Update for Fastify v5

.github/workflows/ci.yml

@@ -17,6 +17,6 @@ on:
 
 jobs:
   test:
-    uses: fastify/workflows/.github/workflows/plugins-ci.yml@v3
+    uses: fastify/workflows/.github/workflows/plugins-ci.yml@v4.1.0
     with:
       license-check: true

.taprc

@@ -1,5 +1,2 @@
-ts: false
-jsx: false
-flow: false
-coverage: true
-check-coverage: true
+files:
+  - test/**/*.js

index.js

@@ -13,7 +13,7 @@ const kWsHead = Symbol('wsHead')
 const kWsUpgradeListener = Symbol('wsUpgradeListener')
 
 function liftErrorCode (code) {
-  /* istanbul ignore next */
+  /* c8 ignore start */
   if (typeof code !== 'number') {
     // Sometimes "close" event emits with a non-numeric value
     return 1011
@@ -23,6 +23,7 @@ function liftErrorCode (code) {
   } else {
     return code
   }
+  /* c8 ignore stop */
 }
 
 function closeWebSocket (socket, code, reason) {
@@ -52,27 +53,27 @@ function proxyWebSockets (source, target) {
   }
 
   source.on('message', (data, binary) => waitConnection(target, () => target.send(data, { binary })))
-  /* istanbul ignore next */
+  /* c8 ignore start */
   source.on('ping', data => waitConnection(target, () => target.ping(data)))
-  /* istanbul ignore next */
   source.on('pong', data => waitConnection(target, () => target.pong(data)))
+  /* c8 ignore stop */
   source.on('close', close)
-  /* istanbul ignore next */
+  /* c8 ignore start */
   source.on('error', error => close(1011, error.message))
-  /* istanbul ignore next */
   source.on('unexpected-response', () => close(1011, 'unexpected response'))
+  /* c8 ignore stop */
 
   // source WebSocket is already connected because it is created by ws server
   target.on('message', (data, binary) => source.send(data, { binary }))
-  /* istanbul ignore next */
+  /* c8 ignore start */
   target.on('ping', data => source.ping(data))
-  /* istanbul ignore next */
+  /* c8 ignore stop */
   target.on('pong', data => source.pong(data))
   target.on('close', close)
-  /* istanbul ignore next */
+  /* c8 ignore start */
   target.on('error', error => close(1011, error.message))
-  /* istanbul ignore next */
   target.on('unexpected-response', () => close(1011, 'unexpected response'))
+  /* c8 ignore stop */
 }
 
 function handleUpgrade (fastify, rawRequest, socket, head) {
@@ -129,7 +130,6 @@ class WebSocketProxy {
       fastify.server.close = function (done) {
         wss.close(() => {
           oldClose.call(this, (err) => {
-            /* istanbul ignore next */
             done && done(err)
           })
         })
@@ -139,11 +139,11 @@ class WebSocketProxy {
       }
     }
 
-    /* istanbul ignore next */
+    /* c8 ignore start */
     wss.on('error', (err) => {
-      /* istanbul ignore next */
       this.logger.error(err)
     })
+    /* c8 ignore stop */
 
     this.wss = wss
     this.prefixList = []
@@ -167,7 +167,7 @@ class WebSocketProxy {
 
     const upstream = this.getUpstream(request, '')
     const target = new URL(dest, upstream)
-    /* istanbul ignore next */
+    /* c8 ignore next */
     target.protocol = upstream.indexOf('http:') === 0 ? 'ws:' : 'wss'
     target.search = search
     return target
@@ -314,10 +314,9 @@ async function fastifyHttpProxy (fastify, opts) {
       reply.hijack()
       try {
         wsProxy.handleUpgrade(request, dest || '/', noop)
-      } catch (err) {
-        /* istanbul ignore next */
+      } /* c8 ignore start */ catch (err) {
         request.log.warn({ err }, 'websocket proxy error')
-      }
+      } /* c8 ignore stop */
       return
     }
     reply.from(dest || '/', replyOpts)

package.json

@@ -28,34 +28,34 @@
   },
   "homepage": "https://github.com/fastify/fastify-http-proxy#readme",
   "devDependencies": {
-    "@fastify/pre-commit": "^2.0.2",
-    "@fastify/websocket": "^9.0.0",
-    "@types/node": "^20.1.0",
-    "@types/ws": "^8.2.2",
-    "@typescript-eslint/eslint-plugin": "^7.1.0",
-    "@typescript-eslint/parser": "^7.1.0",
-    "express": "^4.17.2",
+    "@fastify/pre-commit": "^2.1.0",
+    "@fastify/websocket": "^10.0.1",
+    "@types/node": "^20.12.7",
+    "@types/ws": "^8.5.10",
+    "@typescript-eslint/eslint-plugin": "^7.6.0",
+    "@typescript-eslint/parser": "^7.6.0",
+    "express": "^4.19.2",
     "express-http-proxy": "^2.0.0",
     "fast-proxy": "^2.1.0",
-    "fastify": "^4.0.0-rc.2",
-    "got": "^11.8.3",
+    "fastify": "^4.26.2",
+    "got": "^11.8.6",
     "http-errors": "^2.0.0",
     "http-proxy": "^1.18.1",
-    "simple-get": "^4.0.0",
+    "simple-get": "^4.0.1",
     "snazzy": "^9.0.0",
-    "socket.io": "^4.4.1",
-    "socket.io-client": "^4.4.1",
-    "standard": "^17.0.0",
-    "tap": "^16.0.0",
+    "socket.io": "^4.7.5",
+    "socket.io-client": "^4.7.5",
+    "standard": "^17.1.0",
+    "tap": "^18.7.2",
     "tsd": "^0.31.0",
-    "typescript": "^5.0.2",
+    "typescript": "^5.4.5",
     "why-is-node-running": "^2.2.2"
   },
   "dependencies": {
-    "@fastify/reply-from": "^9.0.0",
+    "@fastify/reply-from": "^9.7.0",
     "fast-querystring": "^1.1.2",
-    "fastify-plugin": "^4.5.0",
-    "ws": "^8.4.2"
+    "fastify-plugin": "^4.5.1",
+    "ws": "^8.16.0"
   },
   "tsd": {
     "directory": "test/types"

test/websocket-pathname.js

@@ -0,0 +1,75 @@
+const { test } = require('tap')
+const Fastify = require('fastify')
+const proxy = require('..')
+const WebSocket = require('ws')
+const { createServer } = require('node:http')
+const { promisify } = require('node:util')
+const { once } = require('node:events')
+
+// TODO: this test is flaky, probably because of promise resolution
+test('keep proxy websocket pathname', async (t) => {
+  t.plan(5)
+
+  const origin = createServer()
+  const wss = new WebSocket.Server({ server: origin })
+
+  t.teardown(wss.close.bind(wss))
+  t.teardown(origin.close.bind(origin))
+
+  const serverMessages = []
+  wss.on('connection', (ws, request) => {
+    ws.on('message', (message, binary) => {
+      // Also need save request.url for check from what url the message is coming.
+      serverMessages.push([message.toString(), binary, request.headers.host.split(':', 1)[0], request.url])
+      ws.send(message, { binary })
+    })
+  })
+
+  await promisify(origin.listen.bind(origin))({ port: 0, host: '127.0.0.1' })
+  // Host for wsUpstream and for later check.
+  const host = '127.0.0.1'
+  // Path for wsUpstream and for later check.
+  const path = '/keep/path'
+  const server = Fastify()
+  server.register(proxy, {
+    upstream: `ws://127.0.0.1:${origin.address().port}`,
+    // Start proxy with different upstream, without path
+    wsUpstream: `ws://${host}:${origin.address().port}`,
+    websocket: true
+  })
+
+  await server.listen({ port: 0, host: '127.0.0.1' })
+  t.teardown(server.close.bind(server))
+
+  // Start websocket with different upstream for connect, added path.
+  const ws = new WebSocket(`ws://${host}:${server.server.address().port}${path}`)
+  await once(ws, 'open')
+
+  const data = [{ message: 'hello', binary: false }, { message: 'fastify', binary: true, isBuffer: true }]
+  const dataLength = data.length
+  let dataIndex = 0
+
+  for (; dataIndex < dataLength; dataIndex++) {
+    const { message: msg, binary, isBuffer } = data[dataIndex]
+    const message = isBuffer
+      ? Buffer.from(msg)
+      : msg
+
+    ws.send(message, { binary })
+
+    const [reply, binaryAnswer] = await once(ws, 'message')
+
+    t.equal(reply.toString(), msg)
+    t.equal(binaryAnswer, binary)
+  }
+  // Also check "path", must be the same.
+  t.strictSame(serverMessages, [
+    ['hello', false, host, path],
+    ['fastify', true, host, path]
+  ])
+
+  await Promise.all([
+    once(ws, 'close'),
+    server.close()
+  ])
+})

test/websocket.js

@@ -574,70 +574,3 @@ test('multiple websocket upstreams with distinct server options', async (t) => {
     server.close()
   ])
 })
-
-test('keep proxy websocket pathname', async (t) => {
-  t.plan(5)
-
-  const origin = createServer()
-  const wss = new WebSocket.Server({ server: origin })
-
-  t.teardown(wss.close.bind(wss))
-  t.teardown(origin.close.bind(origin))
-
-  const serverMessages = []
-  wss.on('connection', (ws, request) => {
-    ws.on('message', (message, binary) => {
-      // Also need save request.url for check from what url the message is coming.
-      serverMessages.push([message.toString(), binary, request.headers.host.split(':', 1)[0], request.url])
-      ws.send(message, { binary })
-    })
-  })
-
-  await promisify(origin.listen.bind(origin))({ port: 0, host: '127.0.0.1' })
-  // Host for wsUpstream and for later check.
-  const host = '127.0.0.1'
-  // Path for wsUpstream and for later check.
-  const path = '/keep/path'
-  const server = Fastify()
-  server.register(proxy, {
-    upstream: `ws://127.0.0.1:${origin.address().port}`,
-    // Start proxy with different upstream, without path
-    wsUpstream: `ws://${host}:${origin.address().port}`,
-    websocket: true
-  })
-
-  await server.listen({ port: 0, host: '127.0.0.1' })
-  t.teardown(server.close.bind(server))
-
-  // Start websocket with different upstream for connect, added path.
-  const ws = new WebSocket(`ws://${host}:${server.server.address().port}${path}`)
-  await once(ws, 'open')
-
-  const data = [{ message: 'hello', binary: false }, { message: 'fastify', binary: true, isBuffer: true }]
-  const dataLength = data.length
-  let dataIndex = 0
-
-  for (; dataIndex < dataLength; dataIndex++) {
-    const { message: msg, binary, isBuffer } = data[dataIndex]
-    const message = isBuffer
-      ? Buffer.from(msg)
-      : msg
-
-    ws.send(message, { binary })
-
-    const [reply, binaryAnswer] = await once(ws, 'message')
-
-    t.equal(reply.toString(), msg)
-    t.equal(binaryAnswer, binary)
-  }
-  // Also check "path", must be the same.
-  t.strictSame(serverMessages, [
-    ['hello', false, host, path],
-    ['fastify', true, host, path]
-  ])
-
-  await Promise.all([
-    once(ws, 'close'),
-    server.close()
-  ])
-})

test/ws-prefix-rewrite-core.js

@@ -76,9 +76,12 @@ async function handleProxy (info, { backendPath, proxyOptions, wrapperOptions },
       handler: (req, reply) => {
         reply.send(req.url)
       },
-      wsHandler: (conn, req) => {
-        conn.write(req.url)
-        conn.end()
+      wsHandler: (socket, req) => {
+        socket.send(req.url)
+
+        socket.once('message', chunk => {
+          socket.close()
+        })
       }
     })
 

test/ws-prefix-rewrite.js

@@ -74,9 +74,12 @@ async function handleProxy (info, { backendPath, proxyOptions, wrapperOptions },
       handler: (req, reply) => {
         reply.send(req.url)
       },
-      wsHandler: (conn, req) => {
-        conn.write(req.url)
-        conn.end()
+      wsHandler: (socket, req) => {
+        socket.send(req.url)
+
+        socket.once('message', chunk => {
+          socket.close()
+        })
       }
     })