chore: include Engine.IO v5

Release notes: https://github.com/socketio/engine.io/releases/tag/5.0.0

lib/index.ts

@@ -43,7 +43,7 @@ type ParentNspNameMatchFn = (
 interface EngineOptions {
   /**
    * how many ms without a pong packet to consider the connection closed
-   * @default 5000
+   * @default 20000
    */
   pingTimeout: number;
   /**
@@ -93,10 +93,12 @@ interface EngineOptions {
   httpCompression: boolean | object;
   /**
    * what WebSocket server implementation to use. Specified module must
-   * conform to the ws interface (see ws module api docs). Default value is ws.
-   * An alternative c++ addon is also available by installing uws module.
+   * conform to the ws interface (see ws module api docs).
+   * An alternative c++ addon is also available by installing eiows module.
+   *
+   * @default `require("ws").Server`
    */
-  wsEngine: string;
+  wsEngine: Function;
   /**
    * an optional packet which will be concatenated to the handshake packet emitted by Engine.IO.
    */

package.json

@@ -51,7 +51,7 @@
     "accepts": "~1.3.4",
     "base64id": "~2.0.0",
     "debug": "~4.3.1",
-    "engine.io": "~4.1.0",
+    "engine.io": "~5.0.0",
     "socket.io-adapter": "~2.2.0",
     "socket.io-parser": "~4.0.3"
   },

test/socket.io.ts

@@ -228,7 +228,7 @@ describe("socket.io", () => {
       });
       request
         .options("http://localhost:54013/socket.io/default/")
-        .query({ transport: "polling" })
+        .query({ transport: "polling", EIO: 4 })
         .set("Origin", "http://localhost:54023")
         .end((err, res) => {
           expect(res.status).to.be(204);
@@ -256,7 +256,7 @@ describe("socket.io", () => {
       });
       request
         .get("http://localhost:54014/socket.io/default/")
-        .query({ transport: "polling" })
+        .query({ transport: "polling", EIO: 4 })
         .set("Origin", "http://localhost:54024")
         .end((err, res) => {
           expect(res.status).to.be(200);
@@ -276,7 +276,7 @@ describe("socket.io", () => {
 
       request
         .get("http://localhost:54022/socket.io/default/")
-        .query({ transport: "polling" })
+        .query({ transport: "polling", EIO: 4 })
         .end((err, res) => {
           expect(res.status).to.be(200);
           done();
@@ -290,7 +290,7 @@ describe("socket.io", () => {
       request
         .get("http://localhost:54023/socket.io/default/")
         .set("origin", "http://foo.example")
-        .query({ transport: "polling" })
+        .query({ transport: "polling", EIO: 4 })
         .end((err, res) => {
           expect(res.status).to.be(403);
           done();