INTERNET_PER_CONN_OPTIONA structure (wininet.h)

Article
03/13/2023

Contains the value of an option.

Syntax

typedef struct {
  DWORD dwOption;
  union {
    DWORD    dwValue;
    LPSTR    pszValue;
    FILETIME ftValue;
  } Value;
} INTERNET_PER_CONN_OPTIONA, *LPINTERNET_PER_CONN_OPTIONA;

Members

dwOption

Option to be queried or set. This member can be one of the following values.

Value	Meaning
INTERNET_PER_CONN_AUTOCONFIG_URL	Sets or retrieves a string containing the URL to the automatic configuration script.
INTERNET_PER_CONN_AUTODISCOVERY_FLAGS	Sets or retrieves the automatic discovery settings. The Value member will contain one or more of the following values: AUTO_PROXY_FLAG_ALWAYS_DETECT Always automatically detect settings. AUTO_PROXY_FLAG_CACHE_INIT_RUN Indicates that the cached results of the automatic proxy configuration script should be used, instead of actually running the script, unless the cached file has expired. AUTO_PROXY_FLAG_DETECTION_RUN Automatic detection has been run at least once on this connection. AUTO_PROXY_FLAG_DETECTION_SUSPECT Not currently supported. AUTO_PROXY_FLAG_DONT_CACHE_PROXY_RESULT Do not allow the caching of the result of the automatic proxy configuration script. AUTO_PROXY_FLAG_MIGRATED The setting was migrated from a Microsoft Internet Explorer 4.0 installation, and automatic detection should be attempted once. AUTO_PROXY_FLAG_USER_SET The user has explicitly set the automatic detection.
INTERNET_PER_CONN_FLAGS	Sets or retrieves the connection type. The Value member will contain one or more of the following values: PROXY_TYPE_DIRECT The connection does not use a proxy server. PROXY_TYPE_PROXY The connection uses an explicitly set proxy server. PROXY_TYPE_AUTO_PROXY_URL The connection downloads and processes an automatic configuration script at a specified URL. PROXY_TYPE_AUTO_DETECT The connection automatically detects settings.
INTERNET_PER_CONN_PROXY_BYPASS	Sets or retrieves a string containing the URLs that do not use the proxy server.
INTERNET_PER_CONN_PROXY_SERVER	Sets or retrieves a string containing the proxy servers.
INTERNET_PER_CONN_AUTOCONFIG_SECONDARY_URL	Chained autoconfig URL. Used when the primary autoconfig URL points to an INS file that sets a second autoconfig URL for proxy information.
INTERNET_PER_CONN_AUTOCONFIG_RELOAD_DELAY_MINS	of minutes until automatic refresh of autoconfig URL by autodiscovery.
INTERNET_PER_CONN_AUTOCONFIG_LAST_DETECT_TIME	Read only option. Returns the time the last known good autoconfig URL was found using autodiscovery.
INTERNET_PER_CONN_AUTOCONFIG_LAST_DETECT_URL	Read only option. Returns the last known good URL found using autodiscovery.

Windows 7 and later:

Clients that support Internet Explorer 8 should query the connection type using INTERNET_PER_CONN_FLAGS_UI. If this query fails, then the system is running a previous version of Internet Explorer and the client should query again with INTERNET_PER_CONN_FLAGS.

Restore the connection type using INTERNET_PER_CONN_FLAGS regardless of the version of Internet Explorer.

Value	Meaning
INTERNET_PER_CONN_FLAGS_UI	Sets or retrieves the connection type. The Value member will contain one or more of the following values: PROXY_TYPE_DIRECT The connection does not use a proxy server. PROXY_TYPE_PROXY The connection uses an explicitly set proxy server. PROXY_TYPE_AUTO_PROXY_URL The connection downloads and processes an automatic configuration script at a specified URL. PROXY_TYPE_AUTO_DETECT The connection automatically detects settings.

Value

Meaning

INTERNET_PER_CONN_FLAGS_UI

Sets or retrieves the connection type. The Value member will contain one or more of the following values:

PROXY_TYPE_DIRECT: The connection does not use a proxy server.
PROXY_TYPE_PROXY: The connection uses an explicitly set proxy server.
PROXY_TYPE_AUTO_PROXY_URL: The connection downloads and processes an automatic configuration script at a specified URL.
PROXY_TYPE_AUTO_DETECT: The connection automatically detects settings.

Value

Union that contains the value for the option. It can be any one of the following types depending on the value of dwOption:

dwValue

Unsigned long integer value.

pszValue

Pointer to a string value.

ftValue

A FILETIME structure.

Value.dwValue

Value.pszValue

Value.ftValue

Remarks

In Internet Explorer 5, only the ANSI versions of InternetQueryOption and InternetSetOption will work with the INTERNET_PER_CONN_OPTION structure. The Unicode versions will support the INTERNET_PER_CONN_OPTION structure in later versions of Internet Explorer.

For queries that return strings, InternetQueryOption allocates the memory for the pszValue member of the structure. The calling application must free this memory using the GlobalFree function when it has finished using the string.

Note WinINet does not support server implementations. In addition, it should not be used from a service. For server implementations or services use Microsoft Windows HTTP Services (WinHTTP).

Note

The wininet.h header defines INTERNET_PER_CONN_OPTION as an alias that automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that is not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	wininet.h

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