ActionScript 3.0 :: Binary Socket Communicates Once
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?
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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.
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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?
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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
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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.
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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.
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Jan 11, 2011
I am starting with a short introduction: I am currently working on a project, which involves a server application written in .NET (C#) and a flash gui app as client (standalone flash player 10 [code is written in Actionscript 3.0]). The server constantly sends bitmaps to the client (up to 30fps). The connection is established using binary sockets and data ist streamed to avoid socket open/close/reconnection problems.The bitmaps sent to the client are marked with begin- and end-tags. A length field was added as well, to optimise the following parsing process. The client buffers the received data up to the point where an end-tag is found. The client reassambles the bitmaps on the screen by parsing the current buffer. Parsing means looking for begin-tags and length fields and/or end-tags of pictures packages. The resulting bitmap data is copied into a byte array and will loaded into a movieclip using the flash.display.Loader class ( bytePictureLoader. loadBytes( byteArray ); ).[code]While testing, I found out that in some cases the data stream becomes currupted, i.e. data is lost and/or the transmittion is incomplete.
A good thing is that this error is reproducable.It seems that as soon as the Flash Application Window is dragged (moved on Windows Desktop) the stream lacks data. The same error occurs, if too much data is sent to the client. The results are performance problems, data loss and other strange effects. The more data is sent on the stream, the more data has to be parsed and the more data gets lost somehow. Sometimes this leads to a memory problem, because Begin- and End-Tags aren't transmitted correctly. In order to fix (counteract) that, I discard data as long as there is no Begin-tag found and the buffer is cleared when the size exceeds 1Mb.It works so far, but the application lacks performance and stability.I.e. If 20 bitmaps per second with 620x390px are sent to the client, the client only receives 16 to 17 bitmaps, if the application does nothing else.If 30 bitmaps per second with 620x390px are sent to the client, the client only receives about 20 to 21 bitmaps.I am guessing that using actuall video streams would be better, then sending one bitmap at a time in a byte stream.Is there a proper example on how to build a client app in flash to receive/parse a binary data stream?Does anyone else has recognized the lost-data problem or the interruption of streams?
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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();
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Feb 4, 2010
This code doesn't send the trailing null byte. How do I send the trailing null?
[Code]...
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Oct 10, 2009
I am working on the web base flash application I am trying to communicate with server through binary socket to the server through IP Address and Port using Action script 3.0 at the server side we are using java. I will like to send binary data string to the server in a clubbed single packet. I dont know the Action Script 3.0 as much.for this We will have to communicate through IP and Port only
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Nov 22, 2010
How would I change/specify the endpoint URL at runtime in a Flex App which communicates with PHP?I always used a services-config.xml so far.
I tried to overwrite the endpoint in the mxml Remote Object, with no success.
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Nov 19, 2011
When I send number (int)52 s.Send(BitConverter.GetBytes((int)872415232));, flash show me trace(socket.readInt()); 872415232 If i send 872415232, flash show 52.Why? And how it fix?
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Jun 29, 2011
I'm creating a client-server game. My client is a flex based game, and my server is erlang server. At the beginning, when I test directly my flex client in flash player, I can establish a connection easily to my erlang server through socket connection. And both can exchange data with no problem. The problem rise when I deploy my flex app at Apache http server, and running it using a browser by calling [URL] my flex socket sends message requesting for a crossdomain policy to my erlang server. So I create an xml message that represent a crossdomain policy, and send it back to my flex app as a response for that request.
Yet still I can't establish any permanent socket connection between my flex client and my erlang server. I know this because I add listener on my flex socket that will modify its internal state to CONNECTED, if a connection between client-server has established.
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Apr 30, 2010
Steve Jobs just posted this article on why Apple rejects Flash... [URL] I agree that javascript and css can be used to replicate some of Flash's animation, though Flash does all sorts of scaling and tweening that is incredibly powerful, and I'm not sure that there's anything comparable in javascript, if there is, I certainly haven't seen it.
However, my question is about the socket. Flash has an incredibly powerful openSocket class that allows you to connect to a server and have the server and the client talk back and forth to one another. As far as I know there is no equivalent class in Javascript. Am I mistaken? Is there some secret mystery Ajax class that replicates the openSocket? If not, then that feature alone makes Flash an invaluable tool.
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Mar 19, 2012
I would like to know if you can convert decimal to binary using actionscript 3.0?
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Aug 3, 2010
I have an array of objects. Each object has 3 integer fields and 2 binary fields.I've utf encoded the binary data and json encoded the array & sent it to Flex client side.On the client side, decoding data, I've got a String representing the binary data (utf decoded).Now, how can I convert this String to ByteArray? Or how can I read each byte of the String?
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Mar 14, 2011
I want to write a logging system to log errors but I want the format of the file to be binary. Can you write and/or read binary files in Flex 4? (actionscript to be more precise)
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Sep 12, 2011
I've been asked to implement and MD5 hasher ActionScript-3 and as I was in the middle of debugging how I formatted my input I came across a problem. When I try and output the ByteArray as a binary string using .toString(2), the toString(2) method will perform some short cuts that alter how the binary should look.
For Example
var bytes:ByteArray = new ByteArray();
bytes.endian = Endian.LITTLE_ENDIAN;
bytes.writeUTFBytes("a");
bytes.writeByte(0x0);
var t1:String = bytes[0].toString(2); // is 1100001 when it should be 01100001
var t2:String = bytes[1].toString(2); // is 0 when it should be 00000000
so I guess my question is, might there a way to output a binary String from a ByteArray that will always shows each byte as a 8 bit block?
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Jul 3, 2007
I wrote an image editor for my cms and wanted to send the image respectively the through the BitmapData's getPixels()-method received ByteArray to a PHP-script that displays and finally saves the image. Obviously I didn't succeed. How do I have to encode my binary data so that PHP is able to read it and how do I have to treat the bytes in PHP? I also tried encoding the image data with the corelib classes from [URL] but it didn't work as well.
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Oct 14, 2009
I will like to convert string into binary
here is the code
private function sendCommand(e:MouseEvent):void {
var ba:ByteArray = new ByteArray();
ba.writeMultiByte(command.text + "
[Code].....
I will like to convet command.text in to binary format and send it to server.
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Nov 26, 2010
First time using bitwise and i have the following problem:
Let's say i have 1110 in binary (binary=1110)
I want to convert it to Gray code. So basically i have to apply it a bitwise right shift and xor the result with the initial value.[code]...
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Jan 20, 2011
Actually, i having troublesome with the flash map.Actually i am doing the project which is multi-agent system (agents behave like human react in the map and have behavior just like human). i am one of the members of this project, i responsible for the mini map and i am using flash to do map.[code]...
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May 5, 2011
I have project Business card design, my app have feature save their design with PNG extension after customer design their business card to server. I sent binary of PNG to server by urlRequest and urlLoader. But with files have file size more than 5mb, it can't upload.
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Aug 29, 2004
how such effects as glenmurphy and yugop do those awesome text effects where the txt is written out in symbols and the changes to text?
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Mar 11, 2009
Some time ago I had to protect an swf but, since I never did it before, I had no fancy obfuscation tools and stuff like that. So what I did was this:
Code:
package
{
[code].....
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Apr 28, 2009
I am using pixelfumes reflect class to create a releflection, the problem i have is (i) It only accepts reference to a movieclip. (ii) I cannot cast my binary data as a movieClip var item:Bitmap has to stay as a bitmap so either I make a copy of it as a moveclip and reflect it or find a way to pass it directly into the new Reflect() constructor.
[Code].....
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Mar 17, 2010
I m trying to write AS3 to take a screenshot of a MC thats on the stage and pass the data to a .cfc method which saves it as a jpg on the server.The current code I have kind of works except the jpg is unreadable.I think it has something to do with not using Flex, AMF, and writing binary files.When I look at the jpg via a hex viewer I think it doesnt have the right jpg header.The jpg begins with:c3 bf c3 98 c3 bf c3 a0 00 10 4a 46. When I think it should begin with:ff d8 ff e0 00 10 4a 46
//AS3 source code[code].......
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Jan 18, 2010
We have a system that allows a user to upload any image, which we store on the server. Of course, it is simple to load an image (that you know the path to) using loadMovie, but I also want to load certain pieces of meta data about the image that is precalculated and stored on the server; we may one day want to retrieve things completely unrelated to the image as well, so consider the non-image data to be arbitrary.So, that said, is there a way to simply return the image as a variable (urlencoded and returned in a loadVars request, perhaps) and then load that data into a movie clip?
Bonus Lightning Round Question: Is there a way to check the output of a PHP script which processes uploads when the request is sent via FileReference.upload(url:String)? Should I load/escape the binary data and then send it using a loadVars() request if I want to see the output?
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Oct 19, 2011
I'm trying to load some binary data from server like this
var urlRequest:URLRequest = new URLRequest("http://localhost/test.php");
var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, completeHandler);
[code].....
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Oct 27, 2011
I'm trying to retrieve binary data using AS3 from a PHP server via HTTP, but very often (~50%) a few bytes arrive corrupted.
PHP snippets:
header('Content-Type:binary/octet-stream;');
echo $this->page;
[Code].....
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