From 775a42989b4edc807525dbfec1350e05811efb24 Mon Sep 17 00:00:00 2001
From: Natalie Weizenbaum <nweiz@google.com>
Date: Tue, 20 Mar 2018 13:24:05 -0700
Subject: [PATCH] Retry HTTP requests when they fail due to IO errors

Closes #1826
---
 lib/src/http.dart | 7 +++++++
 pubspec.yaml      | 2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/src/http.dart b/lib/src/http.dart
index 9f1101270..6ddf80861 100644
--- a/lib/src/http.dart
+++ b/lib/src/http.dart
@@ -228,6 +228,13 @@ final httpClient = new ThrottleClient(
     new _ThrowingClient(new RetryClient(_pubClient,
         retries: 5,
         when: (response) => const [502, 503, 504].contains(response.statusCode),
+        whenError: (error, stackTrace) {
+          if (error is! IOException) return false;
+
+          var chain = new Chain.forTrace(stackTrace);
+          log.io("HTTP error:\n$error\n\n${chain.terse}");
+          return true;
+        },
         delay: (retryCount) {
           if (retryCount < 3) {
             // Retry quickly a couple times in case of a short transient error.
diff --git a/pubspec.yaml b/pubspec.yaml
index 9c6099574..39781010b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -15,7 +15,7 @@ dependencies:
   glob: "^1.0.0"
   http: "^0.11.0"
   http_multi_server: ">=1.0.0 <3.0.0"
-  http_retry: "^0.1.0"
+  http_retry: "^0.1.1"
   http_throttle: "^1.0.0"
   json_rpc_2: "^2.0.0"
   meta: "^1.1.0"