internal async Task HttpPostS3Async(string filepath, Signature signature) {
FileInfo file = new FileInfo(filepath);
if (file.Exists == false) {
throw new VzaarApiException ("File does not exsist: "+filepath);
}
string hostname = (string)signature ["upload_hostname"];
//move signature to Dictionary
Dictionary<string, string> postFields = new Dictionary<string, string>();
postFields.Add ("x-amz-credential", (string)signature["x-amz-credential"]);
postFields.Add ("x-amz-algorithm", (string)signature["x-amz-algorithm"]);
postFields.Add ("x-amz-date", (string)signature["x-amz-date"]);
postFields.Add ("x-amz-signature", (string)signature["x-amz-signature"]);
postFields.Add ("x-amz-meta-uploader", Client.UPLOADER + Client.VERSION);
postFields.Add ("acl",(string)signature["acl"]);
postFields.Add ("bucket",(string)signature["bucket"]);
postFields.Add ("policy",(string)signature["policy"]);
postFields.Add ("success_action_status",(string)signature["success_action_status"]);
string key = (string)signature["key"];
string fileKey = "";
if(String.IsNullOrEmpty(key) == false)
fileKey = key.Replace ("${filename}", file.Name);
postFields.Add ("key",fileKey);
long? parts = signature ["parts"] as long?;
if (parts == null) {
//upload file in POST form
FileStream fileStream;
using(fileStream = new FileStream (filepath, FileMode.Open, FileAccess.Read)) {
await HttpPostMfdcAsync (hostname, file.Name, postFields, fileStream);
// response is validated in the HttpPostMfdcAsync
}
} else {
string keyCache = postFields["key"];
long chunk = 0;
if (signature ["part_size_in_bytes"] == null)
throw new VzaarApiException ("File Upload: not valid 'part_size_in_bytes'");
int chunkSize = Convert.ToInt32((long)signature ["part_size_in_bytes"]);
byte[] buffer = new byte[chunkSize];
int bytesCount;
FileStream fileStream;
using (fileStream = new FileStream (filepath, FileMode.Open, FileAccess.Read)) {
while ((bytesCount = await fileStream.ReadAsync(buffer,0,chunkSize)) != 0 ) {
string chunkKey = keyCache + "." + chunk.ToString ();
postFields.Remove ("key");
postFields.Add ("key", chunkKey);
MemoryStream chunkStream;
using (chunkStream = new MemoryStream (buffer,0,bytesCount)) {
await HttpPostMfdcAsync (hostname, file.Name, postFields, chunkStream);
// response is validated in the HttpPostMfdcAsync
}
VideoUploadProgressEventArgs progress = new VideoUploadProgressEventArgs () {
totalParts = (long)parts,
uploadedChunk = chunk
};
UploadProgress (this, progress);
chunk++;
}
}
}
}