From 08233d44a6cfde878d7e10bca38ae935ed1c8fd5 Mon Sep 17 00:00:00 2001
From: Mauro <you@example.com>
Date: Wed, 30 Jun 2021 07:57:22 +0000
Subject: [HICN-713] Transport Library Major Refactoring 2

Co-authored-by: Luca Muscariello <muscariello@ieee.org>
Co-authored-by: Michele Papalini <micpapal@cisco.com>
Co-authored-by: Olivier Roques <oroques+fdio@cisco.com>
Co-authored-by: Giulio Grassi <gigrassi@cisco.com>
Signed-off-by: Mauro Sardara <msardara@cisco.com>
Change-Id: I5b2c667bad66feb45abdb5effe22ed0f6c85d1c2
---
 libtransport/src/protocols/transport_protocol.cc | 102 +++++++++++++++++++++--
 1 file changed, 93 insertions(+), 9 deletions(-)

(limited to 'libtransport/src/protocols/transport_protocol.cc')

diff --git a/libtransport/src/protocols/transport_protocol.cc b/libtransport/src/protocols/transport_protocol.cc
index 611c39212..d6954ac37 100644
--- a/libtransport/src/protocols/transport_protocol.cc
+++ b/libtransport/src/protocols/transport_protocol.cc
@@ -24,12 +24,11 @@ namespace protocol {
 using namespace interface;
 
 TransportProtocol::TransportProtocol(implementation::ConsumerSocket *icn_socket,
-                                     Reassembly *reassembly_protocol)
+                                     Indexer *indexer, Reassembly *reassembly)
     : socket_(icn_socket),
-      reassembly_protocol_(reassembly_protocol),
-      index_manager_(
-          std::make_unique<IndexManager>(socket_, this, reassembly_protocol)),
-      is_running_(false),
+      indexer_verifier_(indexer),
+      reassembly_(reassembly),
+      fec_decoder_(nullptr),
       is_first_(false),
       on_interest_retransmission_(VOID_HANDLER),
       on_interest_output_(VOID_HANDLER),
@@ -37,9 +36,17 @@ TransportProtocol::TransportProtocol(implementation::ConsumerSocket *icn_socket,
       on_interest_satisfied_(VOID_HANDLER),
       on_content_object_input_(VOID_HANDLER),
       stats_summary_(VOID_HANDLER),
-      on_payload_(VOID_HANDLER) {
+      on_payload_(VOID_HANDLER),
+      fec_type_(fec::FECType::UNKNOWN),
+      is_running_(false) {
   socket_->getSocketOption(GeneralTransportOptions::PORTAL, portal_);
   socket_->getSocketOption(OtherOptions::STATISTICS, &stats_);
+
+  // Set this transport protocol as portal's consumer callback
+  portal_->setConsumerCallback(this);
+
+  indexer_verifier_->setReassembly(reassembly_.get());
+  reassembly->setIndexer(indexer_verifier_.get());
 }
 
 int TransportProtocol::start() {
@@ -69,6 +76,7 @@ int TransportProtocol::start() {
 
   // Reset the protocol state machine
   reset();
+
   // Schedule next interests
   scheduleNextInterests();
 
@@ -99,15 +107,27 @@ void TransportProtocol::stop() {
 }
 
 void TransportProtocol::resume() {
-  if (is_running_) return;
+  if (isRunning()) return;
 
   is_running_ = true;
 
   scheduleNextInterests();
 
-  portal_->runEventsLoop();
+  if (!is_async_) {
+    // Start Event loop
+    portal_->runEventsLoop();
 
-  is_running_ = false;
+    // Not running anymore
+    is_running_ = false;
+  }
+}
+
+void TransportProtocol::reset() {
+  reassembly_->reInitialize();
+  indexer_verifier_->reset();
+  if (fec_decoder_) {
+    fec_decoder_->reset();
+  }
 }
 
 void TransportProtocol::onContentReassembled(std::error_code ec) {
@@ -127,6 +147,70 @@ void TransportProtocol::onContentReassembled(std::error_code ec) {
   }
 }
 
+void TransportProtocol::sendInterest(
+    const Name &interest_name,
+    std::array<uint32_t, MAX_AGGREGATED_INTEREST> *additional_suffixes,
+    uint32_t len) {
+  DLOG_IF(INFO, VLOG_IS_ON(3)) << "Sending interest for name " << interest_name;
+
+  auto interest = core::PacketManager<>::getInstance().getPacket<Interest>();
+  interest->setName(interest_name);
+
+  for (uint32_t i = 0; i < len; i++) {
+    interest->appendSuffix(additional_suffixes->at(i));
+  }
+
+  uint32_t lifetime = default_values::interest_lifetime;
+  socket_->getSocketOption(GeneralTransportOptions::INTEREST_LIFETIME,
+                           lifetime);
+  interest->setLifetime(uint32_t(lifetime));
+
+  if (*on_interest_output_) {
+    (*on_interest_output_)(*socket_->getInterface(), *interest);
+  }
+
+  if (TRANSPORT_EXPECT_FALSE(!isRunning() && !is_first_)) {
+    return;
+  }
+
+  portal_->sendInterest(std::move(interest));
+}
+
+void TransportProtocol::onTimeout(Interest::Ptr &i, const Name &n) {
+  if (TRANSPORT_EXPECT_FALSE(!isRunning())) {
+    return;
+  }
+
+  DLOG_IF(INFO, VLOG_IS_ON(3)) << "Timeout on content " << n;
+
+  onInterestTimeout(i, n);
+}
+
+void TransportProtocol::onContentObject(Interest &i, ContentObject &c) {
+  // Check whether it makes sense to continue
+  if (TRANSPORT_EXPECT_FALSE(!isRunning())) {
+    return;
+  }
+
+  // Call transport protocol function
+  std::error_code ec;
+  onContentObjectReceived(i, c, ec);
+
+  // Call reassemble function, if packet is eligible for reassemblying
+  bool reassemble = false;
+  if (!ec) {
+    reassemble = true;
+  }
+
+  // Perform verification and update indexer. This step may be performed offline
+  // - i.e. we may not get a result here (e.g. we use manifest). Verification
+  // failures in that case will be handled in the onPacketDropped function.
+  // XXX This step should be done before calling onContentObjectReceived, but
+  // for now we do it here since currently the indexer does not need manifests
+  // to move forward.
+  indexer_verifier_->onContentObject(i, c, reassemble);
+}
+
 }  // end namespace protocol
 
 }  // end namespace transport
-- 
cgit 1.2.3-korg