diff --git a/model/ccnx-content-object-header.cc b/model/ccnx-content-object-header.cc
index 46a1554..a3852a2 100644
--- a/model/ccnx-content-object-header.cc
+++ b/model/ccnx-content-object-header.cc
@@ -22,6 +22,7 @@
 #include "ccnx-content-object-header.h"
 
 #include "ns3/log.h"
+#include "ns3/ccnx-coding-helper.h"
 
 NS_LOG_COMPONENT_DEFINE ("CcnxContentObjectHeader");
 
@@ -60,19 +61,22 @@
 uint32_t
 CcnxContentObjectHeader::GetSerializedSize (void) const
 {
-  return 0;
+  // Unfortunately, two serializations are required, unless we can pre-calculate header length... which is not trivial
+  Buffer tmp;
+  
+  return CcnxCodingHelper::Serialize (tmp.Begin(), *this);
 }
     
 void
 CcnxContentObjectHeader::Serialize (Buffer::Iterator start) const
 {
-  return;
+  CcnxCodingHelper::Serialize (start, *this);
 }
 
 uint32_t
 CcnxContentObjectHeader::Deserialize (Buffer::Iterator start)
 {
-  return 0;
+  return 0; // the most complicated part is here
 }
   
 TypeId
diff --git a/model/ccnx-interest-header.cc b/model/ccnx-interest-header.cc
index 627946c..cab33ea 100644
--- a/model/ccnx-interest-header.cc
+++ b/model/ccnx-interest-header.cc
@@ -26,6 +26,7 @@
 #include "ccnx-interest-header.h"
 
 #include "ns3/log.h"
+#include "ns3/ccnx-coding-helper.h"
 
 NS_LOG_COMPONENT_DEFINE ("CcnxInterestHeader");
 
@@ -167,19 +168,22 @@
 uint32_t
 CcnxInterestHeader::GetSerializedSize (void) const
 {
-  return 0;
+  // unfortunately, 2 serialization required...
+  Buffer tmp;
+  
+  return CcnxCodingHelper::Serialize (tmp.Begin(), *this);
 }
     
 void
 CcnxInterestHeader::Serialize (Buffer::Iterator start) const
 {
-  return;
+  CcnxCodingHelper::Serialize (start, *this);
 }
 
 uint32_t
 CcnxInterestHeader::Deserialize (Buffer::Iterator start)
 {
-  return 0;
+  return 0; // the most complicated part is here
 }
 
 TypeId
@@ -191,7 +195,23 @@
 void
 CcnxInterestHeader::Print (std::ostream &os) const
 {
-  os << "Interest: " << *m_name;
+  os << "<Interest><Name>" << *m_name << "</Name>";
+  if (m_minSuffixComponents>=0)
+    os << "<MinSuffixComponents>" << m_minSuffixComponents << "</MinSuffixComponents>";
+  if (m_maxSuffixComponents>=0)
+    os << "<MaxSuffixComponents>" << m_maxSuffixComponents << "</MaxSuffixComponents>";
+  if (m_exclude->size()>0)
+    os << "<Exclude>" << *m_exclude << "</Exclude>";
+  if (m_childSelector)
+    os << "<ChildSelector />";
+  if (m_answerOriginKind)
+    os << "<AnswerOriginKind />";
+  if (m_scope>=0)
+    os << "<Scope>" << m_scope << "</Scope>";
+  if (!m_interestLifetime.IsZero())
+    os << "<InterestLifetime>" << m_interestLifetime << "</InterestLifetime>";
+  if (m_nonce>0)
+    os << "<Nonce>" << m_nonce << "</Nonce>";
 }
 
 }
diff --git a/model/name-components.cc b/model/name-components.cc
index 55e57c4..e1af1ee 100644
--- a/model/name-components.cc
+++ b/model/name-components.cc
@@ -20,9 +20,6 @@
 
 #include "name-components.h"
 
-#include "ns3/ccn.h"
-#include "ns3/ccn_charbuf.h"
-
 #include <iostream>
 
 using namespace std;
@@ -49,6 +46,13 @@
   // ccn_charbuf_destroy(&m_value);
 }
 
+const std::list<std::string> &
+Components::GetComponents () const
+{
+  return m_prefix;
+}
+
+  
 // const ccn_charbuf*
 // Components::GetName () const
 // {
diff --git a/model/name-components.h b/model/name-components.h
index 8c124f8..d9b3f0a 100644
--- a/model/name-components.h
+++ b/model/name-components.h
@@ -37,6 +37,9 @@
   ~Components ();
   
   Components& operator () (const std::string &s);
+
+  const std::list<std::string> &
+  GetComponents () const;
   
   // virtual uint32_t
   // GetSerializedSize (void) const;