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   comp.protocols.tcp-ip      TCP and IP network protocols.      14,669 messages   

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   Message 12,844 of 14,669   
   Barry Margolin to Jorgen Grahn   
   Re: UDP socket && sendto && EPERM   
   07 May 09 22:47:53   
   
   From: barmar@alum.mit.edu   
      
   In article ,   
    Jorgen Grahn  wrote:   
      
   > On Wed, 6 May 2009 07:38:00 -0700 (PDT), David Schwartz   
   >  wrote:   
   > > On May 5, 9:16 pm, Barry Margolin  wrote:   
   > >   
   > >> Do you know this for a fact, or are you just guessing?   
   > >   
   > > I know for a fact that his code is broken and it's giving him problems   
   > > other people don't have. The only way to prove causality is for him to   
   > > fix his code and demonstrate that he still has the problem. He has to   
   > > fix it anyway.   
   > >   
   > >> Why does it   
   > >> return this error code in that case, surely there must be a more   
   > >> appropriate code, since this has nothing to do with permissions.   
   > >   
   > > It has everything to do with permissions. Only 'root' is permitted to   
   > > use network resources in anti-social ways. Ordinary users are subject   
   > > to rational limits.   
   >   
   > You need to provide references for this I think ...   
      
   I'd also like to see that.  I've never heard of any Unix-type system   
   that checks for "anti-social" behavior.  Either you have permission to   
   use a resource or you don't.  While it's certainly possible to implement   
   rate limiting in the network driver, I've never heard of Linux actually   
   doing so, certainly not by default.   
      
   --   
   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)   

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