How to list all of listening ports in Windows command prompt?

netstat -anb | findstr /R /C:"[LISTENING]"

How to solve problem "No connection could be made because the target machine actively refused it"

#1 reason is: target machine TCP not listening.
Can run following command line to check:
netstat -anb

What is difference between 0.0.0.0 and 127.0.0.1?

127.0.0.1 is localhost. Only same machine can access this address.
But 0.0.0.0 means all of ip addresses binding to this machine.

Reference:
http://blog.lauramamina.com/article?title=0.0.0.0%20vs%20127.0.0.1

Workflows of Refactoring

http://www.infoq.com/presentations/workflow-refactoring

Uri Templates

https://github.com/tavis-software/Tavis.UriTemplates

Usage:
        var url = new UriTemplate("http://example.org/{tenant}/customers")
            .AddParameter("tenant", "acmé")
            .Resolve();

        Assert.Equal("http://example.org/acm%C3%A9/customers", url);