Last Modified: Aug 19, 2026
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
11.5.1, 11.5.1 hf1, 11.5.1 hf2, 11.5.1 hf3, 11.5.1 hf4, 11.5.1 hf5, 11.5.1 hf6, 11.5.1 hf7, 11.5.1 hf8, 11.5.1 hf9, 11.5.1 hf10, 11.5.1 hf11, 11.5.2, 11.5.2 hf1, 11.5.3, 11.5.3 hf1, 11.5.3 hf2, 11.5.4, 11.5.4 hf1, 11.5.4 hf2, 11.5.4 hf3, 11.5.4 hf4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10
Fixed In:
11.6.0
Opened: Nov 14, 2013 Severity: 3-Major Related Article:
K15357
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.
WebSockets and the HTTP CONNECT method now work with OneConnect.