Use swoole and websocket to develop simple chat rooms and swoolewebsocket

Use swoole and websocket to develop simple chat rooms and swoolewebsocket

First, I want to talk about some habits of writing code. First, any configurable parameters or variables must be written into a config file. Second, the Code must have a log record and complete error reporting and record the error. To put it bluntly, swoole should be something that every phper needs to understand. It claims to have redefined php. This chat room uses the features of swoole high concurrency and asynchronous non-blocking to improve program performance.

First, define a swoole_lock and swoole_websocket_server, and configure the parameters. For details about the parameters, go to the swoole official website.

Public function start ()
{$ This-> lock = new swoole_lock (SWOOLE_MUTEX); // lock files or arrays, synchronization has reached $ this-> server = new swoole_websocket_server ($ this-> addr, $ this-> port ); // Websocket Server $ this-> server-> set (array ('daemonize '=> 0, 'worker _ num' => 4, 'Task _ worker_num '=> 10, 'max _ request' => 1000, 'Log _ file' => ROOT_PATH. 'Storage \ logs \ swoole. log' // swoole log Path, which must be an absolute path); $ this-> server-> on ('open', array ($ this, 'onopen ')); $ this-> server-> on ('message', array ($ this, 'onmessage'); $ this-> server-> on ('task ', array ($ this, 'ontask'); $ this-> server-> on ('finish ', array ($ this, 'onfinish ')); $ this-> server-> on ('close', array ($ this, 'onclose '));
// Start the service $ this-> server-> start ();}

When there is a client link, the client information is simply recorded.

        public function onOpen($server, $request)        {            $message = array(                'remote_addr' => $request->server['remote_addr'],                'request_time' => date('Y-m-d H:i:s', $request->server['request_time'])            );            write_log($message);        }

When a client sends information, it processes the information.

Public function onMessage ($ server, $ frame) {$ data = json_decode ($ frame-> data); switch ($ data-> type) {case 'init ': case 'init': $ this-> users [$ frame-> fd] = $ data-> message; // record the information of each link. Do not print it out, because you can only see your own link information $ message = 'Welcome '. $ data-> message. 'added to the chatroom'; $ response = array ('type' => 1, // 1 indicates the system message, 2 indicates the user's chat 'message' => $ message); break; case 'chat': $ message = $ data-> message; $ response = array ('type' => 2, // 1 indicates the system message, 2 stands for user chat 'username' =>$ this-> users [$ frame-> fd], 'message' =>$ message); break; default: return false ;}
// Submit the information to the task for processing $ this-> server-> task ($ response);} public function onTask ($ server, $ task_id, $ from_id, $ message ){
// Iterate all client links to push messages. (If you try to print out $ this-> server-> connections, you will find it empty. But it was useful when we used foreach to go through the loop .) Foreach ($ this-> server-> connections as $ fd) {$ this-> server-> push ($ fd, json_encode ($ message ));} $ server-> finish ('task '. $ task_id. 'finished '. PHP_EOL );}

Finally, when the client is disconnected, the lock mechanism is used to synchronously Delete client information and record logs.

Public function onClose ($ server, $ fd) {$ username = $ this-> users [$ fd]; // release the client, use the lock to synchronize $ this-> lock (); unset ($ this-> users [$ fd]); $ this-> lock-> unlock (); if ($ username) {$ response = array ('type' => 1, // 1 indicates the system message, 2 indicates the user chats with 'message' => $ username. 'left the chatroom'); $ this-> server-> task ($ response);} write_log ($ fd. 'disconnected ');}

The server is finished. The following is the client. It is very simple. You only need to use the websocket link!

// Websocket let address = 'ws: // <? Php echo CLIENT_CONNECT_ADDR. ':'. CLIENT_CONNECT_PORT?> '; Let webSocket = new WebSocket (address); webSocket. onerror = function (event) {alert ('server connection error, please try again later ') ;}; webSocket. onopen = function (event) {if (! SessionStorage. getItem ('username') {setName ();} else {username = sessionStorage. getItem ('username') webSocket. send (JSON. stringify ({'message': username, 'type': 'init'}) ;}}; webSocket. onmessage = function (event) {console. log (event); let data = JSON. parse (event. data); if (data. type = 1) {$ (# chat-list2 '). append ('<li class = "ui-border-tb"> <span class = "username"> system message: </span> <span class = "message"> '+ data. message + '</span> </li>');} else if (data. type = 2) {$ (# chat-list2 '). append ('<li class = "ui-border-tb"> <span class = "username">' + data. username + ': </span> <span class = "message">' + data. message + '</span> </li>') ;}}; webSocket. onclose = function (event) {alert ('scatter, all servers are turned off ');};

For detailed code, go to my github to download