/// <summary>
/// API post using multipart/form-data.
/// </summary>
/// <param name="application">The full Uri you want to call (including any get parameters)</param>
/// <param name="getParameters">Get parameters (or null if none)</param>
/// <param name="postParameters">Post parameters as an object or JObject
/// </param>
/// <returns>The result as a JObject, with MetaData filled in.</returns>
public async Task <JObject> PostFormAsync(string application, object getParameters, object postParameters, params string[] fileParameterNames)
{
string uri = AddGetParams(makeUri(application), getParameters);
using (DisposableCollection objectsToDispose = new DisposableCollection()) {
MultipartFormDataContent content = objectsToDispose.Add(new MultipartFormDataContent());
JObject data = postParameters.ToJObject();
foreach (var o in data)
{
if (o.Value.Type == JTokenType.Null)
{
continue;
}
if (Array.IndexOf(fileParameterNames, o.Key) >= 0)
{
string filename = o.Value.ToString();
FileStream fs = objectsToDispose.Add(new FileStream(filename, FileMode.Open));
HttpContent v = objectsToDispose.Add(new StreamContent(fs));
content.Add(v, o.Key, Path.GetFileName(filename));
}
else
{
HttpContent v = objectsToDispose.Add(new StringContent(o.Value.ToString()));
content.Add(v, o.Key);
}
}
return(await SendMessageAsync(HttpMethod.Post, uri, content));
}
}
/// <summary>
/// Send a message and get the result.
/// Deal with rate limiting return values and redirects.
/// </summary>
/// <param name="method">Get/Post/etc.</param>
/// <param name="uri">The full Uri you want to call (including any get parameters)</param>
/// <param name="postParameters">Post parameters as an object or JObject</param>
public async Task <HttpResponseMessage> SendMessageAsyncAndGetResponse(HttpMethod method, string uri, object postParameters = null)
{
LastRequest = "";
LastResponse = "";
for (; ;)
{
string content = null;
using (DisposableCollection disposeMe = new DisposableCollection()) {
var message = disposeMe.Add(new HttpRequestMessage(method, uri));
if (!string.IsNullOrEmpty(Settings.AccessToken))
{
message.Headers.Authorization = new AuthenticationHeaderValue("Bearer", Settings.AccessToken);
}
if (!string.IsNullOrEmpty(Settings.CsrfToken))
{
message.Headers.Add("X-CSRF-Token", Settings.CsrfToken);
}
message.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
message.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("text/html"));
message.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("*/*"));
message.Headers.Add("User-Agent", Settings.ApplicationName);
if (postParameters != null)
{
if (postParameters is string s)
{
content = s;
message.Content = disposeMe.Add(new StringContent(content, Encoding.UTF8, "text/plain"));
}
else if (postParameters is FileStream f)
{
content = Path.GetFileName(f.Name);
f.Position = 0;
message.Content = disposeMe.Add(new StreamContent(f));
string contentType = MimeMapping.MimeUtility.GetMimeMapping(content);
message.Content.Headers.ContentType = new MediaTypeHeaderValue(contentType);
message.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
{
FileName = content
};
message.Content.Headers.ContentLength = f.Length;
content = "File: " + content;
}
else if (postParameters is HttpContent)
{
message.Content = (HttpContent)postParameters;
}
else
{
content = postParameters.ToJson();
message.Content = disposeMe.Add(new StringContent(content, Encoding.UTF8, "application/json"));
}
}
LastRequest = $"{message}:{content}";
HttpResponseMessage result;
int backoff = 500;
int delay;
if (Settings.LogRequest > 0)
{
Log($"Sent -> {(Settings.LogRequest > 1 ? message.ToString() : message.RequestUri.ToString())}:{content}");
}
result = await _client.SendAsync(message);
LastResponse = result.ToString();
if (Settings.LogResult > 1)
{
Log($"Received -> {result}");
}
switch (result.StatusCode)
{
case HttpStatusCode.Found: // Redirect
uri = result.Headers.Location.AbsoluteUri;
delay = 1;
break;
case (HttpStatusCode)429: // TooManyRequests
delay = 5000;
break;
case HttpStatusCode.BadGateway:
case HttpStatusCode.ServiceUnavailable:
case HttpStatusCode.GatewayTimeout:
backoff *= 2;
delay = backoff;
if (delay > 16000)
{
return(result);
}
break;
default:
return(result);
}
result.Dispose();
Thread.Sleep(delay);
}
}
}
