--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_s2sout_override/mod_s2sout_override.lua	Mon Sep 18 08:24:19 2023 -0500
@@ -0,0 +1,19 @@
+--% requires: s2sout-pre-connect-event
+
+local url = require"socket.url";
+local basic_resolver = require "net.resolvers.basic";
+
+local override_for = module:get_option(module.name, {}); -- map of host to "tcp://example.com:5269"
+
+module:hook("s2sout-pre-connect", function(event)
+	local override = override_for[event.session.to_host] or override_for[event.session.to_host:gsub("^[^.]+%.", "*.")] or override_for["*"];
+	if type(override) == "string" then
+		override = url.parse(override);
+	end
+	if type(override) == "table" and override.scheme == "tcp" and type(override.host) == "string" then
+		event.resolver = basic_resolver.new(override.host, tonumber(override.port) or 5269, override.scheme, {});
+	elseif type(override) == "table" and override.scheme == "tls" and type(override.host) == "string" then
+		event.resolver = basic_resolver.new(override.host, tonumber(override.port) or 5270, "tcp",
+			{ servername = event.session.to_host; sslctx = event.session.ssl_ctx });
+	end
+end);