libquvi uses libcurl for accessing the Internet.
See the Environment variables for notes about libcurl supported proxy environment variables. By default, libcurl will use the environment variable values if they have been set.
libquvi may use libproxy to detect the system proxy settings, and then set them to be used with libcurl. This feature is not enabled by default, the application must set the QUVI_OPTION_AUTOPROXY to QUVI_TRUE to enable it.
If your application must set the proxy explicitly:
Refer to the libcurl curl_easy_setopt C API reference documentation for more details about using this option.