Description of various protocols used in the Whiteboard.

--------------------------------------------------------------------------------
The PUT protocol: Put file from client to server.

    client                         server          comments
    ------                         ------          --------

      o----------------------------->.             open a socket to the server

   "PUT: file optList" ->

                                <- "TCLWB/1.0 200 Ok"
                                                   it is not necessary to 
                                                   return the 'optList'

    fcopy ------------------------> fcopy

--------------------------------------------------------------------------------

The GET protocol: Get file from server to client.

    client                         server          comments
    ------                         ------          --------

      o----------------------------->.             open a socket to the server

   "GET: file" ->

                                <- "TCLWB/1.0 200 Ok"
                                <- "key: value key:value ..."
                                                   it is necessary to return 
                                                   an 'optList' that 
                                                   specifies byte size and 
                                                   MIME type

    fcopy <------------------------ fcopy

--------------------------------------------------------------------------------



Legend:
         file      name of the file, only the tail
         optList   "key: value key:value ..." which resembles the HTTP 
                   protocol