Merge pull request #1893 from majestrate/issue-1892-rpc-ping-pubkey-2022-04-13

add public key in rpc ping

llarp/rpc/lokid_rpc_client.cpp

@@ -7,6 +7,7 @@
 
 #include <nlohmann/json.hpp>
 #include <oxenc/bt.h>
+#include <oxenc/hex.h>
 #include <llarp/util/time.hpp>
 
 namespace llarp
@@ -147,7 +148,12 @@ namespace llarp
       constexpr auto PingInterval = 30s;
       auto makePingRequest = [self = shared_from_this()]() {
         // send a ping
-        nlohmann::json payload = {{"version", {VERSION[0], VERSION[1], VERSION[2]}}};
+        PubKey pk{};
+        if (auto r = self->m_Router.lock())
+          pk = r->pubkey();
+        nlohmann::json payload = {
+            {"pubkey_ed25519", oxenc::to_hex(pk.begin(), pk.end())},
+            {"version", {VERSION[0], VERSION[1], VERSION[2]}}};
         self->Request(
             "admin.lokinet_ping",
             [](bool success, std::vector<std::string> data) {