[HICN-6] ATS Working, little refactoring of apps

Change-Id: I174815b70bf3a9fbe99ffab7dd2914be04d364b9
Signed-off-by: Mauro Sardara <msardara@cisco.com>

1 files changed, 174 insertions, 0 deletions

diff --git a/apps/http-proxy/src/IcnReceiver.cc b/apps/http-proxy/src/IcnReceiver.cc
new file mode 100644
index 000000000..ee8ef0823
--- /dev/null
+++ b/apps/http-proxy/src/IcnReceiver.cc
@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) 2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "IcnReceiver.h"
+#include "HTTP1.xMessageFastParser.h"
+
+#include <hicn/transport/http/default_values.h>
+#include <hicn/transport/utils/hash.h>
+
+#include <functional>
+#include <memory>
+
+namespace transport {
+
+core::Prefix generatePrefix(const std::string& prefix_url) {
+  const char* str = prefix_url.c_str();
+  uint16_t pos = 0;
+
+  if (strncmp("http://", str, 7) == 0) {
+    pos = 7;
+  } else if (strncmp("https://", str, 8) == 0) {
+    pos = 8;
+  }
+
+  str += pos;
+
+  uint32_t locator_hash = utils::hash::fnv32_buf(str, strlen(str));
+
+  std::stringstream stream;
+  stream << std::hex << http::default_values::ipv6_first_word << ":0";
+
+  for (uint16_t* word = (uint16_t*)&locator_hash;
+       std::size_t(word) < (std::size_t(&locator_hash) + sizeof(locator_hash));
+       word++) {
+    stream << ":" << std::hex << *word;
+  }
+
+  stream << "::0";
+
+  return core::Prefix(stream.str(), 64);
+}
+
+AsyncConsumerProducer::AsyncConsumerProducer(const std::string& prefix,
+                                             std::string& ip_address,
+                                             std::string& port,
+                                             std::string& cache_size)
+    : prefix_(generatePrefix(prefix)),
+      producer_socket_(),
+      ip_address_(ip_address),
+      port_(port),
+      cache_size_(std::stoul(cache_size)),
+      request_counter_(0),
+      signals_(io_service_, SIGINT, SIGQUIT),
+      connector_(io_service_, ip_address_, port_,
+                 std::bind(&AsyncConsumerProducer::publishContent, this,
+                           std::placeholders::_1, std::placeholders::_2,
+                           std::placeholders::_3, std::placeholders::_4),
+                 [this]() {
+                   std::queue<interface::PublicationOptions> empty;
+                   std::swap(response_name_queue_, empty);
+                 }) {
+  int ret = producer_socket_.setSocketOption(
+      interface::GeneralTransportOptions::OUTPUT_BUFFER_SIZE, cache_size_);
+
+  if (ret != SOCKET_OPTION_SET) {
+    TRANSPORT_LOGD("Warning: output buffer size has not been set.");
+  }
+
+  producer_socket_.registerPrefix(prefix_);
+
+  // Let the main thread to catch SIGINT and SIGQUIT
+  signals_.async_wait(
+      [this](const std::error_code& errorCode, int signal_number) {
+        TRANSPORT_LOGI("Number of requests processed by plugin: %lu",
+                       (unsigned long)request_counter_);
+        producer_socket_.stop();
+        connector_.close();
+      });
+}
+
+void AsyncConsumerProducer::start() {
+  TRANSPORT_LOGD("Starting listening");
+  doReceive();
+}
+
+void AsyncConsumerProducer::run() {
+  start();
+  io_service_.run();
+}
+
+void AsyncConsumerProducer::doReceive() {
+  producer_socket_.setSocketOption(
+      interface::ProducerCallbacksOptions::CACHE_MISS,
+      [this](interface::ProducerSocket& producer,
+             interface::Interest& interest) {
+        // core::Name n(interest.getWritableName(), true);
+        io_service_.post(std::bind(
+            &AsyncConsumerProducer::manageIncomingInterest, this,
+            interest.getWritableName(), interest.acquireMemBufReference(),
+            interest.getPayload().release()));
+      });
+
+  producer_socket_.connect();
+}
+
+void AsyncConsumerProducer::manageIncomingInterest(
+    core::Name& name, core::Packet::MemBufPtr& packet, utils::MemBuf* payload) {
+  // auto seg = name.getSuffix();
+  name.setSuffix(0);
+  auto _it = chunk_number_map_.find(name);
+  auto _end = chunk_number_map_.end();
+
+  if (_it != _end) {
+    return;
+  }
+
+  bool is_mpd =
+      HTTPMessageFastParser::isMpdRequest(payload->data(), payload->length());
+
+  chunk_number_map_.emplace(name, 0);
+  response_name_queue_.emplace(std::move(name), is_mpd ? 500 : 10000);
+
+  connector_.send(payload, [packet = std::move(packet)]() {});
+}
+
+void AsyncConsumerProducer::publishContent(const uint8_t* data,
+                                           std::size_t size, bool is_last,
+                                           bool headers) {
+  uint32_t start_suffix = 0;
+
+  if (response_name_queue_.empty()) {
+    abort();
+  }
+
+  interface::PublicationOptions& options = response_name_queue_.front();
+
+  int ret = producer_socket_.setSocketOption(
+      interface::GeneralTransportOptions::CONTENT_OBJECT_EXPIRY_TIME,
+      options.getLifetime());
+
+  if (TRANSPORT_EXPECT_FALSE(ret != SOCKET_OPTION_SET)) {
+    TRANSPORT_LOGD("Warning: content object lifetime has not been set.");
+  }
+
+  const interface::Name& name = options.getName();
+
+  start_suffix = chunk_number_map_[name];
+
+  if (headers) {
+    request_counter_++;
+  }
+
+  chunk_number_map_[name] +=
+      producer_socket_.produce(name, data, size, is_last, start_suffix);
+
+  if (is_last) {
+    chunk_number_map_.erase(name);
+    response_name_queue_.pop();
+  }
+}
+
+}  // namespace transport