face: Implementing close operation and many related fixes in TcpFace and TcpChannel

Change-Id: Ib6b751e80454e149bf94f3867663d5e705cbf4a0
refs: #1250, #1248
diff --git a/tests/fw/forwarder.cpp b/tests/fw/forwarder.cpp
index 23d8828..27653bc 100644
--- a/tests/fw/forwarder.cpp
+++ b/tests/fw/forwarder.cpp
@@ -32,6 +32,11 @@
     m_ioService.stop();
   }
 
+  virtual void
+  close()
+  {
+  }
+
   void
   receiveInterest(const Interest& interest)
   {