martinzink commented on code in PR #1595:
URL: https://github.com/apache/nifi-minifi-cpp/pull/1595#discussion_r1247496446
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controller/Controller.cpp:
##########
@@ -20,195 +20,286 @@
#include "io/BufferStream.h"
#include "c2/C2Payload.h"
+#include "io/AsioStream.h"
+#include "asio/ssl/context.hpp"
+#include "asio/ssl/stream.hpp"
+#include "asio/connect.hpp"
+#include "core/logging/Logger.h"
+#include "utils/net/AsioSocketUtils.h"
namespace org::apache::nifi::minifi::controller {
-bool sendSingleCommand(std::unique_ptr<io::Socket> socket, uint8_t op, const
std::string& value) {
- if (socket->initialize() < 0) {
+namespace {
+
+class ClientConnection {
+ public:
+ explicit ClientConnection(const ControllerSocketData& socket_data) {
+ if (socket_data.ssl_context_service) {
+ connectTcpSocketOverSsl(socket_data);
+ } else {
+ connectTcpSocket(socket_data);
+ }
+ }
+
+ [[nodiscard]] io::BaseStream* getStream() const {
+ return stream_.get();
+ }
+
+ private:
+ void connectTcpSocketOverSsl(const ControllerSocketData& socket_data) {
+ auto ssl_context =
utils::net::getSslContext(*socket_data.ssl_context_service);
+ asio::ssl::stream<asio::ip::tcp::socket> socket(io_context_, ssl_context);
+
+ asio::ip::tcp::resolver resolver(io_context_);
+ asio::error_code err;
+ asio::ip::tcp::resolver::results_type endpoints =
resolver.resolve(socket_data.host, std::to_string(socket_data.port), err);
+ if (err) {
+ logger_->log_error("Resolving host '%s' on port '%s' failed with the
following message: '%s'", socket_data.host, std::to_string(socket_data.port),
err.message());
+ return;
+ }
+
+ asio::connect(socket.lowest_layer(), endpoints, err);
+ if (err) {
+ logger_->log_error("Connecting to host '%s' on port '%s' failed with the
following message: '%s'", socket_data.host, std::to_string(socket_data.port),
err.message());
+ return;
+ }
+ socket.handshake(asio::ssl::stream_base::client, err);
+ if (err) {
+ logger_->log_error("SSL handshake failed while connecting to host '%s'
on port '%s' with the following message: '%s'", socket_data.host,
std::to_string(socket_data.port), err.message());
+ return;
+ }
+ stream_ =
std::make_unique<io::AsioStream<asio::ssl::stream<asio::ip::tcp::socket>>>(std::move(socket));
+ }
+
+ void connectTcpSocket(const ControllerSocketData& socket_data) {
+ asio::ip::tcp::socket socket(io_context_);
+
+ asio::ip::tcp::resolver resolver(io_context_);
+ asio::error_code err;
+ asio::ip::tcp::resolver::results_type endpoints =
resolver.resolve(socket_data.host, std::to_string(socket_data.port));
Review Comment:
I think it might be better to use the async variant, since this might take a
long time before it fails, and there is no way to set timeout for the
synchronous variant.
The resolve part is also sync in PutUDP we should reconsider that one aswell
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