testing commit of hello world program and output

CBExample.cpp

@@ -0,0 +1,94 @@
+/***
+ * Copyright (C) Microsoft. All rights reserved.
+ * Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
+ *
+ * =+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
+ *
+ * bingrequest.cpp - Simple cmd line application that makes an HTTP GET request to bing searching and outputting
+ *       the resulting HTML response body into a file.
+ *
+ * =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+ ****/
+
+#include <cpprest/filestream.h>
+#include <cpprest/http_client.h>
+
+using namespace utility;
+using namespace web::http;
+using namespace web::http::client;
+using namespace concurrency::streams;
+
+/* Can pass proxy information via environment variable http_proxy.
+   Example:
+   Linux:   export http_proxy=http://192.1.8.1:8080
+ */
+
+export http_proxy=http://192.1.8.1:8080
+
+web::http::client::http_client_config client_config_for_proxy()
+{
+    web::http::client::http_client_config client_config;
+#ifdef _WIN32
+    wchar_t* pValue = nullptr;
+    std::unique_ptr<wchar_t, void (*)(wchar_t*)> holder(nullptr, [](wchar_t* p) { free(p); });
+    size_t len = 0;
+    auto err = _wdupenv_s(&pValue, &len, L"http_proxy");
+    if (pValue) holder.reset(pValue);
+    if (!err && pValue && len)
+    {
+        std::wstring env_http_proxy_string(pValue, len - 1);
+#else
+    if (const char* env_http_proxy = std::getenv("http_proxy"))
+    {
+        std::string env_http_proxy_string(env_http_proxy);
+#endif
+        if (env_http_proxy_string == U("auto"))
+            client_config.set_proxy(web::web_proxy::use_auto_discovery);
+        else
+            client_config.set_proxy(web::web_proxy(env_http_proxy_string));
+    }
+
+    return client_config;
+}
+
+#ifdef _WIN32
+int wmain(int argc, wchar_t* args[])
+#else
+int main(int argc, char* args[])
+#endif
+{
+    if (argc != 3)
+    {
+        printf("Usage: BingRequest.exe search_term output_file\n");
+        return -1;
+    }
+    const string_t searchTerm = args[1];
+    const string_t outputFileName = args[2];
+
+    // Open a stream to the file to write the HTTP response body into.
+    auto fileBuffer = std::make_shared<streambuf<uint8_t>>();
+    file_buffer<uint8_t>::open(outputFileName, std::ios::out)
+        .then([=](streambuf<uint8_t> outFile) -> pplx::task<http_response> {
+            *fileBuffer = outFile;
+
+            // Create an HTTP request.
+            // Encode the URI query since it could contain special characters like spaces.
+            http_client client(U("http://www.bing.com/"), client_config_for_proxy());
+            return client.request(methods::GET, uri_builder(U("/search")).append_query(U("q"), searchTerm).to_string());
+        })
+
+        // Write the response body into the file buffer.
+        .then([=](http_response response) -> pplx::task<size_t> {
+            printf("Response status code %u returned.\n", response.status_code());
+
+            return response.body().read_to_end(*fileBuffer);
+        })
+
+        // Close the file buffer.
+        .then([=](size_t) { return fileBuffer->close(); })
+
+        // Wait for the entire response body to be written into the file.
+        .wait();
+
+    return 0;
+}

HelloWorld.cpp

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+#include <iostream>
+
+int main()
+{
+	std::cout << "Hello World" << std::endl;
+	return 0;
+}