From 01fc6db0c5ce2dba9e94163b43e71e383bc9b2d6 Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Thu, 15 Mar 2018 15:45:39 -0700
Subject: [PATCH] ircd::net: Disable readahead for socket's SSL_CTX.

---
 ircd/net.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ircd/net.cc b/ircd/net.cc
index 26c3c9445..a408aa1c7 100644
--- a/ircd/net.cc
+++ b/ircd/net.cc
@@ -1296,6 +1296,7 @@ ircd::net::socket::socket(asio::ssl::context &ssl,
 {
 	++count;
 	++instances;
+	SSL_set_read_ahead(this->ssl.native_handle(), false);
 }
 
 /// The dtor asserts that the socket is not open/connected requiring a
@@ -1566,9 +1567,10 @@ ircd::net::socket::wait(const wait_opts &opts,
 			// the wait. ASIO should fix this by adding a ssl::stream.wait() method
 			// which will bail out immediately in this case before passing up to the
 			// real socket wait.
+			assert(SSL_get_read_ahead(ssl.native_handle()) == 0);
 			if(SSL_peek(ssl.native_handle(), buf, sizeof(buf)) > 0)
 			{
-				handle(error_code{}, 1UL);
+				handle(error_code{}, 1UL);  //TODO: stack growth here
 				break;
 			}