ActionScript 3.0 :: Java-Flash Communication With Sockets And AMF Coding?
Oct 17, 2010
I'm bothering with Java-Flash communication. At the beggining, I used XML Socket Class, which was pretty easy to implement and my aplication comunicated very well.However, my program will monitor behavior of many users at the same time, so parsing and sending large xml files could overload Server. Thats why I used Socket class and AMF coding instead. After tough hours of implementing it, whole application seemed to work. Unfortunently, after couple of tests it apeard, that Socket was slower than XML Socket! I have no idea why, because in theory binary messages should be much faster than xml. Could you help me solving this issue? Below I pasted my code for both Java and AS3.
This code sends basic variables from class object and are received the same way (it can sound bit complicated compared to just sending whole object, but for various reasons is the only way).
1. Java client (java server receives data from different sources and sends it to flash):
2. Flash server - new data triggers socketDataHandler which receive it with readReasponse function. First int describes which kind of message was send, although there is only one at the moment. I've deleted some handlers couse they seemd irrelevant this case. Whole AS Class is attached as a file.
Code:
public class CustomSocket extends Socket {
private var currentMessage:int = -1;
private var message:Object = null;[code]................
I am not any kind of network programming pro, but it happened that I have faced necessity to develop socket-server on php (no way for using Java) for flash multiplayer browser-game (standard features like locations, team battles, etc).
The main problem is that TCP is point-to-point protocol and it completely occupies given port.Of course it is possible to create some kind of queue, which will manage connections to the socket, but this solution doesn't seems to be the fittest one.
It seems to me that using interval of "fair" ports (from 2000 to 2200, for example) is more fitting solution, because one request may take a lot of time to execute and players won't be happy to wait in queue.
But how can I implement this "port inteval" strategy?The solutions that I see are:
launcing php-script per every port (he-he, 2 hundreds of launched scripts!);somehow forking the initial process to new processes (2 hundreds of processed? Not nice too), one for every port;additional while-loop, which listens all the ports (looks very bad);using threading or something like that (the problem is that php is single-threaded, as far as I know; pcntl?).But somehow I don't like any of them, or at least don't know how to implement them in the best possible way.
What is the best existing strategy to handle multiple requests from multiple users per time unit without delays, and how to implement this strategy in php? We have our own Debian-server, so it is possible to use any required php extensions.
For example, if we are trying to develop chat application, we need some sort of fixed (I mean persistent) connections for each user. For example, we have 80 users in chat, and then one of them posted a message, which server tries to handle and send to all other connected users, also putting an entry to the history file or something like that.
In this situation polling server for new messages every 10 seconds from each of 80 users is craziness, so the need in persistent connection gets obvious.But I don't know what is the best way to implement something like this, considering that not all requests are handled instanlty.
I want to a framework to pass objects between Java and AS3 using sockets. It should be something with good performance (not XML, JSON). I have looked into AMF but all of the tutorials are very complex and not about what I need. I have used java to java serialization but I can't find any tutorial about Java to AS3.
I'm able to connect, able to send a message from HTML 5 to the AIR socket server and have the server see that there is an inbound message and even see that there are more or less bytes available based on the size of the message, but am unable to see the content of the message sent through. I'm just trying to send one-way text communication via sockets from HTML 5 to an AIR app. Why I can't see the actual content of the message? I'll attach my AS3/AIR (Flash Pro CS5) code and my HTML/JS code.
For example, Flash records voice and sends it to the server where Java or C# apps can proccess it and return back some data (or write it to db). How this communication possible, which protocols sould be used and etc.
We want to build the web-based softphone using SIP technology And we want to use the Asterisk as the Communication server and Java as primary technology in building the system so we have got following flash based softphone using Adobe Flash,FMG,FMS flex based softphone using Flex , Red5 Server we are also reseraching into MjSIP and PjSIP
How do i receive flash objects in java? I'm trying to create a multiplayer game, i've chosen sockets to handle this and Java as the server. So far i made myself a client/server already. And it works when sending as3 objects. but, not the way i want it! I made a class in AS3 and in Java that represents the object to be sent. AS3 Class 'Package'
Im trying to debug an app, not server related yet, with the new version of the FB, the one that comes with Zend in it. Thing is, everytime I try to debug, the message error is the same: "Unrecognized Windows Sockets error: 0: JVM_Bind"
I'm building a multiplayer card game using Flex on the client side and Java on the server side and I wanted to know if I must sockets and the accept method in order to connect users to the server for in order for them to join a game room or create one or to chat.In the past I've learned how to build a game server which both sides are JAVA and connection was in sockets but now days the client side will be in FLEX which has few ways to connect to a Java server (XML,SOAP,BLAZEDS(AMF)) and I find it hard to understand how to write the Java server in order to do all the features of a game server,especially managing the rooms and sending data back to the users.
In the sockets way, when a user was connecting to the server and he had opened a room, this room was opened on a thread and who ever was joined that room then he was connected to the same thread and sending the messages to the right place was easy, so the problem is understanding how to do the same using SOAP or BLAZEDS.
Is there any way a Adobe Flash Builder could call methods from a java class? Without any servers? just like a API where i could call use methods from java clasees?
I have a Flex AIR app, and i am trying to get data from a Java Server. Can some one tell me if this approach will work?
Start a ServerSocket in Java and wait for a connection. Use Flex to connect to the same port. Write some data to the socket from Java Server. Read the data at the Flex end and process it.
I think i am able to get this working, but the data that i read back at Flex end seems to be empty.
My current problem is socket.bytesAvailable becoming 0 and therefore obj is coming up as "". So how to read data sent from the server using a Socket in Flex?
We are using GraniteDS autogenerated AS code to map Java remote objects to AS.
We have objects that contain List sites in Java so when they are converted to AS it looks like:
JAVA: private List<MyObject> territories;
Actionscript: private var _territories:ListCollectionView;
The trouble is we are using MXML databinding to bind the contents of that list generically, the trouble is we never reference the type of object contained in the list explicitly so it's never compiled into our SWF is there any way to ensure that objects in a list for a RemoteClass is compiled in?
To clarify when I ask about browser to browser communication I mean without a server in between forwarding message. I would like to implement something like this for a game. If p2p in websockets isn't possible are there similar alternatives?
I have a client-server multigame suite for PC ("kind of" cross-platform using cygwin), which is developed in Java(game menus and database management), C++ (server side), and adobe Flash (game graphics & interaction).
I have never tried to develop for android, so i have no experience.I am thinking of migrating this suite to google TV. So i would like someone with android experience to give a clue on the following :
1) Is it going to be easy to migrate the Java application to an Android application?
2) What kind of Flash support does Android have? Can it load directly swf applications? Does it have to load swf's through browser?
3) Can i find any kind of performance indexes for google TV hardware?
I need to load somehow the html code of a webpage A into a javascript string of another webpage B, on a different host. I know this is impossible to do with javascript alone because of the same origin policy, and I know I could do it loading the page via php on my server and then send results back to the user's client but I wouldn't be able to handle so many requests, so I need it to be done directly by the user's browser. I can use nearly whatever browser scripting language/applet framework common enough to be installed on the majority of my users' computers, like flash and java.On example, what if I use flash or java to load the external html code and then call a javascript callback function providing the source? Could this work?
If one doesn't have the source code, the only to test is to send keystroke and mouse move so I found this product but it's not free and opensource price is not even known :([URL] Squish supports automating interactions and testing non-HTML/DOM elements, that is, native objects, which are embedded in a web page. This is done at a fairly abstract level, which means that mouse and text input can be recorded and replayed.
In addition it is possible to inspect embedded native objects with the Spy tool and to insert verifications for these native objects. All of a native object's public properties can be accessed in test scripts.
I was trying to write a stress tester for my own protocol when I stumbled up on this problem.Anytime I create more than 4 connections from one PC Flash denies to receive anymore messages from the server although I'm still able to connect, and write messages.
I have two (+) systems on a local network running an AIR application that need to send/receive updated positions and other events between each other. I'm currently using an AIR-based socket server one of the instances. The AMF and strong typing works great. What doesn't, however, is the syncing between clients.
In my example below, clientA is trying to send an AMF packet to clientB. The SOCKET_DATA events fire off as expected on the server, in sync with the mouse, however the data that clientB receives very quickly gets out of sync and events are lost.
It's fine if an occasional event gets dropped, however I need to know the most recent SOCKET_DATA event has the latest data. Instead, it just contains increasingly older data.
Code Snippets:
clientA writeObject: (on MOUSE_MOVE to test large number of events) protected function stage_mouseMoveHandler ( pEvent : MouseEvent ) : void {
it may be a stupid question what i'm going to ask, but i'll ask anyway ... just had an idea... is there a way i can comunicate through sockets in flash mx?
As the title says, I would like to know if Flash 8 or any version of flash can access sockets.For instance like winsock does. Using an IP and a port to send packets? I've seen it can connect to databases, but I haven't seen anything with it working with sockets, for instance a P2P chat using only an IP and a port to send an receive messages.
I'm working on a Flash project and someone recommended Red5 as a media streaming server. Do I need to know java to use build applications that use Red5 as their server?
i'm trying to develop a multiplayer game in AS3, but i don't know how to use the sockets, how to set up my server, actually i don't know how to start, i want to build a peer to peer game, which will have a "room" to find players, it will be a cars game, i already have all the rest of the game, i just need to be able to make it multiplayer
I read about a project that enables the developer to program a HTML5 web sockets application that is compatible with older browsers by automatically falling back to using a flash method.
doing a project where the deviceorientation-data from smartphones get transfered to a socketserver, and from there to a flash-application.Now creating a http-server with nodejs wasn't too hard, and connecting from a smartphone via browser and transfering the data with socket.io worked fine.The problem comes with flash, i couldn't manage to connect my flash application to the http-server running socket.io. I figured out when i run a node tcp-server connecting from flash is no problem, but i have no more session management and i can't connect from the browser anymore.
I have a program in c++ that sends a socket of 23723 bytes to a flash player in one "shot".The flash player sometimes receives two packets of size 17520 and 6203, and other times it receives a single packet of 23723.
EDIT: There does not seem to be a way to obtain the total number of bytes associated with the send data from flash. This would make it very difficult to build a loop to reconstruct the "broken" packet.I thought TCP was supposed to correctly recombine the packets and I am having difficulty recombining them myself.This is my receiving handler in flash:
var socket:Socket = new Socket(); socket.addEventListener(Event.CONNECT, socketConnectHandler); socket.addEventListener(ProgressEvent.SOCKET_DATA, socketDataReceivedHandler);[code]...
will at times print 23723, and at other times, will print 17520 quickly followed by 6203. The total size are just examples and are subject to change for each send sockets. Also many sockets can be sent or received at the same time, so the split packets can be inter-mixed. In c++ I could determine what the total size of the sent data was, even if I did not receive the whole sent data yet.
i'm having a strange, strange problem while passing text from xml to flash at my xml, where i'm using utf-8 encoding, i have this <pt><
