[GitHub] [nifi-minifi-cpp] martinzink commented on a change in pull request #978: MINIFICPP-1453: Verify Supported TLS Protocols

[GitBox <gi...@apache.org>]

martinzink commented on a change in pull request #978:
URL: https://github.com/apache/nifi-minifi-cpp/pull/978#discussion_r567716547



##########
File path: extensions/standard-processors/tests/integration/TLSServerSocketSupportedProtocolsTest.cpp
##########
@@ -0,0 +1,310 @@
+/**
+ *
+ * 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.
+ */
+#ifndef WIN32
+#include <arpa/inet.h>
+#endif
+#include <signal.h>
+#include <sys/stat.h>
+#include <chrono>
+#include <thread>
+#include <cerrno>
+#include <cinttypes>
+#undef NDEBUG
+#include <cassert>
+#include <utility>
+#include <memory>
+#include <string>
+#ifdef WIN32
+#include <ws2tcpip.h>
+#include <winsock2.h>
+#endif
+#include "properties/Configure.h"
+#include "io/tls/TLSSocket.h"
+#include "io/tls/TLSServerSocket.h"
+
+#ifdef WIN32
+using SocketDescriptor = SOCKET;
+#else
+using SocketDescriptor = int;
+static constexpr SocketDescriptor INVALID_SOCKET = -1;
+#endif /* WIN32 */
+
+namespace {
+const char* str_family(int family) {
+  switch (family) {
+    case AF_INET: return "AF_INET";
+    case AF_INET6: return "AF_INET6";
+    default: return "(n/a)";
+  }
+}
+
+const char* str_socktype(int socktype) {
+  switch (socktype) {
+    case SOCK_STREAM: return "SOCK_STREAM";
+    case SOCK_DGRAM: return "SOCK_DGRAM";
+    default: return "(n/a)";
+  }
+}
+
+const char* str_proto(int protocol) {
+  switch (protocol) {
+    case IPPROTO_TCP: return "IPPROTO_TCP";
+    case IPPROTO_UDP: return "IPPROTO_UDP";
+    case IPPROTO_IP: return "IPPROTO_IP";
+    case IPPROTO_ICMP: return "IPPROTO_ICMP";
+    default: return "(n/a)";
+  }
+}
+
+std::string str_addr(const sockaddr* const sa) {
+  char buf[128] = {0};
+  switch (sa->sa_family) {
+    case AF_INET: {
+      sockaddr_in sin{};
+      memcpy(&sin, sa, sizeof(sockaddr_in));
+#ifdef WIN32
+      const auto addr_str = InetNtop(AF_INET, &sin.sin_addr, buf, sizeof(buf));
+#else
+      const auto addr_str = inet_ntop(AF_INET, &sin.sin_addr, buf, sizeof(buf));
+#endif
+      if (!addr_str) {
+        throw std::runtime_error{minifi::io::get_last_socket_error_message()};
+      }
+      return std::string{addr_str};
+    }
+    case AF_INET6: {
+      sockaddr_in6 sin6{};
+      memcpy(&sin6, sa, sizeof(sockaddr_in6));
+#ifdef WIN32
+      const auto addr_str = InetNtop(AF_INET, &sin6.sin6_addr, buf, sizeof(buf));
+#else
+      const auto addr_str = inet_ntop(AF_INET, &sin6.sin6_addr, buf, sizeof(buf));
+#endif
+      if (!addr_str) {
+        throw std::runtime_error{minifi::io::get_last_socket_error_message()};
+      }
+      return std::string{addr_str};
+    }
+    default: return "(n/a)";
+  }
+}
+
+void log_addrinfo(addrinfo* const ai, logging::Logger& logger) {
+  logger.log_debug(".ai_family: %d %s\n", ai->ai_family, str_family(ai->ai_family));
+  logger.log_debug(".ai_socktype: %d %s\n", ai->ai_socktype, str_socktype(ai->ai_socktype));
+  logger.log_debug(".ai_protocol: %d %s\n", ai->ai_protocol, str_proto(ai->ai_protocol));
+  logger.log_debug(".ai_addr: %s\n", str_addr(ai->ai_addr).c_str());
+  logger.log_debug(".ai_addrlen: %" PRIu32 "\n", ai->ai_addrlen);
+}
+}  // namespace
+
+class SimpleSSLTestClient  {
+ public:
+  SimpleSSLTestClient(const SSL_METHOD* method, const std::string& host, const std::string& port) :
+    host_(host),
+    port_(port) {
+      ctx_ = SSL_CTX_new(method);
+      sfd_ = openConnection(host_.c_str(), port_.c_str(), *logger_);
+      if (ctx_ != nullptr)
+        ssl_ = SSL_new(ctx_);
+      if (ssl_ != nullptr)
+        SSL_set_fd(ssl_, sfd_);
+  }
+
+  ~SimpleSSLTestClient() {
+    SSL_free(ssl_);
+#ifdef WIN32
+    closesocket(sfd_);
+#else
+    close(sfd_);
+#endif
+    SSL_CTX_free(ctx_);
+  }
+
+  bool canConnect() {
+    const int status = SSL_connect(ssl_);
+    const bool successful_connection = (status == 1);
+    return successful_connection;
+  }
+
+ private:
+  SSL_CTX *ctx_ = nullptr;
+  SSL* ssl_ = nullptr;
+  SocketDescriptor sfd_;
+  std::string host_;
+  std::string port_;
+  gsl::not_null<std::shared_ptr<logging::Logger>> logger_{gsl::make_not_null(logging::LoggerFactory<SimpleSSLTestClient>::getLogger())};
+
+  static SocketDescriptor openConnection(const char *host_name, const char *port, logging::Logger& logger) {
+    struct addrinfo hints = {0}, *addrs;
+    hints.ai_family = AF_UNSPEC;
+    hints.ai_socktype = SOCK_STREAM;
+    hints.ai_protocol = IPPROTO_TCP;
+    const int status = getaddrinfo(host_name, port, &hints, &addrs);
+    assert(status == 0);
+    SocketDescriptor sfd = INVALID_SOCKET;
+    for (struct addrinfo *addr = addrs; addr != nullptr; addr = addr->ai_next) {
+      log_addrinfo(addr, logger);
+      sfd = socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol);
+      if (sfd == INVALID_SOCKET) {
+        logger.log_error("socket: %s\n", minifi::io::get_last_socket_error_message());
+        continue;
+      }
+      const auto connect_result = connect(sfd, addr->ai_addr, addr->ai_addrlen);
+      if (connect_result == 0) {
+        break;
+      } else {
+        logger.log_error("connect to %s: %s\n", str_addr(addr->ai_addr), minifi::io::get_last_socket_error_message());
+      }
+      sfd = INVALID_SOCKET;
+#ifdef WIN32
+      closesocket(sfd);
+#else
+      close(sfd);
+#endif
+    }
+    freeaddrinfo(addrs);
+    assert(sfd != INVALID_SOCKET);
+    return sfd;
+  }
+};
+
+class SimpleSSLTestClientTLSv1  : public SimpleSSLTestClient {
+ public:
+  SimpleSSLTestClientTLSv1(const std::string& host, const std::string& port)
+      : SimpleSSLTestClient(TLSv1_client_method(), host, port) {
+  }
+};
+
+class SimpleSSLTestClientTLSv1_1  : public SimpleSSLTestClient {
+ public:
+  SimpleSSLTestClientTLSv1_1(const std::string& host, const std::string& port)
+      : SimpleSSLTestClient(TLSv1_1_client_method(), host, port) {
+  }
+};
+
+class SimpleSSLTestClientTLSv1_2  : public SimpleSSLTestClient {
+ public:
+  SimpleSSLTestClientTLSv1_2(const std::string& host, const std::string& port)
+      : SimpleSSLTestClient(TLSv1_2_client_method(), host, port) {
+  }
+};
+
+class TLSServerSocketSupportedProtocolsTest {
+ public:
+    explicit TLSServerSocketSupportedProtocolsTest(const std::string& key_dir)
+        : is_running_(false), key_dir_(key_dir), configuration_(std::make_shared<minifi::Configure>()) {
+    }
+
+    void run() {
+      configureSecurity();
+
+      createServerSocket();
+
+      verifyTLSServerSocketExclusiveCompatibilityWithTLSv1_2();
+
+      shutdownServerSocket();
+    }
+
+ protected:
+    void configureSecurity() {
+      host_ = org::apache::nifi::minifi::io::Socket::getMyHostName();
+      port_ = "38778";
+      if (!key_dir_.empty()) {
+        configuration_->set(minifi::Configure::nifi_remote_input_secure, "true");
+        configuration_->set(minifi::Configure::nifi_security_client_certificate, key_dir_ + "cn.crt.pem");
+        configuration_->set(minifi::Configure::nifi_security_client_private_key, key_dir_ + "cn.ckey.pem");
+        configuration_->set(minifi::Configure::nifi_security_client_pass_phrase, key_dir_ + "cn.pass");
+        configuration_->set(minifi::Configure::nifi_security_client_ca_certificate, key_dir_ + "nifi-cert.pem");
+        configuration_->set(minifi::Configure::nifi_default_directory, key_dir_);
+      }
+    }
+
+    void createServerSocket() {
+      const auto socket_context = std::make_shared<org::apache::nifi::minifi::io::TLSContext>(configuration_);
+      server_socket_ = std::make_shared<org::apache::nifi::minifi::io::TLSServerSocket>(socket_context, host_, std::stoi(port_), 3);
+      assert(0 == server_socket_->initialize());
+
+      is_running_ = true;
+      check_ = [this]() -> bool {
+        return is_running_;
+      };
+      handler_ = [this](std::vector<uint8_t> *bytes_written, int *size) {
+        std::string contents = "hello world";
+        *bytes_written = {contents.begin(), contents.end()};
+        bytes_written->push_back(0);
+        *size = bytes_written->size();
+        return *size;
+      };
+      server_socket_->registerCallback(check_, handler_, std::chrono::milliseconds(50));
+    }
+
+    void verifyTLSServerSocketExclusiveCompatibilityWithTLSv1_2() {
+      verifyTLSProtocolIncompatibility<SimpleSSLTestClientTLSv1>();
+      verifyTLSProtocolIncompatibility<SimpleSSLTestClientTLSv1_1>();
+      verifyTLSProtocolCompatibility<SimpleSSLTestClientTLSv1_2>();
+    }
+
+    template <class TLSTestClient>
+    void verifyTLSProtocolIncompatibility() {
+      verifyTLSProtocolCompatibility<TLSTestClient>(false);
+    }
+
+    template <class TLSTestClient>
+    void verifyTLSProtocolCompatibility() {
+      verifyTLSProtocolCompatibility<TLSTestClient>(true);
+    }
+
+    template <class TLSTestClient>
+    void verifyTLSProtocolCompatibility(bool should_be_compatible) {
+      TLSTestClient client(host_, port_);
+      assert(client.canConnect() == should_be_compatible);
+    }
+
+    void shutdownServerSocket() {
+      is_running_ = false;
+    }
+
+    std::function<bool()> check_;
+    std::function<int(std::vector<uint8_t> *bytes_written, int *size)> handler_;
+    std::atomic<bool> is_running_;
+    std::shared_ptr<org::apache::nifi::minifi::io::TLSServerSocket> server_socket_;

Review comment:
       Made it unique to be more clear, calling reset however seemed little excessive since unique_ptr destructor will be called and that achieves the same thing. I did however changed the destructor to set is_running_ to false. This will basically achieve that the external check function inside the socket will return false, after that the unique_ptr destructor will destroy the socket which will set its own inside check to false and it'll wait for the thread to finish. 

##########
File path: extensions/standard-processors/tests/integration/TLSServerSocketSupportedProtocolsTest.cpp
##########
@@ -0,0 +1,310 @@
+/**
+ *
+ * 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.
+ */
+#ifndef WIN32
+#include <arpa/inet.h>
+#endif
+#include <signal.h>
+#include <sys/stat.h>
+#include <chrono>
+#include <thread>
+#include <cerrno>
+#include <cinttypes>
+#undef NDEBUG
+#include <cassert>
+#include <utility>
+#include <memory>
+#include <string>
+#ifdef WIN32
+#include <ws2tcpip.h>
+#include <winsock2.h>
+#endif
+#include "properties/Configure.h"
+#include "io/tls/TLSSocket.h"
+#include "io/tls/TLSServerSocket.h"
+
+#ifdef WIN32
+using SocketDescriptor = SOCKET;
+#else
+using SocketDescriptor = int;
+static constexpr SocketDescriptor INVALID_SOCKET = -1;
+#endif /* WIN32 */
+
+namespace {
+const char* str_family(int family) {
+  switch (family) {
+    case AF_INET: return "AF_INET";
+    case AF_INET6: return "AF_INET6";
+    default: return "(n/a)";
+  }
+}
+
+const char* str_socktype(int socktype) {
+  switch (socktype) {
+    case SOCK_STREAM: return "SOCK_STREAM";
+    case SOCK_DGRAM: return "SOCK_DGRAM";
+    default: return "(n/a)";
+  }
+}
+
+const char* str_proto(int protocol) {
+  switch (protocol) {
+    case IPPROTO_TCP: return "IPPROTO_TCP";
+    case IPPROTO_UDP: return "IPPROTO_UDP";
+    case IPPROTO_IP: return "IPPROTO_IP";
+    case IPPROTO_ICMP: return "IPPROTO_ICMP";
+    default: return "(n/a)";
+  }
+}
+
+std::string str_addr(const sockaddr* const sa) {
+  char buf[128] = {0};
+  switch (sa->sa_family) {
+    case AF_INET: {
+      sockaddr_in sin{};
+      memcpy(&sin, sa, sizeof(sockaddr_in));
+#ifdef WIN32
+      const auto addr_str = InetNtop(AF_INET, &sin.sin_addr, buf, sizeof(buf));
+#else
+      const auto addr_str = inet_ntop(AF_INET, &sin.sin_addr, buf, sizeof(buf));
+#endif
+      if (!addr_str) {
+        throw std::runtime_error{minifi::io::get_last_socket_error_message()};
+      }
+      return std::string{addr_str};
+    }
+    case AF_INET6: {
+      sockaddr_in6 sin6{};
+      memcpy(&sin6, sa, sizeof(sockaddr_in6));
+#ifdef WIN32
+      const auto addr_str = InetNtop(AF_INET, &sin6.sin6_addr, buf, sizeof(buf));
+#else
+      const auto addr_str = inet_ntop(AF_INET, &sin6.sin6_addr, buf, sizeof(buf));
+#endif
+      if (!addr_str) {
+        throw std::runtime_error{minifi::io::get_last_socket_error_message()};
+      }
+      return std::string{addr_str};
+    }
+    default: return "(n/a)";
+  }
+}
+
+void log_addrinfo(addrinfo* const ai, logging::Logger& logger) {
+  logger.log_debug(".ai_family: %d %s\n", ai->ai_family, str_family(ai->ai_family));
+  logger.log_debug(".ai_socktype: %d %s\n", ai->ai_socktype, str_socktype(ai->ai_socktype));
+  logger.log_debug(".ai_protocol: %d %s\n", ai->ai_protocol, str_proto(ai->ai_protocol));
+  logger.log_debug(".ai_addr: %s\n", str_addr(ai->ai_addr).c_str());
+  logger.log_debug(".ai_addrlen: %" PRIu32 "\n", ai->ai_addrlen);
+}
+}  // namespace
+
+class SimpleSSLTestClient  {
+ public:
+  SimpleSSLTestClient(const SSL_METHOD* method, const std::string& host, const std::string& port) :
+    host_(host),
+    port_(port) {
+      ctx_ = SSL_CTX_new(method);
+      sfd_ = openConnection(host_.c_str(), port_.c_str(), *logger_);
+      if (ctx_ != nullptr)
+        ssl_ = SSL_new(ctx_);
+      if (ssl_ != nullptr)
+        SSL_set_fd(ssl_, sfd_);
+  }
+
+  ~SimpleSSLTestClient() {
+    SSL_free(ssl_);
+#ifdef WIN32
+    closesocket(sfd_);
+#else
+    close(sfd_);
+#endif
+    SSL_CTX_free(ctx_);
+  }
+
+  bool canConnect() {
+    const int status = SSL_connect(ssl_);
+    const bool successful_connection = (status == 1);
+    return successful_connection;
+  }
+
+ private:
+  SSL_CTX *ctx_ = nullptr;
+  SSL* ssl_ = nullptr;
+  SocketDescriptor sfd_;
+  std::string host_;
+  std::string port_;
+  gsl::not_null<std::shared_ptr<logging::Logger>> logger_{gsl::make_not_null(logging::LoggerFactory<SimpleSSLTestClient>::getLogger())};
+
+  static SocketDescriptor openConnection(const char *host_name, const char *port, logging::Logger& logger) {
+    struct addrinfo hints = {0}, *addrs;
+    hints.ai_family = AF_UNSPEC;
+    hints.ai_socktype = SOCK_STREAM;
+    hints.ai_protocol = IPPROTO_TCP;
+    const int status = getaddrinfo(host_name, port, &hints, &addrs);
+    assert(status == 0);
+    SocketDescriptor sfd = INVALID_SOCKET;
+    for (struct addrinfo *addr = addrs; addr != nullptr; addr = addr->ai_next) {
+      log_addrinfo(addr, logger);
+      sfd = socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol);
+      if (sfd == INVALID_SOCKET) {
+        logger.log_error("socket: %s\n", minifi::io::get_last_socket_error_message());
+        continue;
+      }
+      const auto connect_result = connect(sfd, addr->ai_addr, addr->ai_addrlen);
+      if (connect_result == 0) {
+        break;
+      } else {
+        logger.log_error("connect to %s: %s\n", str_addr(addr->ai_addr), minifi::io::get_last_socket_error_message());
+      }
+      sfd = INVALID_SOCKET;
+#ifdef WIN32
+      closesocket(sfd);
+#else
+      close(sfd);
+#endif
+    }
+    freeaddrinfo(addrs);
+    assert(sfd != INVALID_SOCKET);
+    return sfd;
+  }
+};
+
+class SimpleSSLTestClientTLSv1  : public SimpleSSLTestClient {
+ public:
+  SimpleSSLTestClientTLSv1(const std::string& host, const std::string& port)
+      : SimpleSSLTestClient(TLSv1_client_method(), host, port) {
+  }
+};
+
+class SimpleSSLTestClientTLSv1_1  : public SimpleSSLTestClient {
+ public:
+  SimpleSSLTestClientTLSv1_1(const std::string& host, const std::string& port)
+      : SimpleSSLTestClient(TLSv1_1_client_method(), host, port) {
+  }
+};
+
+class SimpleSSLTestClientTLSv1_2  : public SimpleSSLTestClient {
+ public:
+  SimpleSSLTestClientTLSv1_2(const std::string& host, const std::string& port)
+      : SimpleSSLTestClient(TLSv1_2_client_method(), host, port) {
+  }
+};
+
+class TLSServerSocketSupportedProtocolsTest {
+ public:
+    explicit TLSServerSocketSupportedProtocolsTest(const std::string& key_dir)
+        : is_running_(false), key_dir_(key_dir), configuration_(std::make_shared<minifi::Configure>()) {
+    }
+
+    void run() {
+      configureSecurity();
+
+      createServerSocket();
+
+      verifyTLSServerSocketExclusiveCompatibilityWithTLSv1_2();
+
+      shutdownServerSocket();
+    }
+
+ protected:
+    void configureSecurity() {
+      host_ = org::apache::nifi::minifi::io::Socket::getMyHostName();
+      port_ = "38778";
+      if (!key_dir_.empty()) {
+        configuration_->set(minifi::Configure::nifi_remote_input_secure, "true");
+        configuration_->set(minifi::Configure::nifi_security_client_certificate, key_dir_ + "cn.crt.pem");
+        configuration_->set(minifi::Configure::nifi_security_client_private_key, key_dir_ + "cn.ckey.pem");
+        configuration_->set(minifi::Configure::nifi_security_client_pass_phrase, key_dir_ + "cn.pass");
+        configuration_->set(minifi::Configure::nifi_security_client_ca_certificate, key_dir_ + "nifi-cert.pem");
+        configuration_->set(minifi::Configure::nifi_default_directory, key_dir_);
+      }
+    }
+
+    void createServerSocket() {
+      const auto socket_context = std::make_shared<org::apache::nifi::minifi::io::TLSContext>(configuration_);
+      server_socket_ = std::make_shared<org::apache::nifi::minifi::io::TLSServerSocket>(socket_context, host_, std::stoi(port_), 3);
+      assert(0 == server_socket_->initialize());
+
+      is_running_ = true;
+      check_ = [this]() -> bool {
+        return is_running_;
+      };
+      handler_ = [this](std::vector<uint8_t> *bytes_written, int *size) {
+        std::string contents = "hello world";
+        *bytes_written = {contents.begin(), contents.end()};
+        bytes_written->push_back(0);
+        *size = bytes_written->size();
+        return *size;
+      };
+      server_socket_->registerCallback(check_, handler_, std::chrono::milliseconds(50));
+    }
+
+    void verifyTLSServerSocketExclusiveCompatibilityWithTLSv1_2() {
+      verifyTLSProtocolIncompatibility<SimpleSSLTestClientTLSv1>();
+      verifyTLSProtocolIncompatibility<SimpleSSLTestClientTLSv1_1>();
+      verifyTLSProtocolCompatibility<SimpleSSLTestClientTLSv1_2>();
+    }
+
+    template <class TLSTestClient>
+    void verifyTLSProtocolIncompatibility() {
+      verifyTLSProtocolCompatibility<TLSTestClient>(false);
+    }
+
+    template <class TLSTestClient>
+    void verifyTLSProtocolCompatibility() {
+      verifyTLSProtocolCompatibility<TLSTestClient>(true);
+    }
+
+    template <class TLSTestClient>
+    void verifyTLSProtocolCompatibility(bool should_be_compatible) {
+      TLSTestClient client(host_, port_);
+      assert(client.canConnect() == should_be_compatible);
+    }
+
+    void shutdownServerSocket() {
+      is_running_ = false;
+    }
+
+    std::function<bool()> check_;
+    std::function<int(std::vector<uint8_t> *bytes_written, int *size)> handler_;

Review comment:
       fixed

##########
File path: extensions/standard-processors/tests/integration/TLSServerSocketSupportedProtocolsTest.cpp
##########
@@ -0,0 +1,310 @@
+/**
+ *
+ * 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.
+ */
+#ifndef WIN32
+#include <arpa/inet.h>
+#endif
+#include <signal.h>
+#include <sys/stat.h>
+#include <chrono>
+#include <thread>
+#include <cerrno>
+#include <cinttypes>
+#undef NDEBUG
+#include <cassert>
+#include <utility>
+#include <memory>
+#include <string>
+#ifdef WIN32
+#include <ws2tcpip.h>
+#include <winsock2.h>
+#endif
+#include "properties/Configure.h"
+#include "io/tls/TLSSocket.h"
+#include "io/tls/TLSServerSocket.h"
+
+#ifdef WIN32
+using SocketDescriptor = SOCKET;
+#else
+using SocketDescriptor = int;
+static constexpr SocketDescriptor INVALID_SOCKET = -1;
+#endif /* WIN32 */
+
+namespace {
+const char* str_family(int family) {
+  switch (family) {
+    case AF_INET: return "AF_INET";
+    case AF_INET6: return "AF_INET6";
+    default: return "(n/a)";
+  }
+}
+
+const char* str_socktype(int socktype) {
+  switch (socktype) {
+    case SOCK_STREAM: return "SOCK_STREAM";
+    case SOCK_DGRAM: return "SOCK_DGRAM";
+    default: return "(n/a)";
+  }
+}
+
+const char* str_proto(int protocol) {
+  switch (protocol) {
+    case IPPROTO_TCP: return "IPPROTO_TCP";
+    case IPPROTO_UDP: return "IPPROTO_UDP";
+    case IPPROTO_IP: return "IPPROTO_IP";
+    case IPPROTO_ICMP: return "IPPROTO_ICMP";
+    default: return "(n/a)";
+  }
+}
+
+std::string str_addr(const sockaddr* const sa) {
+  char buf[128] = {0};
+  switch (sa->sa_family) {
+    case AF_INET: {
+      sockaddr_in sin{};
+      memcpy(&sin, sa, sizeof(sockaddr_in));
+#ifdef WIN32
+      const auto addr_str = InetNtop(AF_INET, &sin.sin_addr, buf, sizeof(buf));
+#else
+      const auto addr_str = inet_ntop(AF_INET, &sin.sin_addr, buf, sizeof(buf));
+#endif
+      if (!addr_str) {
+        throw std::runtime_error{minifi::io::get_last_socket_error_message()};
+      }
+      return std::string{addr_str};
+    }
+    case AF_INET6: {
+      sockaddr_in6 sin6{};
+      memcpy(&sin6, sa, sizeof(sockaddr_in6));
+#ifdef WIN32
+      const auto addr_str = InetNtop(AF_INET, &sin6.sin6_addr, buf, sizeof(buf));
+#else
+      const auto addr_str = inet_ntop(AF_INET, &sin6.sin6_addr, buf, sizeof(buf));
+#endif
+      if (!addr_str) {
+        throw std::runtime_error{minifi::io::get_last_socket_error_message()};
+      }
+      return std::string{addr_str};
+    }
+    default: return "(n/a)";
+  }
+}
+
+void log_addrinfo(addrinfo* const ai, logging::Logger& logger) {
+  logger.log_debug(".ai_family: %d %s\n", ai->ai_family, str_family(ai->ai_family));
+  logger.log_debug(".ai_socktype: %d %s\n", ai->ai_socktype, str_socktype(ai->ai_socktype));
+  logger.log_debug(".ai_protocol: %d %s\n", ai->ai_protocol, str_proto(ai->ai_protocol));
+  logger.log_debug(".ai_addr: %s\n", str_addr(ai->ai_addr).c_str());
+  logger.log_debug(".ai_addrlen: %" PRIu32 "\n", ai->ai_addrlen);
+}
+}  // namespace
+
+class SimpleSSLTestClient  {
+ public:
+  SimpleSSLTestClient(const SSL_METHOD* method, const std::string& host, const std::string& port) :
+    host_(host),
+    port_(port) {
+      ctx_ = SSL_CTX_new(method);
+      sfd_ = openConnection(host_.c_str(), port_.c_str(), *logger_);
+      if (ctx_ != nullptr)
+        ssl_ = SSL_new(ctx_);
+      if (ssl_ != nullptr)
+        SSL_set_fd(ssl_, sfd_);
+  }
+
+  ~SimpleSSLTestClient() {
+    SSL_free(ssl_);
+#ifdef WIN32
+    closesocket(sfd_);
+#else
+    close(sfd_);
+#endif
+    SSL_CTX_free(ctx_);
+  }
+
+  bool canConnect() {
+    const int status = SSL_connect(ssl_);
+    const bool successful_connection = (status == 1);
+    return successful_connection;
+  }
+
+ private:
+  SSL_CTX *ctx_ = nullptr;
+  SSL* ssl_ = nullptr;
+  SocketDescriptor sfd_;
+  std::string host_;
+  std::string port_;
+  gsl::not_null<std::shared_ptr<logging::Logger>> logger_{gsl::make_not_null(logging::LoggerFactory<SimpleSSLTestClient>::getLogger())};
+
+  static SocketDescriptor openConnection(const char *host_name, const char *port, logging::Logger& logger) {
+    struct addrinfo hints = {0}, *addrs;
+    hints.ai_family = AF_UNSPEC;
+    hints.ai_socktype = SOCK_STREAM;
+    hints.ai_protocol = IPPROTO_TCP;
+    const int status = getaddrinfo(host_name, port, &hints, &addrs);
+    assert(status == 0);
+    SocketDescriptor sfd = INVALID_SOCKET;
+    for (struct addrinfo *addr = addrs; addr != nullptr; addr = addr->ai_next) {
+      log_addrinfo(addr, logger);
+      sfd = socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol);
+      if (sfd == INVALID_SOCKET) {
+        logger.log_error("socket: %s\n", minifi::io::get_last_socket_error_message());
+        continue;
+      }
+      const auto connect_result = connect(sfd, addr->ai_addr, addr->ai_addrlen);
+      if (connect_result == 0) {
+        break;
+      } else {
+        logger.log_error("connect to %s: %s\n", str_addr(addr->ai_addr), minifi::io::get_last_socket_error_message());
+      }
+      sfd = INVALID_SOCKET;
+#ifdef WIN32
+      closesocket(sfd);
+#else
+      close(sfd);
+#endif
+    }
+    freeaddrinfo(addrs);
+    assert(sfd != INVALID_SOCKET);
+    return sfd;
+  }
+};
+
+class SimpleSSLTestClientTLSv1  : public SimpleSSLTestClient {
+ public:
+  SimpleSSLTestClientTLSv1(const std::string& host, const std::string& port)
+      : SimpleSSLTestClient(TLSv1_client_method(), host, port) {
+  }
+};
+
+class SimpleSSLTestClientTLSv1_1  : public SimpleSSLTestClient {
+ public:
+  SimpleSSLTestClientTLSv1_1(const std::string& host, const std::string& port)
+      : SimpleSSLTestClient(TLSv1_1_client_method(), host, port) {
+  }
+};
+
+class SimpleSSLTestClientTLSv1_2  : public SimpleSSLTestClient {
+ public:
+  SimpleSSLTestClientTLSv1_2(const std::string& host, const std::string& port)
+      : SimpleSSLTestClient(TLSv1_2_client_method(), host, port) {
+  }
+};
+
+class TLSServerSocketSupportedProtocolsTest {
+ public:
+    explicit TLSServerSocketSupportedProtocolsTest(const std::string& key_dir)
+        : is_running_(false), key_dir_(key_dir), configuration_(std::make_shared<minifi::Configure>()) {
+    }
+
+    void run() {
+      configureSecurity();
+
+      createServerSocket();
+
+      verifyTLSServerSocketExclusiveCompatibilityWithTLSv1_2();
+
+      shutdownServerSocket();
+    }
+
+ protected:
+    void configureSecurity() {
+      host_ = org::apache::nifi::minifi::io::Socket::getMyHostName();
+      port_ = "38778";
+      if (!key_dir_.empty()) {
+        configuration_->set(minifi::Configure::nifi_remote_input_secure, "true");
+        configuration_->set(minifi::Configure::nifi_security_client_certificate, key_dir_ + "cn.crt.pem");
+        configuration_->set(minifi::Configure::nifi_security_client_private_key, key_dir_ + "cn.ckey.pem");
+        configuration_->set(minifi::Configure::nifi_security_client_pass_phrase, key_dir_ + "cn.pass");
+        configuration_->set(minifi::Configure::nifi_security_client_ca_certificate, key_dir_ + "nifi-cert.pem");
+        configuration_->set(minifi::Configure::nifi_default_directory, key_dir_);
+      }
+    }
+
+    void createServerSocket() {
+      const auto socket_context = std::make_shared<org::apache::nifi::minifi::io::TLSContext>(configuration_);
+      server_socket_ = std::make_shared<org::apache::nifi::minifi::io::TLSServerSocket>(socket_context, host_, std::stoi(port_), 3);
+      assert(0 == server_socket_->initialize());
+
+      is_running_ = true;
+      check_ = [this]() -> bool {
+        return is_running_;
+      };
+      handler_ = [this](std::vector<uint8_t> *bytes_written, int *size) {
+        std::string contents = "hello world";
+        *bytes_written = {contents.begin(), contents.end()};
+        bytes_written->push_back(0);
+        *size = bytes_written->size();
+        return *size;
+      };
+      server_socket_->registerCallback(check_, handler_, std::chrono::milliseconds(50));
+    }
+
+    void verifyTLSServerSocketExclusiveCompatibilityWithTLSv1_2() {
+      verifyTLSProtocolIncompatibility<SimpleSSLTestClientTLSv1>();
+      verifyTLSProtocolIncompatibility<SimpleSSLTestClientTLSv1_1>();
+      verifyTLSProtocolCompatibility<SimpleSSLTestClientTLSv1_2>();
+    }
+
+    template <class TLSTestClient>
+    void verifyTLSProtocolIncompatibility() {
+      verifyTLSProtocolCompatibility<TLSTestClient>(false);
+    }
+
+    template <class TLSTestClient>
+    void verifyTLSProtocolCompatibility() {
+      verifyTLSProtocolCompatibility<TLSTestClient>(true);
+    }
+
+    template <class TLSTestClient>
+    void verifyTLSProtocolCompatibility(bool should_be_compatible) {

Review comment:
       fixed




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