Analyzer tcpdump-upstream-no-keepalive


tcpdump-upstream-no-keepalive - capture the packets that have no HTTP upstream ‘keepalive’ configuration

Resource Category

Network I/O.

Application Type & Technical Stack

  • OpenResty
  • Nginx


The following parameters (or global variables) can be overridden by the user when running the analyzer or tool:


Type: int

Description: buffer size for capturing packets in MB.

Default Value: 50


Type: int

Description: max capture bytes of the packet

Default Value: 68


Type: int

Description: Sample time in seconds

Default Value: 10

Command Line Syntax

The analyzer can be invoked directly on the command-line via the orxray utility from the openresty-xray-cli software package.

Alternatively, the analyzer can also be invoked manually or automatically on the web console UI of OpenResty XRay (like on the Advanced web page).

# PID is the target process PID.
orxray analyzer run tcpdump-upstream-no-keepalive -p PID

# trace a shell command directly
orxray analyzer run tcpdump-upstream-no-keepalive -c SHELL_CMD

Tracing Multiple Processes

Not supported.

Output Formats

  • Plain Texts


The OpenResty Inc. Team.

Copyright (C) by OpenResty Inc. All rights reserved.