1 files changed, 91 insertions, 0 deletions
diff --git a/hicn-light/src/io/udpTunnel.c b/hicn-light/src/io/udpTunnel.c
new file mode 100755
index 000000000..d06a35ce6
--- /dev/null
+++ b/hicn-light/src/io/udpTunnel.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2017-2019 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 <errno.h>
+#include <src/config.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <parc/assert/parc_Assert.h>
+#include <src/io/udpConnection.h>
+#include <src/io/udpListener.h>
+#include <src/io/udpTunnel.h>
+
+IoOperations *udpTunnel_CreateOnListener(Forwarder *forwarder,
+                                         ListenerOps *localListener,
+                                         const Address *remoteAddress) {
+  parcAssertNotNull(forwarder, "Parameter metis must be non-null");
+  parcAssertNotNull(localListener, "Parameter localListener must be non-null");
+  parcAssertNotNull(remoteAddress, "Parameter remoteAddress must be non-null");
+
+  Logger *logger = forwarder_GetLogger(forwarder);
+
+  IoOperations *ops = NULL;
+  if (localListener->getEncapType(localListener) == ENCAP_UDP) {
+    const Address *localAddress =
+        localListener->getListenAddress(localListener);
+    address_type localType = addressGetType(localAddress);
+    address_type remoteType = addressGetType(remoteAddress);
+
+    if (localType == remoteType) {
+      AddressPair *pair = addressPair_Create(localAddress, remoteAddress);
+      bool isLocal = false;
+      int fd = localListener->getSocket(localListener);
+      // udpListener_SetPacketType(localListener,
+      //                MessagePacketType_ContentObject);
+      ops = udpConnection_Create(forwarder, fd, pair, isLocal);
+
+      addressPair_Release(&pair);
+    } else {
+      if (logger_IsLoggable(logger, LoggerFacility_IO, PARCLogLevel_Error)) {
+        logger_Log(logger, LoggerFacility_IO, PARCLogLevel_Error, __func__,
+                   "Local listener of type %s and remote type %s, cannot "
+                   "establish tunnel",
+                   addressTypeToString(localType),
+                   addressTypeToString(remoteType));
+      }
+    }
+  } else {
+    if (logger_IsLoggable(logger, LoggerFacility_IO, PARCLogLevel_Error)) {
+      logger_Log(logger, LoggerFacility_IO, PARCLogLevel_Error, __func__,
+                 "Local listener %p is not type UDP, cannot establish tunnel",
+                 (void *)localListener);
+    }
+  }
+
+  return ops;
+}
+
+IoOperations *udpTunnel_Create(Forwarder *forwarder,
+                               const Address *localAddress,
+                               const Address *remoteAddress) {
+  ListenerSet *set = forwarder_GetListenerSet(forwarder);
+  ListenerOps *listener = listenerSet_Find(set, ENCAP_UDP, localAddress);
+  IoOperations *ops = NULL;
+  if (listener) {
+    ops = udpTunnel_CreateOnListener(forwarder, listener, remoteAddress);
+  } else {
+    if (logger_IsLoggable(forwarder_GetLogger(forwarder), LoggerFacility_IO,
+                          PARCLogLevel_Error)) {
+      char *str = addressToString(localAddress);
+      logger_Log(forwarder_GetLogger(forwarder), LoggerFacility_IO,
+                 PARCLogLevel_Error, __func__,
+                 "Could not find listener to match address %s", str);
+      parcMemory_Deallocate((void **)&str);
+    }
+  }
+  return ops;
+}