Program.cs

using System;
using System.Linq;
using System.Net;
using NetCoreServer;

namespace HttpClient
{
    class Program
    {
        static void Main(string[] args)
        {
            // HTTP server address
            string address = "localhost";
            if (args.Length > 0)
                address = args[0];

            // HTTP server port
            int port = 8080;
            if (args.Length > 1)
                port = int.Parse(args[1]);

            Console.WriteLine($"HTTP server address: {address}");
            Console.WriteLine($"HTTP server port: {port}");

            Console.WriteLine();

            // Create a new HTTP client
            var client = new HttpClientEx(Dns.GetHostAddresses(address).FirstOrDefault(), port);

            Console.WriteLine("Press Enter to stop the client or '!' to reconnect the client...");

            // Perform text input
            for (;;)
            {
                string line = Console.ReadLine();
                if (string.IsNullOrEmpty(line))
                    break;

                // Reconnect the client
                if (line == "!")
                {
                    Console.Write("Client reconnecting...");
                    if (client.IsConnected)
                        client.ReconnectAsync();
                    else
                        client.ConnectAsync();
                    Console.WriteLine("Done!");
                    continue;
                }

                var commands = line.Split(' ');
                if (commands.Length < 2)
                {
                    Console.WriteLine("HTTP method and URL must be entered!");
                    continue;
                }

                if (commands[0].ToUpper() == "HEAD")
                {
                    var response = client.SendHeadRequest(commands[1]).Result;
                    Console.WriteLine(response);
                }
                else if (commands[0].ToUpper() == "GET")
                {
                    var response = client.SendGetRequest(commands[1]).Result;
                    Console.WriteLine(response);
                }
                else if (commands[0].ToUpper() == "POST")
                {
                    if (commands.Length < 3)
                    {
                        Console.WriteLine("HTTP method, URL and body must be entered!");
                        continue;
                    }

                    var response = client.SendPostRequest(commands[1], commands[2]).Result;
                    Console.WriteLine(response);
                }
                else if (commands[0].ToUpper() == "PUT")
                {
                    if (commands.Length < 3)
                    {
                        Console.WriteLine("HTTP method, URL and body must be entered!");
                        continue;
                    }

                    var response = client.SendPutRequest(commands[1], commands[2]).Result;
                    Console.WriteLine(response);
                }
                else if (commands[0].ToUpper() == "DELETE")
                {
                    var response = client.SendDeleteRequest(commands[1]).Result;
                    Console.WriteLine(response);
                }
                else if (commands[0].ToUpper() == "OPTIONS")
                {
                    var response = client.SendOptionsRequest(commands[1]).Result;
                    Console.WriteLine(response);
                }
                else if (commands[0].ToUpper() == "TRACE")
                {
                    var response = client.SendTraceRequest(commands[1]).Result;
                    Console.WriteLine(response);
                }
                else
                    Console.WriteLine("Unknown HTTP method");
            }

            // Disconnect the client
            Console.Write("Client disconnecting...");
            client.Disconnect();
            Console.WriteLine("Done!");
        }
    }
}