From: grahn+nntp@snipabacken.se   
      
   On Fri, 2013-05-03, Barry Margolin wrote:   
   > In article ,   
   >  glen herrmannsfeldt  wrote:   
   >   
   >> Jorgen Grahn  wrote:   
   >> (snip, someone wrote)   
   >>   
   >> >>>> > Does it mean that it's possible to have IP packet carrying UDP   
   >> >>>> > payload of size 0 ?   
   >>   
   >> (snip)   
   >> > And also it should come as no surprise.  It's about as natural as a   
   >> > programming language allowing zero-sized arrays/vectors/lists.   
   >>   
   >> About that natural, but it has been slow in coming.   
   >>   
   >> Fortran now does, but it didn't used to.   
   >>   
   >> Many still don't.   
   >   
   > Many? Examples?   
      
   I guess he meant at least C.  Perhaps it was a bad comparison on my   
   part. It just makes sense to me that when you support size 1--N cases,   
   for symmetry reasons it's a good idea to support size 0 too. The "null"   
   case, so to speak.   
      
   On the other hand, I suppose very few UDP messages with no data are   
   sent in practice.  Higher-level protocols tend to start with   
   fixed-size headers.   
      
   /Jorgen   
      
   --   
     // Jorgen Grahn    O  o   .   
      
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