From a38889c285bef95359e36c93da37221126f96556 Mon Sep 17 00:00:00 2001
From: Giacomo Cavalieri <giacomo.cavalieri@icloud.com>
Date: Thu, 4 Jan 2024 19:13:14 +0100
Subject: =?UTF-8?q?=F0=9F=94=80=20Add=20logging=20to=20`lustre/try`=20(#30?=
 =?UTF-8?q?)?=
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* :heavy_plus_sign: Add `gleam_community_ansi` dependency

* :sparkles: Add log message when server is started

* :sparkles: Add retry policy and logging if port is taken
---
 src/http.ffi.mjs | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

(limited to 'src/http.ffi.mjs')

diff --git a/src/http.ffi.mjs b/src/http.ffi.mjs
index 06d5b31..3f59933 100644
--- a/src/http.ffi.mjs
+++ b/src/http.ffi.mjs
@@ -85,6 +85,17 @@ const server = Http.createServer((req, res) => {
   }
 });
 
-export const serve = (port) => {
-  server.listen(port, "localhost");
+export const serve = (host, port, on_start, on_port_taken) => {
+  let tries = 1;
+  server.on("error", (error) => {
+    if (error.code === "EADDRINUSE") {
+      let is_first_try = tries === 1;
+      if (is_first_try) {
+        on_port_taken(port);
+      }
+      tries++;
+      port++;
+      server.listen(port, host);
+    }
+  }).listen(port, host, () => { on_start(port) });
 };
-- 
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