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Re: How to check if machine has network connectivity using libcurl api reliably?

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From: Daniel Stenberg via curl-library <curl-library_at_lists.haxx.se>
Date: Tue, 22 Nov 2022 10:23:51 +0100 (CET)

On Tue, 22 Nov 2022, Dipak B via curl-library wrote:

> How can an Windows application integrated with libcurl find out reliably
> and quickly if the machine has any kind of network connectivity?
>
> Further there can be situations were Wifi network is available but Internet
> connection / link is not working.
>
> In such a situation how does one find if Internet connection is available
> using libcurl?

If you by "network connectivity" mean "connectivity to a known HTTP server you
have reasonable expectations to exist and respond", then you can just do a
HEAD request to that server with a reasonably short timeout and check that it
succeeds.

If you want to check something more fine-grained than so, then maybe libcurl
is not the right answer for you. libcurl is a transfer library, not a network
connectivity check library.

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Received on 2022-11-22

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