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A client receiving an Object with more than 10 binary fields closes the connection

questionFurther information is requestedFurther information is requested

Status: Open.

#5504 In socketio/socket.io;

· guillaume-mueller opened on May 26, 2026

poder

enhancementNew feature or requestNew feature or request

invalidThis doesn't seem rightThis doesn't seem right

Status: Open.

#5503 In socketio/socket.io;

· pedroadrian3806-eng opened on May 26, 2026

Can't set response headers in Server.handleUpgrade

questionFurther information is requestedFurther information is requested

Status: Open.

#5497 In socketio/socket.io;

· weary-adventurer opened on May 11, 2026

WebTransport ignores query parameters in URL

questionFurther information is requestedFurther information is requested

Status: Open.

#5496 In socketio/socket.io;

· weary-adventurer opened on May 10, 2026

[Security] connectionStateRecovery skipMiddlewares bypasses auth on reconnect

questionFurther information is requestedFurther information is requested

Status: Open.

#5491 In socketio/socket.io;

· eddieran opened on Apr 10, 2026

Error in mTLS in node js using PKCS11 proxy and HSM

questionFurther information is requestedFurther information is requested

Status: Open.

#5480 In socketio/socket.io;

· rahul-vrutti opened on Mar 27, 2026

Heartbeat timeout is no longer reset on packet

needs investigation

Status: Open.

#5450 In socketio/socket.io;

· streunerlein opened on Jan 24, 2026

Incorrect acknowledgment callback signature when emitting before connection with ackTimeout option

questionFurther information is requestedFurther information is requested

Status: Open.

#5446 In socketio/socket.io;

· rbgmulmb opened on Jan 18, 2026

Korean Docs Request

enhancementNew feature or requestNew feature or request

Status: Open.

#5427 In socketio/socket.io;

· nayounsang opened on Dec 16, 2025

Send message to a Set<Room>

enhancementNew feature or requestNew feature or request

Status: Open.

#5418 In socketio/socket.io;

· floriannari opened on Nov 17, 2025

TypeScript type breakage under pnpm / preserveSymlinks=true due to extending Emitter from another package

needs investigation

Status: Open.

#5411 In socketio/socket.io;

· anthonyalayo opened on Nov 3, 2025

WebSocket disconnects after hours of uptime, then enters reconnect loop with "Invalid frame header"

needs investigation

Status: Open.

#5404 In socketio/socket.io;

· Yago-Tavares opened on Oct 23, 2025