From 2eaf28d3876c1ebcbf31d843e77f809e0c25aefb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= <essen@ninenines.eu>
Date: Wed, 25 Mar 2020 11:22:59 +0100
Subject: Fix host/:authority header when connecting to an IPv6 address

---
 src/gun_http.erl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/gun_http.erl')

diff --git a/src/gun_http.erl b/src/gun_http.erl
index 401e23a..dd48c42 100644
--- a/src/gun_http.erl
+++ b/src/gun_http.erl
@@ -605,7 +605,8 @@ send_request(State=#http_state{socket=Socket, transport=Transport, version=Versi
 host_header(Transport, Host0, Port) ->
 	Host = case Host0 of
 		{local, _SocketPath} -> <<>>;
-		Tuple when is_tuple(Tuple) -> inet:ntoa(Tuple);
+		Tuple when tuple_size(Tuple) =:= 8 -> [$[, inet:ntoa(Tuple), $]]; %% IPv6.
+		Tuple when tuple_size(Tuple) =:= 4 -> inet:ntoa(Tuple); %% IPv4.
 		Atom when is_atom(Atom) -> atom_to_list(Atom);
 		_ -> Host0
 	end,
-- 
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