Curl: Error: (3) Port number ended with '"'

Question

I am trying to get a token of a dot net core 2.0 web API.

This is what I am doing:

C:\Users\danyb>curl -X POST -H 'Content-Type:application/json'^
Mehr? -d '{\"username\":\"mario\",\"password\":\"secret\"}'^
Mehr? localhost:56183/api/token

[1/2]: '"username":"mario"'localhost:56183/api/token --> <stdout>
--_curl_--'"username":"mario"'localhost:56183/api/token
curl: (3) Port number ended with '"'

[2/2]: '"password":"secret"'localhost:56183/api/token --> <stdout>
--_curl_--'"password":"secret"'localhost:56183/api/token
curl: (3) Port number ended with '"'

I already searched the web but couldn't find a working solution.

TokenController Class:

using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.IdentityModel.Tokens;
using System;
using System.IdentityModel.Tokens.Jwt;
using System.Security.Claims;
using System.Text;

namespace JWT.Controllers
{
    [Route("api/[controller]")]
    public class TokenController : Controller
    {
        private IConfiguration _config;

        public TokenController(IConfiguration config)
        {
            _config = config;
        }

        [AllowAnonymous]
        [HttpPost]
        public IActionResult CreateToken([FromBody]LoginModel login)
        {
            IActionResult response = Unauthorized();
            var user = Authenticate(login);

            if (user != null)
            {
                var tokenString = BuildToken(user);
                response = Ok(new { token = tokenString });
            }

            return response;
        }

        private string BuildToken(UserModel user)
        {

            var claims = new[] {
                new Claim(JwtRegisteredClaimNames.Sub, user.Name),
                new Claim(JwtRegisteredClaimNames.Email, user.Email),
                new Claim(JwtRegisteredClaimNames.Birthdate, user.Birthdate.ToString("yyyy-MM-dd")),
                new Claim(JwtRegisteredClaimNames.Jti, Guid.NewGuid().ToString())
            };

            var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_config["Jwt:Key"]));
            var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);

            var token = new JwtSecurityToken(_config["Jwt:Issuer"],
              _config["Jwt:Issuer"],
              claims,
              expires: DateTime.Now.AddMinutes(30),
              signingCredentials: creds);

            return new JwtSecurityTokenHandler().WriteToken(token);
        }

        private UserModel Authenticate(LoginModel login)
        {
            UserModel user = null;

            if (login.Username == "mario" && login.Password == "secret")
            {
                user = new UserModel { Name = "Mario Rossi", Email = "[email protected]" };
            }
            return user;
        }

        public class LoginModel
        {
            public string Username { get; set; }
            public string Password { get; set; }
        }

        private class UserModel
        {
            public string Name { get; set; }
            public string Email { get; set; }
            public DateTime Birthdate { get; set; }
        }
    }
}

I think the error has nothing to do with the Controller but more with the Curl call as itself.

Answer 1

I ran into something similar and was tricked by some special character single and double quotes. So my advise here, ensure that you correctly formatted your curl request on the command line. No need to escape if you stick to double quotes within your single quotes.

Try this one:

curl -X POST -H 'Content-Type:application/json' http://localhost:56183/api/token -d '{"username":"mario", "password":"secret"}'