diff --git a/src/management/nfd-controller.cpp b/src/management/nfd-controller.cpp
index 2d5b348..1517522 100644
--- a/src/management/nfd-controller.cpp
+++ b/src/management/nfd-controller.cpp
@@ -25,6 +25,10 @@
 namespace ndn {
 namespace nfd {
 
+const uint32_t Controller::ERROR_TIMEOUT = 10060;
+const uint32_t Controller::ERROR_SERVER = 500;
+const uint32_t Controller::ERROR_LBOUND = 400;
+
 Controller::Controller(Face& face)
   : m_face(face)
   , m_internalKeyChain(make_shared<KeyChain>())
@@ -43,6 +47,38 @@
                          const ControlParameters& parameters,
                          const CommandSucceedCallback& onSuccess,
                          const CommandFailCallback& onFailure,
+                         const CommandOptions& options)
+{
+  Name requestName = command->getRequestName(options.getPrefix(), parameters);
+  Interest interest(requestName);
+  interest.setInterestLifetime(options.getTimeout());
+
+  switch (options.getSigningParamsKind()) {
+  case CommandOptions::SIGNING_PARAMS_DEFAULT:
+    m_keyChain.sign(interest);
+    break;
+  case CommandOptions::SIGNING_PARAMS_IDENTITY:
+    m_keyChain.signByIdentity(interest, options.getSigningIdentity());
+    break;
+  case CommandOptions::SIGNING_PARAMS_CERTIFICATE:
+    m_keyChain.sign(interest, options.getSigningCertificate());
+    break;
+  default:
+    BOOST_ASSERT(false);
+    break;
+  }
+
+  m_face.expressInterest(interest,
+                         bind(&Controller::processCommandResponse, this, _2,
+                              command, onSuccess, onFailure),
+                         bind(onFailure, ERROR_TIMEOUT, "request timed out"));
+}
+
+void
+Controller::startCommand(const shared_ptr<ControlCommand>& command,
+                         const ControlParameters& parameters,
+                         const CommandSucceedCallback& onSuccess,
+                         const CommandFailCallback& onFailure,
                          const Sign& sign,
                          const time::milliseconds& timeout)
 {
@@ -53,12 +89,10 @@
   interest.setInterestLifetime(timeout);
   sign(interest);
 
-  // http://msdn.microsoft.com/en-us/library/windows/desktop/ms740668.aspx
-  const uint32_t timeoutCode = 10060;
   m_face.expressInterest(interest,
                          bind(&Controller::processCommandResponse, this, _2,
                               command, onSuccess, onFailure),
-                         bind(onFailure, timeoutCode, "Command Interest timed out"));
+                         bind(onFailure, ERROR_TIMEOUT, "request timed out"));
 }
 
 void
@@ -69,21 +103,18 @@
 {
   /// \todo verify Data signature
 
-  const uint32_t serverErrorCode = 500;
-
   ControlResponse response;
   try {
     response.wireDecode(data.getContent().blockFromValue());
   }
-  catch (ndn::tlv::Error& e) {
+  catch (tlv::Error& e) {
     if (static_cast<bool>(onFailure))
-      onFailure(serverErrorCode, e.what());
+      onFailure(ERROR_SERVER, e.what());
     return;
   }
 
   uint32_t code = response.getCode();
-  const uint32_t errorCodeLowerBound = 400;
-  if (code >= errorCodeLowerBound) {
+  if (code >= ERROR_LBOUND) {
     if (static_cast<bool>(onFailure))
       onFailure(code, response.getText());
     return;
@@ -93,9 +124,9 @@
   try {
     parameters.wireDecode(response.getBody());
   }
-  catch (ndn::tlv::Error& e) {
+  catch (tlv::Error& e) {
     if (static_cast<bool>(onFailure))
-      onFailure(serverErrorCode, e.what());
+      onFailure(ERROR_SERVER, e.what());
     return;
   }
 
@@ -104,7 +135,7 @@
   }
   catch (ControlCommand::ArgumentError& e) {
     if (static_cast<bool>(onFailure))
-      onFailure(serverErrorCode, e.what());
+      onFailure(ERROR_SERVER, e.what());
     return;
   }