From 1f6a330098dce869bed26dd7080f954ec5df999c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Felix=20B=C3=BCnemann?= <Felix.Buenemann@gmail.com>
Date: Fri, 18 Oct 2019 00:15:51 +0200
Subject: [PATCH] Fix #129: Excessive memory usage streaming large files (#142)

This drops the default size auf the h2mux write buffer from 512 MB to 1 MB.
This massively reduces memory usage, since each stream has its own buffer.
---
 h2mux/h2mux.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/h2mux/h2mux.go b/h2mux/h2mux.go
index 03040324..310b79dd 100644
--- a/h2mux/h2mux.go
+++ b/h2mux/h2mux.go
@@ -19,7 +19,7 @@ const (
 	maxWindowSize            uint32        = (1 << 31) - 1 // 2^31-1 = 2147483647, max window size in http2 spec
 	defaultTimeout           time.Duration = 5 * time.Second
 	defaultRetries           uint64        = 5
-	defaultWriteBufferMaxLen int           = 1024 * 1024 * 512 // 500mb
+	defaultWriteBufferMaxLen int           = 1024 * 1024 // 1mb
 
 	SettingMuxerMagic http2.SettingID = 0x42db
 	MuxerMagicOrigin  uint32          = 0xa2e43c8b