Cisco Cisco Firepower Management Center 2000 Guia Do Programador

eStreamer clients use the Event Stream Request message to start a streaming session. The request 
message includes a start time and a bit flag field to specify the data the eStreamer service should include, 
which can be any combination of events, as well as intrusion event extra data and metadata. The Event 
Stream Request message can initiate both event stream requests and extended requests. The message 
type is 2.

You must submit an Event Stream Request message for all data requests, including a request exclusively 
for host profile information. In such a case, you first submit an Event Stream Request message, then a 
Host Request message (type 5) to specify the host data.

The following graphic illustrates the Event Stream Request message format. The message uses the 
standard header. The shaded fields are specific to the request message and are described in the following 
table.

C

This line displays the error code. In this example, the message contains a value of 

19

 (

10011

). 

Therefore, error number 19 is transmitted in the message.

D

This line contains the number of bytes in the error message (

1001

, or nine bytes), and the error 

message itself follows in the next nine bytes. The error message value, when converted to 
ASCII text, equals “No space,” which is the error message that accompanies error code 19.

Byte

0

1

2

3

Bit

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Header Version (1)

Message Type (2)

Message Length

Initial Timestamp

Request Flags