On Tue, 12 Jun 2012, Felix E. Klee wrote:
Or to rephrase my question: When I do something blocking, will "the OS" continue fetching data, for example into some buffer, which is then emptied when calling `curl_multi_socket_action()`?
Generally, your machine will still receive data in the kernel even though you do a blocking all in user-space, at least to some extent - yes. But if you don't drain that data within shortly it will of course stop receiving more.
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