telegraf/plugins/inputs/net_response/README.md

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# Network Response Input Plugin
The input plugin test UDP/TCP connections response time and can optional
verify text in the response.
### Configuration:
```toml
# Collect response time of a TCP or UDP connection
[[inputs.net_response]]
## Protocol, must be "tcp" or "udp"
## NOTE: because the "udp" protocol does not respond to requests, it requires
## a send/expect string pair (see below).
protocol = "tcp"
## Server address (default localhost)
address = "localhost:80"
## Set timeout
# timeout = "1s"
## Set read timeout (only used if expecting a response)
# read_timeout = "1s"
## The following options are required for UDP checks. For TCP, they are
## optional. The plugin will send the given string to the server and then
## expect to receive the given 'expect' string back.
## string sent to the server
# send = "ssh"
## expected string in answer
# expect = "ssh"
## Uncomment to remove deprecated fields; recommended for new deploys
# fielddrop = ["result_type", "string_found"]
```
### Metrics:
- net_response
- tags:
- server
- port
- protocol
- result
- fields:
- response_time (float, seconds)
- result_code (int, success = 0, timeout = 1, connection_failed = 2, read_failed = 3, string_mismatch = 4)
- result_type (string) **DEPRECATED in 1.7; use result tag**
- string_found (boolean) **DEPRECATED in 1.4; use result tag**
### Example Output:
```
net_response,port=8086,protocol=tcp,result=success,server=localhost response_time=0.000092948,result_code=0i,result_type="success" 1525820185000000000
net_response,port=8080,protocol=tcp,result=connection_failed,server=localhost result_code=2i,result_type="connection_failed" 1525820088000000000
net_response,port=8080,protocol=udp,result=read_failed,server=localhost result_code=3i,result_type="read_failed",string_found=false 1525820088000000000
```