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Microsoft.XMLHTTP takes from the cache
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From
19/10/2001 13:13:32
 
 
To
19/10/2001 11:26:31
General information
Forum:
Visual FoxPro
Category:
Internet applications
Miscellaneous
Thread ID:
00570570
Message ID:
00570993
Views:
33
>>>>>>>When using the Microsoft.XMLHTTP object to query a Web server, I have found that if I issue the same transaction, the second one will be taken from the cache. How can I force it to go get the data from the server all the time?
>>[...]
>>>>seen in the literature:
>>>>
loHTTP.setRequestHeader("Cache-Control","no-cache")
>>>>loHTTP.setRequestHeader("Pragma","no-cache")
>>>
>>>This gives OLE IDispatch exception code 0 from MSXML.3.DLL. Unspecified error.
>>
>>Well, it doesn't happen that way in this side of the Atlantic. Can't you test it under alternative conditions? (just the first header || other machine || same machine post-reboot).
>
>Ok, it does work if I place those lines after the Open(). Well, I mean, I do not get an error.
>
>However, the result is the same. It reads from the cache.

You're right, XMLHTTP keeps reading from its cache. To prevent this, and if your app is running on a NT-based server, you may switch to
loHttp = createobject("MSXML2.ServerXMLHTTP")
bye
----------------------------------
António Tavares Lopes
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