fw: ClientControlStrategy

refs #1214 Change-Id: Ia382acad6c8eeac85663fd664d1d34ba6f2ad478
2014-03-02 20:55:42 -07:00
parent bb5105f218
commit 2d9bdc8a5f
12 changed files with 195 additions and 29 deletions
@@ -0,0 +1,51 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (C) 2014 Named Data Networking Project
+ * See COPYING for copyright and distribution information.
+ */
+
+#include "client-control-strategy.hpp"
+
+namespace nfd {
+namespace fw {
+
+NFD_LOG_INIT("ClientControlStrategy");
+
+ClientControlStrategy::ClientControlStrategy(Forwarder& forwarder)
+  : BestRouteStrategy(forwarder)
+{
+}
+
+ClientControlStrategy::~ClientControlStrategy()
+{
+}
+
+void
+ClientControlStrategy::afterReceiveInterest(const Face& inFace,
+                                            const Interest& interest,
+                                            shared_ptr<fib::Entry> fibEntry,
+                                            shared_ptr<pit::Entry> pitEntry)
+{
+  // Strategy needn't check whether LocalControlHeader-NextHopFaceId is enabled.
+  // LocalFace does this check.
+  if (!interest.getLocalControlHeader().hasNextHopFaceId()) {
+    this->BestRouteStrategy::afterReceiveInterest(inFace, interest, fibEntry, pitEntry);
+    return;
+  }
+
+  FaceId outFaceId = static_cast<FaceId>(interest.getNextHopFaceId());
+  shared_ptr<Face> outFace = this->getFace(outFaceId);
+  if (!static_cast<bool>(outFace)) {
+    // If outFace doesn't exist, it's better to reject the Interest
+    // than to use BestRouteStrategy.
+    NFD_LOG_WARN("Interest " << interest.getName() <<
+                 " NextHopFaceId=" << outFaceId << " non-existent face");
+    this->rejectPendingInterest(pitEntry);
+    return;
+  }
+
+  this->sendInterest(pitEntry, outFace);
+}
+
+} // namespace fw
+} // namespace nfd