RPC: add 'getpeerinfo', returning easy-to-retrieve per-CNode data

src/rpcnet.cpp

@@ -15,7 +15,53 @@ Value getconnectioncount(const Array& params, bool fHelp)
             "getconnectioncount\n"
             "Returns the number of connections to other nodes.");
 
+    LOCK(cs_vNodes);
     return (int)vNodes.size();
 }
 
+static void CopyNodeStats(std::vector<CNodeStats>& vstats)
+{
+    vstats.clear();
+
+    LOCK(cs_vNodes);
+    vstats.reserve(vNodes.size());
+    BOOST_FOREACH(CNode* pnode, vNodes) {
+        CNodeStats stats;
+        pnode->copyStats(stats);
+        vstats.push_back(stats);
+    }
+}
+
+Value getpeerinfo(const Array& params, bool fHelp)
+{
+    if (fHelp || params.size() != 0)
+        throw runtime_error(
+            "getpeerinfo\n"
+            "Returns data about each connected network node.");
+
+    vector<CNodeStats> vstats;
+    CopyNodeStats(vstats);
+
+    Array ret;
+
+    BOOST_FOREACH(const CNodeStats& stats, vstats) {
+        Object obj;
+
+        obj.push_back(Pair("addr", stats.addrName));
+        obj.push_back(Pair("services", strprintf("%08"PRI64x, stats.nServices)));
+        obj.push_back(Pair("lastsend", (boost::int64_t)stats.nLastSend));
+        obj.push_back(Pair("lastrecv", (boost::int64_t)stats.nLastRecv));
+        obj.push_back(Pair("conntime", (boost::int64_t)stats.nTimeConnected));
+        obj.push_back(Pair("version", stats.nVersion));
+        obj.push_back(Pair("subver", stats.strSubVer));
+        obj.push_back(Pair("inbound", stats.fInbound));
+        obj.push_back(Pair("releasetime", (boost::int64_t)stats.nReleaseTime));
+        obj.push_back(Pair("height", stats.nStartingHeight));
+        obj.push_back(Pair("banscore", stats.nMisbehavior));
+
+        ret.push_back(obj);
+    }
+    
+    return ret;
+}