Develop Reference

WOPI Editing Document

I have implemented the putFile endpoint for WOPI client (i.e. Office Online)
When clicking the edit document button, what should be the first request go to WOPI client?
I have called following URL on edit link:
POST https://word-edit.officeapps-df.live.com/we/wordviewerframe.aspx?WOPISrc=https://domain/WOPI_IntegrationDemo/wopi/files/Sample_application_content3.docx/
But document says that it'll perform a lock request first. What does it mean exactly?

From your question I understand that you're implementing a WOPI host. The URL looks pretty much ok - just make sure the WOPISrc parameter is escaped and that you include access_token parameter.
When you click the URL you instruct the WOPI client (OO/OWA) to load a field defined by WOPISrc from WOPI host.
The WOPI client usually tries to acquire a lock (exclusive write access) from WOPI host first. For those purposes you should implement the LOCK operation in your WOPI host according to the documentation.

First you must Add Access token for this
then you try to word edit it call to
1.get file info. Get [Route("files/{name}/")]
2.post file. Post [Route("files/{name}/")]
in hear you have to implement response for Lock files Cobalt Request
var response = new HttpResponseMessage(HttpStatusCode.OK);
if (xWopiOverride == "LOCK" || string.Equals(xWopiOverride, "UNLOCK"))
{
//for docx, xlsx and pptx
response = new HttpResponseMessage(HttpStatusCode.OK);
}
else if (string.Equals(xWopiOverride, "COBALT"))
{
//cobalt, for docx and pptx
EditSession editSession = EditSessionManager.Instance.GetSession(access_token);
if (editSession == null)
{
editSession = new FileSession(access_token, fileInfo, matterInfo, dpsUserName, databaseInfo, string.Empty, string.Empty, string.Empty, false);
EditSessionManager.Instance.AddSession(editSession);
}
var memoryStream = new MemoryStream();
HttpContext.Current.Request.InputStream.CopyTo(memoryStream);
var atomFromByteArray = new AtomFromByteArray(memoryStream.ToArray());
ProtocolVersion protocolVersion;
object context;
var requestBatch = new RequestBatch();
requestBatch.DeserializeInputFromProtocol(atomFromByteArray, out context, out protocolVersion);
editSession.ExecuteRequestBatch(requestBatch);
foreach (var request in requestBatch.Requests)
{
if (request.GetType() == typeof(PutChangesRequest) && request.PartitionId == FilePartitionId.Content)
{
editSession.Save();
break;
}
}
var responseContent = requestBatch.SerializeOutputToProtocol(protocolVersion, context);
var correlationId = Request.Headers.GetValues("X-WOPI-CorrelationID").First();
response.Headers.Add("X-WOPI-CorrelationID", correlationId);
response.Headers.Add("request-id", correlationId);
var pushStreamContent = new PushStreamContent((outputStream, httpContext, transportContent) =>
{
responseContent.CopyTo(outputStream);
outputStream.Close();
});
response.Content = pushStreamContent;
response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
response.Content.Headers.ContentLength = responseContent.Length;
}
return response;

Swift equivalent of inputStream

Heading
I am converting my android app into a IOS app using swift 2.0 and Parse Backend, I would just like to know the equivalent to this code:
Code
InputStream rawData = (InputStream) new URL(https_url).getContent();
Bitmap UniqueQRCode = BitmapFactory.decodeStream(rawData);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
// Compress image to lower quality scale 1 - 100
UniqueQRCode.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] image = stream.toByteArray();

It is better to do an asynchronous call on iOS. That will lead to more responsive applications.
Here is a simple example to download an image from the web and display it in a UIImageView:
class ViewController: UIViewController
{
#IBOutlet weak var imageView: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
if let url = NSURL(string: "https://mozorg.cdn.mozilla.net/media/img/firefox/new/header-firefox-high-res.d121992bf56c.png") {
let task = NSURLSession.sharedSession().dataTaskWithRequest(NSURLRequest(URL: url)) { (data, response, error) -> Void in
if error == nil && data != nil { // Needs better error handling based on what your server returns
if let image = UIImage(data: data!) {
dispatch_async(dispatch_get_main_queue()) {
self.imageView.image = image
}
}
}
}
task.resume()
}
}
}
If you run this on iOS 9 then you do need to set NSAllowsArbitraryLoads to YES in the application's Info.plist. There are lots of postings about that in more detail.

Blocking read function in c in a client/server application

I'm currently developing a client/server architecture between a tablet (client) and a MAC/PC (server). I am doing on both side some real-time rendering and I need communication between the two.
The problem is that I need to do some operation on the string I get from my client (which is basically a rotation matrix). This string is therefore to be at most 16 float numbers that I previously transform into a coma-separated-value string.
Therefore what I should get from my client is something like:
1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0
Server-side, I do some processing of that string to get back my rotation matrix as a float array of 16 elements. The problem is that sometimes I get more than just 16 elements from the client on the server side at once. I for instance get
1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0
1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0
1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0
So that when I try to split it, I go above the 16 element limits which is not good at all for me.
My question is: is there a way to prevent the server and/or the client to read/send more than one complete matrix at a time? Since I'm using a tablet and some real-time rendering I would like to be able to save as much processing power as possible.
Here is the code that I'm using (just snippets as files are quite big)
Client:
if (connected == true && matrixupdated == true && this.hasMatrixChanged()){
try {
this.inFromServer = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
this.outToServer= new DataOutputStream(clientSocket.getOutputStream());
this.sentence = this.getStringFromMatrix();
outToServer.writeBytes(sentence + '\n');
this.hasServerProcessed = false ;
System.arraycopy(matrix, 0, previousMatrix, 0, 16); //I check whether the matrix changes enough for me to send it to the server
}catch (Exception e) {
Log.e("ClientActivity", "S: Error", e);
}
this.matrixupdated = false ;
Server :
while( (read_size = recv(sock , client_message , 2000 , 0)) > 0 )
{
smatrix = client_message ; //smatrix is a true c++ string
pthread_mutex_lock(&mymutex);
pthread_cond_wait(&mycondition, &mymutex); // prevent real-time rendering to try and use the matrix at the same time as this function
std::stringstream ss(smatrix);
while(std::getline(ss, tok, ',')) {
matrix[i] = ::atof(tok.c_str());
i++ ;
}
i = 0 ;
pthread_mutex_unlock(&mymutex);
}

Working as designed. TCP is a byte stream protocol. There are no message boundaries. If you want messages you have to implement them yourself.

Maximum as3 adobe JSON string length

I've written Socket Communication server with Java and a AIR programm with AS3, using Socket connection.
The communication through socket connection is done with JSON serialization.
Sometimes with really long JSON strungs over socket, AS3 code says that there is a JSON parse error.
Each JSON string I end with end string to let programm know, that it is not the end of the message, so this is not the problem with AIR programm reading the message in parts.
The error occurs only with realy long json string, for example, string with 78031 length. Is there any limits for JSON serialization?

I had the same problem. The problem is in Flash app reading data from socket.
The point is that Flash ProgressEvent.SOCKET_DATA event fires even when server didn't send all the data, and something is left (especially when the data is big and the connection is slow).
So something like {"key":"value"} comes in two (or more) parts, like: {"key":"val and ue"}. Also sometimes you might receive several joined JSONs in one message like {"json1key":"value"}{"json2key":"value"} - built-in Flash JSON parser cannot handle these too.
To fight this I recommend you to modify your SocketData handler in the Flash app to add a cache for received strings. Like this:
// declaring vars
private var _socket:Socket;
private var _cache: String = "";
// adding EventListener
_socket.addEventListener(ProgressEvent.SOCKET_DATA, onSocketData);
private function onSocketData(e: Event):void
{
// take the incoming data from socket
var fromServer: ByteArray = new ByteArray;
while (_socket.bytesAvailable)
{
_socket.readBytes(fromServer);
}
var receivedToString: String = fromServer.toString();
_cache += receivedToString;
if (receivedToString.length == 0) return; // nothing to parse
// convert that long string to the Vector of JSONs
// here is very small and not fail-safe alghoritm of detecting separate JSONs in one long String
var jsonPart: String = "";
var jsonVector: Vector.<String> = new Vector.<String>;
var bracketsCount: int = 0;
var endOfLastJson: int = 0;
for (var i: int = 0; i < _cache.length; i++)
{
if (_cache.charAt(i) == "{") bracketsCount += 1;
if (bracketsCount > 0) jsonPart = jsonPart.concat(_cache.charAt(i));
if (_cache.charAt(i) == "}")
{
bracketsCount -= 1;
if (bracketsCount == 0)
{
jsonVector.push(jsonPart);
jsonPart = "";
endOfLastJson = i;
}
}
}
// removing part that isn't needed anymore
if (jsonVector.length > 0)
{
_cache = _cache.substr(endOfLastJson + 1);
}
for each (var part: String in jsonVector)
{
trace("RECEIVED: " + part); // voila! here is the full received JSON
}
}

According to Adobe, it appears that you are not facing a JSON problem but instead a Socket limitation.
A String you may send over a Socket via writeUTF and readUTF is limited by 65,535 bytes. This is due to the string being prepended with a 16 bit unsigned integer rather than a null terminated string.

Java byte[] to Flex BitmapImage source

I have flex mobile client, and it takes java server byte[] as flash.utils.ByteArray, but when I want to use as a source of my bitmapImage compiler says that unknown type:
private function onResult3(event:ResultEvent,token:Object):void
{
if(event.result!=null)
{
var Lder:Loader=new Loader();
var ba:ByteArray=event.result as ByteArray;
Lder.loadBytes(ba);// exception is thrown here
doktorResim.bitmapData.draw(Lder);
}
}
Any help, suggestion?

If Java is reading and sending bytes properly, then you need to wait for flex to load all bytes for thats use event complete of LoaderInfo see also Loader Class
var url:String = "http://www.helpexamples.com/flash/images/image2.jpg";
var urlRequest:URLRequest = new URLRequest(url);
var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loader_complete);
loader.load(urlRequest);
addChild(loader);
function loader_complete(evt:Event):void {
var target_mc:Loader = evt.currentTarget.loader as Loader;
target_mc.x = (stage.stageWidth - target_mc.width) / 2;
target_mc.y = (stage.stageHeight - target_mc.height) / 2;
}
Hopes that helps