many classes to help make network programming easier and more
accessible than many environments that preceded it. There is a great
deal of functionality to assist you in building
performing simple tasks like downloading files, sending and receiving
HTTP requests, and writing TCP/IP clients and servers. In areas where
Microsoft had not provided a direct managed way to access networking
functionality (like named pipes), there is always P/Invoke to allow
you to perform networking actions via the Win32 API, which
we’ll show you in this chapter. With all of the
functionality at your disposal in the
you’ll be writing web utilities in no time.
You have an IP address that you need to resolve into a hostname.
method to get the hostname for an IP address. In the following code,
an IP address is passed resolved, and the hostname is printed to the
using System; using System.Net; //... // use the Dnss class to resolve the address IPHostEntry iphost = Dns.Resolve("127.0.0.1"); // HostName property holds the hostname string hostName = iphost.HostName;
System.Net.Dns class is provided for simple
DNS resolution functionality. The
IPHostEntry that can be used to access
the hostname via the
See the “DNS Class” and “IPHostEntry Class” topics in the MSDN documentation. ...