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Merged
JamesNK merged 2 commits into from
Sep 13, 2022
Merged

Change examples to use WebApplication V4 #1879

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Change examples to use WebApplication V4
JamesNK Sep 9, 2022
3833830
Update
JamesNK Sep 13, 2022
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171 changes: 83 additions & 88 deletions examples/Ticketer/Client/Program.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -16,113 +16,108 @@

#endregion

using System;
using System.Net.Http;
using System.Threading.Tasks;
using System.Web;
using Google.Protobuf.WellKnownTypes;
using Grpc.Core;
using Grpc.Net.Client;
using Ticket;

namespace Client
{
public class Program
{
private const string Address = "https://localhost:5001";
using var channel = GrpcChannel.ForAddress(Address);
var client = new Ticketer.TicketerClient(channel);

static async Task Main(string[] args)
{
using var channel = GrpcChannel.ForAddress(Address);
var client = new Ticketer.TicketerClient(channel);
Console.WriteLine("gRPC Ticketer");
Console.WriteLine();
Console.WriteLine("Press a key:");
Console.WriteLine("1: Get available tickets");
Console.WriteLine("2: Purchase ticket");
Console.WriteLine("3: Authenticate");
Console.WriteLine("4: Exit");
Console.WriteLine();

Console.WriteLine("gRPC Ticketer");
Console.WriteLine();
Console.WriteLine("Press a key:");
Console.WriteLine("1: Get available tickets");
Console.WriteLine("2: Purchase ticket");
Console.WriteLine("3: Authenticate");
Console.WriteLine("4: Exit");
Console.WriteLine();
string? token = null;

string? token = null;
var exiting = false;
while (!exiting)
{
var consoleKeyInfo = Console.ReadKey(intercept: true);
switch (consoleKeyInfo.KeyChar)
{
case '1':
await GetAvailableTickets(client);
break;
case '2':
await PurchaseTicket(client, token);
break;
case '3':
token = await Authenticate();
break;
case '4':
exiting = true;
break;
}
}

var exiting = false;
while (!exiting)
{
var consoleKeyInfo = Console.ReadKey(intercept: true);
switch (consoleKeyInfo.KeyChar)
{
case '1':
await GetAvailableTickets(client);
break;
case '2':
await PurchaseTicket(client, token);
break;
case '3':
token = await Authenticate();
break;
case '4':
exiting = true;
break;
}
}
Console.WriteLine("Exiting");

Console.WriteLine("Exiting");
}
static async Task<string> Authenticate()
{
Console.WriteLine($"Authenticating as {Environment.UserName}...");
using var httpClient = new HttpClient();
using var request = new HttpRequestMessage
{
RequestUri = new Uri($"{Address}/generateJwtToken?name={HttpUtility.UrlEncode(Environment.UserName)}"),
Method = HttpMethod.Get,
Version = new Version(2, 0)
};
using var tokenResponse = await httpClient.SendAsync(request);
tokenResponse.EnsureSuccessStatusCode();

private static async Task<string> Authenticate()
{
Console.WriteLine($"Authenticating as {Environment.UserName}...");
using var httpClient = new HttpClient();
using var request = new HttpRequestMessage
{
RequestUri = new Uri($"{Address}/generateJwtToken?name={HttpUtility.UrlEncode(Environment.UserName)}"),
Method = HttpMethod.Get,
Version = new Version(2, 0)
};
using var tokenResponse = await httpClient.SendAsync(request);
tokenResponse.EnsureSuccessStatusCode();
var token = await tokenResponse.Content.ReadAsStringAsync();
Console.WriteLine("Successfully authenticated.");

var token = await tokenResponse.Content.ReadAsStringAsync();
Console.WriteLine("Successfully authenticated.");
return token;
}

return token;
static async Task PurchaseTicket(Ticketer.TicketerClient client, string? token)
{
Console.WriteLine("Purchasing ticket...");
try
{
Metadata? headers = null;
if (token != null)
{
headers = new Metadata();
headers.Add("Authorization", $"Bearer {token}");
}

private static async Task PurchaseTicket(Ticketer.TicketerClient client, string? token)
var response = await client.BuyTicketsAsync(new BuyTicketsRequest { Count = 1 }, headers);
if (response.Success)
{
Console.WriteLine("Purchasing ticket...");
try
{
Metadata? headers = null;
if (token != null)
{
headers = new Metadata();
headers.Add("Authorization", $"Bearer {token}");
}

var response = await client.BuyTicketsAsync(new BuyTicketsRequest { Count = 1 }, headers);
if (response.Success)
{
Console.WriteLine("Purchase successful.");
}
else
{
Console.WriteLine("Purchase failed. No tickets available.");
}
}
catch (Exception ex)
{
Console.WriteLine("Error purchasing ticket." + Environment.NewLine + ex.ToString());
}
Console.WriteLine("Purchase successful.");
}

private static async Task GetAvailableTickets(Ticketer.TicketerClient client)
else
{
Console.WriteLine("Getting available ticket count...");
var response = await client.GetAvailableTicketsAsync(new Empty());
Console.WriteLine("Available ticket count: " + response.Count);
Console.WriteLine("Purchase failed. No tickets available.");
}
}
catch (RpcException ex)
{
Console.WriteLine($"Error purchasing ticket: {ex.Status.StatusCode}");
}
catch (Exception ex)
{
Console.WriteLine($"Error purchasing ticket.{Environment.NewLine}{ex.ToString()}");
}
}

static async Task GetAvailableTickets(Ticketer.TicketerClient client)
{
Console.WriteLine("Getting available ticket count...");
var response = await client.GetAvailableTicketsAsync(new Empty());
Console.WriteLine("Available ticket count: " + response.Count);
}

public partial class Program
{
private const string Address = "https://localhost:5001";
}
71 changes: 56 additions & 15 deletions examples/Ticketer/Server/Program.cs
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Expand Up @@ -16,23 +16,64 @@

#endregion

using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Hosting;
using System.IdentityModel.Tokens.Jwt;
using System.Security.Claims;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.IdentityModel.Tokens;
using Server;

namespace Server
var builder = WebApplication.CreateBuilder(args);
builder.Services.AddGrpc();
builder.Services.AddSingleton<TicketRepository>();

builder.Services.AddAuthorization(options =>
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@captainsafia captainsafia Sep 13, 2022

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Have you considered using the new AuthorizationBuilder model here. Should be something like this:

services.AddAuthorization().AddPolicy(
  JwtBearerDefaults.AuthenticationScheme,
  policy => {
    policy.AddAuthenticationSchemes(JwtBearerDefaults.AuthenticationScheme);
    policy.RequireClaim(ClaimTypes.Name);
  });

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@JamesNK JamesNK Sep 13, 2022

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This isn't available for me. Perhaps the .NET 7 version with it isn't out yet.

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@captainsafia captainsafia Sep 13, 2022

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Oh interesting...they should've been a part of the preview7 release...

In any case, not a huge deal...

{
options.AddPolicy(JwtBearerDefaults.AuthenticationScheme, policy =>
{
policy.AddAuthenticationSchemes(JwtBearerDefaults.AuthenticationScheme);
policy.RequireClaim(ClaimTypes.Name);
});
});
builder.Services.AddAuthentication()
.AddJwtBearer(options =>
{
options.TokenValidationParameters =
new TokenValidationParameters
{
ValidateAudience = false,
ValidateIssuer = false,
ValidateActor = false,
ValidateLifetime = true,
IssuerSigningKey = SecurityKey
};
});

var app = builder.Build();

app.MapGrpcService<TicketerService>();

app.MapGet("/generateJwtToken", context =>
{
public class Program
return context.Response.WriteAsync(GenerateJwtToken(context.Request.Query["name"]!));
});

app.Run();

static string GenerateJwtToken(string name)
{
if (string.IsNullOrEmpty(name))
{
public static void Main(string[] args)
{
CreateHostBuilder(args).Build().Run();
}

public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseStartup<Startup>();
});
throw new InvalidOperationException("Name is not specified.");
}

var claims = new[] { new Claim(ClaimTypes.Name, name) };
var credentials = new SigningCredentials(SecurityKey, SecurityAlgorithms.HmacSha256);
var token = new JwtSecurityToken("ExampleServer", "ExampleClients", claims, expires: DateTime.Now.AddSeconds(60), signingCredentials: credentials);
return JwtTokenHandler.WriteToken(token);
}

public partial class Program
{
private static readonly JwtSecurityTokenHandler JwtTokenHandler = new JwtSecurityTokenHandler();
private static readonly SymmetricSecurityKey SecurityKey = new SymmetricSecurityKey(Guid.NewGuid().ToByteArray());
}
101 changes: 0 additions & 101 deletions examples/Ticketer/Server/Startup.cs
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