Technical FAQ
Technical Questions

1. Why can't I start the chat?
2. Why "connection failed"?
3. Can 123 flash chat run on shared hosting?
4. How to load 123flashchat.swf into the flash movie of our site?
5. What version of JDK is needed to run 123flashchat server?
6. Why does my flash keep loading?
7. Why doesn't my logo appear?
8. My server runs Freebsd, can I install 123 flash chat server on it?
9. Can I install 123 flash chat software without a server?
10. What's the bandwidth necessary for running 123 flash chat server software?
11. What plugin my users need?
12. Can I add banner ads into my chatroom to earn money from chat?
13. Why the chat displays incorrectly to some of my users?
14. Can 123 flash chat support thousands of connections?
15. How to use "add-room" server API?
16. In a/v module installation and configuration, "URI" is involved, what URI should I put there?
17. How to configure it to cross proxy?
18. How to configure FMS for Whiteboard
19. What if 123 flash chat server and 123 flash chat client are placed on different server machines?
20. How to configure Red5 for 123FlashChat?
21. How to configure Flash Media Server for 123FlashChat?
22. Video effects don't work after upgrade?
23. How to detect iPad, iPhone, iPod users?
24. How to resolve latency problem in video chat?
25. How to configure Wowza for 123 Flash Chat?
26. Chat Room Disconnection
27. Wrong Flash Client Version Error?
28. Error: A script in this movie is causing Flash Player to run slowly
29. Chat Error: over max session
30. How to remove the chat plugins on html chat?

Answers to Technical Questions

1. Why can't I start the chat?

You can find the answer by reading the error description in this way:
In Windows, run "console.bat", then you will get the error note.
In Linux, check error note in the terminal .
The possible reasons are: blocked by firewall, wrong configuration in server.xml, the port is taken, inadequate system resource, etc. The error screenshots can be provided on request.

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2. Why "connection failed"?

If you failed to connect to the chat room, please do the checking job as follows:

1. Please check whether you are connected to the chat room through a proxy server. If so, please refer to this page to configure your proxy server connection.

2. Please view the source code of your chat page and check whether the 123flashchat.swf file is followed by these two variables: init_host and init_port. If so, please open a DOS-window: Start->Run->cmd and run the following command: for example, if these parameters are init_host=1.1.1.1 and port=51128, then run telnet 1.1.1.1 51128. If the init_host and init_port are unreachable, it means that you're probably using the default settings. And please run telnet IP 51127, replace the IP with the IP or domain your registered, for example, if the domain is www.testchat.com, please run : telnet www.testchat.com 51127.(Note: please remove "http" from it.)

3. If it shows the port cannot be opened, please check whether the chat server is running! You can also use this command to view the running status of the 123flashchat process: ps -ef|grep fcserver.

4. Please check the firewall settings.

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3. Can 123 flash chat run on shared hosting?

It requires a dedicated server or unrestricted shell account to run Java application on the server, but most shared hostings don't allow running standalone server application, therefore we suggest VDS (virtual dedicated server)/VPS(virtual private server) host plan which is cheaper than the dedicated server to run 123 flash chat Java server.

Only FTP access is not enough to install 123flashchat on your server, you'll need Telnet or SSH root account to install it.

If that's not what you have, fortunately we offer affordable chat hosting service too. You can get a chat room easily and leave chat room installation and maintenance all to us.

Note:

Even if we host chat for you, the existing database of your web site can still be seamlessly integrated with the chat after uploading a dynamic web application like a PHP, ASP or JSP file to your web host by following our further instructions.

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4. How to load 123flashchat.swf into the flash movie of our site?

Use following action script code:

loader._lockroot = true;
loader.loadMovie("123flashchat.swf");

A sample can be downloaded here.

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5. What version of JDK is needed to run 123flashchat server?

Since our server adapted the great-performance java.net.nio package, you will need JDK5.0 to run the chat server. Please try to update your JRE version to improve the performance. Note: for Windows or Linux user, JDK is already included in the download package, so no need to install it manually again.

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6. Why does my flash keep loading?

A: Two major reasons:

1) The chat server hasn't been started yet.
2) Two parameters: init_host/ init_port were missing when web server and chat server are located on two separate servers.

Details

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7. Why doesn't my logo appear?

The chat logo can be replaced in the Admin Panel. Accepted formats: JPG (non-progressive mode), SWF, PNG, GIF (The first frame only), PNG and Gif should be under the same domain of the chat room. Suggested width and height: 240*55 pixels.

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8. My server runs Freebsd, can I install 123 flash chat server on it?

Since freebsd doesn't have official java support, freebsd is not very compatible with java.
123flashchat uses SUN jdk new nio, even with SUN jdk installed, even though you can install 123flashchat on your Freebsd, it can't be very stable. We've tried hard to resolve this problem but so far there isn't any satisfying solution.

We strongly recommend linux server.
because we've done a lot of high-load test on linux server, the performance of 123flashchat on linux is very superb.
If you don't have a proper server, you may consider our chat hosting service.
we offer affordable hosting price to license buyer.
http://www.123flashchat.com/host.html

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9. Can I install 123 flash chat software without a server?

Unfortunately you can't run chat server without a server, but you can consider our affordable chat server hosting plan.

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10. What's the bandwidth necessary for running 123 flash chat server software?

123flashchat uses much less bandwidth than ordinary chat softwares because it's based on TCP socket communication, instead of refresh technology.

For Video Chat
About the bandwidth necessary for the A/V chat.
It depends on how many webcams does each user open, and the number of concurrent users.
In default situations, one webcam uses 8KB/s bandwidth, it's 64kbps.
For example, in the chat room, there are always about 10 persons online, and each person open 3 webcams, then one month, the bandwidth is 64kbps*10*3*3600*24*30=497664000kbps=59.3G

For Text Chat
The bandwidth required by the chat server depends on the number of concurrent chatters and the frequency of chatting.

ex: for 20 people in one room and 1 message sent by one of the users every 10 second,
if the average size of messages is 100 bytes, then the server needs a bandwidth of (20 messages sent to users every 10 seconds)*100 bytes/10 s *8 = 1.6 k bps.
That means if you have about 20 people chat a lot in your chat room,
Bandwidth per day: 86400 x 1.6 k =135M
Bandwidth per month: 135 X30 =4.05G
You can see usually you don't have to worry about bandwidth with 123 Flash Chat.
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11. What plugin my users need?

Only flash player 6 or above is needed. Macromedia Flash Player is the most pervasive software platform in the world, used by over 1 million professionals and reaching 99% of Internet-enabled desktops worldwide as well as a wide range of devices. Details here>>

The user who doesn't have flash player will be notified by a popup message that he need flash player to chat and be directed to macromedia to free download it.

Now that 123 Flash Chat offers HTML client other than the main Flash client, users who don't want to install flash player can enjoy chatting too.

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12. Can I add banner ads into my chatroom to earn money from chat?

Yes, all the chat owners (including the free users) may add Google ads to your own chat room.

Furthermore, 123 Flash Chat license or hosting buyers can add banner ads to the chat room in the Admin Panel. Basic Settings-> Advertising Settings-> launch advertising, then add or remove banners. Details: http://www.123flashchat.com/howto_advertising_banner.html

Furthermore, text adverts in chat content will be ideal to broadcast scheduled text advertisement or site news, too.
Room Settings-> Choose a particular room-> Chat Bot-> Enable Chatbot.

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13. Why the chat displays incorrectly to some of my users?

123 Flash Chat requires Flash Player 9.0 or above, otherwise the chat will display incorrectly. Statistics shows 97.7% internet users have Flash Player 9.0 or above, but if one of your chat users still report blank page error, please ask them to download the latest Flash Player from Adobe (www.adobe.com).

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14. Can 123 Flash Chat support thousands of connections?

Yes, the power Java server of 123 Flash Chat has high load support of up to 5000 users per server. Details: 123 Flash Chat server performance tuning tutorial. Also, a load balancing edition is available for the high load websites.

Another feature is called "Database Connection Pool", when thousands concurrent users are online, by increasing pool size appropriately you can ensure the stability of connecting database and handle high load/ busy traffic.

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15. How to use server API?

Details.

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16. In a/v module installation and configuration, "URI" is involved, what URI should I put there?

A detailed on targetURI and video chat configuration is here.

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17. How to configure it to cross proxy?

The detailed tutorial here.

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18. How to configure FMS for Whiteboard

For versions below FMS 4:
1. Navigate to 123flashchat's folder in a folder named applications under FMS install directory (such as "applications\123flashchat")
2. Open a blank file, write one line of code:"load( "components.asc" );", and save it as "main.asc" in this folder.

For FMS 4 and later versions:
1. Navigate to 123flashchat's folder in a folder named applications under FMS install directory (such as "applications\123flashchat")
2. Open a blank file, write one line of code:"load( "components.asc" );", and save it as "main.asc" in this folder.
3. Download the file scriptlib, decompress it and copy it to your FMS installed folder.

Note: after configuring the asc file, please be sure not to add files with far file extension in this folder, if there is such a file, the system may ignore the asc file that we configured when server is running.

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19. What if 123 flash chat server and 123 flash chat client are placed on different server machines?

Please check the section of "IP configuration" of this page for tutorial: http://www.123flashchat.com/howto_configure_connection.html

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20. How to configure Red5 for 123FlashChat?

http://www.123flashchat.com/flash-video-chat-red5.html

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21. How to configure Flash Media Server for 123FlashChat?

http://www.123flashchat.com/video-flashcom.html

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22. Video effects don't work after upgrade?

http://www.123flashchat.com/video-effects-fix

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23. How to detect iPad, iPhone, iPod users?

The sample code

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24. How to resolve latency problem in video chat?

In video chat, if the audio or video has latency problem, mostly it's due to the poor connection speed of the two parties (video publisher and viewer). This physical obstacle can't be overcome but the connection will become smoother with proper server tuning.
>> Details.

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25. How to configure Wowza for 123 Flash Chat?

This quick tutorial explains how to launch the whiteboard and video chat functions in 123FlashChat with Wowza media server 2
>> Details.

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26. Chat Room Disconnection

The reason why you experience this error?

  • Misconfigured proxy cause the chat disconnecting.
  • Misconfigured parameters init_host and init_port.
  • Firewall stops 123flashchat process.

>> Details.

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27. Wrong Flash Client Version Error?

Reason:
In this situation, your have a higher client version or a lower server version. For example, you install 123flashcha v9.0, but you have started 123flashchat v8.2. When you access to the client panel of 123flashchat v9.0, it will auto-connect to 123flashchat v8.2 server, and this error would occur.
>> Details.

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28. Error: A script in this movie is causing Flash Player to run slowly

Reason:
There are loop codes in swf files.
>> Details.

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29. Chat Error: over max session

Reason:
The settings of max connection size or max connection per IP are too small.
>> Details.

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30. How to remove the chat plugins on html chat?

>> Details.

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