The application completed without reading the entire request body, .net core 2.1.1

Question

I have created a user register controller to register users with repository design pattern. My controller looks like this.

[Route("api/[controller]")]
    public class AuthController : Controller
    {
        private readonly IAuthRepository _repo;
        public AuthController(IAuthRepository repo)
        {
            _repo = repo;
        }

        [AllowAnonymous]
        [HttpPost("register")]
        public async Task<IActionResult> Register([FromBody] UserForRegisterDto userForRegisterDto){
            // validate request
            if(!ModelState.IsValid)
            return BadRequest(ModelState);

            userForRegisterDto.Username = userForRegisterDto.Username.ToLower();

            if(await _repo.UserExists(userForRegisterDto.Username)) 
            return BadRequest("Username is already taken");

            var userToCreate = new User{
                Username = userForRegisterDto.Username
            };

            var createUser = await _repo.Register(userToCreate, userForRegisterDto.Password);

            return StatusCode(201);
        }
    }

When I send a request using Postman, it gives me the the 404 not found status code, and API reports the request completed without reading the entire body.

My request in Postman looks like this.

I have used Data Transfer Objects(DTO) to encapsulate data, I removed UserForRegisterDto and tried to use string username and string password, as follows but it did not work.

public async Task<IActionResult> Register([FromBody] string username, string password)

UserForRegisterDto looks like this.

 public class UserForRegisterDto
    {
        [Required]
        public string Username { get; set; }

        [Required]
        [StringLength(8, MinimumLength =4, ErrorMessage = "You must specify a password between 4 and 8 characters.")]
        public string Password { get; set; }
    }

I have tried many online solutions for this, but so far nothing resolved my problem. Please help me to troubleshoot the issue, Thank you in advance. I'm running this API on Ubuntu 18.04

Edit: Startup.cs

public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddDbContext<DataContext>(x => x.UseSqlite(Configuration.GetConnectionString("DefaultConnection")));
            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

            services.AddCors();
            services.AddScoped<IAuthRepository, AuthRepository>();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseHsts();
            }
            app.UseCors(x => x.AllowAnyHeader().AllowAnyMethod().AllowAnyOrigin().AllowCredentials());
            app.UseMvc();
        }
    }

Did you try putting a breakpoint on the method to see if it's even being hit when you invoke through postman? Can you also provide your startup.cs? — Mehdi Ibrahim, Sep 01 '18 at 17:00
Yes, I tried. it is not being hit. Startup.cs is added to the question. — Nishān Wickramarathna, Sep 01 '18 at 17:02
can you try removing services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1); and try again? — Mehdi Ibrahim, Sep 01 '18 at 17:06
Can you add a simple GET method that return a "Hello World" string to your controller and try invoking through a browser? — Mehdi Ibrahim, Sep 01 '18 at 17:40
I have had problems with `Cors` in the past. Sometimes it has been due to including `AllowCredentials` with `AllowAnyOrigin`. The docs say they cannot be used together so try removing `AllowCredentials` from the `UseCors` line. — Simply Ged, Sep 02 '18 at 00:57

score 27 · Answer 1 · answered Mar 20 '19 at 20:47

27

It happened to me in a new ASP.NET Core 2.1 service when debugging in localhost because I had in Startup.Configure:

app.UseHttpsRedirection();

I deactivated this setting when debugging locally:

if (env.IsDevelopment())
{
     app.UseDeveloperExceptionPage();
}
else
{
     app.UseHttpsRedirection();
}

answered Mar 20 '19 at 20:47

Vilmir

585
6
8

2

Solved it for me. Looks like Postman is not handling HTTPS redirects well? – Pieter Meiresone Mar 29 '19 at 16:36
1

Yep it might, or redirection when debugging locally has some issue in .Net Core 2.1 – Vilmir Mar 30 '19 at 16:23
Solved the problem for me! – Sarah Lissachell Jul 03 '20 at 13:15

score 26 · Accepted Answer · answered Sep 03 '18 at 03:28

The error info of the application completed without reading the entire request body often occurs when the client send a request that doesn't fulfill the sever requirements . In other words , it happens just before entering the action , resulting that you cannot debug it via a breakpoint within the body of action method .

For example , let's say a action method on the server :

[Route("api/[controller]")]
[ApiController]
public class DummyController : ControllerBase
{
    [HttpPost]
    public DummyDto PostTest([FromBody] DummyDto dto)
    {
        return dto;
    }
}

The DummyDto here is a dummy class to hold information:

public class DummyDto 
{
    public int Id { get; set; }
}

When clients send a request with payload not well formatted

For example , the following post request , which doesn't have a Content-Type: application/json header :

POST https://localhost:44306/api/test HTTP/1.1
Accept : application/json

{ "id":5 }

will result in a similar error info :

Microsoft.AspNetCore.Hosting.Internal.WebHost:Information: Request starting HTTP/1.1 POST http://localhost:44306/api/test  10
Microsoft.AspNetCore.Hosting.Internal.WebHost:Information: Request finished in 1.9319ms 404 
Microsoft.AspNetCore.Server.Kestrel:Information: Connection id "0HLGH8R93RPUO", Request id "0HLGH8R93RPUO:00000002": the application completed without reading the entire request body.

and the response from the server will be 404:

HTTP/1.1 404 Not Found
Server: Kestrel
X-SourceFiles: =?UTF-8?B?RDpccmVwb3J0XDIwMThcOVw5LTFcU08uQXV0aFJlYWRpbmdXaXRob3V0RW50aXRlQm9keVxBcHBcQXBwXGFwaVx0ZXN0?=
X-Powered-By: ASP.NET
Date: Mon, 03 Sep 2018 02:42:53 GMT
Content-Length: 0

As for the question you described , I suggest you should check the following list :

does the Postman send the request with a header of Content-Type: application/json ? make sure you have checked the header
If step1 doesn't work , click the code to show what it sends exactly when you send a request to the server .

Thank you @itminus. I had an issue with my directory structure of the project. Problem was my `AuthController` was not in the Controllers folder. I managed to find it because of your detailed answer. HatsOff! — Nishān Wickramarathna, Oct 19 '18 at 05:22

score 4 · Answer 3 · answered Jan 31 '19 at 08:55

4

There can be multiple reasons out of which one can be : – Caching in Visual Studio --

1.Close all the instances of visual studios, run Developer command prompt with Admin rights.
2.git clean -xfd [Your Repository to remove all dependencies and existing soln file]
3.take the latest build and run . [Make Endpoint AllowAnonymous]

answered Jan 31 '19 at 08:55

dinesh kandpal

641
7
12

Just closing and re-opening visual studio (on Mac) fixed it for me – P.Brian.Mackey May 29 '19 at 13:25

score 2 · Answer 4 · answered Jan 24 '19 at 22:57

I had the same error (even with "Content-Type: application/json") but adding "{id}" into the action verb worked for me i.e. changing from

    [HttpPatch]
    [ActionName("Index")]
    [Authorize(Policy = "Model")]
    public async Task<JsonResult> Update([FromRoute]int id, int modelId, [FromBody]Device device)

to

    [HttpPatch("{id}")]
    [ActionName("Index")]
    [Authorize(Policy = "Model")]
    public async Task<JsonResult> Update([FromRoute]int id, int modelId, [FromBody]Device device)

(asp.net core 2.1)

score 2 · Answer 5 · answered May 03 '19 at 22:20

I solved it like that. From

namespace AuthenticationService.Controllers
{
    [Route("api/authentication")]
    [ApiController]
    public class AuthenticationController : ControllerBase
    {
        [HttpPost("/token")]
        public IActionResult GenerateToken([FromBody] LoginRest loginRest)
        {

to [Route("api/authentication/")] with an addional /. The slash at[HttpPost("token")] I removed.

score 2 · Answer 6 · answered Jun 11 '19 at 15:26

Had the same issue running a Dotnet 2.2 and NGinx on remote Ubuntu 18.04-machine, got a:

.. . the application completed without reading the entire request body

on every API-call. What solved it for me was to install the SSL Certificates on the host through CERTBot from Let's encrypt, since Dotnet doesn't allow un-encrypted traffic.

Hopes this helps someone

score 2 · Answer 7 · answered Apr 02 '20 at 00:34

I spent hours on this. My problem was that I had:

[HttpPut("{matchGuidStr}/join")]
public async Task<IActionResult> JoinNewMatch (string matchGuidStr) {

instead of:

[HttpPut("{matchGuidStr}/join")]
public async Task<IActionResult> JoinNewMatch (string matchGuidStr, [FromBody] Payloads.JoinGamePayload payload) {

basically, my route didn't care about the request body at all (intentionally) but I needed to still pass it as a parameter. yikes!

score 1 · Answer 8 · answered Sep 01 '18 at 17:24

1

Could you try it by adding a request method [Route("jsonbody")]

 [AllowAnonymous]
 [HttpPost("register")]
 [Route("jsonbody")]
    public async Task<IActionResult> Register([FromBody] UserForRegisterDto userForRegisterDto){}

answered Sep 01 '18 at 17:24

Zeyit Başar

46
5

score 0 · Answer 9 · answered Jan 05 '19 at 21:03

i have same error, check maybe you put (AutoValidateAntiforgeryTokenAttribute) in AddMvc Services

services.AddMvc(opt => {

            //Prevent CSF Attake For POST,PUT,DELETE Verb
            //opt.Filters.Add(new AutoValidateAntiforgeryTokenAttribute());
        })

score -2 · Answer 10 · answered Mar 14 '19 at 20:59

-2

In my case, was the query wrong:

SELECT * FROM dbo.person WHERE login= 'value' && pass = 'value'

Solved after fix && wrong AND ok

SELECT * FROM dbo.person WHERE login= 'value' AND pass = 'value'

answered Mar 14 '19 at 20:59

Diego Venâncio

4,095
2
31
56

The application completed without reading the entire request body, .net core 2.1.1

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