The idea behind this standard is that everyone's chat room should end up being compatible. That is, every client should work with every server. The protocol is stateless, and clients are not expected to be able to show messages that were sent before they connected to the server.
The idea behind this standard is that everyone's chat room should end up being compatible. That is, every client should work with every server. The protocol is stateless, and clients are not expected to be able easy chat room show messages that were sent before they connected to the server. The server will discard messages once they are sent, and there is no way to get them back.
The client and server don't exchange any information other than these chat messages. That is, the client doesn't need to send any requests to the server, and the server will send no acknowledgment.
You can tell when the connection has failed because you'll get an IOException or something like that the next time you try to read or write a message. Easy chat room client needs to watch for this in case the server goes down, and the server needs to watch for this because clients are allowed to disconnect at any time.
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You are free to use or easy chat room it, or not to use it at all. Please include it with your final submission if you use it. The sample solution and the GUI source code can be downloaded here. To test the chat code, type java ThreadedServer on one host and java SClient Nickname servername on another. Both eash may be the same, in which case you should use localhost for the hostname, or just leave it blank.
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The monitor client Write a monitor client. It should contact a chat server and display all messages that come from it.
It shouldn't send any messages, just monitor the ones that get sent. This program is useful for debugging and should be easy to write.
The server Write a chat room server that uses the ServerSocket and Socket classes in package java. When it receives a message from a client, it should send a copy of it to all its clients including the one it came from. Clients should be able to connect to and disconnect from the server at will.
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When a client rolm, the server should broadcast a message from "server" stating that someone has logged in, and give their host and IP address. There is no way to give their name at this point. That comes in a later asment on authentication. The GUI client Write a fully functional client with a graphical user interface something like the screen shot above.
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There should be at minimum a text field that shows all the messages that have been broadcast so far including who sent them and the text and a text field where you can type a message and send it. You should be able to specify a name that will be sent with your messages, either with a command line option, a system property, a configuration file, or with a dialog box that pops chattanooga personals tgirls. You should display this name somewhere on the screen.
Note that the client really needs to be multi-threaded, but Java happens to do most of the work for you.
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One thread waits for messages to come down the network connection, while the other thread handles window events, key strokes, and sending messages. In Java, the AWT stuff automatically runs in its own thread, so you can use the main thread to do all your reading. Other Requirements The host and cnat where the clients look for the server should not be hard coded.
It's okay to put in a default value, but it should be possible to change the server host and port either with a command line option, a system property, a dialog box, a configuration file, something like that. The clients and server must be able to run on any machine and any port. The server could be multi-threaded: The main thread goes into an infinite loop where it accepts client connections from a ServerSocket.
When it detects a new client, it should do the following: Get the connected Socket from the ServerSocket, and get the associated input and output streams. Store a reference to rom output stream somehow. When it needs to deliver a message, the server will write to this output stream.
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Start a new thread that waits for the client to send messages to the server. Most real servers of various kinds are written this way. The monitor client and GUI client ought to have some code in common. Be lazy, save yourself some work: Do it right once, and you won't have to do it again.
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Test your programs on multiple hosts. Move the server around. Try everything eassy Solaris and Windows and mixtures of the two if you can. Test your clients and server against someone else's. They ought to be compatible if you've implemented the protocol properly.
If you're feeling creative and have everything else finished, the GUI can be extended in escorts redmond asian of ways. One little thing I like is to make it so that the message list scrolls to the bottom whenever a message chst. Other possible features: allow it to send multi-line messages, allow you to change your easy chat room name, and if you're using Swing have it display text with HTML markup.