close fds and added libev as an optional dep

naboris.opam

@@ -19,6 +19,9 @@ depends: [
   "reason" {>= "3.4.0"}
   "httpaf" {>= "0.6.0"}
   "httpaf-lwt-unix" {>= "0.6.0"}
-  "lwt" {>= "4.2.1"}
+  "lwt" {>= "5.1.1"}
   "uri" {>= "2.2.0"}
 ]
+depopts: [
+  "conf-libev"
+]

package.json

@@ -19,7 +19,8 @@
     "clean": "esy b dune clean",
     "clean-install": "rm -rf node_modules && rm -rf esy.lock && rm -rf _esy",
     "clean-world": "npm run clean && npm run clean-install",
-    "test-coco": "npm run clean && npm run gen-test-json && npm run test && npm run coco-report && npm run gen-prod-json"
+    "test-coco": "npm run clean && npm run gen-test-json && npm run test && npm run coco-report && npm run gen-prod-json",
+    "full-libev-test": "esy @libev-test install && LIBEV_TEST=true esy @libev-test b dune runtest"
   },
   "repository": {
     "type": "git",
@@ -36,7 +37,8 @@
     "@opam/reason": ">=3.4.0",
     "@opam/httpaf": ">=0.6.0",
     "@opam/httpaf-lwt-unix": ">=0.6.0",
-    "@opam/lwt": ">=4.2.1",
+    "@opam/conf-libev": ">=4",
+    "@opam/lwt": ">=5.1.1",
     "@opam/uri": ">=2.2.0"
   },
   "devDependencies": {

src/Res.re

@@ -63,6 +63,7 @@ let streamFileContentsToBody = (fullFilePath, responseBody) => {
     pipeBody(~count=bufferSize, channel, responseBody),
     () => {
       Httpaf.Body.close_writer(responseBody);
+      Unix.close(fd);
       Lwt.return_unit;
     },
   );