cleanup and test

lib/manager.ts

@@ -473,17 +473,18 @@ export class Manager<
   /**
    * Called upon a socket close.
    *
-   * @param socket
+   * @param nsp - the namespace of the socket being closed
    * @private
    */
-  _destroy(closingSocket: Socket): void {
-    delete this.nsps[closingSocket.nsp];
+  _destroy(nsp: string): void {
+    delete this.nsps[nsp];
+
     const nsps = Object.keys(this.nsps);
 
     for (const nsp of nsps) {
-      const socket = this.nsps[nsp];
+      const remainingSocket = this.nsps[nsp];
 
-      if (socket.active) {
+      if (remainingSocket.active) {
         debug("socket %s is still active, skipping close", nsp);
         return;
       }

lib/socket.ts

@@ -881,7 +881,7 @@ export class Socket<
       this.subs.forEach((subDestroy) => subDestroy());
       this.subs = undefined;
     }
-    this.io["_destroy"](this);
+    this.io._destroy(this.nsp);
   }
 
   /**

test/connection.ts

@@ -60,6 +60,19 @@ describe("connection", () => {
     s2.disconnect();
   });
 
+  it("should start a single connection with different namespaces (after disconnection)", () => {
+    const s1 = io("/foo");
+    const s2 = io("/bar");
+
+    s2.disconnect();
+
+    const s3 = io("/bar");
+
+    expect(s3.io).to.be(s1.io);
+    s1.disconnect();
+    s3.disconnect();
+  });
+
   it("should work with acks", () => {
     return wrap((done) => {
       const socket = io(BASE_URL, { forceNew: true });