在Jsch Session中使用绑定地址 [英] Use a bind address with Jsch Session

问题描述

我正在尝试设置一个地址，以便当我离开服务器以保存文件时，我不会以服务器的主机名离开，而要以其他IP地址离开. linux的一面是所有安装程序.我可以运行以下ssh命令，一切都会按预期进行.

I am attempting to set an address so that when I leave my server to scp a file I am not leaving as the servers hostname I am leaving as a different ip. The linux side of things is all setup. I can run the following ssh command and everything works as expected.

ssh -b 1.1.1.1 testuser@sshhost

我的问题是我现在正在尝试使用JSch来结束文件的传输，但是我无法确定正确的会话设置.我正在使用公共私钥，并且这些私钥可以正常工作.以下是我目前的流程.

My issue is now I am attemtpting to use JSch to scp the files over, but I can't figure out the correct session setup. I am using public private keys and those works correctly. Below is my current process.

JSch jsch = new JSch();
Keypair keyPair = KeyPair.load(jsch, privateKey, publicKey);
boolean keyPairdecrpy = keyPair.decrypt(passphrase);
if(keyPairdecrpy)
{
    jsch.addIdentity(privateKey, passphrase);
}
Session session = jsch.getSession("user", "sshhost", 22);
Properties config new Properties();
config.put("StrickHostKeyChecking:, "no");
config.put("PreferredAuthentications", "publickey");
session.setConfig(config);
session.connect(timeout);

到目前为止，我已经尝试过了.

So the things I've tried so far.

1. 创建一个设置绑定地址的套接字工厂，然后运行

1. Creating a Socket Factory setting the bind address and then running

InetSocketAddress addr = new InetSicketAddress("1.1.1.1", 0);
Socket socket = new Socket(sshhost, 22);
socket.bind(addr);
session.setSocketFactory((SocketFactory) socket);

尝试将内置端口转发与会话类一起使用

Attempted to use the build in port forwarding with the Session Class

session.setPortForwardingL(0, "1.1.1.1", 22);

推荐答案

使用以下SocketFactory对我有用:

class MySocketFactory implements SocketFactory {

    @Override
    public Socket createSocket(String host, int port) throws IOException, UnknownHostException {
        Socket socket = new Socket();
        socket.bind(new InetSocketAddress("1.1.1.1", 0));
        socket.connect(new InetSocketAddress(host, port));

        return socket;
    }

    @Override
    public InputStream getInputStream(Socket socket) throws IOException {
        return socket.getInputStream();
    }

    @Override
    public OutputStream getOutputStream(Socket socket) throws IOException {
        return socket.getOutputStream();
    }

}

我在Linux机器上使用netstat -an对此进行了验证，并观察到连接的本地端已使用临时端口号绑定到1.1.1.1(我临时用此地址设置了一个接口).

I validated this using netstat -an on my Linux box and observed the local side of the connection was bound to 1.1.1.1 with an ephemeral port number (I temporarily set up an interface with this address).

我在致电session.connect()之前立即设置了工厂:

I set the factory immediately before calling session.connect():

SocketFactory sfactory = new MySocketFactory();
session.setSocketFactory(sfactory);

session.connect();

这篇关于在Jsch Session中使用绑定地址的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！