//------------------------------------------------------------------------------------------------
// ***********************************************************************************************
// Internal
//------------------------------------------------------------------------------------------------
private async Task <long> getFileOffset(string URL)
{
var client = new TUSHttpClient();
var request = new TUSHttpRequest(URL);
request.Method = "HEAD";
request.AddHeader("Tus-Resumable", "1.0.0");
var response = await client.PerformRequestAsync(request);
Debug.Log("get offset response: " + response.ToString());
if (response.StatusCode == HttpStatusCode.NoContent || response.StatusCode == HttpStatusCode.OK)
{
if (response.Headers.ContainsKey("Upload-Offset"))
{
return(long.Parse(response.Headers["Upload-Offset"]));
}
else
{
throw new Exception("Offset Header Missing");
}
}
else
{
throw new Exception("getFileOffset failed. " + response.ResponseString);
}
}
internal async Task <TUSServerInfo> getServerInfo(string URL)
{
var client = new TUSHttpClient();
var request = new TUSHttpRequest(URL);
request.Method = "OPTIONS";
var response = await client.PerformRequestAsync(request);
if (response.StatusCode == HttpStatusCode.NoContent || response.StatusCode == HttpStatusCode.OK)
{
// Spec says NoContent but tusd gives OK because of browser bugs
var info = new TUSServerInfo();
response.Headers.TryGetValue("Tus-Resumable", out info.Version);
response.Headers.TryGetValue("Tus-Version", out info.SupportedVersions);
response.Headers.TryGetValue("Tus-Extension", out info.Extensions);
string MaxSize;
if (response.Headers.TryGetValue("Tus-Max-Size", out MaxSize))
{
info.MaxSize = long.Parse(MaxSize);
}
else
{
info.MaxSize = 0;
}
return(info);
}
else
{
throw new Exception("getServerInfo failed. " + response.ResponseString);
}
}
internal async Task <string> Create(string URL, Stream stream, Dictionary <string, string> metadata = null)
{
if (metadata == null)
{
metadata = new Dictionary <string, string>();
}
var requestUri = new Uri(URL);
var client = new TUSHttpClient();
var request = new TUSHttpRequest(URL);
request.Method = "POST";
request.AddHeader("Tus-Resumable", "1.0.0");
request.AddHeader("Upload-Length", stream.Length.ToString());
request.AddHeader("Content-Length", "0");
var metadatastrings = new List <string>();
foreach (var meta in metadata)
{
string k = meta.Key.Replace(" ", "").Replace(",", "");
string v = Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(meta.Value));
metadatastrings.Add(string.Format("{0} {1}", k, v));
}
request.AddHeader("Upload-Metadata", string.Join(",", metadatastrings.ToArray()));
var response = await client.PerformRequestAsync(request);
if (response.StatusCode == HttpStatusCode.Created)
{
if (response.Headers.ContainsKey("Location"))
{
Uri locationUri;
if (Uri.TryCreate(response.Headers["Location"], UriKind.RelativeOrAbsolute, out locationUri))
{
if (!locationUri.IsAbsoluteUri)
{
locationUri = new Uri(requestUri, locationUri);
}
return(locationUri.ToString());
}
else
{
throw new Exception("Invalid Location Header");
}
}
else
{
throw new Exception("Location Header Missing");
}
}
else
{
throw new Exception("CreateFileInServer failed. " + response.ResponseString);
}
}
//------------------------------------------------------------------------------------------------
internal async Task <bool> Upload(string URL, Stream stream)
{
Debug.Log("uploading to " + URL);
long Offset = 0;// this.getFileOffset(URL);
var client = new TUSHttpClient();
System.Security.Cryptography.SHA1 sha = new System.Security.Cryptography.SHA1Managed();
int ChunkSize = (int)Math.Ceiling(3 * 1024.0 * 1024.0); //3 mb
while (Offset < stream.Length)
{
Debug.Log("Uploading chunk, [" + Offset + " / " + stream.Length + "]");
stream.Seek(Offset, SeekOrigin.Begin);
byte[] buffer = new byte[ChunkSize];
var BytesRead = stream.Read(buffer, 0, ChunkSize);
Array.Resize(ref buffer, BytesRead);
var sha1hash = sha.ComputeHash(buffer);
var request = new TUSHttpRequest(URL);
request.Method = "PATCH";
request.AddHeader("Tus-Resumable", "1.0.0");
request.AddHeader("Upload-Offset", string.Format("{0}", Offset));
request.AddHeader("Upload-Checksum", "sha1 " + Convert.ToBase64String(sha1hash));
request.AddHeader("Content-Type", "application/offset+octet-stream");
request.BodyBytes = buffer;
try
{
var response = await client.PerformRequestAsync(request);
Debug.Log("uploading chunk result: " + response.StatusCode);
if (response.StatusCode == HttpStatusCode.NoContent)
{
Offset += BytesRead;
Debug.Log("Uploaded chunk = [" + Offset + "]");
if (Offset == stream.Length)
{
Debug.Log("File completely uploaded");
return(true);
}
}
else
{
Debug.Log("Failed to write to server");
return(false);
}
}
catch (Exception ex)
{
Debug.Log("Exception during upload: " + ex);
}
}
return(false);
}
//------------------------------------------------------------------------------------------------
internal async Task <TUSHttpResponse> Download(string URL)
{
var client = new TUSHttpClient();
var request = new TUSHttpRequest(URL);
request.Method = "GET";
TUSHttpResponse response = null;
try
{
response = await client.PerformRequestAsync(request);
} catch (WebException exception)
{
Debug.Log(exception);
}
return(response);
}
//------------------------------------------------------------------------------------------------
internal async Task <TUSHttpResponse> Head(string URL)
{
var client = new TUSHttpClient();
var request = new TUSHttpRequest(URL);
request.Method = "HEAD";
request.AddHeader("Tus-Resumable", "1.0.0");
try
{
var response = await client.PerformRequestAsync(request);
return(response);
}
catch (TUSException ex)
{
var response = new TUSHttpResponse();
response.StatusCode = ex.statuscode;
return(response);
}
}