Proxy Server in File Transfer System

Question

Hi, I need to write out a file transfer system through a proxy server for my project
All the while i was writing a file transfer system directly from client to server without any security issue
Anyway, the scope is given as below, and i know it needs the JSSE package to come out a SSLSocket and SSLServerSocket.
The question is...
1. can i use NIO with JSSE included?
2. how to come out a java proxy server? is there any tutorial i can read through?
The scope is given as below
1) Proxy server
* perform tunning and keep the linking between file transfer host and client
* authenticate the file transfer client using CA certificate to establish SSL connection
* Once authorised, need to establish another SSL connection to host engine
2) File Transfer Manager at Client
* To initiate SSL connection to proxy server
* To open two type of connection: command and file connection
* The command connection is always keep alive
* For the file connection, the system required to re-open another connection after send file to host
* Auto-reconnect to server when the connection is down
* Re-handshake the SSL connection when the channel is inactive for sometime
3) File Transfer Manager at host
* To authenticate the proxy server and authorise the client before establish the connection
* Manage the connection
* request to client to open new connection (by sending command) when there is no file connection available to send file to client
* Request for re-handshake the SSL connection when the channel is inactive for sometime

Answer 1

Hi,
It is a new feature of SMB3 named SMB MultiChannel, which helps copy files through multiple NICs. 
Detailed information please see:
http://blogs.technet.com/b/josebda/archive/2012/05/13/the-basics-of-smb-multichannel-a-feature-of-windows-server-2012-and-smb-3-0.aspx
As mentioned you can disable or enable it with following steps:
2.2. Disabling
SMB Multichannel is enabled by default and there is typically no need to disable it. 
However, if you want to disable SMB Multichannel (for testing purposes, for instance), you can use the following PowerShell cmdlets:
On the SMB server side:
Set-SmbServerConfiguration -EnableMultiChannel $false
On the SMB client side:
Set-SmbClientConfiguration -EnableMultiChannel $false
Note: Disabling the feature on either the client or the server prevent the systems from using it.
2.3. Re-enabling
You can re-enable SMB Multichannel after you disabled it by using:
On the SMB server side:
Set-SmbServerConfiguration -EnableMultiChannel $true
On the SMB client side:
Set-SmbClientConfiguration -EnableMultiChannel $true
Note: You need to enable the feature on both the client or the server to start using it again.
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