Use node-fetch instead of request (#6228)

* requestをnode-fetchになど

* format

* fix error

* t

* Fix test

src/remote/activitypub/request.ts

@@ -1,19 +1,12 @@
 import * as https from 'https';
 import { sign } from 'http-signature';
 import * as crypto from 'crypto';
-import * as cache from 'lookup-dns-cache';
 
 import config from '../../config';
 import { ILocalUser } from '../../models/entities/user';
 import { UserKeypairs } from '../../models';
 import { ensure } from '../../prelude/ensure';
-import { HttpsProxyAgent } from 'https-proxy-agent';
-
-const agent = config.proxy
-	? new HttpsProxyAgent(config.proxy)
-	: new https.Agent({
-			lookup: cache.lookup,
-		});
+import { httpsAgent } from '../../misc/fetch';
 
 export default async (user: ILocalUser, url: string, object: any) => {
 	const timeout = 10 * 1000;
@@ -32,7 +25,7 @@ export default async (user: ILocalUser, url: string, object: any) => {
 
 	await new Promise((resolve, reject) => {
 		const req = https.request({
-			agent,
+			agent: httpsAgent,
 			protocol,
 			hostname,
 			port,

src/remote/activitypub/resolver.ts

@@ -1,10 +1,8 @@
-import * as request from 'request-promise-native';
+import { getJson } from '../../misc/fetch';
 import { IObject, isCollectionOrOrderedCollection, ICollection, IOrderedCollection } from './type';
-import config from '../../config';
 
 export default class Resolver {
 	private history: Set<string>;
-	private timeout = 10 * 1000;
 
 	constructor() {
 		this.history = new Set();
@@ -41,24 +39,7 @@ export default class Resolver {
 
 		this.history.add(value);
 
-		const object = await request({
-			url: value,
-			proxy: config.proxy,
-			timeout: this.timeout,
-			forever: true,
-			headers: {
-				'User-Agent': config.userAgent,
-				Accept: 'application/activity+json, application/ld+json'
-			},
-			json: true
-		}).catch(e => {
-			const message = `${e.name}: ${e.message ? e.message.substr(0, 200) : undefined}, url=${value}`;
-			throw {
-				name: e.name,
-				statusCode: e.statusCode,
-				message,
-			};
-		});
+		const object = await getJson(value, 'application/activity+json, application/ld+json');
 
 		if (object == null || (
 			Array.isArray(object['@context']) ?

src/remote/webfinger.ts

@@ -1,5 +1,4 @@
-import config from '../config';
-import * as request from 'request-promise-native';
+import { getJson } from '../misc/fetch';
 import { query as urlQuery } from '../prelude/url';
 
 type ILink = {
@@ -15,17 +14,7 @@ type IWebFinger = {
 export default async function(query: string): Promise<IWebFinger> {
 	const url = genUrl(query);
 
-	return await request({
-		url,
-		proxy: config.proxy,
-		timeout: 10 * 1000,
-		forever: true,
-		headers: {
-			'User-Agent': config.userAgent,
-			Accept: 'application/jrd+json, application/json'
-		},
-		json: true
-	});
+	return await getJson(url, 'application/jrd+json, application/json');
 }
 
 function genUrl(query: string) {