Disadvantages of xmlsocket

// ================================================ =; //Flash client (taking flash text chat as an example ); // ================================================ =; VaR paramobj: Object = new object (); // Command Separator; Paramobj. commanddelimiters = "-@@##@@-"; // User list separator; Paramobj. peopledelimiters = "-@#@-"; // Create an xmlsocket object; VaR socket: xmlsocket = new xmlsocket (); // Connection status event; Socket. onconnect = function (SUCCESS ){ Trace ("socket. onconnect:" + success ); If (! Success ){ Trace ("the server connection failed. Check the network status! "); } }; // Close the event; Socket. onclose = function (){ Trace ("the server is closed! "); Logoutchat (); }; //Data communication events; Socket. ondata = function (SRC ){ // Trace ("socket. ondata:" + SRC ); Docommand (getcmdarraybymsg (TRIM (SRC ))); }; //User Logon; Function loginchat (): void { // Connect to the socket server; Socket. Connect ("localhost", "8888 "); Sendsocket ("info" + paramobj. commanddelimiters + MSG ); } //User logout; Function logoutchat (B: Boolean): void { Sendsocket ("quit "); } //Show chat Information; Function showchat (MSG: string): void { Trace ("chat information:" + MSG ); } //Send chat Information; Function sendchat (MSG: string): void { Sendsocket ("MSG" + paramobj. commanddelimiters + MSG + paramobj. commanddelimiters + MSG ); } //Send messages to the server; Function sendsocket (MSG: string): void { Socket. Send (MSG + "\ r "); } //Process the information returned by the server; Function getcmdarraybymsg (MSG: string): Array { If (msg. charcodeat (0) = 13 & msg. charcodeat (1) = 10 ){ MSG = msg. substr (2 ); } Return MSG. Split (paramobj. commanddelimiters ); } Function docommand (ARR: array): void { Switch (ARR [0]) { Case "MSG ": Showchat (ARR [1]); Break; Case "taken ": Trace ("your login name already exists. Please change to another login name! "); Break; Case "people ": Dopeople (ARR [1]); Break; } } //Show online user list; Function dopeople (MSG: string): void { VaR people_arr: array = MSG. Split (paramobj. leledelimiters ); Trace (lele_arr ); }

// The main Code related to xmlsocket is displayed. Just add the relevant components on your own!

// Note that "\ r" must be added at the end of the Command sent by flash to the server; otherwise, the server cannot receive the message (my server is developed in Java)

// ================================================ =; //Server code(I useJavaDeveloped by others); // Chatserver. Java // ================================================ =; Package com. klstudio. Socket. Chat; Import java. Io. ioexception; Import java.net. serversocket; Import java.net. Socket; Import java. util. vector; // Import com. klstudio. util. Logger; /** * @ Author kinglong * * To change the template of the type annotation generated by todo, go to window-preferences-Java-code style-code template. */ Public class chatserver { // Private logger; Private Static vector clients = new vector (); Private Static serversocket Server = NULL; Private Static Socket socket = NULL; Public static string commanddelimiters = "-@@##@@-"; Public static string peopledelimiters = "-@#@-"; Public chatserver (){ } Public static void policyroom (){ Stringbuffer people = new stringbuffer ("people" + commanddelimiters + "All people "); For (INT I = 0; I <clients. Size (); I ++ ){ Client client = (client) clients. elementat (I ); People. append (leledelimiters + client. getclientname ()); } Sendclients (people ); } Public staticboolean checkname (client newclient ){ For (INT I = 0; I <clients. Size (); I ++ ){ Client client = (client) clients. elementat (I ); If (client! = Newclient & client. getclientname (). Equals (newclient. getclientname ())){ Return false; } } Return true; } Public static void closeall (){ While (clients. Size ()> 0 ){ Client client = (client) clients. firstelement (); Try { Client. getclientsocket (). Close (); } Catch (ioexception e ){ // Todo automatically generates catch Blocks // Logger = new logger (system. Out ); // Logger. Log ("error-" + E. tostring ()); } Finally { Clients. removeelement (client ); } } } Public static synchronized void disconnect (Client client ){ Client. Send (New stringbuffer ("quit ")); Try { Client. getclientsocket (). Close (); } Catch (ioexception e ){ // Todo automatically generates catch Blocks // Logger = new logger (system. Out ); // Logger. Log ("error-" + E. tostring ()); } Finally { Clients. removeelement (client ); } } Public static synchronized void sendclients (stringbuffer SB ){ For (INT I = 0; I <clients. Size (); I ++ ){ Client client = (client) clients. elementat (I ); Client. Send (SB ); } } Public static synchronized void sendclients (stringbuffer Sb, string ownername, string toname ){ For (INT I = 0; I <clients. Size (); I ++ ){ Client client = (client) clients. elementat (I ); If (toname. Equals (client. getclientname () | toname. Equals ("All persons") | ownername. Equals (client. getclientname ())){ Client. Send (SB ); } } } Public static synchronized void sendclients (client ownerclient ){ For (INT I = 0; I <clients. Size (); I ++ ){ Client client = (client) clients. elementat (I ); If (client. getclientname (). Equals (ownerclient. getclientname ())){ Client. Send (New stringbuffer ("MSG" + commanddelimiters + "system information> welcome! ")); } Else { Client. Send (New stringbuffer ("MSG" + commanddelimiters + "system information> [" + ownerclient. getclientname () + "] the user enters! ")); } } } Public static void main (string [] ARGs ){ Int Port = 8888; If (ARGs. length> 0 ){ Port = integer. parseint (ARGs [0]); } // Logger = new logger (system. Out ); // Logger. Log ("info-chatserver [" + port + "] the service is starting ..."); Try { Server = new serversocket (port ); } Catch (ioexception e ){ // Todo automatically generates catch Blocks // Logger. Log ("error-" + E. tostring ()); } While (true ){ If (clients. Size () <5 ){ Try { Socket = server. Accept (); If (socket! = NULL ){ // Logger. Log ("information-" + socket. tostring () + "connection "); } } Catch (ioexception e ){ // Todo automatically generates catch Blocks // Logger. Log ("error-" + E. tostring ()); } Int I = 0; Do { Client client = new client (socket ); If (client. getclientname ()! = NULL ){ Clients. addelement (client ); If (checkname (client )){ // Logger. Log ("info-" + "currently [" + clients. Size () + "] connected users "); Sendclients (client ); Client. Start (); Policyroom (); } Else { Client. Send (New stringbuffer ("taken ")); Disconnect (client ); } I ++; } Break; } While (I <clients. Size ()); } Else { Try { Thread. Sleep (200 ); } Catch (interruptedexception e ){ // Todo automatically generates catch Blocks // Logger. Log ("error-" + E. tostring ()); } } } } }

 

// ================================================ =; //Client. Java // ================================================ =; /* * Creation date: 2005-10-10 * * To change the template of the generated file in todo, go * Window-preferences-Java-code style-Code Template */ Package com. klstudio. Socket. Chat; Import java. Io. bufferedreader; Import java. Io. ioexception; Import java. Io. inputstreamreader; Import java. Io. printstream; Import java.net. Socket; // Import com. klstudio. util. Logger; /** * @ Author kinglong * * To change the template of the type annotation generated by todo, go to window-preferences-Java-code style-code template. */ Public class Client extends thread { Private socket clientsocket; Private string clientname; Private string clientip; Private bufferedreader BR; Private printstream pS; // Private logger; Private chatserver server; Public client (Socket socket ){ // This. Logger = new logger (system. Out ); This. clientsocket = socket; Try { This.br = new bufferedreader (New inputstreamreader (socket. getinputstream (), "UTF-8 ")); This. PS = new printstream (socket. getoutputstream (), true, "UTF-8 "); String info = this.br. Readline (); If (info! = NULL ){ String [] info_arr = info. Split (chatserver. commanddelimiters ); If (info_arr.length> 1 ){ This. clientname = info_arr [1]; } This. clientip = socket. getremotesocketaddress (). tostring (); } Else { Socket. Close (); } } Catch (ioexception e ){ // Todo automatically generates catch Blocks // This. Logger. Log ("error-" + E. tostring ()); } } /** * @ Return returns the IP address. */ Public String getclientip (){ Return clientip; } /** * @ Return returns the name. */ Public String getclientname (){ Return clientname; } /** * @ Return returns socket. */ Public socket getclientsocket (){ Return clientsocket; } Public void send (stringbuffer MSG ){ This. PS. println (msg. tostring () + "\ 0 "); // This. PS. Flush (); } Public void run (){ While (true ){ String line = NULL; Try { Line = this.br. Readline (); } Catch (ioexception e ){ // Todo automatically generates catch Blocks // This. Logger. Log ("error-" + E. tostring ()); Chatserver. Disconnect (this ); Chatserver. notifyroom (); Return; } If (line = NULL ){ // This. Logger. Log ("information-[" + this. clientname + this. clientip + "] the user leaves! "); Chatserver. Disconnect (this ); Chatserver. notifyroom (); If (this. clientname! = NULL ){ Chatserver. sendclients (New stringbuffer ("MSG" + chatserver. commanddelimiters + "system information> [" + this. clientname + "] the user leaves! ")); } Return; } // This. Logger. Log ("info-" + line ); String [] Line _arr = line. Split (chatserver. commanddelimiters ); String keyword = pai_arr [0]; Keyword = keyword. substring (1 ); If (keyword. Equals ("MSG ")){ Stringbuffer MSG = new stringbuffer ("MSG" + chatserver. commanddelimiters ); MSG. append (this. clientname + "> "); MSG. append (pai_arr [1]); Chatserver. sendclients (MSG, this. clientname, pai_arr [2]); } Else if (keyword. Equals ("quit ")){ // This. Logger. Log ("information-[" + this. clientname + this. clientip + "] the user leaves! "); Chatserver. Disconnect (this ); Chatserver. notifyroom (); Chatserver. sendclients (New stringbuffer ("MSG" + chatserver. commanddelimiters + "system information> [" + this. clientname + "] the user leaves! ")); This. Stop (); Return; } } } }