Cisco Cisco Firepower Management Center 2000 开发者指南

The eStreamer service transmits metadata containing network protocol information for an event within 
a Network Protocol record, the format of which is shown below. (Network protocol information is sent 
when one of the metadata flags—bits 1, 14, 15, or 20 in the Request Flags field of a request message—is 
set. See 

.) Note that the Record Type field, which appears after the Message 

Length field, has a value of 

59

, indicating a Network Protocol record.

The following table describes the fields in the Network Protocol record.

The eStreamer service transmits metadata containing attribute information for an event within an 
Attribute record, the format of which is shown below. (Attribute information is sent when one of the 
metadata flags—bits 1, 14, 15, or 20 in the Request Flags field of a request message—is set. See 

.) Note that the Record Type field, which appears after the Message Length field, has a 

value of 

60

, indicating an Attribute record.

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 (4)

Message Length

Record Type (59)

Record Length

Network Protocol ID

Name Length

Name...

Network Protocol 
ID

uint32

The network protocol ID number.

Name Length

uint32

The number of bytes included in the network 
protocol name.

Name

string

The name of the network protocol.