#!/usr/bin/env p2sh -s

let packets = map {};
let bytes = map {};

@ {
  let f1 = [($1).src, ($1).dst];
  let f2 = [($1).dst, ($1).src];
  let dir1 = contains(packets, f1);
  let dir2 = contains(packets, f2);
  if dir1 || dir2 {
    if dir1 {
      packets[f1] = packets[f1] + 1;
      bytes[f1] = bytes[f1] + ($0).caplen;
    } else {
      packets[f2] = packets[f2] + 1;
      bytes[f2] = bytes[f2] + ($0).caplen;
    }
  } else {
    packets[f1] = 1;
    bytes[f1] = ($0).caplen;
  }
}

@ end {
  puts("Flow packets:")
  puts(packets);
  puts("Flow bytes:")
  puts(bytes);
}