nswag generated service has no return logic - web-services

Question

I have a asp.net WebAPI service for user login that takes an email and password. The api method has the following signature. LoginDto has two fileds, Email and password.
public async Task<IActionResult> Login(LoginDto dto)
Once the user is authenticated, WebAPI returns an object that has token and Id:
return Ok(new { Token = GenerateJwtTokenFromClaims(claims), Id=user.Id });
On the client side (Blazor app), I used nswag command line tool by running nswag run and it "successfully" generated the Service and Contract files. Everything complies. nswag generated code is pasted below.
When I want to use the login nswag Service, I have the following method (I also have an overloaded method with CancellationToken but I only use this method):
public System.Threading.Tasks.Task Login2Async(LoginDto body)
{
return Login2Async(body, System.Threading.CancellationToken.None);
}
The question that I have is that how do I get the response out of the nswag-generated-code that the WebAPI login sent back to the client? When I try to assign a var to the method, I get Cannot assign void to an implicitly-typed variable which makes sense since I don't see a return type. I also don't see any logic in the nswag generated service file to return the response to the caller. How do I get the response back from the nswag generated API call? Is there an option I have to set in nswag run to get a response object back? Thanks in advance.
public async System.Threading.Tasks.Task Login2Async(LoginDto body, System.Threading.CancellationToken cancellationToken)
{
var urlBuilder_ = new System.Text.StringBuilder();
urlBuilder_.Append(BaseUrl != null ? BaseUrl.TrimEnd('/') : "").Append("/api/Account/Login");
var client_ = _httpClient;
var disposeClient_ = false;
try
{
using (var request_ = new System.Net.Http.HttpRequestMessage())
{
var content_ = new System.Net.Http.StringContent(Newtonsoft.Json.JsonConvert.SerializeObject(body, _settings.Value));
content_.Headers.ContentType = System.Net.Http.Headers.MediaTypeHeaderValue.Parse("application/json");
request_.Content = content_;
request_.Method = new System.Net.Http.HttpMethod("POST");
PrepareRequest(client_, request_, urlBuilder_);
var url_ = urlBuilder_.ToString();
request_.RequestUri = new System.Uri(url_, System.UriKind.RelativeOrAbsolute);
PrepareRequest(client_, request_, url_);
var response_ = await client_.SendAsync(request_, System.Net.Http.HttpCompletionOption.ResponseHeadersRead, cancellationToken).ConfigureAwait(false);
var disposeResponse_ = true;
try
{
var headers_ = System.Linq.Enumerable.ToDictionary(response_.Headers, h_ => h_.Key, h_ => h_.Value);
if (response_.Content != null && response_.Content.Headers != null)
{
foreach (var item_ in response_.Content.Headers)
headers_[item_.Key] = item_.Value;
}
ProcessResponse(client_, response_);
var status_ = (int)response_.StatusCode;
if (status_ == 200)
{
return;
}
else
if (status_ == 400)
{
var objectResponse_ = await ReadObjectResponseAsync<ProblemDetails>(response_, headers_).ConfigureAwait(false);
throw new ApiException<ProblemDetails>("Bad Request", status_, objectResponse_.Text, headers_, objectResponse_.Object, null);
}
else
{
var responseData_ = response_.Content == null ? null : await response_.Content.ReadAsStringAsync().ConfigureAwait(false);
throw new ApiException("The HTTP status code of the response was not expected (" + status_ + ").", status_, responseData_, headers_, null);
}
}
finally
{
if (disposeResponse_)
response_.Dispose();
}
}
}
finally
{
if (disposeClient_)
client_.Dispose();
}
}

Answer 1

Big thanks to the NSwag team, the issue is resolved. I was returning anonymous object from the WebAPI method. The correct way to do is the following. Notice that IActionResult was changed to ActionResult passing a concrete object to return to the caller.
public async Task<ActionResult<LoginDtoResponse>> Login(LoginDto dto)
then returning
return Ok(new LoginDtoResponse { Token = GenerateJwtTokenFromClaims(claims), Id=user.Id });
After that I did that, the following code was generated:
if (status_ == 200)
{
var objectResponse_ = await ReadObjectResponseAsync<LoginDtoResponse>(response_, headers_).ConfigureAwait(false);
return objectResponse_.Object;
}