Add set_proxy().

src/curl_wrapper.cpp

@@ -83,6 +83,12 @@ void CURLWrapper::set_useragent(string_view useragent)
     check(curl_easy_setopt(_connection, CURLOPT_USERAGENT, useragent.data()));
 }
 
+void CURLWrapper::set_proxy(const string_view proxy)
+{
+    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-vararg)
+    check(curl_easy_setopt(_connection, CURLOPT_PROXY, proxy.data()));
+}
+
 answer CURLWrapper::make_http_request(http_method method, string_view uri)
 {
     _buffer_headers.clear();

src/curl_wrapper.hpp

@@ -154,6 +154,18 @@ public:
      */
     void set_useragent(string_view useragent);
 
+    /*!
+     *  @brief  Set a proxy.
+     *
+     *  For more information consult [CURLOPT_PROXY(3)]
+     *  (https://curl.haxx.se/libcurl/c/CURLOPT_PROXY.html).
+     *
+     *  May throw CURLException.
+     *
+     *  @since  0.1.1
+     */
+    inline void set_proxy(string_view proxy);
+
     /*!
      *  @brief  Make a HTTP request.
      *