can GET some pages

examples/http_client/http_client.cpp

@@ -13,7 +13,25 @@ using namespace ix;
 void run(const std::string& url)
 {
     HttpClient httpClient;
-    httpClient.get(url);
+    bool verbose = true;
+    auto out = httpClient.get(url, verbose);
+    auto errorCode = std::get<0>(out);
+    auto headers = std::get<1>(out);
+    auto payload = std::get<2>(out);
+    auto errorMsg = std::get<3>(out);
+
+    for (auto it : headers)
+    {
+        std::cout << it.first << ": " << it.second << std::endl;
+    }
+
+    std::cout << "error code: " << errorCode << std::endl;
+    if (!errorMsg.empty())
+    {
+        std::cout << "error message: " << errorMsg << std::endl;
+    }
+
+    std::cout << "payload: " << payload << std::endl;
 }