From 0a159bea15473254399e80c8e1536c0bb7f80fcf Mon Sep 17 00:00:00 2001
From: Yoshiya Hinosawa <stibium121@gmail.com>
Date: Wed, 20 Jan 2021 23:47:17 +0900
Subject: fix(ops/net): fix panic in op_dns_resolve (#9187)

---
 cli/tests/resolve_dns.ts     | 6 ++++++
 cli/tests/resolve_dns.ts.out | 1 +
 runtime/ops/net.rs           | 3 ++-
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/cli/tests/resolve_dns.ts b/cli/tests/resolve_dns.ts
index 35abfc803..7865d9680 100644
--- a/cli/tests/resolve_dns.ts
+++ b/cli/tests/resolve_dns.ts
@@ -34,3 +34,9 @@ console.log(JSON.stringify(srv));
 
 console.log("TXT");
 console.log(JSON.stringify(txt));
+
+try {
+  await Deno.resolveDns("not-found-example.com", "A", nameServer);
+} catch (e) {
+  console.log("Error thrown for not-found-example.com");
+}
diff --git a/cli/tests/resolve_dns.ts.out b/cli/tests/resolve_dns.ts.out
index 10bd78e8a..78381e6c6 100644
--- a/cli/tests/resolve_dns.ts.out
+++ b/cli/tests/resolve_dns.ts.out
@@ -14,3 +14,4 @@ SRV
 [{"priority":0,"weight":100,"port":1234,"target":"srv.com."}]
 TXT
 [["foo","bar"]]
+Error thrown for not-found-example.com
diff --git a/runtime/ops/net.rs b/runtime/ops/net.rs
index aa97be00b..e3864b38a 100644
--- a/runtime/ops/net.rs
+++ b/runtime/ops/net.rs
@@ -629,7 +629,8 @@ async fn op_dns_resolve(
 
   let results: Vec<DnsReturnRecord> = resolver
     .lookup(query, record_type, Default::default())
-    .await?
+    .await
+    .map_err(|e| generic_error(format!("{}", e)))?
     .iter()
     .filter_map(rdata_to_return_record(record_type))
     .collect();
-- 
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