From 284152ba25ca74ff62690314b5aa6ffaee17b4fc Mon Sep 17 00:00:00 2001
From: Kim Alvefur <zash@zash.se>
Date: Fri, 12 Oct 2018 16:21:16 +0200
Subject: util.dependencies: Add compat code for normalization of socket
 constructors

Old LuaSocket had only tcp() which was IPv4-only. LuaSocket ~3.0 adds a
tcp6() that creates a IPv6 socket. Some version moves tcp() to tcp4()
and adds an IP-version-agnostic tcp() constructor.
---
 util/dependencies.lua | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'util')

diff --git a/util/dependencies.lua b/util/dependencies.lua
index 9b0afd77..8dc867e8 100644
--- a/util/dependencies.lua
+++ b/util/dependencies.lua
@@ -77,6 +77,10 @@ local function check_dependencies()
 				["Source"] = "http://www.tecgraf.puc-rio.br/~diego/professional/luasocket/";
 			});
 		fatal = true;
+	elseif not socket.tcp4 then
+		-- COMPAT LuaSocket before being IP-version agnostic
+		socket.tcp4 = socket.tcp;
+		socket.udp4 = socket.udp;
 	end
 
 	local lfs, err = softreq "lfs"
-- 
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