Package: serviceping
servicepingA utility with a "ping" like interface to ping tcp port services.Table of ContentsBackgroundInstallUsageExamplesLicenseBackgroundThis utility was written to simplify troubleshooting network issues related to talking to network servicesUsageServiceping provides a command line interface that operates like thepingcommand
but instead of using icmp packets to check for a response from a host.  It can perform a
tcp network connection to a port on a host or a http or https get request to check a url
on a host.Since tcp and http requests require multiple operations.  Each request performs all of
the operations end to end for the request.  The serviceping command adds a-dflag that will show timings for the different stages the ping request.usage: serviceping [-h] [-c COUNT] [-i INTERVAL] [-W TIMEOUT] [-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
  -W TIMEOUT   Time to wait for a response, in seconds. The option affects only timeout in absence of any responsesExamplesThe serviceping tool uses a syntax that mirrors that of the ping commmand.Ping port 80 (http) onwww.yahoo.comBy pingingwww.yahoo.comvia http (port 80), we can clearly see the
multiple hosts responding and the latency of each request.$servicepingwww.yahoo.comSERVICEPING www.yahoo.com:80 (98.139.180.149:80).from www.yahoo.com:80 (98.139.183.24:80): time=2.46 msfrom www.yahoo.com:80 (98.139.180.149:80): time=2.43 ms--- www.yahoo.com ping statistics ---2 packets transmitted, 2 received, 0% packet loss, time 1704.0msrtt min/avg/max/dev = 2.43/2.44/2.46/4.00 ms$Ping port 4443 (https) onwww.yahoo.comServiceping can also connect to other ports such as the ssl port (443).$servicepingwww.yahoo.com:443SERVICEPING www.yahoo.com:443 (98.139.183.24:443).from www.yahoo.com:443 (98.139.180.149:443): time=2.89 msfrom www.yahoo.com:443 (98.139.180.149:443): time=2.81 ms--- www.yahoo.com ping statistics ---2 packets transmitted, 2 received, 0% packet loss, time 1744.0msrtt min/avg/max/dev = 2.81/2.85/2.89/6.08 ms$Pinging a URL instead of the portThe 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 ofhttp://cnn.com/$servicepinghttp://cnn.com/SERVICEPING cnn.com:80 (157.166.255.18:80).1500 bytes from cnn.com:80 (157.166.255.19:80):response=200 time=87.14 ms1448 bytes from cnn.com:80 (157.166.226.25:80):response=200 time=64.82 ms1500 bytes from cnn.com:80 (157.166.255.19:80):response=200 time=62.98 ms1500 bytes from cnn.com:80 (157.166.255.19:80):response=200 time=78.30 ms--- cnn.com ping statistics ---4 packets transmitted, 4 received, 0% packet loss, time 4372.0msrtt min/avg/max/dev = 62.98/73.31/87.14/56.00 ms$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 timingsThe 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.$serviceping-dhttp://cnn.com/SERVICEPING cnn.com:80 (157.166.255.19:80).1386 bytes from cnn.com:80 (157.166.255.19:80):response=200 dns=0.21ms connect=68.36ms request=130.02ms all=198.73ms1386 bytes from cnn.com:80 (157.166.226.25:80):response=200 dns=0.30ms connect=66.72ms request=101.07ms all=168.20ms1500 bytes from cnn.com:80 (157.166.255.18:80):response=200 dns=0.30ms connect=123.94ms request=203.08ms all=327.43ms1386 bytes from cnn.com:80 (157.166.226.26:80):response=200 dns=0.28ms connect=68.32ms request=87.94ms all=156.69ms--- cnn.com ping statistics ---4 packets transmitted, 4 received, 0% packet loss, time 5009.0msrtt min/avg/max/dev = 156.69/212.76/327.43/138.24 ms$Clearly, the host with address 157.166.255.18 is taking significantly longer
to establish the tcp connection and handle the http request.Pinging a SSL URL with timingsWhen pinging a ssl URL serviceping adds the ssl version information in the response.$serviceping-dhttps://www.cnn.com/SERVICEPING www.cnn.com:443 (151.101.25.67:443).1371 bytes from www.cnn.com:443 (151.101.25.67:443):ssl=TLSv1.2:response=200 dns=0.58ms connect=10.22ms ssl=97.84ms request=12.07ms all=121.17ms1371 bytes from www.cnn.com:443 (151.101.25.67:443):ssl=TLSv1.2:response=200 dns=0.59ms connect=11.87ms ssl=95.93ms request=10.98ms all=119.76ms1371 bytes from www.cnn.com:443 (151.101.25.67:443):ssl=TLSv1.2:response=200 dns=0.56ms connect=11.14ms ssl=95.81ms request=12.49ms all=120.42ms1371 bytes from www.cnn.com:443 (151.101.25.67:443):ssl=TLSv1.2:response=200 dns=0.60ms connect=10.76ms ssl=179.81ms request=10.72ms all=202.28ms--- www.cnn.com ping statistics ---4 packets transmitted, 4 received, 0.0% packet loss, time 3910.0370000000003msrtt min/avg/max/dev = 119.76/140.91/202.28/101.14 ms$LicenseThis project is licensed under the terms of theApache 2.0open source license. Please refer toLICENSEfor the full terms.