diff --git a/daemon/face/ethernet-factory.cpp b/daemon/face/ethernet-factory.cpp
index 362527f..9ff5fd5 100644
--- a/daemon/face/ethernet-factory.cpp
+++ b/daemon/face/ethernet-factory.cpp
@@ -42,6 +42,10 @@
   return id;
 }
 
+EthernetFactory::EthernetFactory(const CtorParams& params)
+  : ProtocolFactory(params)
+{
+}
 
 void
 EthernetFactory::processConfig(OptionalConfigSection configSection,
diff --git a/daemon/face/ethernet-factory.hpp b/daemon/face/ethernet-factory.hpp
index 7480728..e4cf7d9 100644
--- a/daemon/face/ethernet-factory.hpp
+++ b/daemon/face/ethernet-factory.hpp
@@ -40,6 +40,9 @@
   static const std::string&
   getId();
 
+  explicit
+  EthernetFactory(const CtorParams& params);
+
   /** \brief process face_system.ether config section
    */
   void
diff --git a/daemon/face/face-system.cpp b/daemon/face/face-system.cpp
index 7877ed0..57b391d 100644
--- a/daemon/face/face-system.cpp
+++ b/daemon/face/face-system.cpp
@@ -33,18 +33,24 @@
 
 NFD_LOG_INIT("FaceSystem");
 
-FaceSystem::FaceSystem(FaceTable& faceTable, const shared_ptr<ndn::net::NetworkMonitor>& netmon)
+FaceSystem::FaceSystem(FaceTable& faceTable, shared_ptr<ndn::net::NetworkMonitor> netmon)
   : m_faceTable(faceTable)
+  , m_netmon(std::move(netmon))
 {
-  BOOST_ASSERT(netmon != nullptr);
-
-  auto addFace = bind(&FaceTable::add, &m_faceTable, _1);
+  auto pfCtorParams = this->makePFCtorParams();
   for (const std::string& id : ProtocolFactory::listRegistered()) {
     NFD_LOG_TRACE("creating factory " << id);
-    m_factories[id] = ProtocolFactory::create(id, netmon, addFace);
+    m_factories[id] = ProtocolFactory::create(id, pfCtorParams);
   }
 }
 
+ProtocolFactoryCtorParams
+FaceSystem::makePFCtorParams()
+{
+  auto addFace = bind(&FaceTable::add, &m_faceTable, _1);
+  return {addFace, m_netmon};
+}
+
 FaceSystem::FaceSystem(FaceTable& faceTable)
   : FaceSystem(faceTable, make_shared<ndn::net::NetworkMonitor>(getGlobalIoService()))
 {
diff --git a/daemon/face/face-system.hpp b/daemon/face/face-system.hpp
index 6557c72..039c1c9 100644
--- a/daemon/face/face-system.hpp
+++ b/daemon/face/face-system.hpp
@@ -41,6 +41,7 @@
 namespace face {
 
 class ProtocolFactory;
+struct ProtocolFactoryCtorParams;
 
 /** \brief entry point of the face system
  *
@@ -50,7 +51,7 @@
 class FaceSystem : noncopyable
 {
 public:
-  FaceSystem(FaceTable& faceTable, const shared_ptr<ndn::net::NetworkMonitor>& netmon);
+  FaceSystem(FaceTable& faceTable, shared_ptr<ndn::net::NetworkMonitor> netmon);
 
   DEPRECATED(
   explicit
@@ -105,6 +106,10 @@
     friend class FaceSystem;
   };
 
+PUBLIC_WITH_TESTS_ELSE_PRIVATE:
+  ProtocolFactoryCtorParams
+  makePFCtorParams();
+
 private:
   void
   processConfig(const ConfigSection& configSection, bool isDryRun,
@@ -123,6 +128,8 @@
   std::map<std::string, ProtocolFactory*> m_factoryByScheme;
 
   FaceTable& m_faceTable;
+
+  shared_ptr<ndn::net::NetworkMonitor> m_netmon;
 };
 
 } // namespace face
diff --git a/daemon/face/protocol-factory.cpp b/daemon/face/protocol-factory.cpp
index 010190d..0a8a150 100644
--- a/daemon/face/protocol-factory.cpp
+++ b/daemon/face/protocol-factory.cpp
@@ -38,8 +38,7 @@
 }
 
 unique_ptr<ProtocolFactory>
-ProtocolFactory::create(const std::string& id, shared_ptr<ndn::net::NetworkMonitor> netmon,
-                        const FaceCreatedCallback& addFace)
+ProtocolFactory::create(const std::string& id, const CtorParams& params)
 {
   Registry& registry = getRegistry();
   auto found = registry.find(id);
@@ -47,10 +46,7 @@
     return nullptr;
   }
 
-  auto factory = found->second();
-  factory->netmon = std::move(netmon);
-  factory->addFace = addFace;
-  return factory;
+  return found->second(params);
 }
 
 std::set<std::string>
@@ -62,5 +58,13 @@
   return factoryIds;
 }
 
+ProtocolFactory::ProtocolFactory(const CtorParams& params)
+  : addFace(params.addFace)
+  , netmon(params.netmon)
+{
+  BOOST_ASSERT(addFace != nullptr);
+  BOOST_ASSERT(netmon != nullptr);
+}
+
 } // namespace face
 } // namespace nfd
diff --git a/daemon/face/protocol-factory.hpp b/daemon/face/protocol-factory.hpp
index 9d6ad3e..524f901 100644
--- a/daemon/face/protocol-factory.hpp
+++ b/daemon/face/protocol-factory.hpp
@@ -36,6 +36,19 @@
 namespace nfd {
 namespace face {
 
+/** \brief Parameters to ProtocolFactory constructor
+ *
+ *  Every ProtocolFactory subclass is expected to have a constructor that accepts CtorParams,
+ *  which in turn passes it to ProtocolFactory base class constructor. Parameters are passed as a
+ *  struct rather than individually, so that a future change in list of parameters does not
+ *  require updates to subclass constructors.
+ */
+struct ProtocolFactoryCtorParams
+{
+  FaceCreatedCallback addFace;
+  shared_ptr<ndn::net::NetworkMonitor> netmon;
+};
+
 /** \brief Provides support for an underlying protocol
  *  \sa FaceSystem
  *
@@ -46,6 +59,8 @@
 class ProtocolFactory : noncopyable
 {
 public: // registry
+  using CtorParams = ProtocolFactoryCtorParams;
+
   /** \brief Register a protocol factory type
    *  \tparam S subclass of ProtocolFactory
    *  \param id factory identifier
@@ -56,15 +71,14 @@
   {
     Registry& registry = getRegistry();
     BOOST_ASSERT(registry.count(id) == 0);
-    registry[id] = &make_unique<PF>;
+    registry[id] = &make_unique<PF, const CtorParams&>;
   }
 
   /** \brief Create a protocol factory instance
    *  \retval nullptr if factory with \p id is not registered
    */
   static unique_ptr<ProtocolFactory>
-  create(const std::string& id, shared_ptr<ndn::net::NetworkMonitor> netmon,
-         const FaceCreatedCallback& addFace);
+  create(const std::string& id, const CtorParams& params);
 
   /** \brief Get registered protocol factory ids
    */
@@ -72,8 +86,7 @@
   listRegistered();
 
 public:
-  /**
-   * \brief Base class for all exceptions thrown by ProtocolFactory subclasses
+  /** \brief Base class for all exceptions thrown by ProtocolFactory subclasses
    */
   class Error : public std::runtime_error
   {
@@ -138,6 +151,9 @@
   getChannels() const = 0;
 
 protected:
+  explicit
+  ProtocolFactory(const CtorParams& params);
+
   template<typename ChannelMap>
   static std::vector<shared_ptr<const Channel>>
   getChannelsFromMap(const ChannelMap& channelMap)
@@ -148,8 +164,8 @@
   }
 
 private: // registry
-  typedef std::function<unique_ptr<ProtocolFactory>()> CreateFunc;
-  typedef std::map<std::string, CreateFunc> Registry; // indexed by factory id
+  using CreateFunc = std::function<unique_ptr<ProtocolFactory>(const CtorParams&)>;
+  using Registry = std::map<std::string, CreateFunc>; // indexed by factory id
 
   static Registry&
   getRegistry();
@@ -157,14 +173,14 @@
 protected:
   std::set<std::string> providedSchemes; ///< FaceUri schemes provided by this ProtocolFactory
 
+  FaceCreatedCallback addFace; ///< callback when a new face is created
+
   /** \brief NetworkMonitor for listing available network interfaces and monitoring their changes
    *
    *  ProtocolFactory subclass should check the NetworkMonitor has sufficient capabilities prior
    *  to usage.
    */
   shared_ptr<ndn::net::NetworkMonitor> netmon;
-
-  FaceCreatedCallback addFace; ///< callback when a new face is created
 };
 
 } // namespace face
diff --git a/daemon/face/tcp-factory.cpp b/daemon/face/tcp-factory.cpp
index e2fb3fe..28ac251 100644
--- a/daemon/face/tcp-factory.cpp
+++ b/daemon/face/tcp-factory.cpp
@@ -40,6 +40,11 @@
   return id;
 }
 
+TcpFactory::TcpFactory(const CtorParams& params)
+  : ProtocolFactory(params)
+{
+}
+
 void
 TcpFactory::processConfig(OptionalConfigSection configSection,
                           FaceSystem::ConfigContext& context)
diff --git a/daemon/face/tcp-factory.hpp b/daemon/face/tcp-factory.hpp
index 4576c65..36ee320 100644
--- a/daemon/face/tcp-factory.hpp
+++ b/daemon/face/tcp-factory.hpp
@@ -1,5 +1,5 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
+/*
  * Copyright (c) 2014-2017,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
@@ -40,6 +40,9 @@
   static const std::string&
   getId();
 
+  explicit
+  TcpFactory(const CtorParams& params);
+
   /** \brief process face_system.tcp config section
    */
   void
diff --git a/daemon/face/udp-factory.cpp b/daemon/face/udp-factory.cpp
index cc02bfc..8303aa8 100644
--- a/daemon/face/udp-factory.cpp
+++ b/daemon/face/udp-factory.cpp
@@ -51,6 +51,10 @@
   return id;
 }
 
+UdpFactory::UdpFactory(const CtorParams& params)
+  : ProtocolFactory(params)
+{
+}
 
 void
 UdpFactory::processConfig(OptionalConfigSection configSection,
diff --git a/daemon/face/udp-factory.hpp b/daemon/face/udp-factory.hpp
index 3ebf0a3..2f809ac 100644
--- a/daemon/face/udp-factory.hpp
+++ b/daemon/face/udp-factory.hpp
@@ -1,5 +1,5 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
+/*
  * Copyright (c) 2014-2017,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
@@ -56,6 +56,9 @@
   static const std::string&
   getId();
 
+  explicit
+  UdpFactory(const CtorParams& params);
+
   /** \brief process face_system.udp config section
    */
   void
diff --git a/daemon/face/unix-stream-factory.cpp b/daemon/face/unix-stream-factory.cpp
index 2d5fe94..0bba3be 100644
--- a/daemon/face/unix-stream-factory.cpp
+++ b/daemon/face/unix-stream-factory.cpp
@@ -40,6 +40,10 @@
   return id;
 }
 
+UnixStreamFactory::UnixStreamFactory(const CtorParams& params)
+  : ProtocolFactory(params)
+{
+}
 
 void
 UnixStreamFactory::processConfig(OptionalConfigSection configSection,
diff --git a/daemon/face/unix-stream-factory.hpp b/daemon/face/unix-stream-factory.hpp
index 3061abd..53baadf 100644
--- a/daemon/face/unix-stream-factory.hpp
+++ b/daemon/face/unix-stream-factory.hpp
@@ -1,5 +1,5 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
+/*
  * Copyright (c) 2014-2017,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
@@ -40,6 +40,9 @@
   static const std::string&
   getId();
 
+  explicit
+  UnixStreamFactory(const CtorParams& params);
+
   /** \brief process face_system.unix config section
    */
   void
diff --git a/daemon/face/websocket-factory.cpp b/daemon/face/websocket-factory.cpp
index 2905ae4..21933a4 100644
--- a/daemon/face/websocket-factory.cpp
+++ b/daemon/face/websocket-factory.cpp
@@ -40,6 +40,10 @@
   return id;
 }
 
+WebSocketFactory::WebSocketFactory(const CtorParams& params)
+  : ProtocolFactory(params)
+{
+}
 
 void
 WebSocketFactory::processConfig(OptionalConfigSection configSection,
diff --git a/daemon/face/websocket-factory.hpp b/daemon/face/websocket-factory.hpp
index b7b7b02..0eaa767 100644
--- a/daemon/face/websocket-factory.hpp
+++ b/daemon/face/websocket-factory.hpp
@@ -1,5 +1,5 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
+/*
  * Copyright (c) 2014-2017,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
@@ -40,6 +40,9 @@
   static const std::string&
   getId();
 
+  explicit
+  WebSocketFactory(const CtorParams& params);
+
   /** \brief process face_system.websocket config section
    */
   void