(\x0e\x32\x1e.openxc.CanMessage.FrameFormat\")\n\x0b\x46rameFormat\x12\x0c\n\x08STANDARD\x10\x01\x12\x0c\n\x08\x45XTENDED\x10\x02\"\x99\x05\n\x0e\x43ontrolCommand\x12)\n\x04type\x18\x01 \x01(\x0e\x32\x1b.openxc.ControlCommand.Type\x12<\n\x12\x64iagnostic_request\x18\x02 \x01(\x0b\x32 .openxc.DiagnosticControlCommand\x12G\n\x18passthrough_mode_request\x18\x03 \x01(\x0b\x32%.openxc.PassthroughModeControlCommand\x12O\n acceptance_filter_bypass_command\x18\x04 \x01(\x0b\x32%.openxc.AcceptanceFilterBypassCommand\x12<\n\x16payload_format_command\x18\x05 \x01(\x0b\x32\x1c.openxc.PayloadFormatCommand\x12O\n predefined_obd2_requests_command\x18\x06 \x01(\x0b\x32%.openxc.PredefinedObd2RequestsCommand\x12\x46\n\x1bmodem_configuration_command\x18\x07 \x01(\x0b\x32!.openxc.ModemConfigurationCommand\"\xac\x01\n\x04Type\x12\x0b\n\x07VERSION\x10\x01\x12\r\n\tDEVICE_ID\x10\x02\x12\x0e\n\nDIAGNOSTIC\x10\x03\x12\x0f\n\x0bPASSTHROUGH\x10\x04\x12\x1c\n\x18\x41\x43\x43\x45PTANCE_FILTER_BYPASS\x10\x05\x12\x12\n\x0ePAYLOAD_FORMAT\x10\x06\x12\x1c\n\x18PREDEFINED_OBD2_REQUESTS\x10\x07\x12\x17\n\x13MODEM_CONFIGURATION\x10\x08\"\x9e\x01\n\x18\x44iagnosticControlCommand\x12*\n\x07request\x18\x01 \x01(\x0b\x32\x19.openxc.DiagnosticRequest\x12\x37\n\x06\x61\x63tion\x18\x02 \x01(\x0e\x32\'.openxc.DiagnosticControlCommand.Action\"\x1d\n\x06\x41\x63tion\x12\x07\n\x03\x41\x44\x44\x10\x01\x12\n\n\x06\x43\x41NCEL\x10\x02\"=\n\x1dPassthroughModeControlCommand\x12\x0b\n\x03\x62us\x18\x01 \x01(\x05\x12\x0f\n\x07\x65nabled\x18\x02 \x01(\x08\"<\n\x1d\x41\x63\x63\x65ptanceFilterBypassCommand\x12\x0b\n\x03\x62us\x18\x01 \x01(\x05\x12\x0e\n\x06\x62ypass\x18\x02 \x01(\x08\"{\n\x14PayloadFormatCommand\x12:\n\x06\x66ormat\x18\x01 \x01(\x0e\x32*.openxc.PayloadFormatCommand.PayloadFormat\"\'\n\rPayloadFormat\x12\x08\n\x04JSON\x10\x01\x12\x0c\n\x08PROTOBUF\x10\x02\"0\n\x1dPredefinedObd2RequestsCommand\x12\x0f\n\x07\x65nabled\x18\x01 \x01(\x08\"\xd1\x03\n\x17NetworkOperatorSettings\x12\x18\n\x10\x61llowDataRoaming\x18\x01 \x01(\x08\x12N\n\x12operatorSelectMode\x18\x02 \x01(\x0e\x32\x32.openxc.NetworkOperatorSettings.OperatorSelectMode\x12L\n\x11networkDescriptor\x18\x03 \x01(\x0b\x32\x31.openxc.NetworkOperatorSettings.NetworkDescriptor\x1a\x98\x01\n\x11NetworkDescriptor\x12\x0c\n\x04PLMN\x18\x01 \x01(\r\x12R\n\x0bnetworkType\x18\x02 \x01(\x0e\x32=.openxc.NetworkOperatorSettings.NetworkDescriptor.NetworkType\"!\n\x0bNetworkType\x12\x07\n\x03GSM\x10\x00\x12\t\n\x05UTRAN\x10\x02\"c\n\x12OperatorSelectMode\x12\r\n\tAUTOMATIC\x10\x00\x12\n\n\x06MANUAL\x10\x01\x12\x0e\n\nDEREGISTER\x10\x02\x12\x0c\n\x08SET_ONLY\x10\x03\x12\x14\n\x10MANUAL_AUTOMATIC\x10\x04\"\"\n\x13NetworkDataSettings\x12\x0b\n\x03\x41PN\x18\x01 \x01(\t\"3\n\x15ServerConnectSettings\x12\x0c\n\x04host\x18\x01 \x01(\t\x12\x0c\n\x04port\x18\x02 \x01(\r\"\xd5\x01\n\x19ModemConfigurationCommand\x12@\n\x17networkOperatorSettings\x18\x01 \x01(\x0b\x32\x1f.openxc.NetworkOperatorSettings\x12\x38\n\x13networkDataSettings\x18\x02 \x01(\x0b\x32\x1b.openxc.NetworkDataSettings\x12<\n\x15serverConnectSettings\x18\x03 \x01(\x0b\x32\x1d.openxc.ServerConnectSettings\"]\n\x0f\x43ommandResponse\x12)\n\x04type\x18\x01 \x01(\x0e\x32\x1b.openxc.ControlCommand.Type\x12\x0f\n\x07message\x18\x02 \x01(\t\x12\x0e\n\x06status\x18\x03 \x01(\x08\"\xfd\x01\n\x11\x44iagnosticRequest\x12\x0b\n\x03\x62us\x18\x01 \x01(\x05\x12\x12\n\nmessage_id\x18\x02 \x01(\r\x12\x0c\n\x04mode\x18\x03 \x01(\r\x12\x0b\n\x03pid\x18\x04 \x01(\r\x12\x0f\n\x07payload\x18\x05 \x01(\x0c\x12\x1a\n\x12multiple_responses\x18\x06 \x01(\x08\x12\x11\n\tfrequency\x18\x07 \x01(\x01\x12\x0c\n\x04name\x18\x08 \x01(\t\x12;\n\x0c\x64\x65\x63oded_type\x18\t \x01(\x0e\x32%.openxc.DiagnosticRequest.DecodedType\"!\n\x0b\x44\x65\x63odedType\x12\x08\n\x04NONE\x10\x01\x12\x08\n\x04OBD2\x10\x02\"\xa1\x01\n\x12\x44iagnosticResponse\x12\x0b\n\x03\x62us\x18\x01 \x01(\x05\x12\x12\n\nmessage_id\x18\x02 \x01(\r\x12\x0c\n\x04mode\x18\x03 \x01(\r\x12\x0b\n\x03pid\x18\x04 \x01(\r\x12\x0f\n\x07success\x18\x05 \x01(\x08\x12\x1e\n\x16negative_response_code\x18\x06 \x01(\r\x12\x0f\n\x07payload\x18\x07 \x01(\x0c\x12\r\n\x05value\x18\x08 \x01(\x01\"\xa2\x01\n\x0c\x44ynamicField\x12\'\n\x04type\x18\x01 \x01(\x0e\x32\x19.openxc.DynamicField.Type\x12\x14\n\x0cstring_value\x18\x02 \x01(\t\x12\x15\n\rnumeric_value\x18\x03 \x01(\x01\x12\x15\n\rboolean_value\x18\x04 \x01(\x08\"%\n\x04Type\x12\n\n\x06STRING\x10\x01\x12\x07\n\x03NUM\x10\x02\x12\x08\n\x04\x42OOL\x10\x03\"g\n\rSimpleMessage\x12\x0c\n\x04name\x18\x01 \x01(\t\x12#\n\x05value\x18\x02 \x01(\x0b\x32\x14.openxc.DynamicField\x12#\n\x05\x65vent\x18\x03 \x01(\x0b\x32\x14.openxc.DynamicFieldB\x1c\n\ncom.openxcB\x0e\x42inaryMessages')
+  serialized_pb='\n\x0copenxc.proto\x12\x06openxc\"\x98\x03\n\x0eVehicleMessage\x12)\n\x04type\x18\x01 \x01(\x0e\x32\x1b.openxc.VehicleMessage.Type\x12\'\n\x0b\x63\x61n_message\x18\x02 \x01(\x0b\x32\x12.openxc.CanMessage\x12-\n\x0esimple_message\x18\x03 \x01(\x0b\x32\x15.openxc.SimpleMessage\x12\x37\n\x13\x64iagnostic_response\x18\x04 \x01(\x0b\x32\x1a.openxc.DiagnosticResponse\x12/\n\x0f\x63ontrol_command\x18\x05 \x01(\x0b\x32\x16.openxc.ControlCommand\x12\x31\n\x10\x63ommand_response\x18\x06 \x01(\x0b\x32\x17.openxc.CommandResponse\x12\x0e\n\x06uptime\x18\x07 \x01(\r\"V\n\x04Type\x12\x07\n\x03\x43\x41N\x10\x01\x12\n\n\x06SIMPLE\x10\x02\x12\x0e\n\nDIAGNOSTIC\x10\x03\x12\x13\n\x0f\x43ONTROL_COMMAND\x10\x04\x12\x14\n\x10\x43OMMAND_RESPONSE\x10\x05\"\x94\x01\n\nCanMessage\x12\x0b\n\x03\x62us\x18\x01 \x01(\x05\x12\n\n\x02id\x18\x02 \x01(\r\x12\x0c\n\x04\x64\x61ta\x18\x03 \x01(\x0c\x12\x34\n\x0c\x66rame_format\x18\x04 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@@ -149,11 +149,15 @@ _PAYLOADFORMATCOMMAND_PAYLOADFORMAT = descriptor.EnumDescriptor(
       name='PROTOBUF', index=1, number=2,
       options=None,
       type=None),
+    descriptor.EnumValueDescriptor(
+      name='MESSAGEPACK', index=2, number=3,
+      options=None,
+      type=None),
   ],
   containing_type=None,
   options=None,
-  serialized_start=1624,
-  serialized_end=1663,
+  serialized_start=1625,
+  serialized_end=1681,
 )
 
 _NETWORKOPERATORSETTINGS_NETWORKDESCRIPTOR_NETWORKTYPE = descriptor.EnumDescriptor(
@@ -173,8 +177,8 @@ _NETWORKOPERATORSETTINGS_NETWORKDESCRIPTOR_NETWORKTYPE = descriptor.EnumDescript
   ],
   containing_type=None,
   options=None,
-  serialized_start=2047,
-  serialized_end=2080,
+  serialized_start=2065,
+  serialized_end=2098,
 )
 
 _NETWORKOPERATORSETTINGS_OPERATORSELECTMODE = descriptor.EnumDescriptor(
@@ -206,8 +210,8 @@ _NETWORKOPERATORSETTINGS_OPERATORSELECTMODE = descriptor.EnumDescriptor(
   ],
   containing_type=None,
   options=None,
-  serialized_start=2082,
-  serialized_end=2181,
+  serialized_start=2100,
+  serialized_end=2199,
 )
 
 _DIAGNOSTICREQUEST_DECODEDTYPE = descriptor.EnumDescriptor(
@@ -227,8 +231,8 @@ _DIAGNOSTICREQUEST_DECODEDTYPE = descriptor.EnumDescriptor(
   ],
   containing_type=None,
   options=None,
-  serialized_start=2804,
-  serialized_end=2837,
+  serialized_start=2822,
+  serialized_end=2855,
 )
 
 _DYNAMICFIELD_TYPE = descriptor.EnumDescriptor(
@@ -252,8 +256,8 @@ _DYNAMICFIELD_TYPE = descriptor.EnumDescriptor(
   ],
   containing_type=None,
   options=None,
-  serialized_start=3129,
-  serialized_end=3166,
+  serialized_start=3147,
+  serialized_end=3184,
 )
 
 
@@ -579,8 +583,8 @@ _PAYLOADFORMATCOMMAND = descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=1540,
-  serialized_end=1663,
+  serialized_start=1541,
+  serialized_end=1681,
 )
 
 
@@ -607,8 +611,8 @@ _PREDEFINEDOBD2REQUESTSCOMMAND = descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=1665,
-  serialized_end=1713,
+  serialized_start=1683,
+  serialized_end=1731,
 )
 
 
@@ -643,8 +647,8 @@ _NETWORKOPERATORSETTINGS_NETWORKDESCRIPTOR = descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=1928,
-  serialized_end=2080,
+  serialized_start=1946,
+  serialized_end=2098,
 )
 
 _NETWORKOPERATORSETTINGS = descriptor.Descriptor(
@@ -685,8 +689,8 @@ _NETWORKOPERATORSETTINGS = descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=1716,
-  serialized_end=2181,
+  serialized_start=1734,
+  serialized_end=2199,
 )
 
 
@@ -713,8 +717,8 @@ _NETWORKDATASETTINGS = descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=2183,
-  serialized_end=2217,
+  serialized_start=2201,
+  serialized_end=2235,
 )
 
 
@@ -748,8 +752,8 @@ _SERVERCONNECTSETTINGS = descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=2219,
-  serialized_end=2270,
+  serialized_start=2237,
+  serialized_end=2288,
 )
 
 
@@ -790,8 +794,8 @@ _MODEMCONFIGURATIONCOMMAND = descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=2273,
-  serialized_end=2486,
+  serialized_start=2291,
+  serialized_end=2504,
 )
 
 
@@ -832,8 +836,8 @@ _COMMANDRESPONSE = descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=2488,
-  serialized_end=2581,
+  serialized_start=2506,
+  serialized_end=2599,
 )
 
 
@@ -917,8 +921,8 @@ _DIAGNOSTICREQUEST = descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=2584,
-  serialized_end=2837,
+  serialized_start=2602,
+  serialized_end=2855,
 )
 
 
@@ -994,8 +998,8 @@ _DIAGNOSTICRESPONSE = descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=2840,
-  serialized_end=3001,
+  serialized_start=2858,
+  serialized_end=3019,
 )
 
 
@@ -1044,8 +1048,8 @@ _DYNAMICFIELD = descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=3004,
-  serialized_end=3166,
+  serialized_start=3022,
+  serialized_end=3184,
 )
 
 
@@ -1086,8 +1090,8 @@ _SIMPLEMESSAGE = descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=3168,
-  serialized_end=3271,
+  serialized_start=3186,
+  serialized_end=3289,
 )
 
 _VEHICLEMESSAGE.fields_by_name['type'].enum_type = _VEHICLEMESSAGE_TYPE
diff --git a/openxc.proto b/openxc.proto
index bb54c770..37343629 100644
--- a/openxc.proto
+++ b/openxc.proto
@@ -69,6 +69,7 @@ message PayloadFormatCommand {
     enum PayloadFormat {
         JSON = 1;
         PROTOBUF = 2;
+		MESSAGEPACK = 3;
     }
 
     optional PayloadFormat format = 1;