[GitHub] thefourtheye opened a new pull request #87: clear response buffer with unsupported extension

[GitBox <gi...@apache.org>]

thefourtheye opened a new pull request #87: clear response buffer with unsupported extension
URL: https://github.com/apache/mina-sshd/pull/87
 
 
   As it is, if a client requests to use an extension which is not
   supported by the server, the server is supposed to send
   `SSH_FX_OP_UNSUPPORTED`. It does send that, but it doesn't clear the
   `Buffer` object before sending the response. So, all the clients who
   are requesting an unsupported extension are impacted with invalid
   bytestream of response data and the channel becomes unusable.
   
   This patch simply clears the buffer with `prepareReply` function before
   sending the response.
   
   ---
   
   cc @The-Yoda @sramki

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