Network API Reference

This section provides detailed documentation for the networking libraries available in the Microsoft Development Kit. Use the examples and tables below to integrate network functionality into your applications.

Contents
  1. HttpClient
  2. WebSocket
  3. DnsResolver
  4. Sample Code

HttpClient Class

The HttpClient class provides a flexible, high‑level API for sending HTTP requests and receiving HTTP responses from a resource identified by a URI.

Properties

NameTypeDescription
BaseAddressUriBase address of the HTTP client.
TimeoutTimeSpanTimespan to wait before the request times out.
DefaultRequestHeadersHttpHeadersHeaders sent with each request.

Methods

public Task<HttpResponseMessage> GetAsync(string requestUri);
public Task<HttpResponseMessage> PostAsync(string requestUri, HttpContent content);
public void CancelPendingRequests();

WebSocket Client

Provides a real‑time, full‑duplex communication channel over a single TCP connection.

Usage

using System.Net.WebSockets;
using System.Threading;
using System.Threading.Tasks;

var client = new ClientWebSocket();
await client.ConnectAsync(new Uri("wss://example.com/socket"), CancellationToken.None);
await client.SendAsync(new ArraySegment<byte>(Encoding.UTF8.GetBytes("Hello")), WebSocketMessageType.Text, true, CancellationToken.None);
var buffer = new byte[1024];
var result = await client.ReceiveAsync(new ArraySegment<byte>(buffer), CancellationToken.None);
Console.WriteLine(Encoding.UTF8.GetString(buffer, 0, result.Count));
await client.CloseAsync(WebSocketCloseStatus.NormalClosure, "Done", CancellationToken.None);

DnsResolver

Static helper class for DNS lookups.

var addresses = await Dns.GetHostAddressesAsync("example.com");
foreach (var ip in addresses)
{
    Console.WriteLine(ip);
}

Complete Sample

Download the network-sample.zip archive containing a Visual Studio solution that demonstrates HTTP, WebSocket, and DNS usage.