public static async Task <HttpResponseMessage> PostAsJsonAntiForgeryAsync <TContent>(this HttpClient httpClient, string requestUri, TContent content)
{
// Get the form view
HttpResponseMessage responseMsg = await httpClient.GetAsync(requestUri);
if (!responseMsg.IsSuccessStatusCode)
{
return(responseMsg);
}
// Extract Anti Forgery Token
var antiForgeryToken = await responseMsg.ExtractAntiForgeryTokenAsync();
// Serialize data to Key/Value pairs
IDictionary <string, string> contentData = content.ToKeyValue();
// Create the request message with previously serialized data + the Anti Forgery Token
contentData.Add("__RequestVerificationToken", antiForgeryToken);
var requestMsg = new HttpRequestMessage(HttpMethod.Post, requestUri)
{
Content = new FormUrlEncodedContent(contentData)
};
// Copy the cookies from the response (containing the Anti Forgery Token) to the request that is about to be sent
requestMsg.CopyCookiesFromResponse(responseMsg);
return(await httpClient.SendAsync(requestMsg));
}
