As others have commented it depend on what you are calling with HttpClient. I get what you meant though and so here are some exceptions thrown with typical method calls. SendAsync can throw: ArgumentNullException The request was null. InvalidOperationException The request message was already sent by the HttpClient instance. HttpRequestException The request failed due to … Read more
It seems that this is caused by a recent security update for the .NET Framework: MS12-074: Vulnerabilities in .NET Framework could allow remote code execution: November 13, 2012 (KB 2745030) It all boils down to the following code in the web proxy resolution: [RegistryPermission(SecurityAction.Assert, Read=@”HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework”)] private static void InitializeFallbackSettings() { allowFallback = false; try { … Read more
You might want to set the mediaType in StringContent like below: var httpContent = new StringContent(workItem.XDocument.ToString(), Encoding.UTF8, “text/xml”); OR var httpContent = new StringContent(workItem.XDocument.ToString(), Encoding.UTF8, “application/xml”);
The default implementation of OAuthAuthorizationServerHandler only accepts form encoding (i.e. application/x-www-form-urlencoded) and not JSON encoding (application/JSON). Your request’s ContentType should be application/x-www-form-urlencoded and pass the data in the body as: grant_type=password&username=Alice&password=password123 i.e. not in JSON format. The chrome example above works because it is not passing data as JSON. You only need this for getting … Read more
You should be able to use the TryGetValues method. HttpHeaders headers = response.Headers; IEnumerable<string> values; if (headers.TryGetValues(“X-BB-SESSION”, out values)) { string session = values.First(); }
You can do it natively with .Net 4.5+. I tried doing it your way and then I just found a method in Intellisense that seemed to make sense. https://learn.microsoft.com/en-us/dotnet/api/system.io.stream.copytoasync?view=netframework-4.7.2 uri = new Uri(generatePdfsRetrieveUrl + pdfGuid + “.pdf”); HttpClient client = new HttpClient(); var response = await client.GetAsync(uri); using (var fs = new FileStream( HostingEnvironment.MapPath(string.Format(“~/Downloads/{0}.pdf”, pdfGuid)), … Read more
Try using ReadAsStringAsync() instead. var foo = resp.Content.ReadAsStringAsync().Result; The reason why it ReadAsAsync<string>() doesn’t work is because ReadAsAsync<> will try to use one of the default MediaTypeFormatter (i.e. JsonMediaTypeFormatter, XmlMediaTypeFormatter, …) to read the content with content-type of text/plain. However, none of the default formatter can read the text/plain (they can only read application/json, application/xml, … Read more
You’re setting the proxy credentials in the wrong place. httpClientHandler.Credentials are the credentials you give to the server after the proxy has already established a connection. If you get these wrong, you’ll probably get a 401 or 403 response. You need to set the credentials given to the proxy, or it will refuse to connect … Read more
You need to consume the response body before you can reuse the connection for another request. You should not only read the response status, but read the response InputStream fully to the last byte whereby you just ignore the read bytes.
Yes, you can Bypass the certificate using below code… HttpClientHandler clientHandler = new HttpClientHandler(); clientHandler.ServerCertificateCustomValidationCallback = (sender, cert, chain, sslPolicyErrors) => { return true; }; // Pass the handler to httpclient(from you are calling api) HttpClient client = new HttpClient(clientHandler);