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@Kuranes
Last active May 6, 2020 18:57
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Sketchfab Upload using c# .net
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading.Tasks;
namespace Test
{
public static class FormUpload
{
private static readonly Encoding encoding = Encoding.UTF8;
public static HttpWebResponse MultipartFormDataPost(string postUrl,
string userAgent, Dictionary<string, object> postParameters)
{
string formDataBoundary = String.Format("----------{0:N}",
Guid.NewGuid());
string contentType = "multipart/form-data; boundary=" +
formDataBoundary;
byte[] formData = GetMultipartFormData(postParameters,
formDataBoundary);
return PostForm(postUrl, userAgent, contentType, formData);
}
private static HttpWebResponse PostForm(string postUrl, string
userAgent, string contentType, byte[] formData)
{
HttpWebRequest request = WebRequest.Create(postUrl) as
HttpWebRequest;
if (request == null)
{
throw new NullReferenceException("request is not a http
request");
}
// Set up the request properties.
request.Method = "POST";
request.ContentType = contentType;
request.UserAgent = userAgent;
request.CookieContainer = new CookieContainer();
request.ContentLength = formData.Length;
// You could add authentication here as well if needed:
// request.PreAuthenticate = true;
// request.AuthenticationLevel =
System.Net.Security.AuthenticationLevel.MutualAuthRequested;
// request.Headers.Add("Authorization", "Basic " +
Convert.ToBase64String(System.Text.Encoding.Default.GetBytes("username" +
":" + "password")));
// Send the form data to the request.
using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(formData, 0, formData.Length);
requestStream.Close();
}
return request.GetResponse() as HttpWebResponse;
}
private static byte[] GetMultipartFormData(Dictionary<string,
object> postParameters, string boundary)
{
Stream formDataStream = new System.IO.MemoryStream();
bool needsCLRF = false;
foreach (var param in postParameters)
{
// Thanks to feedback from commenters, add a CRLF to allow
multiple parameters to be added.
// Skip it on the first parameter, add it to subsequent
parameters.
if (needsCLRF)
formDataStream.Write(encoding.GetBytes("\r\n"), 0,
encoding.GetByteCount("\r\n"));
needsCLRF = true;
if (param.Value is FileParameter)
{
FileParameter fileToUpload = (FileParameter)param.Value;
// Add just the first part of this param, since we will
write the file data directly to the Stream
string header =
string.Format("--{0}\r\nContent-Disposition: form-data; name=\"{1}\";
filename=\"{2}\"\r\nContent-Type: {3}\r\n\r\n",
boundary,
param.Key,
fileToUpload.FileName ?? param.Key,
fileToUpload.ContentType ??
"application/octet-stream");
formDataStream.Write(encoding.GetBytes(header), 0,
encoding.GetByteCount(header));
// Write the file data directly to the Stream, rather
than serializing it to a string.
formDataStream.Write(fileToUpload.File, 0,
fileToUpload.File.Length);
}
else
{
string postData =
string.Format("--{0}\r\nContent-Disposition: form-data;
name=\"{1}\"\r\n\r\n{2}",
boundary,
param.Key,
param.Value);
formDataStream.Write(encoding.GetBytes(postData), 0,
encoding.GetByteCount(postData));
}
}
// Add the end of the request. Start with a newline
string footer = "\r\n--" + boundary + "--\r\n";
formDataStream.Write(encoding.GetBytes(footer), 0,
encoding.GetByteCount(footer));
// Dump the Stream into a byte[]
formDataStream.Position = 0;
byte[] formData = new byte[formDataStream.Length];
formDataStream.Read(formData, 0, formData.Length);
formDataStream.Close();
return formData;
}
public class FileParameter
{
public byte[] File { get; set; }
public string FileName { get; set; }
public string ContentType { get; set; }
public FileParameter(byte[] file) : this(file, null) { }
public FileParameter(byte[] file, string filename) : this(file,
filename, null) { }
public FileParameter(byte[] file, string filename, string
contenttype)
{
File = file;
FileName = filename;
ContentType = contenttype;
}
}
}
public class Program
{
public static void Main(string[] args)
{
// Read file data
FileStream fs = new FileStream("c:\\Exports.zip",
FileMode.Open, FileAccess.Read);
byte[] data = new byte[fs.Length];
fs.Read(data, 0, data.Length);
fs.Close();
// Generate post objects
Dictionary<string, object> postParameters = new Dictionary<string,
object>();
postParameters.Add("token", "**mytoken***");
postParameters.Add("name", "mymodeltitle");
postParameters.Add("modelFile", new FormUpload.FileParameter(data,
"Exports.zip", "application/zip"));
// Create request and receive response
string postURL = "https://api.sketchfab.com/v2/models";
string userAgent = "Someone";
HttpWebResponse webResponse = FormUpload.MultipartFormDataPost(postURL,
userAgent, postParameters);
// Process response
StreamReader responseReader = new
StreamReader(webResponse.GetResponseStream());
string fullResponse = responseReader.ReadToEnd();
webResponse.Close();
//Response.Write(fullResponse);
}
}
}
@p4535992
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This code is valid even for the newest version of the api the version 3 (https://api.sketchfab.com/v3/models) ? I'm asking becuase i receveid the error 401 from the server like it is a non valid operation.

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