From dea39030bcf882c879c724d6b4d803735424e1dd Mon Sep 17 00:00:00 2001
From: Nikolay Kim <fafhrd91@gmail.com>
Date: Thu, 8 Nov 2018 20:38:40 -0800
Subject: [PATCH] properly handle upgrade header if content-length header is
 set

---
 src/h1/decoder.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/h1/decoder.rs b/src/h1/decoder.rs
index cfa0879d..472e2993 100644
--- a/src/h1/decoder.rs
+++ b/src/h1/decoder.rs
@@ -141,6 +141,13 @@ impl Decoder for RequestDecoder {
                             }
                             header::UPGRADE => {
                                 has_upgrade = true;
+                                // check content-length, some clients (dart)
+                                // sends "content-length: 0" with websocket upgrade
+                                if let Ok(val) = value.to_str() {
+                                    if val == "websocket" {
+                                        content_length = None;
+                                    }
+                                }
                             }
                             _ => (),
                         }