/// <summary>
/// Tests the connection to USFT
/// </summary>
/// <param name="AsAccount">(Optional) If this parameter is included, the method will be run on behalf of the specified child Account.</param>
/// <returns>True if the /Test method completes successfully</returns>
/// <exception cref="RestException">Contains details of an unsuccessful request</exception>
public bool TestConnection(Account AsAccount = null)
{
using (HttpWebResponse response = AttemptRequest(uriPath_Test + AppendAccount(AsAccount), verb_Read))
{
if (response.StatusCode == HttpStatusCode.OK)
{
return(true);
}
else
{
throw RestException.Create(response);
}
}
}
/// <summary>
/// Send a custom request to the API
/// </summary>
/// <typeparam name="T">Type of the object you expect in return</typeparam>
/// <param name="Path">Path of the API call, eg: "/Test"</param>
/// <param name="Method">HTTP Verb to use, eg: "GET", "POST", etc.</param>
/// <param name="BodyContent">Object to submit in the request body, usually for Creating or Updating records</param>
/// <returns>Object returned by the database</returns>
/// <exception cref="RestException">A RestException containing the information returned by the server for an unsuccessful request</exception>
private T RetrieveResponse <T>(string Path, string Method = "GET", object BodyContent = null, bool DoAuthentication = true)
{
using (HttpWebResponse response = AttemptRequest(Path, Method, BodyContent, DoAuthentication))
{
if (response.StatusCode == HttpStatusCode.OK)
{
StreamReader reader = new StreamReader(response.GetResponseStream());
string content = reader.ReadToEnd();
T ret = JsonConvert.DeserializeObject <T>(content);
return(ret);
}
else
{
throw RestException.Create(response);
}
}
}
/// <summary>
/// Create a new RestException from an unsuccessful HttpWebResponse.
/// </summary>
/// <param name="UnsuccessfulResponse">The HttpWebResponse that failed to return successfully.</param>
/// <returns>A RestException with Message determined by the HttpWebResponse info.</returns>
public static RestException Create(HttpWebResponse UnsuccessfulResponse)
{
StreamReader reader = new StreamReader(UnsuccessfulResponse.GetResponseStream());
string content = reader.ReadToEnd();
RestException ret = new RestException();
try
{
UnsuccessfulBody body = JsonConvert.DeserializeObject <UnsuccessfulBody>(content);
ret = new RestException(string.Format("{0} returned {1}: {2}", UnsuccessfulResponse.ResponseUri.PathAndQuery, UnsuccessfulResponse.StatusCode, body.Message));
}
catch (Exception exc)
{
ret = new RestException(string.Format("{0} returned {1}", UnsuccessfulResponse.ResponseUri, UnsuccessfulResponse.StatusCode), exc);
}
finally
{
ret.UnsuccessfulResponse = UnsuccessfulResponse;
}
return(ret);
}
private HttpWebResponse AttemptRequest(string Path, string Method, string PostString, bool DoAuthentication, DateTime?dateTimeOverride = null)
{
string address = uriBase + Path;
Uri uri = new Uri(address);
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(uri);
if (Proxy != null)
{
request.Proxy = Proxy;
}
if (DoAuthentication)
{
string AuthString;
if (Authentication == AuthenticationMode.USFT)
{
// Building the http Date header is a little tricky.
// HttpWebRequest insists on formatting the string itself, because incorrectly formatted values are very common.
DateTime d;
if (dateTimeOverride.HasValue)
{
d = dateTimeOverride.Value;
}
else
{
d = DateTime.Now;
}
request.Date = d;
// So, we let it do so then ask how it decided to format that.
// The REST service will always use the literal string sent to the server, rather than rely on one date format or another.
string datestring = request.Headers["Date"];
// Everything else is cake.
string hash = Security.GenerateHash(ApiKey, HashDataPrefix + uri.AbsolutePath + datestring);
AuthString = string.Format("{0}{1}:{2}", auth_Prefix_USFT, Username, hash);
}
else if (Authentication == AuthenticationMode.Basic)
{
AuthString = "Basic " +
Convert.ToBase64String(
Encoding.ASCII.GetBytes(string.Format("{0}:{1}", Username, ApiKey)));
}
else
{
throw new Exception("Unknown AuthenticationMode");
}
request.Headers.Add(HttpRequestHeader.Authorization, AuthString);
}
request.Method = Method;
request.ServicePoint.Expect100Continue = false;
if (!string.IsNullOrEmpty(PostString))
{
byte[] postBytes = Encoding.ASCII.GetBytes(PostString);
request.ContentType = "application/json";
request.ContentLength = postBytes.Length;
Stream postStream = request.GetRequestStream();
postStream.Write(postBytes, 0, postBytes.Length);
postStream.Flush();
}
try
{
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
return(response);
}
catch (WebException exc)
{
if (exc.Response != null)
{
throw RestException.Create((HttpWebResponse)exc.Response);
}
else
{
throw new RestException("No response generated", exc);
}
}
catch (Exception exc)
{
throw new RestException(
"Unexpected exception encountered while attempting HttpWebRequest.GetResponse()", exc);
}
}
