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-rw-r--r--3rdparty/asio/src/examples/cpp03/http/client/sync_client.cpp106
1 files changed, 106 insertions, 0 deletions
diff --git a/3rdparty/asio/src/examples/cpp03/http/client/sync_client.cpp b/3rdparty/asio/src/examples/cpp03/http/client/sync_client.cpp
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index 00000000000..fde984a6f4f
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+++ b/3rdparty/asio/src/examples/cpp03/http/client/sync_client.cpp
@@ -0,0 +1,106 @@
+//
+// sync_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 <iostream>
+#include <istream>
+#include <ostream>
+#include <string>
+#include <asio.hpp>
+
+using asio::ip::tcp;
+
+int main(int argc, char* argv[])
+{
+ try
+ {
+ if (argc != 3)
+ {
+ std::cout << "Usage: sync_client <server> <path>\n";
+ std::cout << "Example:\n";
+ std::cout << " sync_client www.boost.org /LICENSE_1_0.txt\n";
+ return 1;
+ }
+
+ asio::io_context io_context;
+
+ // Get a list of endpoints corresponding to the server name.
+ tcp::resolver resolver(io_context);
+ tcp::resolver::results_type endpoints = resolver.resolve(argv[1], "http");
+
+ // Try each endpoint until we successfully establish a connection.
+ tcp::socket socket(io_context);
+ asio::connect(socket, endpoints);
+
+ // Form the request. We specify the "Connection: close" header so that the
+ // server will close the socket after transmitting the response. This will
+ // allow us to treat all data up until the EOF as the content.
+ asio::streambuf request;
+ std::ostream request_stream(&request);
+ request_stream << "GET " << argv[2] << " HTTP/1.0\r\n";
+ request_stream << "Host: " << argv[1] << "\r\n";
+ request_stream << "Accept: */*\r\n";
+ request_stream << "Connection: close\r\n\r\n";
+
+ // Send the request.
+ asio::write(socket, request);
+
+ // Read the response status line. The response streambuf will automatically
+ // grow to accommodate the entire line. The growth may be limited by passing
+ // a maximum size to the streambuf constructor.
+ asio::streambuf response;
+ asio::read_until(socket, response, "\r\n");
+
+ // Check that response is OK.
+ std::istream response_stream(&response);
+ std::string http_version;
+ response_stream >> http_version;
+ unsigned int status_code;
+ response_stream >> status_code;
+ std::string status_message;
+ std::getline(response_stream, status_message);
+ if (!response_stream || http_version.substr(0, 5) != "HTTP/")
+ {
+ std::cout << "Invalid response\n";
+ return 1;
+ }
+ if (status_code != 200)
+ {
+ std::cout << "Response returned with status code " << status_code << "\n";
+ return 1;
+ }
+
+ // Read the response headers, which are terminated by a blank line.
+ asio::read_until(socket, response, "\r\n\r\n");
+
+ // Process the response headers.
+ std::string header;
+ while (std::getline(response_stream, header) && header != "\r")
+ std::cout << header << "\n";
+ std::cout << "\n";
+
+ // Write whatever content we already have to output.
+ if (response.size() > 0)
+ std::cout << &response;
+
+ // Read until EOF, writing data to output as we go.
+ asio::error_code error;
+ while (asio::read(socket, response,
+ asio::transfer_at_least(1), error))
+ std::cout << &response;
+ if (error != asio::error::eof)
+ throw asio::system_error(error);
+ }
+ catch (std::exception& e)
+ {
+ std::cout << "Exception: " << e.what() << "\n";
+ }
+
+ return 0;
+}