add random and ping

src/rpc/Handlers.h

@@ -79,5 +79,8 @@ doUnsubscribe(Context const& context);
 Result
 doServerInfo(Context const& context);
 
+// Utility methods
+Result
+doRandom(Context const& context);
 }  // namespace RPC
 #endif

src/rpc/RPC.cpp

@@ -110,7 +110,8 @@ static std::unordered_map<std::string, std::function<Result(Context const&)>>
         {"server_info", &doServerInfo},
         {"unsubscribe", &doUnsubscribe},
         {"tx", &doTx},
-        {"transaction_entry", &doTransactionEntry}};
+        {"transaction_entry", &doTransactionEntry},
+        {"random", &doRandom}};
 
 static std::unordered_set<std::string> forwardCommands{
     "submit",
@@ -155,6 +156,8 @@ buildResponse(Context const& ctx)
             return Status{Error::rpcFAILED_TO_FORWARD};
         return res;
     }
+    if (ctx.method == "ping")
+        return boost::json::object{};
 
     if (handlerTable.find(ctx.method) == handlerTable.end())
         return Status{Error::rpcUNKNOWN_COMMAND};

src/rpc/handlers/Random.cpp

@@ -0,0 +1,16 @@
+#include <ripple/beast/utility/rngfill.h>
+#include <ripple/crypto/csprng.h>
+#include <rpc/RPCHelpers.h>
+namespace RPC {
+
+Result
+doRandom(Context const& context)
+{
+    ripple::uint256 rand;
+
+    beast::rngfill(rand.begin(), rand.size(), ripple::crypto_prng());
+    boost::json::object result;
+    result["random"] = ripple::strHex(rand);
+    return result;
+}
+}  // namespace RPC