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Is a StreamSocket client compatible to openssl-enabled server?

    Question

  • Hi,

    I'm wondering if a client using StreamSocket class could connect to a server running openssl via TCP? Does a call of ConnectAsyc() take care of ssl stuffs like handshake etc.? I have no experience on StreamSocket, but I assume it follows the standard SSL protocol. Could anybody confirm my assumption? Also about DatagramSocket, I assume it's fully compatible to BSD UDP socket or winsock, i.e., a client using DatagramSocket could talk to a server running BSD socket or winsock.  Am I right?

    Thanks!

    Friday, September 14, 2012 11:40 AM

Answers

  • Hi ofox.cn,

    I used ssl connection of StreamSocket to connect MS lync server and it able to initiate for SSL/TLS connection request.

    There is no option in case of DatagramSocket for enabling SSL/TLS connection. SSL/TLS connection only used in TCP communication.

    Wednesday, September 19, 2012 1:59 PM

All replies

  • Hi,

    I think this thread can help you.
    http://social.msdn.microsoft.com/Forums/en-US/winappswithnativecode/thread/2662cac1-fbb6-4ac4-8553-06375d798720

    To get SSL/TLS connection you can use SocketProtectionLevel enum class under streamsocket->connectAsync() instead of Openssl. This give you almost similar cryptographic encryption of Openssl.

    Best regards,
    Jesse


    Jesse Jiang [MSFT]
    MSDN Community Support | Feedback to us

    Monday, September 17, 2012 6:39 AM
  • Thanks, Jesse!

    Yes, I knew the level enum per my search previously, that's why I was mentioning class StreamSocket and method connectAsync() in my original post. 

    Actually my question is whether the class StreamSocket in metro could be compatible to a legacy server running openssl+winsock where 'compatible' means StreamSocket client could setup a secure connection and talk to openssl server. The similar situation goes to DatagramSocket client vs. winsock(UDP) server. Could you confirm please?

    Tuesday, September 18, 2012 2:07 AM
  • Hi ofox.cn,

    I used ssl connection of StreamSocket to connect MS lync server and it able to initiate for SSL/TLS connection request.

    There is no option in case of DatagramSocket for enabling SSL/TLS connection. SSL/TLS connection only used in TCP communication.

    Wednesday, September 19, 2012 1:59 PM
  • Mokarrom, Thank you! Great  to know that. Based on your info, I would believe StreamSocket follows the standard SSL protocol and could talk to an openssl-enabled server.

    Regarding DatagramSocket vs. UDP, I didn't mean SSL in this context. I just meant the compatibility of DatagramSocket client vs. legacy UDP(e.g., winsock) server. Now I would likely believe they are good to talk each other in a standard UDP way.

    If these assumptions are not true, plz drop a msg to let me know. Thanks a lot!

    Thursday, September 20, 2012 2:28 AM