From c40beb522721079d50ac693d74f431bb97768869 Mon Sep 17 00:00:00 2001
From: Martin Michelsen <fuzziqersoftware+g@gmail.com>
Date: Thu, 17 Mar 2022 20:14:56 -0700
Subject: [PATCH] add missing include on linux

---
 src/ProxyServer.hh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/ProxyServer.hh b/src/ProxyServer.hh
index 2e505f60..e510b466 100644
--- a/src/ProxyServer.hh
+++ b/src/ProxyServer.hh
@@ -5,6 +5,7 @@
 #include <map>
 #include <unordered_map>
 #include <unordered_set>
+#include <functional>
 #include <vector>
 #include <string>
 #include <memory>