JSON message parsing for contract control messages. (#166)

src/msg/controlmsg_common.hpp

@@ -0,0 +1,16 @@
+#ifndef _HP_MSG_CONTROLMSG_COMMON_
+#define _HP_MSG_CONTROLMSG_COMMON_
+
+#include "../pchheader.hpp"
+
+namespace msg::controlmsg
+{
+    // Message field names
+    constexpr const char *FLD_TYPE = "type";
+
+    // Message types
+    constexpr const char *MSGTYPE_CONTRACT_END = "contract_end";
+
+} // namespace msg::controlmsg
+
+#endif