src/main/java/com/alipay/remoting/rpc/RpcClient.java
public Connection createStandaloneConnection(String addr, int connectTimeout)
                                                                                 throws RemotingException {
        return this.connectionManager.create(addr, connectTimeout);
    }
public Connection createStandaloneConnection(String addr, int connectTimeout)
                                                                                 throws RemotingException {
        return this.connectionManager.create(addr, connectTimeout);
    }
public Connection createStandaloneConnection ( String addr , int connectTimeout ) throws RemotingException { return this . connectionManager . create ( addr , connectTimeout ) ; }
Create a stand alone connection using address, address format example - 127.0.0.1:12200 <br>
<p>
Notice:<br>
<ol>
<li>Each time you can this method, will create a new connection.
<li>Bolt will not control this connection.
<li>You should use {@link #closeStandaloneConnection} to close it.
</ol>

@param addr
@param connectTimeout
@return
@throws RemotingException
Create a stand alone connection using address address format example - 127 . 0 . 0 . 1 : 12200 <br > <p > Notice : <br > <ol > <li > Each time you can this method will create a new connection . <li > Bolt will not control this connection . <li > You should use { @link #closeStandaloneConnection } to close it . < / ol >