# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1552305651 -3600
# Node ID 9aea8dbb105dc8357e6a9b6fa223d213dfe4b79f
# Parent  6ea3cafb6ac3c18f5673eca1d825cc37eefd1f5c
net.server: Only add alternate SNI contexts if at least one is provided

Fixes use of <starttls/> when a client sends SNI, which would send no certificate otherwise.

diff -r 6ea3cafb6ac3 -r 9aea8dbb105d net/server_epoll.lua
--- a/net/server_epoll.lua	Sun Mar 10 19:58:28 2019 +0100
+++ b/net/server_epoll.lua	Mon Mar 11 13:00:51 2019 +0100
@@ -512,7 +512,7 @@
 		if conn.sni then
 			if self.servername then
 				conn:sni(self.servername);
-			elseif self._server and self._server.hosts then
+			elseif self._server and type(self._server.hosts) == "table" and next(self._server.hosts) ~= nil then
 				conn:sni(self._server.hosts, true);
 			end
 		end
diff -r 6ea3cafb6ac3 -r 9aea8dbb105d net/server_event.lua
--- a/net/server_event.lua	Sun Mar 10 19:58:28 2019 +0100
+++ b/net/server_event.lua	Mon Mar 11 13:00:51 2019 +0100
@@ -168,7 +168,7 @@
 	if self.conn.sni then
 		if self.servername then
 			self.conn:sni(self.servername);
-		elseif self._server and self._server.hosts then
+		elseif self._server and type(self._server.hosts) == "table" and next(self._server.hosts) ~= nil then
 			self.conn:sni(self._server.hosts, true);
 		end
 	end
diff -r 6ea3cafb6ac3 -r 9aea8dbb105d net/server_select.lua
--- a/net/server_select.lua	Sun Mar 10 19:58:28 2019 +0100
+++ b/net/server_select.lua	Mon Mar 11 13:00:51 2019 +0100
@@ -637,7 +637,7 @@
 			if socket.sni then
 				if self.servername then
 					socket:sni(self.servername);
-				elseif self.server() and self.server().hosts then
+				elseif self._server and type(self._server.hosts) == "table" and next(self._server.hosts) ~= nil then
 					socket:sni(self.server().hosts, true);
 				end
 			end