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TI datasheets

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exe:
Ha-ha, now I got troubles with TI datasheets too. The server responds with "HTTP/1.1 304 Not Modified", even when just trying to download directly, without any cookies or whatever. I didn't find a way to download that file ( https://www.ti.com/lit/ds/symlink/lm317-n.pdf ).

Now I also recall that I had this issues recently. I had to reload page several times before I could download it.

amyk:

--- Quote from: exe on May 17, 2021, 06:25:58 am ---Ha-ha, now I got troubles with TI datasheets too. The server responds with "HTTP/1.1 304 Not Modified", even when just trying to download directly, without any cookies or whatever. I didn't find a way to download that file ( https://www.ti.com/lit/ds/symlink/lm317-n.pdf ).

Now I also recall that I had this issues recently. I had to reload page several times before I could download it.

--- End quote ---
Ctrl+F5 or whatever your browser uses to mean "full refresh".

exe:

--- Quote from: amyk on May 17, 2021, 01:26:51 pm ---Ctrl+F5 or whatever your browser uses to mean "full refresh".

--- End quote ---

Tried that, it didn't help. Not just that, I tried to fetch datasheet with curl, with and without cookiesm anonymous mode, no luck. Like this doesn't work for me: curl -vv 'https://www.ti.com/lit/ds/symlink/lm317-n.pdf' .

magic:
Exactly. I clicked a few links here out of curiosity and some return 304 and some return 304 or 200 depending on whether I use a browser or wget.

This response is only valid if the client requests a version newer that it already has in its cache using special HTTP syntax. Sending it to normal request is illegal. I suspect some misconfiguration, where responses between their cache servers are leaked to the client in semi-random circumstances.
|O

exe:
Ah, got it. Illegal means the webserver should not send 304 arbitrary, but only when the client provided a special header to check.

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