When using the on SOCKREAD event, is it necessary to use a loop to keep checking the receive buffer? I notice that many socket scripts don't bother even using a loop. I don't notice any difference using a loop or not. What can happen if I don't use a loop?

Take these two on SOCKREAD codes for example:

Example 1

Code:
 
on *:sockread:test:{
  if ($sockerr > 0) { return }
  sockread %temp
  if ($sockbr == 0) { return }
  echo -a %temp
}

Example 2

Code:
 
on *:sockread:test:{
  if ($sockerr > 0) { return }
  :nextread
  sockread %temp
  if ($sockbr == 0) { return }
  echo -a %temp
  goto nextread
}


Both do the same thing. Why use a loop?