From c1c161d1b8d6802ad9c404c8157c95039a306b44 Mon Sep 17 00:00:00 2001
From: Caddy on hubris <root@caddy>
Date: Tue, 12 May 2026 18:10:40 +0200
Subject: [PATCH] Strip IETF resumable-upload headers for Seafile iOS app (LXC
 125)

iOS Seafile Pro 4.0.2 negotiates resumable uploads via Upload-Draft-Interop-Version: 6, but Seafile-fileserver does not understand the protocol and never returns the expected interim response; the iOS client then cancels the HTTP/2 stream after ~60s and the upload (or library-create POST) appears to fail. Strip the negotiation headers so the client falls back to normal multipart upload, and bump upstream timeouts for large transfers.
---
 Caddyfile | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/Caddyfile b/Caddyfile
index 77d0ccc..57e69e5 100644
--- a/Caddyfile
+++ b/Caddyfile
@@ -181,7 +181,6 @@ files.hubris.network {
 		dns ionos {env.IONOS_AUTH_API_TOKEN}
 	}
 	encode zstd gzip
-	# Seafile desktop client uploads large files; bump the body cap.
 	request_body {
 		max_size 10GB
 	}
@@ -189,5 +188,18 @@ files.hubris.network {
 		header_up X-Forwarded-Proto https
 		header_up X-Forwarded-Host {host}
 		header_up Host {host}
+		# Seafile iOS Pro app (>=4.0) speaks the IETF Resumable Uploads draft;
+		# the bundled seafile-fileserver does not. Strip the negotiation headers
+		# so the client falls back to a normal multipart upload.
+		header_up -Upload-Draft-Interop-Version
+		header_up -Upload-Complete
+		header_up -Upload-Offset
+		header_up -Upload-Length
+		transport http {
+			dial_timeout 30s
+			read_timeout 1h
+			write_timeout 1h
+		}
+		flush_interval -1
 	}
 }