109 words (approximately 1 min)

System.Net

Types for working with network resources.

Common Types

  • DNS, IP Addresses, and Web Requests: Dns, Uri, Cookie, WebClient, IPAddress
  • FTP: FtpStatusCode, FtpWebRequest, FtpWebResponse

Uri

string url = "https://stackoverflow.com/search?q=securestring";
Uri uri = new(url);

Fields

  • .Scheme — https
  • .Port — 443
  • .Host — stackoverflow.com
  • .Path — /search
  • .Query — ?q=securestring

IPHostEntry

IPHostEntry entry = Dns.GetHostEntry(uri.Host);

foreach (IPAddress address in entry.AddressList) 
{
    // address returns 151.101.193.69
    // address.AddressFamily returns InterNetwork
}

System.Net.NetworkInformation

Types for working with low-level network protocols.

Common Types: IPStatus, NetworkChange, Ping, TcpStatistics

Pinging

Ping ping = new();
PingReply reply = ping.Send(uri.Host);

reply.Status // ICMP success/failure?
reply.Address // The IP address that replied.
reply.RoundtripTime // Response time in milliseconds.