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-rw-r--r--3rdparty/asio/src/examples/cpp11/ssl/client.cpp165
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diff --git a/3rdparty/asio/src/examples/cpp11/ssl/client.cpp b/3rdparty/asio/src/examples/cpp11/ssl/client.cpp
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+++ b/3rdparty/asio/src/examples/cpp11/ssl/client.cpp
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+//
+// client.cpp
+// ~~~~~~~~~~
+//
+// Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <cstdlib>
+#include <cstring>
+#include <functional>
+#include <iostream>
+#include "asio.hpp"
+#include "asio/ssl.hpp"
+
+using asio::ip::tcp;
+using std::placeholders::_1;
+using std::placeholders::_2;
+
+enum { max_length = 1024 };
+
+class client
+{
+public:
+ client(asio::io_context& io_context,
+ asio::ssl::context& context,
+ const tcp::resolver::results_type& endpoints)
+ : socket_(io_context, context)
+ {
+ socket_.set_verify_mode(asio::ssl::verify_peer);
+ socket_.set_verify_callback(
+ std::bind(&client::verify_certificate, this, _1, _2));
+
+ connect(endpoints);
+ }
+
+private:
+ bool verify_certificate(bool preverified,
+ asio::ssl::verify_context& ctx)
+ {
+ // The verify callback can be used to check whether the certificate that is
+ // being presented is valid for the peer. For example, RFC 2818 describes
+ // the steps involved in doing this for HTTPS. Consult the OpenSSL
+ // documentation for more details. Note that the callback is called once
+ // for each certificate in the certificate chain, starting from the root
+ // certificate authority.
+
+ // In this example we will simply print the certificate's subject name.
+ char subject_name[256];
+ X509* cert = X509_STORE_CTX_get_current_cert(ctx.native_handle());
+ X509_NAME_oneline(X509_get_subject_name(cert), subject_name, 256);
+ std::cout << "Verifying " << subject_name << "\n";
+
+ return preverified;
+ }
+
+ void connect(const tcp::resolver::results_type& endpoints)
+ {
+ asio::async_connect(socket_.lowest_layer(), endpoints,
+ [this](const std::error_code& error,
+ const tcp::endpoint& /*endpoint*/)
+ {
+ if (!error)
+ {
+ handshake();
+ }
+ else
+ {
+ std::cout << "Connect failed: " << error.message() << "\n";
+ }
+ });
+ }
+
+ void handshake()
+ {
+ socket_.async_handshake(asio::ssl::stream_base::client,
+ [this](const std::error_code& error)
+ {
+ if (!error)
+ {
+ send_request();
+ }
+ else
+ {
+ std::cout << "Handshake failed: " << error.message() << "\n";
+ }
+ });
+ }
+
+ void send_request()
+ {
+ std::cout << "Enter message: ";
+ std::cin.getline(request_, max_length);
+ size_t request_length = std::strlen(request_);
+
+ asio::async_write(socket_,
+ asio::buffer(request_, request_length),
+ [this](const std::error_code& error, std::size_t length)
+ {
+ if (!error)
+ {
+ receive_response(length);
+ }
+ else
+ {
+ std::cout << "Write failed: " << error.message() << "\n";
+ }
+ });
+ }
+
+ void receive_response(std::size_t length)
+ {
+ asio::async_read(socket_,
+ asio::buffer(reply_, length),
+ [this](const std::error_code& error, std::size_t length)
+ {
+ if (!error)
+ {
+ std::cout << "Reply: ";
+ std::cout.write(reply_, length);
+ std::cout << "\n";
+ }
+ else
+ {
+ std::cout << "Read failed: " << error.message() << "\n";
+ }
+ });
+ }
+
+ asio::ssl::stream<tcp::socket> socket_;
+ char request_[max_length];
+ char reply_[max_length];
+};
+
+int main(int argc, char* argv[])
+{
+ try
+ {
+ if (argc != 3)
+ {
+ std::cerr << "Usage: client <host> <port>\n";
+ return 1;
+ }
+
+ asio::io_context io_context;
+
+ tcp::resolver resolver(io_context);
+ auto endpoints = resolver.resolve(argv[1], argv[2]);
+
+ asio::ssl::context ctx(asio::ssl::context::sslv23);
+ ctx.load_verify_file("ca.pem");
+
+ client c(io_context, ctx, endpoints);
+
+ io_context.run();
+ }
+ catch (std::exception& e)
+ {
+ std::cerr << "Exception: " << e.what() << "\n";
+ }
+
+ return 0;
+}