Maybe use a :content_cb callback and inspect the first chunk using tr or a regex looking for 'binary values' and abandon the request if you find them?

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
"Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."

In reply to Re^3: LWP: Alternative to using HEAD 1st and then GET? (content sensing?) by BrowserUk
in thread LWP: Alternative to using HEAD 1st and then GET? (content sensing?) by isync

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