From b3d4f18175418504965dfc64c1d26c16c5696629 Mon Sep 17 00:00:00 2001
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 <67428053+kakkokari-gtyih@users.noreply.github.com>
Date: Sat, 17 Aug 2024 18:25:46 +0900
Subject: [PATCH] Update
 packages/backend/src/core/activitypub/ApRequestService.ts
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cherry picked from commit 129af061989f535ab4c79f497ba55cc5f6bf0385

Co-authored-by: かっこかり <67428053+kakkokari-gtyih@users.noreply.github.com>
---
 packages/backend/src/core/activitypub/ApRequestService.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/backend/src/core/activitypub/ApRequestService.ts b/packages/backend/src/core/activitypub/ApRequestService.ts
index b553708a8..5d3ae0a9e 100644
--- a/packages/backend/src/core/activitypub/ApRequestService.ts
+++ b/packages/backend/src/core/activitypub/ApRequestService.ts
@@ -202,7 +202,9 @@ export class ApRequestService {
 		});
 
 		//#region リクエスト先がhtmlかつactivity+jsonへのalternate linkタグがあるとき
-		if (res.headers.get('Content-type')?.startsWith('text/html;') && _followAlternate) {
+		const contentType = res.headers.get('content-type');
+
+		if ((contentType === 'text/html' || contentType?.startsWith('text/html;')) && _followAlternate) {
 			const html = await res.text();
 			const fragment = JSDOM.fragment(html);