Issue 5180 - introduce asynchronous web request

src/DefaultWebRequestCurl.cpp

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2017 eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 23 matching lines @@
       status = 0;
       expectingStatus = true;
     }
   };
 
   unsigned int ConvertErrorCode(CURLcode code)
   {
     switch (code)
     {
       case CURLE_OK:
-        return AdblockPlus::WebRequest::NS_OK;
+        return AdblockPlus::IWebRequest::NS_OK;
       case CURLE_FAILED_INIT:
-        return AdblockPlus::WebRequest::NS_ERROR_NOT_INITIALIZED;
+        return AdblockPlus::IWebRequest::NS_ERROR_NOT_INITIALIZED;
       case CURLE_UNSUPPORTED_PROTOCOL:
-        return AdblockPlus::WebRequest::NS_ERROR_UNKNOWN_PROTOCOL;
+        return AdblockPlus::IWebRequest::NS_ERROR_UNKNOWN_PROTOCOL;
       case CURLE_URL_MALFORMAT:
-        return AdblockPlus::WebRequest::NS_ERROR_MALFORMED_URI;
+        return AdblockPlus::IWebRequest::NS_ERROR_MALFORMED_URI;
       case CURLE_COULDNT_RESOLVE_PROXY:
-        return AdblockPlus::WebRequest::NS_ERROR_UNKNOWN_PROXY_HOST;
+        return AdblockPlus::IWebRequest::NS_ERROR_UNKNOWN_PROXY_HOST;
       case CURLE_COULDNT_RESOLVE_HOST:
-        return AdblockPlus::WebRequest::NS_ERROR_UNKNOWN_HOST;
+        return AdblockPlus::IWebRequest::NS_ERROR_UNKNOWN_HOST;
       case CURLE_COULDNT_CONNECT:
-        return AdblockPlus::WebRequest::NS_ERROR_CONNECTION_REFUSED;
+        return AdblockPlus::IWebRequest::NS_ERROR_CONNECTION_REFUSED;
       case CURLE_OUT_OF_MEMORY:
-        return AdblockPlus::WebRequest::NS_ERROR_OUT_OF_MEMORY;
+        return AdblockPlus::IWebRequest::NS_ERROR_OUT_OF_MEMORY;
       case CURLE_OPERATION_TIMEDOUT:
-        return AdblockPlus::WebRequest::NS_ERROR_NET_TIMEOUT;
+        return AdblockPlus::IWebRequest::NS_ERROR_NET_TIMEOUT;
       case CURLE_TOO_MANY_REDIRECTS:
-        return AdblockPlus::WebRequest::NS_ERROR_REDIRECT_LOOP;
+        return AdblockPlus::IWebRequest::NS_ERROR_REDIRECT_LOOP;
       case CURLE_GOT_NOTHING:
-        return AdblockPlus::WebRequest::NS_ERROR_NO_CONTENT;
+        return AdblockPlus::IWebRequest::NS_ERROR_NO_CONTENT;
       case CURLE_SEND_ERROR:
-        return AdblockPlus::WebRequest::NS_ERROR_NET_RESET;
+        return AdblockPlus::IWebRequest::NS_ERROR_NET_RESET;
       case CURLE_RECV_ERROR:
-        return AdblockPlus::WebRequest::NS_ERROR_NET_RESET;
+        return AdblockPlus::IWebRequest::NS_ERROR_NET_RESET;
       default:
-        return AdblockPlus::WebRequest::NS_CUSTOM_ERROR_BASE + code;
+        return AdblockPlus::IWebRequest::NS_CUSTOM_ERROR_BASE + code;
     }
   }
 
   size_t ReceiveData(char* ptr, size_t size, size_t nmemb, void* userdata)
   {
     std::stringstream* stream = static_cast<std::stringstream*>(userdata);
     stream->write(ptr, size * nmemb);
     return nmemb;
   }
 
@@ skipping 34 matching lines @@
 
       if (headerEnd)
         data->headers.push_back(header.substr(0, headerEnd));
       else
         data->expectingStatus = true;
     }
     return nmemb;
   }
 }
 
-AdblockPlus::ServerResponse AdblockPlus::DefaultWebRequest::GET(
+AdblockPlus::ServerResponse AdblockPlus::DefaultWebRequestSync::GET(
     const std::string& url, const HeaderList& requestHeaders) const
 {
   AdblockPlus::ServerResponse result;
-  result.status = NS_ERROR_NOT_INITIALIZED;
+  result.status = IWebRequest::NS_ERROR_NOT_INITIALIZED;
   result.responseStatus = 0;
 
   CURL *curl = curl_easy_init();
   if (curl)
   {
     std::stringstream responseText;
     HeaderData headerData;
     curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
     curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
     curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, ReceiveData);
@@ skipping 40 matching lines @@
         }
       }
     }
 
     if (headerList)
       curl_slist_free_all(headerList);
     curl_easy_cleanup(curl);
   }
   return result;
 }