fix(headers): fixed support for setting multiple header values from an iterated source; (#6885)

test/helpers/retry.js

@@ -0,0 +1,18 @@
+
+export const retryNetwork = async (fn, retries = 3, delay = 1000) => {
+  let attempt = 0, sleep;
+
+  do {
+    try {
+      return await fn()
+    } catch (err) {
+      if (err.code === 'ERR_NETWORK' && attempt++ < retries) {
+        sleep = attempt * attempt * delay;
+        console.warn(`[ERR_NETWORK]: Attempt ${attempt}/${retries}${err.config ? ' [' + err.config.url + ']' : ''} sleep [${sleep}ms]`);
+        await new Promise(resolve => setTimeout(resolve, sleep));
+      } else {
+        throw err;
+      }
+    }
+  } while (true);
+}