win32inet.InternetQueryOption

Option	Returned type
INTERNET_OPTION_CALLBACK	Python callback function
INTERNET_OPTION_CONTEXT_VALUE	Context object
INTERNET_OPTION_SEND_TIMEOUT	Int - timeout in millseconds
INTERNET_OPTION_CONTROL_SEND_TIMEOUT	Int - timeout in millseconds
INTERNET_OPTION_RECEIVE_TIMEOUT	Int - timeout in millseconds
INTERNET_OPTION_CONTROL_RECEIVE_TIMEOUT	Int - timeout in millseconds
INTERNET_OPTION_CODEPAGE	Int - Codepage of host part of URL
INTERNET_OPTION_CODEPAGE_PATH	Int - Codepage for URL
INTERNET_OPTION_CODEPAGE_EXTRA	Int - Codepage for path part of URL
INTERNET_OPTION_CONNECT_RETRIES	Int - Number of time to try to reconnect to host
INTERNET_OPTION_CONNECT_TIMEOUT	Int - Connection timeout in milliseconds
INTERNET_OPTION_CONNECTED_STATE	Int - Connection state, INTERNET_STATE_*
INTERNET_OPTION_HANDLE_TYPE	Int, INTERNET_HANDLE_TYPE_*
INTERNET_OPTION_ERROR_MASK	Int, combination of INTERNET_ERROR_MASK_*
INTERNET_OPTION_EXTENDED_ERROR	Int, ERROR_INTERNET_*
INTERNET_OPTION_FROM_CACHE_TIMEOUT	Int - Timeout in ms before cached copy is used
INTERNET_OPTION_IDN	Int, INTERNET_FLAG_IDN_*
INTERNET_OPTION_MAX_CONNS_PER_1_0_SERVER	Int
INTERNET_OPTION_MAX_CONNS_PER_SERVER	Int
INTERNET_OPTION_READ_BUFFER_SIZE	Int
INTERNET_OPTION_WRITE_BUFFER_SIZE	Int
INTERNET_OPTION_REQUEST_FLAGS	Int, combination of INTERNET_REQFLAG_*
INTERNET_OPTION_REQUEST_PRIORITY	Int
INTERNET_OPTION_SECURITY_FLAGS	Int, SECURITY_FLAG_*
INTERNET_OPTION_SECURITY_KEY_BITNESS	Int
INTERNET_OPTION_BYPASS_EDITED_ENTRY	Boolean
INTERNET_OPTION_HTTP_DECODING	Boolean
INTERNET_OPTION_IGNORE_OFFLINE	Boolean
INTERNET_OPTION_DATAFILE_NAME	String - Name of internet cache file
INTERNET_OPTION_USERNAME	String - Username passed to InternetConnect
INTERNET_OPTION_PASSWORD	String - Password passed to InternetConnect
INTERNET_OPTION_PROXY_PASSWORD	String
INTERNET_OPTION_PROXY_USERNAME	String
INTERNET_OPTION_SECONDARY_CACHE_KEY	String
INTERNET_OPTION_SECURITY_CERTIFICATE	String
INTERNET_OPTION_URL	String
INTERNET_OPTION_USER_AGENT	String
INTERNET_OPTION_CACHE_TIMESTAMPS	dict - Expiration and last modified times
INTERNET_OPTION_HTTP_VERSION	dict - HTTP_VERSION_INFO
INTERNET_OPTION_VERSION	dict - INTERNET_VERSION_INFO
INTERNET_OPTION_PARENT_HANDLE	PyHINTERNET
INTERNET_OPTION_PROXY	dict - INTERNET_PROXY_INFO
INTERNET_OPTION_DIAGNOSTIC_SOCKET_INFO	Not yet supported (INTERNET_DIAGNOSTIC_SOCKET_INFO)
INTERNET_OPTION_PER_CONNECTION_OPTION	Not yet supported (INTERNET_PER_CONN_OPTION_LIST)
INTERNET_OPTION_SECURITY_CERTIFICATE_STRUCT	Not yet supported (INTERNET_CERTIFICATE_INFO)
INTERNET_OPTION_ALTER_IDENTITY	Not supported
INTERNET_OPTION_ASYNC	Not supported
INTERNET_OPTION_ASYNC_ID	Not supported
INTERNET_OPTION_ASYNC_PRIORITY	Not supported
INTERNET_OPTION_CACHE_STREAM_HANDLE	Not supported
INTERNET_OPTION_CALLBACK_FILTER	Not supported
INTERNET_OPTION_CLIENT_CERT_CONTEXT	Not supported
INTERNET_OPTION_DATA_RECEIVE_TIMEOUT	Not supported
INTERNET_OPTION_DATA_SEND_TIMEOUT	Not supported
INTERNET_OPTION_CONNECT_BACKOFF	Not supported
INTERNET_OPTION_CONNECT_TIME	Not supported
INTERNET_OPTION_DISABLE_AUTODIAL	Not supported
INTERNET_OPTION_DISCONNECTED_TIMEOUT	Not supported
INTERNET_OPTION_IDENTITY	Not supported
INTERNET_OPTION_IDLE_STATE	Not supported
INTERNET_OPTION_KEEP_CONNECTION	Not supported
INTERNET_OPTION_LISTEN_TIMEOUT	Not supported
INTERNET_OPTION_OFFLINE_MODE	Not supported
INTERNET_OPTION_OFFLINE_SEMANTICS	Not supported
INTERNET_OPTION_POLICY	Not supported
INTERNET_OPTION_RECEIVE_THROUGHPUT	Not supported
INTERNET_OPTION_REMOVE_IDENTITY	Not supported
INTERNET_OPTION_SEND_THROUGHPUT	Not supported
INTERNET_OPTION_DATAFILE_EXT	Only valid for InternetSetOption
INTERNET_OPTION_DIGEST_AUTH_UNLOAD	Only valid for InternetSetOption
INTERNET_OPTION_END_BROWSER_SESSION	Only valid for InternetSetOption
INTERNET_OPTION_REFRESH	Only valid for InternetSetOption
INTERNET_OPTION_RESET_URLCACHE_SESSION	Only valid for InternetSetOption
INTERNET_OPTION_SETTINGS_CHANGED	Only valid for InternetSetOption

Win32 API References