--- a/net/server_epoll.lua	Sun Dec 06 22:04:43 2020 +0100
+++ b/net/server_epoll.lua	Fri Jun 03 17:51:42 2022 +0200
@@ -627,22 +627,26 @@
 
 function interface:ssl_info()
 	local sock = self.conn;
-	return sock.info and sock:info();
+	if not sock.info then return nil, "not-implemented"; end
+	return sock:info();
 end
 
 function interface:ssl_peercertificate()
 	local sock = self.conn;
-	return sock.getpeercertificate and sock:getpeercertificate();
+	if not sock.getpeercertificate then return nil, "not-implemented"; end
+	return sock:getpeercertificate();
 end
 
 function interface:ssl_peerverification()
 	local sock = self.conn;
-	return sock.getpeerverification and sock:getpeerverification();
+	if not sock.getpeerverification then return nil, { { "Chain verification not supported" } }; end
+	return sock:getpeerverification();
 end
 
 function interface:ssl_peerfinished()
 	local sock = self.conn;
-	return sock.getpeerfinished and sock:getpeerfinished();
+	if not sock.getpeerfinished then return nil, "not-implemented"; end
+	return sock:getpeerfinished();
 end
 
 function interface:starttls(tls_ctx)

--- a/net/server_event.lua	Sun Dec 06 22:04:43 2020 +0100
+++ b/net/server_event.lua	Fri Jun 03 17:51:42 2022 +0200
@@ -281,19 +281,27 @@
 end
 
 function interface_mt:ssl_info()
-	return self.conn.info and self.conn:info()
+	local sock = self.conn;
+	if not sock.info then return nil, "not-implemented"; end
+	return sock:info();
 end
 
 function interface_mt:ssl_peercertificate()
-	return self.conn.getpeercertificate and self.conn:getpeercertificate()
+	local sock = self.conn;
+	if not sock.getpeercertificate then return nil, "not-implemented"; end
+	return sock:getpeercertificate();
 end
 
 function interface_mt:ssl_peerverification()
-	return self.conn.getpeerverification and self.conn:getpeerverification()
+	local sock = self.conn;
+	if not sock.getpeerverification then return nil, { { "Chain verification not supported" } }; end
+	return sock:getpeerverification();
 end
 
 function interface_mt:ssl_peerfinished()
-	return self.conn.getpeerfinished and self.conn:getpeerfinished()
+	local sock = self.conn;
+	if not sock.getpeerfinished then return nil, "not-implemented"; end
+	return sock:getpeerfinished();
 end
 
 function interface_mt:resume()

--- a/net/server_select.lua	Sun Dec 06 22:04:43 2020 +0100
+++ b/net/server_select.lua	Fri Jun 03 17:51:42 2022 +0200
@@ -363,13 +363,16 @@
 		return socket.info and socket:info()
 	end
 	handler.ssl_peercertificate = function( )
-		return socket.getpeercertificate and socket:getpeercertificate()
+		if not socket.getpeercertificate then return nil, "not-implemented"; end
+		return socket:getpeercertificate()
 	end
 	handler.ssl_peerverification = function( )
-		return socket.getpeerverification and socket:getpeerverification()
+		if not socket.getpeerverification then return nil, { { "Chain verification not supported" } }; end
+		return socket:getpeerverification();
 	end
 	handler.ssl_peerfinished = function( )
-		return socket.getpeerfinished and socket:getpeerfinished()
+		if not socket.getpeerfinished then return nil, "not-implemented"; end
+		return socket:getpeerfinished();
 	end
 	handler.send = function( _, data, i, j )
 		return send( socket, data, i, j )