My error is The request was aborted: Could not create SSL/TLS secure channel. I am using the example code from the Avaya office management api documentation. I can't get CertificateValidationCallback to compile.
protected void Page_Load(object sender, EventArgs e) {
ServicePointManager.ServerCertificateValidationCallback = new
System.Net.Security.RemoteCertificateValidationCallback(CertificateValidationCallback);
String username = "";
String password = "";
String url = "https://10.207.251.41:7070/WebManagement/ws/sdk/security/authenticate";
CookieContainer cookieContainer = new CookieContainer();
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Credentials = CredentialCache.DefaultCredentials;
request.Method = "GET";
request.ContentType = "application/json";
request.Headers.Add("X-User-Client", "Avaya-WebAdmin");
request.Headers.Add("X-User-Agent", "Avaya-SDKUser");
String credentials = Convert.ToBase64String(ASCIIEncoding.ASCII.GetBytes(username + ":" + password));
request.Headers.Add("Authorization", "Basic " + credentials);
request.CookieContainer = cookieContainer;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
var resStream = response.GetResponseStream();
var reader = new StreamReader(resStream);
String responseContent = reader.ReadToEnd();
response.Close();
}