Java :: Binary Socket And Policy File In Flex
May 17, 2010
I'm trying to evaluate whether Flex can access binary sockets. Seems that there's a class calles Socket (flex.net package). The requirement is that Flex will connect to a server serving binary data. It will then subscribe to data and receive the feed which it will interpret and display as a chart. I've never worked with Flex, my experience lies with Java, so everything is new to me. So I'm trying to quickly set something simple up. The Java server expects the following:
DataInputStream in = .....
byte cmd = in.readByte();
int size = in.readByte();
byte[] buf = new byte[size];
in.readFully(buf);
[Code] .....
After that - EOFException happens on the server and that's it. So the question is, am I approaching whole streaming data issue wrong when it comes to Flex? Am I sending the policy file wrong? Unfortunately, I can't seem to find a good solid example of how to do it. It seems to me that Flex can do binary Client-Server application, but I personally lack some basic knowledge when doing it. I'm using Flex 3.5 in IntelliJ IDEA IDE.
View 1 Replies
Similar Posts:
Jan 15, 2009
I am attempting to setup a binary socket connection between flash running on my desktop and a Rabbit RCM3800 Microcontroller providing the server on my home network, which has no file system and has a very basic http server on it. Due to limitations of the microC I cannot run Java/Perl/Python or any other server on it other than setting up a server using its own native Dynamic C language (essentially manually opening and controlling sockets in C). I am able to successfully connect to a socket on port 3333 of the server and transfer information between the server and the .swf file when it is the sandbox type "local-trusted" (while I'm debugging in Flash).
Because of this I'm fairly certain the code to setup the socket between the server and flash works fine. My problem occurs when I try to run the .swf file as "local-with-network" (such as running it after publishing on my desktop) or "remote" (accessing the .swf file when it is located on the server) and it then requires a socket policy server to host a socket policy file on the server. On my server I have code setup such that whenever a socket opens on port 843 or port 3333 (my data port) and sends a stream of raw data containing the request <policy-file-request/>, the server writes back in ASCII the below code and closes the socket.
Code:
Select all<?xml version="1.0"?>
<!DOCTYPE cross-domain-policy SYSTEM "[URL]">
<cross-domain-policy>
<site-control permitted-cross-domain-policies="all"/>
<allow-access-from domain="*" to-ports="*" />
</cross-domain-policy>
[Code] .....
So for some reason flash times out while waiting for the socket policy file. I have tested sending the <policy-request-file/> over telnet, and have received the above policy file. I have also sniffed using wireshark and saw that my desktop sent the policy request and received the policy file. I am guessing that Flash times out because it is waiting for some kind of terminating character that states the end of the policy file, and to that end I have tried sending. Interestingly, instead of sending the policy file I have tried sending random data from the server to flash, and flash displayed the Warning: Ignoring policy file at (URL) due to incorrect syntax. Because I don't receive this warning when I send my policy file I don't think it is formatted incorrectly.
I have also tried using the below flash code to hold the socket request open indefinitely, but it also errors after 20seconds.
Code: Select allSecurity.loadPolicyFile("xmlsocket://192.168.1.59:843");
The .swf file will eventually reside on the server itself at 192.168.1.59/myProg.html. I have only tested the flash file remotely on the server a couple times, and in addition to the previous warnings/errors, I received the warning: SWF from (URL) may not connect to a socket in its own domain without a policy file.
View 1 Replies
Dec 30, 2011
how to make a policy file for a socket server made on java with a client made on as2.
View 21 Replies
Sep 27, 2011
I have created a flex app that uses sockets. I published the flex app in a web application that runs on glassfish server. Now from that flex app i create a socket connection to a C# server and start sending/receiving data.The problem is that after i create the socket connection to C# server the flex app first checks the policy file, and after it get's it, it closes the socket, without keep the connection alive.[code] Now after i create the connection and it gets the policy from server it closes this socket, so to be able to use this connection i have to call again [code]After i do this, i can use normally the connection
View 1 Replies
Jul 16, 2009
Actionscript Socket Policy File Server Problems Has anyone been able to successfully implement a service to serve the required socket policy file to FlashPlayer?
[Code]...
View 1 Replies
Jan 22, 2010
I'm trying to get my Flash application to connect via socket to my server, so I need to set up a socket policy file server. It seems like there are various roll-your-own implementations floating around out there, but is there any kind of standard or best practice with what to use?
As an aside, it seems strange that Adobe imposes this restriction but doesn't make something readily available to support it.
View 2 Replies
Jan 6, 2011
I have 2 applications which I wrote in ActionScript 3.0 as client and C#.net as server. These are basic chat applications. Also I have a test website which is running under the same machine with chat server application.
Server application is listening 289 port, flash application connecting to server with domain and 289 port, it can talk with server during working on Flash. But when I put the flash in a html page, the socket connection is breaking after a while because of security reasons.
I know that is necessary to put a crossdomain.xml file on target website's root folder. The problem is here: Yes, there is a crossdomain.xml file like this:[URL]...
View 2 Replies
May 30, 2010
Basically I'm using Flash to connect to a Java server.Despite my Java application replying to the <policy-file-request/>, in the Flash debug log it lists (not sure about the order as there are lots):
Security Sandbox Violation *
Connection to 192.168.1.86:4049 halted
Warning: Timeout on
[code].....
View 1 Replies
Jul 16, 2009
Has anyone been able to successfully implement a service to serve the required socket policy file to FlashPlayer?I am running the Python implementation of the service provided by Adobe at
[URL]
and using the following policy file:
<?xml version="1.0" encoding="UTF-8"?>
<cross-domain-policy>
<site-control permitted-cross-domain-policies="master-only"/>
<allow-access-from domain="*" to-ports="*" secure="false"/>
</cross-domain-policy>
[code]....
View 6 Replies
Dec 8, 2009
Running my Flash app from localhost (in debug) I can connect/contact the socket server just fine. Note: It doesn't seem as though the server detects any 843 connection (e.g. the policy file port) this way. However, when I move the app to the server itself and run it from there (i.e. from the website), it will send the policy file, get a disconnect (as it should), and then try to execute the regular port stuff but doesn't read anything from Flash. It seems like my Flash app isn't writing to the port as it should, or something else is going wrong. I did also notice that Flash seems to be trying to send the policy-file-request twice.My process right now is like this:
1) Flash tries to connect to port 843. The server responds to its <policy-file-request/> with the policy file.
2) Flash reads it, disconnects from 843
3) Server gets graceful disconnect, then gets another connection on 843.
4) Just after that, the server gets a connection on 2188, but reads another <policy-file-request/>, so sends the policy file again.
5) At this point, Flash SHOULD simply write the string "Test" to the socket (that's in my connect handler). However, my server doesn't seem to read anything on the socket after the second <policy-file-request/>.[code]
View 1 Replies
Feb 19, 2009
This code doesn't send the trailing null byte. How do I send the trailing null?
Socket.writeUTFBytes('Hello World');
Socket.flush();
View 4 Replies
Feb 4, 2010
This code doesn't send the trailing null byte. How do I send the trailing null?
[Code]...
View 3 Replies
May 18, 2011
In what situations should i use Socket class or XMLSocket when trying to connect from Flex to a Java Server that is going to listen to a port?
View 1 Replies
May 18, 2011
I'm currently trying to communicate between java and flex by using sockets and AMF serialized objects.
On the java side I use Amf3Input and Amf3Output from BlazeDS (flex-messaging-common.jar and flex-messaging-core.jar).
The connection is correctly established, and if i try to send object from flex to java, i can easily read objects :
FLEX side :
protected function button2_clickHandler(event:MouseEvent):void
{
var tmp:FlexAck = new FlexAck;
tmp.id="123456789123456789123456789";
[Code]....
View 2 Replies
May 19, 2011
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 server code is :
socket = new ServerSocket(port);
client = socket.accept();
InetAddress address = client.getInetAddress();
[Code].....
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?
View 1 Replies
Dec 31, 2010
In my Flash app, I'm connecting to my server like this:
Security.loadPolicyFile("xmlsocket://example.com:12860");
socket = new Socket("example.com", 12869);
socket.writeByte(...);
socket.flush();
At port 12860 I'm running a socket policy server, which (according to this document) correctly serves up my policy like this:
[Code]...
I get no security warnings, which I used to get before the policy server was in place. Still, the connection to port 12869 doesn't work. It's made (I can see with Wireshark and on the server), but no data is sent by Flash. It might be worth knowing that the SWF itself is served from example.com as well.
View 1 Replies
Aug 20, 2010
I am writing a online game with flex and java server and I have a big problem. In normal case, my game run smoothly but some time the clients can't receive the command from server. I found that if server send message too fast or client is doing something when server send message, the game client can't detect for a new message so my game is freeze. I only tested with 4 clients and I don't know what happen when thousands clients online in the same time. So terrible :(. In the game client, I use one EventDispatcher class to dispatch any command from the server. Do you have any solution to warranty that client must receive any message from server when the connection is still alive or server must know if client received the message or not. I use flex 3 with Socket (binary) and Java QuickServer.
View 1 Replies
Apr 2, 2012
I'm trying to create an app that multiple users would log into a server hosted over the local network. When testing the app in Flash Builder it connects, but when I run it on my phone it does not. I'm using XMLSocket like so:
[Code]....
View 1 Replies
Apr 27, 2010
i got a problem with 'Security error',it happens when i try to connect my XMLSocket (Flex) with my Socket (Java)i have a domain:
alucardeck.mine.nu
i startup my apache tomcat 6.0 and in ROOT folder i have:
policyFile.xml and crossdomain.xml
(i had a doubt about what is the correct filename so i created both)both files contains:
<?xml version="1.0"?>
<!DOCTYPE cross-domain-policy SYSTEM "http://www.adobe.com/xml/dtds/cross-domain-policy.dtd">
<cross-domain-policy>
<allow-access-from domain="*" />
</cross-domain-policy>
well, yes, you can access using the default port 80, as it should be.(but probably my server will be down when u try to access it)so here is what i do: i run my Java server application.there i open 1 socket in port 19809.(i already tried with port 843 too) then, i run my Flex application: [URL]also i tried to run it in ROOT folder..the XMLSocket class is instanced like this:
xmlsock = new XMLSocket();
// add all listeners
Security.loadPolicyFile("http://alucardeck.mine.nu/crossdomain.xml");
// also tried "xmlsocket://alucardeck.m....
[code]....
i also notice when i start my Java Server application with 2 sockets listening ports: 843 and 19809, i notice Flex first try to connect to 843 and then 19809, and in both sockets i reply with that String from before.
View 1 Replies
Oct 9, 2009
So, this is a copy of another post I made, but I get a sneaking suspicion I put the post in the wrong forum:[URL]..The summary:
The Socket class in flash player sometimes, for some users (across all sorts of OS and Browsers) will not ask for the policy file from port 843 first, but instead will go straight to the port of the outgoing request, which in this case is our game server, who doesn't really understand the request.
In every case so far the user *is* using the latest version of flash too, so it's not an issue without outdated policy methods, which would have been my first guess.For most people it works just fine, but I posted a log in the thread for one of the non-working players. It's pretty mysterious, and I haven't found a fix yet... though I'm going to experiment with some work arounds.
View 5 Replies
Jan 5, 2009
I'm trying to talk to a fully RESTful api of my own creation. The api is up and running but flash does not support PUT and DELETE, and does not recieve http status codes properly, plus a whole load of other issues with flashes anaemic http support.
To get around this I am trying to use as3httpclientlib. A 3rd party as3 http library, that uses socket connections to access the whole http protocol properly. It's a great library, unfortunately because it uses sockets flash requires implementation of the socket policy file, even though the access is all via port 80, the standard http port.
[URL]
This has given me a real headache. I can't implement the port 843 policy server as the documentation suggests because it's out of my ability level i feel. Also when the client is running it may be behind a corporate firewall that doesn't allow 843 access, so serving the policy file via the standard port seems the way forward. This is where I am stuck.
The policy file documentation says this shouldn't matter as if you cant access 843 because of your firewall you'll be unable to access non standard ports anyway, but I am accessing standard ports, only via sockets instead of URLLoader.
In the root of my server I have placed the following policy file:
Code:
<?xml version="1.0"?>
<!DOCTYPE cross-domain-policy SYSTEM "/xml/dtds/cross-domain-policy.dtd">
<cross-domain-policy>
[code]....
View 2 Replies
Jan 15, 2009
I have created a socket server on port 6666 because port 843 is in use on my mac.So when flash player request "policy-file-request" I return to it the cross domain xml, but I keep getting the security error that "cannot load data from".[code]As you see I receive the cross domain from the socket server.But I don't understand why flash player doesn't accept that?xmlsocket.connect("localhost", "6666");Does anybody have any idea why it throws that error "cannot load data from" ?
View 0 Replies
Oct 21, 2008
I have a custom socket class designed to connect to a server and talk with it. At one point, the server uses hex data for speed, however Flash seems to not get ANY of this data. In fact, it doesn't get ANY of the data from that point to the next packet.
View 2 Replies
Nov 15, 2010
I'm using a binary socket to talk to a server and it works fine the first time I send data. Then I receive data from the server and send a response but it's never received... like the connection closed or something. I have an event handler on the socket close event, but it doesn't fire. I can trace to the socket sending data, but if I trap the data received event on the server, nothing is received.. like it's closed the socket. Is there something I need to reset or have I missed a key concept in binary sockets?
View 2 Replies
Oct 26, 2011
I'm sending through a socket from java to flex client some data and the flex side can't seem to handle it right. In the java i'm looping over 8 objects and for each object I create a long string 1:lsls:2:3:justexample then the java does writeToSocket("1:lsls:2:3:justexample") for every iteration of the loop. But in the client side, it seems that only 2 out of the 8 arrived. what can be the problem?
View 1 Replies
Feb 10, 2009
for a long time I could easily make socket connections from my swf files tom simples java servers on various ports (swfs embeded from activex, for example). I used the simple python server policy file provided at this article to open the needed tcp ports to my flash applications.
[Code]...
View 3 Replies
Nov 21, 2011
Last time I worked with flash sockets I knew that a policy file is required only if the swf file is embedded in a different domain from the one where the socket connection is about to be made. Did newer version of flash player changed this, so now they'll alk for a policy file no matter what?
View 1 Replies
Sep 19, 2011
is it possible to load a swf into another swf using a binary socket instead of the traditional AS3 Loader class? Would you share some code or pointers?
View 1 Replies
Dec 30, 2008
I'm trying to make a little ftp upload app - not a full FTP client, just something to enable image upload with decent performance. I basically took the approach Lee used in his POP3 socket tutorial. The problem I'm having is that I can connect to the FTP server and I can authenticate and log in but as soon as I try to enter passive mode for data transfer I get nothing- not even an error. From looking at the FTP RFCs, FTP requires two TCP connections - a command connection and a data connection - does this mean that I need to open a second socket for the data transfer? Another possible issue is the Flash Player security policy not allowing conection to ports under 1024 - I have not placed a policy file or policy server on the host running the FTP server but as I can successfully login, I appear to be able to connect to port 21 (standard FTP port) anyway. The code I'm using is:
Code: Select allvar s:Socket = new Socket("ftp.actechnology.co.uk",21);
var ftp_response:String;
s.addEventListener(ProgressEvent.SOCKET_DATA, receiveReply);
s.addEventListener(IOErrorEvent.IO_ERROR, showError);
[Code].....
why passive mode kills it or has successfully connected to a FTP server with the socket class
View 10 Replies
Jul 13, 2010
We are in the middle to evaluate the technology choice to re-design an operator console application. The operator console as a hosted contact center has the abilities to queue the inactive calls, and hold, answer, transfer the active calls.
The legacy operator console used Java Swing. We want to use the latest RIA technology (Flex/Silverlight) to retire the legacy one. But the question is Flex/Silverlight can implement the functions like hold, transfer the calls? Based on my experiences, Flex can listen Java socket to receive XML data? Does it work well to receive voice data?
View 2 Replies
