forcetcp.hh

来自「COPE the first practical network coding 」· HH 代码 · 共 41 行

#ifndef CLICK_FORCETCP_HH
#define CLICK_FORCETCP_HH
#include <click/element.hh>
#include <click/glue.hh>
CLICK_DECLS

/*
 * =c
 * ForceTCP([DPORT [,RANDOM [, FLAGS]]])
 * =s TCP
 * sets TCP packet fields
 * =d
 * Set the checksum and some other fields to try to make a packet look like
 * TCP. If DPORT is specified and not -1, forces the destination port to be
 * DPORT. Otherwise, if RANDOM is set, destination port may be randomly set.
 * If RANDOM is not set and DPORT is -1, destination port is untouched. RANDOM
 * has no effect if DPORT is not -1. If FLAGS is specified and not -1, set the
 * TCP flags field to FLAGS.
 */

class ForceTCP : public Element {
public:
  ForceTCP();
  ~ForceTCP();
  
  const char *class_name() const		{ return "ForceTCP"; }
  const char *processing() const		{ return AGNOSTIC; }
  int configure(Vector<String> &conf, ErrorHandler *errh);

  Packet *simple_action(Packet *);

private:
  int _count;
  int _dport;
  int _flags;
  bool _random;
};

CLICK_ENDDECLS
#endif