fix(ext/http): remove unwrap() when HTTP conn errors (#11674)

cli/tests/unit/http_test.ts

@@ -731,3 +731,23 @@ unitTest({ perms: { net: true } }, async function httpCookieConcatenation() {
   assertEquals(text, "ok");
   await promise;
 });
+
+// https://github.com/denoland/deno/issues/11651
+unitTest({ perms: { net: true } }, async function httpServerPanic() {
+  const listener = Deno.listen({ port: 4501 });
+  const client = await Deno.connect({ port: 4501 });
+  const conn = await listener.accept();
+  const httpConn = Deno.serveHttp(conn);
+
+  // This message is incomplete on purpose, we'll forcefully close client connection
+  // after it's flushed to cause connection to error out on the server side.
+  const encoder = new TextEncoder();
+  await client.write(encoder.encode("GET / HTTP/1.1"));
+
+  httpConn.nextRequest();
+  await client.write(encoder.encode("\r\n\r\n"));
+  httpConn.close();
+
+  client.close();
+  listener.close();
+});

ext/http/lib.rs

@@ -196,13 +196,12 @@ async fn op_http_request_next(
       Poll::Ready(Err(e)) => {
         // TODO(ry) close RequestResource associated with connection
         // TODO(ry) close ResponseBodyResource associated with connection
-        // close ConnResource
+        // try to close ConnResource, but don't unwrap as it might
-        state
+        // already be closed
+        let _ = state
           .borrow_mut()
           .resource_table
-          .take::<ConnResource>(conn_rid)
+          .take::<ConnResource>(conn_rid);
-          .unwrap();
-
         if should_ignore_error(&e) {
           true
         } else {