diff --git a/lib/cpp/src/thrift/server/TNonblockingServer.cpp b/lib/cpp/src/thrift/server/TNonblockingServer.cpp
index 9833f10..a952bf0 100644
--- a/lib/cpp/src/thrift/server/TNonblockingServer.cpp
+++ b/lib/cpp/src/thrift/server/TNonblockingServer.cpp
@@ -1099,6 +1099,16 @@
 
   // Cool, this socket is good to go, set it as the serverSocket_
   serverSocket_ = s;
+
+  if (!port_) {
+    sockaddr_in addr;
+    unsigned int size = sizeof(addr);
+    if (!getsockname(serverSocket_, reinterpret_cast<sockaddr*>(&addr), &size)) {
+      listenPort_ = ntohs(addr.sin_port);
+    } else {
+      GlobalOutput.perror("TNonblocking: failed to get listen port: ", THRIFT_GET_SOCKET_ERROR);
+    }
+  }
 }
 
 void TNonblockingServer::setThreadManager(boost::shared_ptr<ThreadManager> threadManager) {
@@ -1157,6 +1167,9 @@
 }
 
 void TNonblockingServer::stop() {
+  if (!port_) {
+    listenPort_ = 0;
+  }
   // Breaks the event loop in all threads so that they end ASAP.
   for (uint32_t i = 0; i < ioThreads_.size(); ++i) {
     ioThreads_[i]->stop();
@@ -1196,7 +1209,7 @@
   assert(ioThreads_.size() > 0);
 
   GlobalOutput.printf("TNonblockingServer: Serving on port %d, %d io threads.",
-                      port_,
+                      listenPort_,
                       ioThreads_.size());
 
   // Launch all the secondary IO threads in separate threads
diff --git a/lib/cpp/src/thrift/server/TNonblockingServer.h b/lib/cpp/src/thrift/server/TNonblockingServer.h
index 3edc795..4f23487 100644
--- a/lib/cpp/src/thrift/server/TNonblockingServer.h
+++ b/lib/cpp/src/thrift/server/TNonblockingServer.h
@@ -155,9 +155,12 @@
   /// Server socket file descriptor
   THRIFT_SOCKET serverSocket_;
 
-  /// Port server runs on
+  /// Port server runs on. Zero when letting OS decide actual port
   int port_;
 
+  /// Port server actually runs on
+  int listenPort_;
+
   /// The optional user-provided event-base (for single-thread servers)
   event_base* userEventBase_;
 
@@ -280,6 +283,7 @@
     nextIOThread_ = 0;
     useHighPriorityIOThreads_ = false;
     port_ = port;
+    listenPort_ = port;
     userEventBase_ = NULL;
     threadPoolProcessing_ = false;
     numTConnections_ = 0;
@@ -395,6 +399,8 @@
 
   void setThreadManager(boost::shared_ptr<ThreadManager> threadManager);
 
+  int getListenPort() { return listenPort_; }
+
   boost::shared_ptr<ThreadManager> getThreadManager() { return threadManager_; }
 
   /**
diff --git a/lib/cpp/test/Makefile.am b/lib/cpp/test/Makefile.am
index 9111201..9ab6ba4 100755
--- a/lib/cpp/test/Makefile.am
+++ b/lib/cpp/test/Makefile.am
@@ -68,6 +68,7 @@
 	RecursiveTest \
 	SpecializationTest \
 	AllProtocolsTest \
+	TNonblockingServerTest \
 	TransportTest \
 	ZlibTest \
 	TFileTransportTest \
@@ -180,6 +181,18 @@
 JSONProtoTest_LDADD = libtestgencpp.la
 
 #
+# TNonblockingServerTest
+#
+TNonblockingServerTest_SOURCES = TNonblockingServerTest.cpp
+
+TNonblockingServerTest_LDADD = libprocessortest.la \
+                               $(top_builddir)/lib/cpp/libthrift.la \
+                               $(top_builddir)/lib/cpp/libthriftnb.la \
+                               $(BOOST_LDFLAGS) \
+                               -levent \
+                               -l:libboost_unit_test_framework.a
+
+#
 # OptionalRequiredTest
 #
 OptionalRequiredTest_SOURCES = \
diff --git a/lib/cpp/test/TNonblockingServerTest.cpp b/lib/cpp/test/TNonblockingServerTest.cpp
new file mode 100644
index 0000000..b6c4166
--- /dev/null
+++ b/lib/cpp/test/TNonblockingServerTest.cpp
@@ -0,0 +1,132 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.
+ */
+
+#define BOOST_TEST_MODULE TNonblockingServerTest
+#include <boost/test/unit_test.hpp>
+#include <boost/smart_ptr.hpp>
+
+#include "thrift/concurrency/Thread.h"
+#include "thrift/server/TNonblockingServer.h"
+
+#include "gen-cpp/ParentService.h"
+
+using namespace apache::thrift;
+
+struct Handler : public test::ParentServiceIf {
+  void addString(const std::string& s) { strings_.push_back(s); }
+  void getStrings(std::vector<std::string>& _return) { _return = strings_; }
+  std::vector<std::string> strings_;
+
+  // dummy overrides not used in this test
+  int32_t incrementGeneration() { return 0; }
+  int32_t getGeneration() { return 0; }
+  void getDataWait(std::string&, int32_t) {}
+  void onewayWait() {}
+  void exceptionWait(const std::string&) {}
+  void unexpectedExceptionWait(const std::string&) {}
+};
+
+class Fixture {
+private:
+  struct Runner : public concurrency::Runnable {
+    boost::shared_ptr<server::TNonblockingServer> server;
+    bool error;
+    virtual void run() {
+      error = false;
+      try {
+        server->serve();
+      } catch (const TException& x) {
+        error = true;
+      }
+    }
+  };
+
+protected:
+  Fixture() : processor(new test::ParentServiceProcessor(boost::make_shared<Handler>())) {}
+
+  int startServer(int port) {
+    boost::scoped_ptr<concurrency::ThreadFactory> threadFactory(
+        new concurrency::PlatformThreadFactory(
+#if !defined(USE_BOOST_THREAD) && !defined(USE_STD_THREAD)
+            concurrency::PlatformThreadFactory::OTHER,
+            concurrency::PlatformThreadFactory::NORMAL,
+            1,
+#endif
+            true));
+
+    int retry_count = port ? 10 : 0;
+    for (int p = port; p <= port + retry_count; p++) {
+      server.reset(new server::TNonblockingServer(processor, p));
+      boost::shared_ptr<Runner> runner(new Runner);
+      runner->server = server;
+      thread = threadFactory->newThread(runner);
+      thread->start();
+      // wait 50ms for the server to begin listening
+      THRIFT_SLEEP_USEC(50000);
+      if (!runner->error) {
+        return p;
+      }
+    }
+    throw transport::TTransportException(transport::TTransportException::NOT_OPEN,
+                                         "Failed to start server.");
+  }
+
+  bool canCommunicate(int serverPort) {
+    boost::shared_ptr<transport::TSocket> socket(new transport::TSocket("localhost", serverPort));
+    socket->open();
+    test::ParentServiceClient client(boost::make_shared<protocol::TBinaryProtocol>(
+        boost::make_shared<transport::TFramedTransport>(socket)));
+    client.addString("foo");
+    std::vector<std::string> strings;
+    client.getStrings(strings);
+    return strings.size() == 1 && !(strings[0].compare("foo"));
+  }
+
+private:
+  boost::shared_ptr<test::ParentServiceProcessor> processor;
+  boost::shared_ptr<concurrency::Thread> thread;
+
+protected:
+  boost::shared_ptr<server::TNonblockingServer> server;
+};
+
+BOOST_AUTO_TEST_SUITE(TNonblockingServerTest)
+
+BOOST_FIXTURE_TEST_CASE(get_specified_port, Fixture) {
+  int specified_port = startServer(12345);
+  BOOST_REQUIRE_GE(specified_port, 12345);
+  BOOST_REQUIRE_EQUAL(server->getListenPort(), specified_port);
+  BOOST_CHECK(canCommunicate(specified_port));
+
+  server->stop();
+  BOOST_CHECK_EQUAL(server->getListenPort(), specified_port);
+}
+
+BOOST_FIXTURE_TEST_CASE(get_assigned_port, Fixture) {
+  int specified_port = startServer(0);
+  BOOST_REQUIRE_EQUAL(specified_port, 0);
+  int assigned_port = server->getListenPort();
+  BOOST_REQUIRE_NE(assigned_port, 0);
+  BOOST_CHECK(canCommunicate(assigned_port));
+
+  server->stop();
+  BOOST_CHECK_EQUAL(server->getListenPort(), 0);
+}
+
+BOOST_AUTO_TEST_SUITE_END()