A Blockchain-Based Contractual Routing Protocol for the Internet of Things Using Smart Contracts

Algorithm 6

Abort function.

1:  function ABORT()

2:   Transfer tokens from the function caller to the block producer.

3:   if is Route Requested and the function caller is then

4:    Transfer tokens back to the function caller

5:   end if

6:   if is Route Offered then

7:    if the function caller is then

8:     Transfer tokens back to the function caller

9:     Transfer Offer tokens of all intermediary devices back to them

10:   end if

11:   if the function caller is then

12:    Transfer Offer tokens back to the function caller

13:   end if

14:  end if

15:  if is Route Accepted then

16:   if the function caller is or then

17:    Transfer of the and tokens back to

18:   end if

19:   if the function caller is then

20:    Transfer of the and tokens back to

21:   end if

22:  end if

23: end function