3e88f955   
   From: barmar@alum.mit.edu   
      
   In article   
   ,   
    gsa.wrk@gmail.com wrote:   
      
   > Hi,   
   > We need to send packets with all 7 OSI layers implemented from our   
   > client to a Server(now using simulator, but in reality a device). We   
   > know that, when sent over sockets, the Ethernet, IP and TCP headers   
   > are automatically added to the payload. but while sending a message   
   > which is coming down from Application layer, how do we attach the   
   > headers of Sessions, Presentation and Application layer? Is there any   
   > method in Tcl to automate this? Also, I see some other packets under   
   > trees 'TPKT', 'COTP' below TCP and above sessions layer. Do we need to   
   > specially take care of these layers ?   
   >   
   > Regards,   
   > GSA   
      
   TCP/IP don't have any explicit Session and Presentation layers.  And   
   Application layers are all ideosyncratic; some of them have headers   
   (e.g. DNS), others are just plain text (e.g. SMTP, FTP, and TELNET).   
      
   --   
   Barry Margolin, barmar@alum.mit.edu   
   Arlington, MA   
   *** PLEASE don't copy me on replies, I'll read them in the group ***   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)