[gnutls-devel] GnuTLS | gnutls-cli in pipes messes up the i/o stream (#1037)

[Development of GNU's TLS library]

Björn Jacke created an issue: https://gitlab.com/gnutls/gnutls/-/issues/1037



I recently added gnutls-cli support to the rsync-ssl wrapper script but
gnutls-cli turns out to mess up the i/o stream.

To show you the effect I attach the [rsync-ssl](/uploads/9fd0318c67c1c9f530b65163940fbead/rsync-ssl) script.

If you run it like

./rsync-ssl --type=gnutls -ai download.samba.org::gnokii /tmp/testdir/

You will probably see already letters from the rsync welcome banner be
scrambled. Later on the rsync protocol stream will break.

If you run the same command with --type=openssl then there will be no
error. Is there some blocking I/O issue with gnutls-cli in terminal mode?

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