Add User-Agent header (#2602)

src/remote/activitypub/request.ts

@@ -27,6 +27,7 @@ export default (user: ILocalUser, url: string, object: any) => new Promise((reso
 		method: 'POST',
 		path: pathname + search,
 		headers: {
+			'User-Agent': config.user_agent,
 			'Content-Type': 'application/activity+json',
 			'Digest': `SHA-256=${hash}`
 		}

src/remote/activitypub/resolver.ts

@@ -1,7 +1,7 @@
 import * as request from 'request-promise-native';
 import * as debug from 'debug';
 import { IObject } from './type';
-//import config from '../../config';
+import config from '../../config';
 
 const log = debug('misskey:activitypub:resolver');
 
@@ -51,6 +51,7 @@ export default class Resolver {
 		const object = await request({
 			url: value,
 			headers: {
+				'User-Agent': config.user_agent,
 				Accept: 'application/activity+json, application/ld+json'
 			},
 			json: true