WinInet to WinHTTP -- Where is INTERNET_FLAG_RELOAD??

[Jonathan]

With WinInet, one has to worry about caching responses locally. Is that an
issue in WinHTTP? I noticed that there are only proxy cache options in
WinHTTP and via script one does not appear to have even that (without
writing raw headers).

Thanks,
Jonathan

[Stephen Sulzer [Microsoft]]

Hello Jonathan,

WinHTTP does not implement a local HTTP response cache. The only cache
options, as you have noted, are related to suppressing the proxy server (if
there is one) from replying with a response from its cache.

You can instruct the proxy server to not use its cache by adding "Pragma:
No-Cache" and "Cache-Control: No-Cache" headers to your HTTP request. Or you
can use the WINHTTP_FLAG_BYPASS_PROXY_CACHE flag with the WinHttpOpenRequest
Win32 API.

Regards,

Stephen Sulzer
Microsoft Corporation

This posting is provided "AS IS" with no warranties, and confers no rights.

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