serviceping
A utility with a "ping" like interface to ping tcp port services.
Table of Contents
Background
This utility was written to simplify troubleshooting network issues related to talking to network services
Install
To install serviceping, first make sure you are running Python 3.6+, then simply:
pip install serviceping
Usage
usage: serviceping [-h] [-c COUNT] [-i INTERVAL] [-d] destination [destination ...]
positional arguments:
destination Destination host or URL
optional arguments:
-h, --help show this help message and exit
-c COUNT Number of pings to send
-i INTERVAL Ping interval
-d Show timings for the entire connection
Examples
The serviceping tool uses a syntax that mirrors that of the ping commmand.
Ping port 80 (http) on www.yahoo.com
By pinging www.yahoo.com via http (port 80), we can clearly see the multiple hosts responding and the latency of each request.
$ serviceping www.yahoo.com
SERVICEPING www.yahoo.com:80 (98.139.180.149:80).
from www.yahoo.com:80 (98.139.183.24:80): time=2.46 ms
from www.yahoo.com:80 (98.139.180.149:80): time=2.43 ms
--- www.yahoo.com ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1704.0ms
rtt min/avg/max/dev = 2.43/2.44/2.46/4.00 ms
$
Ping port 4443 (https) on www.yahoo.com
Serviceping can also connect to other ports such as the ssl port (443).
$ serviceping www.yahoo.com:443
SERVICEPING www.yahoo.com:443 (98.139.183.24:443).
from www.yahoo.com:443 (98.139.180.149:443): time=2.89 ms
from www.yahoo.com:443 (98.139.180.149:443): time=2.81 ms
--- www.yahoo.com ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1744.0ms
rtt min/avg/max/dev = 2.81/2.85/2.89/6.08 ms
$
Pinging a URL instead of the port
The serviceping command can also specify send ping requests to a url. If a URL is specified, it will perform an http get request and show the response, which is useful when hosts are doing unexpected things in a dns rotation or behind a reverse proxy or vip.
In this example we specify a url of http://cnn.com/
$ serviceping http://cnn.com/
SERVICEPING cnn.com:80 (157.166.255.18:80).
1500 bytes from cnn.com:80 (157.166.255.19:80):response=200 time=87.14 ms
1448 bytes from cnn.com:80 (157.166.226.25:80):response=200 time=64.82 ms
1500 bytes from cnn.com:80 (157.166.255.19:80):response=200 time=62.98 ms
1500 bytes from cnn.com:80 (157.166.255.19:80):response=200 time=78.30 ms
--- cnn.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 4372.0ms
rtt min/avg/max/dev = 62.98/73.31/87.14/56.00 ms
$
The output shows that two hosts are responding to this request, and that they are returning different amounts of data in their responses.
Pinging a URL with timings
The detailed timing flag adds timings for each step of each request, which is useful for determining the causes of latency issues or errors.
Here we are doing the previous example with detailed timings.
$ serviceping -d http://cnn.com/
SERVICEPING cnn.com:80 (157.166.255.19:80).
1386 bytes from cnn.com:80 (157.166.255.19:80):response=200 dns=0.21ms connect=68.36ms request=130.02ms all=198.73ms
1386 bytes from cnn.com:80 (157.166.226.25:80):response=200 dns=0.30ms connect=66.72ms request=101.07ms all=168.20ms
1500 bytes from cnn.com:80 (157.166.255.18:80):response=200 dns=0.30ms connect=123.94ms request=203.08ms all=327.43ms
1386 bytes from cnn.com:80 (157.166.226.26:80):response=200 dns=0.28ms connect=68.32ms request=87.94ms all=156.69ms
--- cnn.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 5009.0ms
rtt min/avg/max/dev = 156.69/212.76/327.43/138.24 ms
$
Clearly, the host with address 157.166.226.25 is taking significantly longer to establish the tcp connection and handle the http request.
License
This project is licensed under the terms of the Apache 2.0 open source license. Please refer to LICENSE for the full terms.
2 maintainers
Metadata
2 maintainers
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