tcping is a tool that allows to verify reachability of TCP port. The purpose of this tool is to allow for a monitoring of reachability of specific service on remote (or local) host. Unlike standard ping, fping or hping, this tool uses simple TCP connection to verify if port is listening and is agnostic of application protocols etc.
Each check will simply open a connection and if successful it will immediately close it. While some applications may not like this, most will handle this will and will not cause any significant resource consumption.
Currently: to start using this you will need Go language compiler, which you can get from golang.org.
Compilation:
# go get -u -v -x github.com/akamensky/tcpingInstallation:
# mv ~/go/bin/tcping /usr/local/bin/tcpingSimple use case:
# tcping -s www.github.com -p 443
For more detailed usage information check included help message:
# tcping -h
Currently tcping does DNS resolution for every check. This allows
to test systems that are spread across multiple servers and see it
more from user perspective.
See included LICENSE file for license information.