wallet2_api: implement runtime proxy configuration

src/net/parse.cpp

@@ -122,4 +122,39 @@ namespace net
 
         return {epee::net_utils::ipv4_network_subnet{ip, (uint8_t)mask}};
     }
+
+    expect<boost::asio::ip::tcp::endpoint> get_tcp_endpoint(const boost::string_ref address)
+    {
+        uint16_t port = 0;
+        expect<epee::net_utils::network_address> parsed = get_network_address(address, port);
+        if (!parsed)
+        {
+            return parsed.error();
+        }
+
+        boost::asio::ip::tcp::endpoint result;
+        switch (parsed->get_type_id())
+        {
+            case epee::net_utils::ipv4_network_address::get_type_id():
+            {
+                const auto &ipv4 = parsed->as<epee::net_utils::ipv4_network_address>();
+                result = boost::asio::ip::tcp::endpoint(boost::asio::ip::address_v4(ipv4.ip()), ipv4.port());
+                break;
+            }
+            case epee::net_utils::ipv6_network_address::get_type_id():
+            {
+                const auto &ipv6 = parsed->as<epee::net_utils::ipv6_network_address>();
+                result = boost::asio::ip::tcp::endpoint(ipv6.ip(), ipv6.port());
+                break;
+            }
+            default:
+                return make_error_code(net::error::unsupported_address);
+        }
+        if (result.port() == 0)
+        {
+            return make_error_code(net::error::invalid_port);
+        }
+
+        return result;
+    }
 }