FTP with proxy using camel in java

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JavaSE

Hi All, My requirement is to connect a FTP server using camel. i have coded using camel and the ftp also working fine for internal ftp sites (ie., withing organisation) but the problem is for External FTP via proxy it is not connecting , please suggest How to code for connecting External FTP via Proxy using camel

What I have tried:

JndiContext jndiContext = new JndiContext();
                
FTPClient ftpClient = new FTPClient();


InetSocketAddress proxyAddress = new InetSocketAddress ( "xxx.xx" , yyyy);
Proxy proxy = new Proxy( Proxy.Type.HTTP , proxyAddress ); 
//ftpClient.setProxy(proxy);

this.setFtpClient(ftpClient);
// Will be used in ftp component

// FTPClient ftpClient = new FTPClient();
ftpClient.setProxy(proxy);
jndiContext.bind("ftpClient", this.ftpClient);
setCamelContext(new DefaultCamelContext(jndiContext));

ftp://{username}@{host}{path}?password=****&maximumReconnectAttempts=5&reconnectDelay=5000&binary=true&passiveMode=true&delete=true&include=XXX.*\.CSV&ftpClient=#ftpClient

Getting the below ERROR :-

Caused by: java.lang.InternalError: Should not reach here
      at java.net.HttpConnectSocketImpl.doTunneling(HttpConnectSocketImpl.java:181)
      at java.net.HttpConnectSocketImpl.doTunnel(HttpConnectSocketImpl.java:168)