tree 1c867137daf53bc2e73d16d260bbe3752f15a87e
parent 5e3dfd279f69d8d80c69f2001ac7e31c56cc0ad7
author Maxim Dounin <mdounin@mdounin.ru> 1496064869 +0300
committer Maxim Dounin <mdounin@mdounin.ru> 1496064869 +0300

SSL: set TCP_NODELAY on SSL connections before handshake.

With OpenSSL 1.1.0+, the workaround for handshake buffer size as introduced
in a720f0b0e083 (ticket #413) no longer works, as OpenSSL no longer exposes
handshake buffers, see https://github.com/openssl/openssl/commit/2e7dc7cd688.
Moreover, it is no longer possible to adjust handshake buffers at all now.

To avoid additional RTT if handshake uses more than 4k we now set TCP_NODELAY
on SSL connections before handshake.  While this still results in sub-optimal
network utilization due to incomplete packets being sent, it seems to be
better than nothing.