From 4b7dcbf188efbfe1c16e3012adc5b6babcb67418 Mon Sep 17 00:00:00 2001
From: Flouse <flouse@gmail.com>
Date: Tue, 11 May 2021 04:31:55 +0000
Subject: [PATCH] fix(isRollupCellExits): curl retry on connrefused,
 considering ECONNREFUSED as a transient error(network issues)

see also:
https://github.com/appropriate/docker-curl/issues/5#issuecomment-461338326
https://github.com/sameersbn/docker-gitlab/pull/2088
https://curl.se/docs/manpage.html#--retry-connrefused
---
 gw_util.sh | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/gw_util.sh b/gw_util.sh
index 4e7dbd3c..e1a9207a 100755
--- a/gw_util.sh
+++ b/gw_util.sh
@@ -52,6 +52,9 @@ isRollupCellExits(){
     rollup_hash_type=$( parse_toml_with_section "$tomlconfigfile" "chain.rollup_type_script" "hash_type" )
     rollup_args=$( parse_toml_with_section "$tomlconfigfile" "chain.rollup_type_script" "args" )
 
+    # curl retry on connrefused, considering ECONNREFUSED as a transient error(network issues)
+    # connections with ipv6 are not retried because it returns EADDRNOTAVAIL instead of ECONNREFUSED,
+    # hence we should use --ipv4
     result=$( echo '{
     "id": 2,
     "jsonrpc": "2.0",
@@ -70,8 +73,9 @@ isRollupCellExits(){
     ]
     }' \
     | tr -d '\n' \
-    | curl -H 'content-type: application/json' -d @- \
-    http://localhost:8116 )
+    | curl --ipv4 --retry 3 --retry-connrefused \
+    -H 'content-type: application/json' -d @- \
+    http://localhost:8116)
 
     if [[ $result =~ "block_number" ]]; then
         echo "Rollup cell exits!"