/// <summary>
/// Sends a POST request.
/// </summary>
/// <param name="postData">A string of data to post</param>
/// <param name="authentification">An IAuthentificationConfiguration. Only Basic is currently supported.</param>
/// <param name="endpoint">The endpoint to send the statement to</param>
/// <param name="callback">The asynchronous callback</param>
/// <returns>The returned stream</returns>
/// <remarks>Providing null for the callback means this is intended to be synchronous. Any exceptions will be thrown and must be handled in the main thread.</remarks>
public static string PostRequest(string postData, string endpoint, IAuthenticationConfiguration authentification, TCAPI.AsyncPostCallback callback, string x_experience_api_version)
{
string result = null;
byte[] postDataByteArray = Encoding.UTF8.GetBytes(postData);
for (int attempt = 0; attempt <= REATTEMPT_COUNT; attempt++)
{
WebRequest request = (HttpWebRequest)WebRequest.Create(endpoint);
request.Method = "POST";
request.ContentType = "application/json";
request.ContentLength = postDataByteArray.Length;
AddExperienceVersionHeader(request.Headers, x_experience_api_version);
AddAuthHeader(request.Headers, authentification);
try
{
result = SendRequest(request, postDataByteArray);
}
catch (WebException e)
{
if (attempt < REATTEMPT_COUNT)
{
try
{
ThrowHttpException(e);
}
catch (InternalServerErrorException)
{
Thread.Sleep(RETRY_TIMEOUT);
continue;
}
catch (ConnectionFailedException)
{
Thread.Sleep(RETRY_TIMEOUT);
continue;
}
catch (Exception)
{
// Suppress it for now
}
}
if (callback == null)
{
// Synchronous request, let the implementer decide
throw e;
}
else
{
try
{
ThrowHttpException(e);
}
catch (InternalServerErrorException)
{
// Connectivity Issues
callback.AsyncPostConnectionFailed(e);
}
catch (ConnectionFailedException)
{
// Connectivity Issues
callback.AsyncPostConnectionFailed(e);
}
catch (Exception)
{
// Permanent failure
callback.AsyncPostFailure(e);
}
}
}
break;
}
return result;
}