Bug ID 437906: OneConnect is incompatible with WebSockets and the HTTP CONNECT method

Last Modified: Apr 10, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
11.0.0, 11.1.0, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5

Fixed In:
11.6.0, 11.5.1 HF6, 11.4.1 HF4

Opened: Nov 14, 2013
Severity: 3-Major
Related AskF5 Article:


WebSockets and the HTTP CONNECT method convert the connection through the HTTP filter into pass-through mode. However, if OneConnect is enabled, then the BIG-IP system disconnects from the server at the end of the tunnel handshake, thwarting this.


No tunnels can be made if OneConnect is enabled, breaking WebSockets.


This occurs when a OneConnect profile is attached to a HTTP virtual, and the client/server tries to open a tunnel via the CONNECT method, or via the WebSockets 101 Switching Protocols status code.


Disable OneConnect. This also can be done within an iRule by using ONECONNECT::reuse disable.

Fix Information

WebSockets and the HTTP CONNECT method now work with OneConnect.

Behavior Change