简单地拿php的socket写了个小daemo, 代码如下:

server端:

$address = "127.0.0.1";

$port = 20461;

//创建socket资源

$sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("socket_create() 失败的原因是:" . socket_strerror(socket_last_error()) . "/n");

//阻塞模式

socket_set_block($sock) or die("socket_set_block() 失败的原因是:" . socket_strerror(socket_last_error()) . "/n");

//绑定到socket端口

$result = socket_bind($sock, $address, $port) or die("socket_bind() 失败的原因是:" . socket_strerror(socket_last_error()) . "/n");

//监听端口

$result = socket_listen($sock) or die("socket_listen() 失败的原因是:" . socket_strerror(socket_last_error()) . "/n");

echo "OKnBinding the socket on $address:$port ... ";

echo "OKnNow ready to accept connections.nListening on the socket ... n";

do {

$msgsock = socket_accept($sock) or die("socket_accept() failed: reason: " . socket_strerror(socket_last_error()) . "/n");

echo "Read client data \n";

$buf = socket_read($msgsock, 8192, PHP_NORMAL_READ);

echo "Received msg: $buf \n";

//数据传送 向客户端写入返回结果

$msg = "welcome" . PHP_EOL;

socket_write($msgsock, $msg, strlen($msg)) or die("socket_write() failed: reason: " . socket_strerror(socket_last_error()) ."/n");

socket_close($msgsock);

} while (true);

socket_close($sock);

client端:

global $argv;

$host = "127.0.0.1";

$port = 20461;

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)or die("Could not create socketn"); // 创建一个Socket

$connection = socket_connect($socket, $host, $port) or die("Could not connet servern"); // 连接

socket_write($socket, $argv[1] . PHP_EOL) or die("Write failedn");

//$buff = socket_read($socket, 1024, PHP_NORMAL_READ);

while ($buff = socket_read($socket, 1024, PHP_NORMAL_READ)) {

echo("Response was:" . $buff . PHP_EOL);

}

socket_close($socket);

我把服务端启动之后,客户端发送数据会报错:

但是把客户端的socket_read改成PHP_BINARY_READ就可以了;