From 4bf44b7d657da540b25db8ac3e8906641c4242bd Mon Sep 17 00:00:00 2001
From: Roman Chvanikov <chvanikoff@pm.me>
Date: Sat, 1 Aug 2020 10:04:25 +0300
Subject: [PATCH] Don't override user-agent header if it's been set

---
 lib/pleroma/http/request_builder.ex | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/pleroma/http/request_builder.ex b/lib/pleroma/http/request_builder.ex
index 2fc876d92..8a44a001d 100644
--- a/lib/pleroma/http/request_builder.ex
+++ b/lib/pleroma/http/request_builder.ex
@@ -34,10 +34,12 @@ def url(request, u), do: %{request | url: u}
   @spec headers(Request.t(), Request.headers()) :: Request.t()
   def headers(request, headers) do
     headers_list =
-      if Pleroma.Config.get([:http, :send_user_agent]) do
+      with true <- Pleroma.Config.get([:http, :send_user_agent]),
+           nil <- Enum.find(headers, fn {key, _val} -> String.downcase(key) == "user-agent" end) do
         [{"user-agent", Pleroma.Application.user_agent()} | headers]
       else
-        headers
+        _ ->
+          headers
       end
 
     %{request | headers: headers_list}