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Clean up namespaces after client is rejected in middleware #4773

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merged 3 commits into from
Jul 21, 2023
Merged

Clean up namespaces after client is rejected in middleware #4773

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4c521e7
Clean up namespaces after client is rejected in middleware
jminarik-atl Jul 19, 2023
4158a9f
Add connection clean up to tests
jminarik-atl Jul 20, 2023
066649b
Move some of the cleaup handlers back to original positions as per PR…
jminarik-atl Jul 20, 2023
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6 changes: 3 additions & 3 deletions lib/socket.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -758,9 +758,6 @@ export class Socket<
}

this._cleanup();
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_cleanup is called here and in two more places: https://github.com/socketio/socket.io/blob/main/lib/namespace.ts#L327-L333

I believe the this.nsp._remove(this); should be called in all these cases

this.nsp._remove(this);
this.client._remove(this);
this.connected = false;
this.emitReserved("disconnect", reason, description);
return;
}
Expand All @@ -772,6 +769,9 @@ export class Socket<
*/
_cleanup() {
this.leaveAll();
this.nsp._remove(this);
this.client._remove(this);
this.connected = false;
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I don't think this.client._remove(this); and this.connected = false; are needed here, since the socket is not actually connected if it's rejected by the middleware. What do you think?

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@carera carera Jul 20, 2023 •
edited

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I agree, I just thought it does no harm since client._remove has a guard check and no-ops if the socket is not actually connected, but yeah, let me move it out

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Done.

this.join = noop;
}

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6 changes: 3 additions & 3 deletions package-lock.json
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70 changes: 70 additions & 0 deletions test/namespaces.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -653,6 +653,76 @@ describe("namespaces", () => {
io.of(/^\/dynamic-\d+$/);
});

it("should NOT clean up namespace when cleanupEmptyChildNamespaces is OFF and client is rejected in middleware", (done) => {
const io = new Server(0, { cleanupEmptyChildNamespaces: false });
io.of(/^\/dynamic-\d+$/).use((socket, next) => {
next(new Error("You shall not pass!"));
});
const c1 = createClient(io, "/dynamic-101");

c1.on("connect", () => {
done(new Error("Should not connect"));
});

c1.on("connect_error", () => {
setTimeout(() => {
expect(io._nsps.has("/dynamic-101")).to.be(true);
expect(io._nsps.get("/dynamic-101")!.sockets.size).to.be(0);
success(done, io, c1);
}, 100);
});
});

it("should clean up namespace when cleanupEmptyChildNamespaces is ON and client is rejected in middleware", (done) => {
const io = new Server(0, { cleanupEmptyChildNamespaces: true });
io.of(/^\/dynamic-\d+$/).use((socket, next) => {
next(new Error("You shall not pass!"));
});
const c1 = createClient(io, "/dynamic-101");

c1.on("connect", () => {
done(new Error("Should not connect"));
});

c1.on("connect_error", () => {
setTimeout(() => {
expect(io._nsps.has("/dynamic-101")).to.be(false);
success(done, io, c1);
}, 100);
});
});

it("should NOT clean up namespace when cleanupEmptyChildNamespaces is ON and client is rejected in middleware but there are other clients connected", (done) => {
const io = new Server(0, { cleanupEmptyChildNamespaces: true });
let clientIdxToReject = 0;
io.of(/^\/dynamic-\d+$/).use((socket, next) => {
if (clientIdxToReject) {
next(new Error("You shall not pass!"));
} else {
next();
}
clientIdxToReject++;
});
const c1 = createClient(io, "/dynamic-101");

c1.on("connect", () => {
const c2 = createClient(io, "/dynamic-101");
c2.on("connect", () => {
done(new Error("Client 2 should not connect"));
});
c2.on("connect_error", () => {
setTimeout(() => {
expect(io._nsps.has("/dynamic-101")).to.be(true);
expect(io._nsps.get("/dynamic-101")!.sockets.size).to.be(1);
success(done, io, c1, c2);
}, 100);
});
});
c1.on("connect_error", () => {
done(new Error("Client 1 should not get an error"));
});
});

it("should attach a child namespace to its parent upon manual creation", () => {
const io = new Server(0);
const parentNamespace = io.of(/^\/dynamic-\d+$/);
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