Add *localhost rpc conn in config_defaults and if not specified use *first as strategy

config/config.go

@@ -349,7 +349,7 @@ func (cfg *CGRConfig) loadRPCConns(jsnCfg *CgrJsonCfg) (err error) {
 	if jsnRpcConns, err = jsnCfg.RPCConnJsonCfg(); err != nil {
 		return
 	}
-	// hardoded the *internal and *localhost connections
+	// hardoded the *internal connection
 	cfg.rpcConns[utils.MetaInternal] = &RPCConn{
 		Strategy: rpcclient.PoolFirst,
 		PoolSize: 0,
@@ -359,18 +359,8 @@ func (cfg *CGRConfig) loadRPCConns(jsnCfg *CgrJsonCfg) (err error) {
 			},
 		},
 	}
-	cfg.rpcConns[utils.MetaLocalHost] = &RPCConn{
-		Strategy: rpcclient.PoolFirst,
-		PoolSize: 0,
-		Conns: []*RemoteHost{
-			&RemoteHost{
-				Address:   "127.0.0.1:2012",
-				Transport: utils.MetaJSON,
-			},
-		},
-	}
 	for key, val := range jsnRpcConns {
-		cfg.rpcConns[key] = new(RPCConn)
+		cfg.rpcConns[key] = NewDfltRPCConn()
 		if err = cfg.rpcConns[key].loadFromJsonCfg(val); err != nil {
 			return
 		}

config/config_defaults.go

@@ -53,7 +53,12 @@ const CGRATES_CFG_JSON = `
 },
 
 
-"rpc_conns": {},							// rpc connections definitions
+"rpc_conns": {
+	"*localhost": {
+		"strategy": "*first",
+		"conns": [{"address": "127.0.0.1:2012", "transport":"*json"}],
+	},
+},							// rpc connections definitions
 
 
 "data_db": {								// database used to store runtime data (eg: accounts)

config/rpcconn.go

@@ -18,6 +18,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>
 
 package config
 
+import "github.com/cgrates/rpcclient"
+
 // Returns the first cached default value for a RemoteHost connection
 func NewDfltRemoteHost() *RemoteHost {
 	if dfltRemoteHost == nil {
@@ -27,6 +29,10 @@ func NewDfltRemoteHost() *RemoteHost {
 	return &dfltVal
 }
 
+func NewDfltRPCConn() *RPCConn {
+	return &RPCConn{Strategy: rpcclient.PoolFirst}
+}
+
 type RPCConn struct {
 	Strategy string
 	PoolSize int