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-rw-r--r--internal/middleware/cors.go5
1 files changed, 5 insertions, 0 deletions
diff --git a/internal/middleware/cors.go b/internal/middleware/cors.go
index 1b7747c3a..22e2e81d5 100644
--- a/internal/middleware/cors.go
+++ b/internal/middleware/cors.go
@@ -54,6 +54,11 @@ func CORS() gin.HandlerFunc {
// needed to pass oauth bearer tokens
"Authorization",
+ // Some clients require this; see:
+ // - https://docs.joinmastodon.org/methods/statuses/#headers
+ // - https://github.com/superseriousbusiness/gotosocial/issues/1664
+ "Idempotency-Key",
+
// needed for websocket upgrade requests
"Upgrade",
"Sec-WebSocket-Extensions",