fixed Method 'GET' already declared for route Error (#62)

* add test and make condition before set handler

* simplify the logic

Co-authored-by: Momen <[email protected]>

index.js

@@ -13,7 +13,9 @@ function fastifyWebsocket (fastify, opts, next) {
   }
   const handle = opts.handle
     ? (req, res) => opts.handle(req[kWs], req)
-    : (req, res) => { req[kWs].socket.close() }
+    : (req, res) => {
+      req[kWs].socket.close()
+    }
 
   const options = Object.assign({ server: fastify.server }, opts.options)
 
@@ -33,6 +35,9 @@ function fastifyWebsocket (fastify, opts, next) {
         throw new Error('websocket handler can only be declared in GET method')
       }
 
+      if (routeOptions.path === routeOptions.prefix) {
+        return
+      }
       let wsHandler = routeOptions.wsHandler
       let handler = routeOptions.handler
 
@@ -51,7 +56,7 @@ function fastifyWebsocket (fastify, opts, next) {
         const result = wsHandler(req[kWs], req, params)
 
         if (result && typeof result.catch === 'function') {
-          result.catch((err) => req[kWs].destroy(err))
+          result.catch(err => req[kWs].destroy(err))
         }
       })
 

test/router.js

@@ -336,3 +336,38 @@ test('Should pass route params to handlers', t => {
     })
   })
 })
+
+test('Should not thow error when register empgy get with prefix', t => {
+  const fastify = Fastify()
+
+  t.tearDown(() => fastify.close())
+
+  fastify.register(fastifyWebsocket)
+
+  fastify.register(
+    function (instance, opts, next) {
+      instance.get('/', { websocket: true }, (connection, req) => {
+        connection.socket.on('message', message => {
+          t.equal(message, 'hi from client')
+          connection.socket.send('hi from server')
+        })
+      })
+      next()
+    },
+    { prefix: '/baz' }
+  )
+
+  fastify.listen(0, err => {
+    if (err) t.error(err)
+
+    const ws = new WebSocket(
+      'ws://localhost:' + fastify.server.address().port + '/baz/'
+    )
+
+    ws.on('open', () => {
+      t.pass('Done')
+      ws.close()
+      t.end()
+    })
+  })
+})