# 作为ws/wss客户端

有时候需要让workerman作为客户端以ws/wss协议去连接某个服务端，并与之交互。

以下是示例。

1、workerman作为ws客户端

```php

use Workerman\Worker;

use Workerman\Connection\AsyncTcpConnection;

require_once __DIR__ . '/../Workerman/Autoloader.php';

$worker = new Worker();

$worker->onWorkerStart = function($worker){

$con = new AsyncTcpConnection('ws://echo.websocket.org:80');

$con->onConnect = function($con) {

$con->send('hello');

};

$con->onMessage = function($con, $data) {

echo $data;

};

$con->connect();

};

Worker::runAll();

```

2、workerman作为wss(ws+ssl)客户端

```php

use Workerman\Worker;

use Workerman\Connection\AsyncTcpConnection;

require_once __DIR__ . '/../Workerman/Autoloader.php';

$worker = new Worker();

$worker->onWorkerStart = function($worker){

// ssl需要访问443端口

$con = new AsyncTcpConnection('ws://echo.websocket.org:443');

// 设置以ssl加密方式访问，使之成为wss

$con->transport = 'ssl';

$con->onConnect = function($con) {

$con->send('hello');

};

$con->onMessage = function($con, $data) {

echo $data;

};

$con->connect();

};

Worker::runAll();

```

3、workerman作为wss(ws+ssl)客户端(需要本地ssl证书)

```php

use Workerman\Worker;

use Workerman\Connection\AsyncTcpConnection;

require_once __DIR__ . '/../Workerman/Autoloader.php';

$worker = new Worker();

$worker->onWorkerStart = function($worker){

// 设置访问对方主机的本地ip及端口以及ssl证书

$context_option = array(

// ssl选项，参考http://php.net/manual/zh/context.ssl.php

'ssl' => array(

// 本地证书路径。 必须是 PEM 格式，并且包含本地的证书及私钥。

'local_cert' => '/your/path/to/pemfile',

// local_cert 文件的密码。

'passphrase' => 'your_pem_passphrase',

// 是否允许自签名证书。

'allow_self_signed' => true,

// 是否需要验证 SSL 证书。

'verify_peer' => false

)

);

// ssl需要访问443端口

$con = new AsyncTcpConnection('ws://echo.websocket.org:443', $context_option);

// 设置以ssl加密方式访问，使之成为wss

$con->transport = 'ssl';

$con->onConnect = function($con) {

$con->send('hello');

};

$con->onMessage = function($con, $data) {

echo $data;

};

$con->connect();

};

Worker::runAll();

```