src: externalize internal/socket_list.js messages

lib/internal/socket_list.js

@@ -2,6 +2,7 @@
 
 module.exports = {SocketListSend, SocketListReceive};
 
+const I18N = require('internal/messages');
 const EventEmitter = require('events');
 const util = require('util');
 
@@ -22,7 +23,7 @@ SocketListSend.prototype._request = function(msg, cmd, callback) {
 
   function onclose() {
     self.slave.removeListener('internalMessage', onreply);
-    callback(new Error('Slave closed before reply'));
+    callback(I18N.Error(I18N.SOCKET_LIST_SLAVE_CLOSED));
   }
 
   function onreply(msg) {

src/messages/en/messages.h

@@ -469,5 +469,6 @@
   XX(ZLIB_ASSERT_BINDING_CLOSED, "zlib binding closed")                       \
   XX(ZLIB_INVALID_INPUT, "invalid input")                                     \
   XX(ZLIB_ASSERT_HAVE_GO_DOWN, "have should not go down")                     \
+  XX(SOCKET_LIST_SLAVE_CLOSED, "Slave closed before reply")                   \
 
 #endif  // SRC_NODE_MESSAGES_SRC_H_