From 1ee2a1913e79e010733991d8373b2517abf0d91b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Bj=C3=B6rklund?= <mbj4668@gmail.com>
Date: Mon, 19 Apr 2021 20:03:57 +0200
Subject: Handle any zero-sized Data in http:data with fin

Amended to make the test case hit the problem.
---
 src/gun_http.erl | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/gun_http.erl b/src/gun_http.erl
index d928b18..b38cc74 100644
--- a/src/gun_http.erl
+++ b/src/gun_http.erl
@@ -692,10 +692,10 @@ data(State=#http_state{socket=Socket, transport=Transport, version=Version,
 			DataLength = iolist_size(Data),
 			case Out of
 				body_chunked when Version =:= 'HTTP/1.1', IsFin =:= fin ->
-					case Data of
-						<<>> ->
+					if
+						DataLength =:= 0 ->
 							Transport:send(Socket, cow_http_te:last_chunk());
-						_ ->
+						true ->
 							Transport:send(Socket, [
 								cow_http_te:chunk(Data),
 								cow_http_te:last_chunk()
-- 
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