optional retry support

package.json

@@ -6,6 +6,7 @@
 	"files": [
 		"index.js",
 		"throttle.js",
+		"retry.js",
 		"lib",
 		"parse",
 		"format",

retry.js

@@ -0,0 +1,34 @@
+'use strict'
+
+const retry = require('p-retry')
+
+const request = require('./lib/request')
+const createClient = require('.')
+
+const defaultRetryOpts = {
+	retries: 3,
+	factor: 3,
+	minTimeout: 5 * 1000
+}
+
+const createClientWithRetry = (profile, userAgent, retryOpts = defaultRetryOpts) => {
+	const requestWithRetry = (profile, userAgent, opt, data) => {
+		const attempt = () => {
+			return request(profile, userAgent, opt, data)
+			.catch((err) => {
+				if (err.isHafasError) throw err // continue
+				if (err.code === 'ENOTFOUND') { // abort
+					const abortErr = new retry.AbortError(err)
+					Object.assign(abortErr, err)
+					throw abortErr
+				}
+				throw err // continue
+			})
+		}
+		return retry(attempt, retryOpts)
+	}
+
+	return createClient(profile, userAgent, requestWithRetry)
+}
+
+module.exports = createClientWithRetry