8.26.1 When an opening handshake request is received

The following figure shows the trace collection points in WebSocket.

Figure 8‒100: Trace collection points of WebSocket (when an opening handshake request is received)

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

Table 8‒135: Details of the trace collection points of WebSocket (when an opening handshake request is received)
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
0xE100	1	A	Immediately before the start of processing after receiving the opening handshake request	CONNECT	URI at the time of handshake	--
0xE120	2	A	Immediately before invoking a method annotated with `@OnOpen` or the `onOpen` method of the `javax.websocket.Endpoint` implementation class	Class name of the endpoint	Method name	--
0xE121	3	A	Immediately after the processing of the method annotated with `@OnOpen` or the processing of the `onOpen` 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
0xE101	4	A	Immediately after the completion of processing after receiving the opening handshake request	CONNECT	URI at the time of handshake	In a normal state: Session ID In an abnormal state: Exception name

Legend:

A: Standard

--: Not applicable

#

Corresponds to the numbers in Figure 8-100.