PHP Socket Server Setup and test instance sharing

1.socket Server Building Ideas

1) Purpose: Understanding the socket server working mechanism

2) Train of thought: Create socket--connect the socket join pool--processing receive information, handshake action, send information

2.socket Server Code

Note: Copy to php file, direct command line can run, no additional support required

Special note: In order to be able to transfer the Chinese _sendmsg did Json_encode ()

<?php/** * Socket Server * @author Wuchangliang 2018/1/17 */class socketserver{private $sockets;//Connection Pool private $mast    Er    Private $handshake; /** * @param $address * @param $port */Public Function run ($address, $port) {//config error level, run time, refresh Buffer echo iconv (' UTF-8 ', ' GBK ', "Welcome to PHP Socket Test service.          \ n ");          error_reporting (0);          Set_time_limit (0);           Ob_implicit_flush ();           Create socket $this->master = $this->_connect ($address, $port);            $this->sockets[] = $this->master;                Run socket while (true) {$sockets = $this->sockets;            $write = NULL;                 $except = NULL;      Socket_select ($sockets, $write, $except, NULL);  $write, $except reference foreach ($sockets as $socket) {if ($socket = = $this->master)                           {$client = socket_accept ($socket); $thishandshake = false;                if ($client) {$this->sockets[] = $client;//join Connection Pool} } else {//receive information $bytes = @socket_recv ($socket, $buffer, 2048,                              0);                                        if ($bytes <= 6) {$this->_disconnect ($socket);                                      Continue                                       };                                                   Processing information if (! $this->handshake) {                                               $this->_handshake ($socket, $buffer);                                   } else {$buffer = $this->_decode ($buffer);                           $this->_sendmsg ($buffer, $socket);        }                }            }}}/** * Create socket connection * @param $address * @param $port * @return Resource */  Private Function _connect ($address, $port) {//create socket $master = Socket_create (Af_inet, Sock_stream, sol_tcp) or Die ("Socket_create () Failed:reason:". Socket_strerror (Socket_last_error ()).         "\ n");  Socket_bind ($master, $address, $port) or Die ("Socket_bind () Failed:reason:". Socket_strerror (Socket_last_error ($master)).        "\ n"); Socket_listen ($master, 5) or Die ("Socket_listen () Failed:reason:". Socket_strerror (Socket_last_error ($master)).         "\ n");    return $master;    /** * Handshake Action * @param $socket * @param $buffer */Private Function _handshake ($socket, $buffer)          {//handshake action Information $buf = substr ($buffer, Strpos ($buffer, ' Sec-websocket-key: ') + 18);           $key = Trim (substr ($buf, 0, Strpos ($buf, "\ r \ n"))); $new _key = Base64_encode (SHA1 ($key .           "258eafa5-e914-47da-95ca-c5ab0dc85b11", true));           $new _message = "http/1.1 101 switching protocols\r\n";        $new _message. = "upgrade:websocket\r\n";            $new _message. = "sec-websocket-version:13\r\n";        $new _message. = "connection:upgrade\r\n"; $new _message. = "Sec-websocket-accept:". $new _key.        "\r\n\r\n";        Record handshake Action Socket_write ($socket, $new _message, strlen ($new _message));    $this->handshake = true; /** * Disconnect the socket * @param $socket */Private Function _disconnect ($socket) {$index = Array_        Search ($socket, $this->sockets);        Socket_close ($socket);        if ($index >= 0) {array_splice ($this->sockets, $index, 1);        }}/** * Send message * @param $buffer * @param $client */Private Function _sendmsg ($buffer, $client)        {$send _buffer = $this->_frame (Json_encode ($buffer));           foreach ($this->sockets as $socket) { if ($socket! = $this->master && $socket! = $client) {//broadcast send (except yourself) socket_write ($socket, $send _                Buffer, strlen ($send _buffer)); }}}/** * Parse data frame * @param $buffer * @return null|string */Private Function _decode ($            Buffer) {$len = $masks = $data = $decoded = null;        $len = Ord ($buffer [1]) & 127;                if ($len = = = 126) {$masks = substr ($buffer, 4, 4);        $data = substr ($buffer, 8);                } else if ($len = = = 127) {$masks = substr ($buffer, 10, 4);        $data = substr ($buffer, 14);            } else {$masks = substr ($buffer, 2, 4);        $data = substr ($buffer, 6); } for ($index = 0; $index < strlen ($data); $index + +) {$decoded. = $data [$index] ^ $masks [$index        % 4];    } return $decoded; }/** * handles the return frame * @param $buffer * @return String */Private Function _frame($buffer)        {$len = strlen ($buffer);        if ($len <=) {return "\x81". Chr ($len). $buffer;        } else if ($len <= 65535) {return "\x81". Chr (126). Pack ("n", $len). $buffer;        } else {return "\x81". Char (127). Pack ("Xxxxn", $len). $buffer; }}} $SC = new Socketserver (); $sc->run (' 127.0.0.1 ', 2046);

3. Client code

Note: Copy directly to HTML, and the above PHP file in the same folder, pay special attention to onmessage parsing of the two layers of parse

<!    DOCTYPE html>
4. Test examples