feat: added hook to close socket server on fastify close

index.js

@@ -4,4 +4,8 @@ const fp = require('fastify-plugin')
 
 module.exports = fp(async function (fastify, opts) {
   fastify.decorate('io', require('socket.io')(fastify.server, opts))
+  fastify.addHook('onClose', (fastify, done) => {
+    fastify.io.close()
+    done()
+  })
 }, { fastify: '3.x' })

test/index.test.js

@@ -38,3 +38,44 @@ test('should register the correct decorator passing options', async t => {
     })
   )
 })
+
+test('should close socket server on fastify close', async t => {
+  t.plan(1)
+
+  const { once } = require('events')
+
+  const PORT = 3030
+  const server = require('http').Server()
+  server.on('error', (e) => {
+    console.log(e)
+    if (e.code === 'EADDRINUSE') {
+      t.fail('Port was not free!')
+      setTimeout(() => {
+        server.close()
+        server.listen(PORT)
+      }, 1000)
+    }
+  })
+
+  const app = require('fastify')()
+
+  app.register(require('..'), {
+    path: '/test',
+    serveClient: false,
+    pingInterval: 10000,
+    pingTimeout: 5000,
+    cookie: false
+  })
+
+  await app.ready()
+  app.io.listen(PORT)
+
+  await app.close()
+
+  server.listen(PORT)
+
+  await once(server, 'listening')
+
+  server.close()
+  t.ok(true)
+})