php使用socket感悟--tcp和udp
阿新 • • 發佈:2019-02-02
<?php /** * File name:client.php * 客戶端程式碼 * * @author guisu.huang * @since 2012-04-11 */ set_time_limit(0); $host = "127.0.0.1"; $port = 10010; $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)or die("Could not create socket\n"); // 建立一個Socket $connection = socket_connect($socket, $host, $port) or die("Could not connet server\n"); // 連線 socket_write($socket, "hello socket") or die("Write failed\n"); // 資料傳送 向伺服器傳送訊息 while ($buff = socket_read($socket, 1024, PHP_NORMAL_READ)) { echo("Response was:" . $buff . "\n"); } socket_close($socket); ?> <?php /** * File name server.php * 伺服器端程式碼 * * @author guisu.huang * @since 2012-04-11 * */ //確保在連線客戶端時不會超時 set_time_limit(0); //設定IP和埠號 $address = "127.0.0.1"; $port = 10010; //除錯的時候,可以多換埠來測試程式! /** * 建立一個SOCKET * AF_INET=是ipv4 如果用ipv6,則引數為 AF_INET6 * SOCK_STREAM為socket的tcp型別,如果是UDP則使用SOCK_DGRAM */ $sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("socket_create() 失敗的原因是:" . socket_strerror(socket_last_error()) . "/n"); //阻塞模式 socket_set_block($sock) or die("socket_set_block() 失敗的原因是:" . socket_strerror(socket_last_error()) . "/n"); //繫結到socket埠 $result = socket_bind($sock, $address, $port) or die("socket_bind() 失敗的原因是:" . socket_strerror(socket_last_error()) . "/n"); //開始監聽 $result = socket_listen($sock, 4) or die("socket_listen() 失敗的原因是:" . socket_strerror(socket_last_error()) . "/n"); echo "OK\nBinding the socket on $address:$port ... "; echo "OK\nNow ready to accept connections.\nListening on the socket ... \n"; do { // never stop the daemon //它接收連線請求並呼叫一個子連線Socket來處理客戶端和伺服器間的資訊 $msgsock = socket_accept($sock) or die("socket_accept() failed: reason: " . socket_strerror(socket_last_error()) . "/n"); //讀取客戶端資料 echo "Read client data \n"; //socket_read函式會一直讀取客戶端資料,直到遇見\n,\t或者\0字元.PHP指令碼把這寫字元看做是輸入的結束符. $buf = socket_read($msgsock, 8192); echo "Received msg: $buf \n"; //資料傳送 向客戶端寫入返回結果 $msg = "welcome \n"; socket_write($msgsock, $msg, strlen($msg)) or die("socket_write() failed: reason: " . socket_strerror(socket_last_error()) ."/n"); //一旦輸出被返回到客戶端,父/子socket都應通過socket_close($msgsock)函式來終止 socket_close($msgsock); } while (true); socket_close($sock); ?>