This is what i use and it should work i hope for your case.
My startup.cs ConfigureServices() decorated with:
services.AddCors(feature =>
feature.AddPolicy(
"CorsPolicy",
apiPolicy => apiPolicy
//.AllowAnyOrigin()
//.WithOrigins("http://localhost:4200")
.AllowAnyHeader()
.AllowAnyMethod()
.SetIsOriginAllowed(host => true)
.AllowCredentials()
));
And, Configure() method with:
app.UseCors("CorsPolicy");
Notice the SetIsOriginAllowed() and allowCreds() along with other policy settings, this works for me with POST calls to my api from my angular, which are running on two different port#s.
UPDATE:
Following the questions on the comments, adding additional information on how do we check the logged in user (windows auth) btwn api and the angular (frontend).
You can check the incoming User on a specific route that would only expect the authenticated user using the decoration [Authorize]. In my case, i would have only one method that would expect the windows user in the api:
[HttpGet("UserInfo")]
[Authorize]
public IActionResult GetUserInfo()
{
string defaultCxtUser = HttpContext?.User?.Identity?.Name;
if (defaultCxtUser != null && !string.IsNullOrEmpty(defaultCxtUser))
{
_logger.LogDebug($"START - Get Context user details for {defaultCxtUser}");
ADHelper.logger = _logger;
var userFullName = ADHelper.GetUserIdentityInfo(defaultCxtUser);
_logger.LogInformation($"Context user {defaultCxtUser} with name: {userFullName}");
var userInfo = new { Name = userFullName };
//_logger.LogDebug($"END - GetUserInfo({defaultCxtUser} for {userFullName}");
return Ok(userInfo);
}
else
return Ok(new { Name = defaultCxtUser });
}
then i would call this from my angular with the service call as,
// Get the Logged in user info
GetCurrentUserInfo(): Observable<string> {
const httpOptions = {
headers: new HttpHeaders({
'Content-Type': 'application/json'
}),
withCredentials: true
};
// return this.http.get<string>(`${ApiPath}UserInfo`, httpOptions)
// .pipe(map(v => v as string));
return this.http.get<UserInfo>(`${ApiPath}UserInfo`, httpOptions)
.pipe(map(data => {
// console.log(data, data.Name);
return data.Name;
}))
;
}
Please see the headers with 'withCredentials: true' line that would trigger to pass the current user info, and it would be read and understood only if it has the authorize attr to read the User.Identity object in c# side. The reason we do this on a specific method is that, there should be some other parental method in the api like ApiStatus() or anything that could be, should be called first. This would ensure to also invoke the preflight check with OPTIONS that would require anonymous auth. Like in my case, getting whether the api is available and running, and some other app environment info before i get the userInfo() from my angular app.
