Features

• Added the ability to use a custom WebSocket class on the server (#2007).

Bug fixes

• When following redirects, the Authorization and Cookie headers are no longer sent if the redirect host is different from the original host (#2013).

Bug fixes

• Fixed a data framing issue introduced in version 8.4.1 (#2004).

Notable changes

• To improve performance, strings sent via websocket.ping(), websocket.pong(), and websocket.send() are no longer converted to Buffers if the data does not need to be masked (#2000).

Features

• Added ability to generate custom masking keys (#1990).

Bug fixes

• Backported b8186dd1 to the 7.x release line (73dec34b).
• Backported ed2b8039 to the 7.x release line (22a26afb).

Features

• Added ability to pause and resume a WebSocket (0a8c7a9c).

Bug fixes

• Fixed a bug that could prevent the connection from being closed cleanly when using the stream API (ed2b8039).
• When following redirects, an error is now emitted and not thrown if the redirect URL is invalid (#1980).

Bug fixes

• When context takeover is enabled, messages are now compressed even if their size is below the value of the perMessageDeflate.threshold option (41ae5631).

Bug fixes

• Some closing operations are now run only if needed (ec9377ca).

Bug fixes

• Backported ec9377ca to the 7.x release line (0e274acd).

Bug fixes

• Backported 6a72da3e to the 7.x release line (76087fbf).
• Backported 869c9892 to the 7.x release line (27997933).