Hey
I'm using the BIO abstraction for reading/writing to sockets - a small
part of the BIO_read method is unclear: For a blocking socket, will the
BIO_read call block until the length provided in the call is filled in
the buffer, or will it return as soon as it managed to read anything
from the socket?
I see that the underlying implementation uses recv() - recv blocks
until something is available: when something is available for reading,
read up to len bytes and copy it to the provided buffer, then return,
i.e. the length is used as a maximum value. From reading the openssl
code I think that BIO_read behaves in the same way as recv - which means
that if I want to read a specific number of bytes (no more, no less), I
need to loop until I get everything I need. Can anyone confirm this ?
Thank you,
--
Laura
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