8.26.7 When a closing handshake request is sent

The following figure shows the trace collection points in WebSocket.

Figure 8‒108: Trace collection points of WebSocket (when a closing handshake request is sent)

The following table describes the event IDs, trace levels, trace collection points, and information that can be collected.

Table 8‒141: Details of the trace collection points of WebSocket (when a closing handshake request is sent)
Event ID	No. in the figures^#	Level	Trace acquisition points	Information that you can acquire
Event ID	No. in the figures^#	Level	Trace acquisition points	Interface name	Operation name	Optional
0xE112	14	A	Immediately before the WebSocket frame transmission processing starts	WRITE	--	--
0xE113	15	A	Immediately after the WebSocket frame transmission processing is complete	WRITE	--	In a normal state: None In an abnormal state: Exception name
0xE146	21	A	Immediately before the start of processing after receiving or sending a closing handshake request	CLOSE	Cause of disconnection	--
0xE147	24	A	Immediately after the completion of processing after receiving or sending a closing handshake request	CLOSE	Cause of disconnection	In a normal state: None In an abnormal state: Exception name
0xE12A	22	A	Immediately before invoking a method annotated with `@OnClose` or the `onClose` method of the `javax.websocket.Endpoint` implementation class	Class name of the endpoint	Method name	--
0xE12B	23	A	Immediately after the processing of a method annotated with `@OnClose` or of the `onClose` method of the `javax.websocket.Endpoint` implementation class is complete	Class name of the endpoint	Method name	In a normal state: None In an abnormal state: Exception name
0xE136	25	A	Immediately after the `javax.websocket.Session.close` method is invoked	`javax.websocket.Session`	Method name (argument type)	Destination session ID
0xE137	26	A	Immediately before the return of the `javax.websocket.Session.close` method	`javax.websocket.Session`	Method name (argument type)	In a normal state: None In an abnormal state: Exception name

Legend:

A: Standard

--: Not applicable

#

Corresponds to the numbers in Figure 8-108.

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