1 files changed, 90 insertions, 0 deletions
diff --git a/storage/connect/restget.cpp b/storage/connect/restget.cpp
new file mode 100644
index 00000000..29dae230
--- /dev/null
+++ b/storage/connect/restget.cpp
@@ -0,0 +1,90 @@
+/************* Restget C++ Program Source Code File (.CPP) *************/
+/* Adapted from the sample program of the Casablanca tutorial.         */
+/* Copyright Olivier Bertrand 2019.                                    */
+/***********************************************************************/
+#include <cpprest/filestream.h>
+#include <cpprest/http_client.h>
+
+using namespace utility::conversions; // String conversions utilities
+using namespace web;                  // Common features like URIs.
+using namespace web::http;            // Common HTTP functionality
+using namespace web::http::client;    // HTTP client features
+using namespace concurrency::streams; // Asynchronous streams
+
+typedef const char* PCSZ;
+
+extern "C" int restGetFile(char* m, bool xt, PCSZ http, PCSZ uri, PCSZ fn);
+
+/***********************************************************************/
+/*  Make a local copy of the requested file.                           */
+/***********************************************************************/
+int restGetFile(char *m, bool xt, PCSZ http, PCSZ uri, PCSZ fn)
+{
+  int  rc = 0;
+  auto fileStream = std::make_shared<ostream>();
+
+  if (!http || !fn) {
+    //strcpy(g->Message, "Missing http or filename");
+		strcpy(m, "Missing http or filename");
+		return 2;
+  } // endif
+
+	if (xt)
+		fprintf(stderr, "restGetFile: fn=%s\n", fn);
+
+  // Open stream to output file.
+  pplx::task<void> requestTask = fstream::open_ostream(to_string_t(fn))
+    .then([=](ostream outFile) {
+      *fileStream= outFile;
+
+			if (xt)
+				fprintf(stderr, "Outfile isopen=%d\n", outFile.is_open());
+
+      // Create http_client to send the request.
+      http_client client(to_string_t(http));
+
+      if (uri) {
+        // Build request URI and start the request.
+        uri_builder builder(to_string_t(uri));
+        return client.request(methods::GET, builder.to_string());
+      } else
+        return client.request(methods::GET);
+    })
+
+    // Handle response headers arriving.
+    .then([=](http_response response) {
+			if (xt)
+				fprintf(stderr, "Received response status code:%u\n",
+                                  response.status_code());
+
+      // Write response body into the file.
+      return response.body().read_to_end(fileStream->streambuf());
+    })
+
+    // Close the file stream.
+    .then([=](size_t n) {
+			if (xt)
+				fprintf(stderr, "Return size=%zu\n", n);
+
+      return fileStream->close();
+    });
+
+  // Wait for all the outstanding I/O to complete and handle any exceptions
+  try {
+		if (xt)
+			fprintf(stderr, "Waiting\n");
+
+		requestTask.wait();
+  } catch (const std::exception &e) {
+		if (xt)
+			fprintf(stderr, "Error exception: %s\n", e.what());
+
+		sprintf(m, "Error exception: %s", e.what());
+		rc= 1;
+  } // end try/catch
+
+	if (xt)
+		fprintf(stderr, "restget done: rc=%d\n", rc);
+
+  return rc;
+} // end of restGetFile