Setting the--verbose flag outputs a highly verbose JSON stream containing debug information. It is intended to aid debugging and to provide a datasource for custom views.

Anymiddleware module can send information to the verbose stream with this line (wherekey is a identifying string e.g.middleware.example.config andvalue is the information to send).

this.emit('verbose',key,value)

You may hand-pick the keys to display in the verbose stream using--verbose.include and--verbose.exclude. Each option implies--verbose and accepts one or more regular expressions.

This command outputs only information regarding therewrite middleware.

$ ws --verbose.include rewrite

Include onlyrequest andresponse info.

ws --verbose.include request response

Print everything exceptsocket andmiddleware information.

$ ws --verbose.exclude socket middleware