From 11f1243aa7972ad917a643ca1e5205e93f1767b8 Mon Sep 17 00:00:00 2001
From: Ernest Hysa <ernest@users.noreply.github.com>
Date: Sun, 31 May 2026 17:08:00 +0100
Subject: [PATCH] fix(engine.io-client): pass query params to createUri in
 WebTransport

Fixes #5496 - WebTransport query params ignored

The WebTransport transport was calling createUri() without passing the
query parameters, unlike other transports (websocket, polling) which
properly include query params via their uri() methods.
---
 packages/engine.io-client/lib/transports/webtransport.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/engine.io-client/lib/transports/webtransport.ts b/packages/engine.io-client/lib/transports/webtransport.ts
index ac03c7c5a8..fde909ac15 100644
--- a/packages/engine.io-client/lib/transports/webtransport.ts
+++ b/packages/engine.io-client/lib/transports/webtransport.ts
@@ -29,7 +29,7 @@ export class WT extends Transport {
     try {
       // @ts-ignore
       this._transport = new WebTransport(
-        this.createUri("https"),
+        this.createUri("https", this.query),
         this.opts.transportOptions[this.name],
       );
     } catch (err) {