From 29139e9edaa5b0da69a4d07d1e955de62aea0e8e Mon Sep 17 00:00:00 2001
From: Leonid Bugaev <leonsbox@gmail.com>
Date: Fri, 10 Aug 2018 21:34:00 +0500
Subject: [PATCH] Fix prefixer panic when body is too small

---
 http_prettifier.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/http_prettifier.go b/http_prettifier.go
index 6f585c7..dcfebba 100644
--- a/http_prettifier.go
+++ b/http_prettifier.go
@@ -16,6 +16,11 @@ func prettifyHTTP(p []byte) []byte {
 	body := p[headSize:]
 
 	headersPos := proto.MIMEHeadersEndPos(body)
+
+	if headersPos < 5 || headersPos > len(body) {
+		return p
+	}
+
 	headers := body[:headersPos]
 	content := body[headersPos:]