#include <misc_utils.h>#include <chord.h>#include <id_utils.h>#include "rpclib.h"u_int64_t starttime;unsigned trials = 1;bool verbose = true;chord_node dst;void findroute(chordID key);voidfindroute_cb (chord_node n,	      ptr<chord_findarg> fa, chord_nodelistres *route, clnt_stat err){  if (err) {    fatal << "findroute RPC failed: " << err << "\n";  } else if (route->status != CHORD_OK) {    fatal << "findroute RPC bad status: " << route->status << "\n";  } else if (route->resok->nlist.size () < 1) {    fatal << "findroute RPC returned no route!\n";  } else {    strbuf s;    if (!verbose) {      s << " key " << (fa->x>>144) << " rsz " << route->resok->nlist.size ();    } else {      warnx << "Found " << fa->x << " via:\n";      for (size_t i = 0; i < route->resok->nlist.size (); i++) {	chord_node z = make_chord_node (route->resok->nlist[i]);	chordID n    = z.x;	str host     = z.r.hostname;	u_short port = z.r.port;	int index    = z.vnode_num;	assert (index >= 0);	s << i << ": "	  << n << " " << host << " " << port << " " << index << "\n";      }    }    warnx << s << " done " << (getusec () -starttime)/1000 << " msec\n";  }        delete route;  trials--;  if (trials == 0)    exit (0);  else {    chordID x = make_randomID ();    findroute (x);  }}void findroute(chordID key){  ptr<chord_findarg> fa = New refcounted<chord_findarg> ();  fa->x = key;  fa->return_succs = false;  chord_nodelistres *route = New chord_nodelistres ();  starttime = getusec ();  doRPC (dst, chord_program_1,	 CHORDPROC_FINDROUTE, fa, route, wrap (&findroute_cb, dst, fa, route));}intmain (int argc, char *argv[]){  chordID x;  if (argc < 3)     fatal << "Usage: findroute host port [key]\n";  if (inet_addr (argv[1]) == INADDR_NONE) {    // yep, this still blocks.    struct hostent *h = gethostbyname (argv[1]);    if (!h)      fatal << "Invalid address or hostname: " << argv[1] << "\n";    struct in_addr *ptr = (struct in_addr *) h->h_addr;    dst.r.hostname = inet_ntoa (*ptr);  } else {    dst.r.hostname = argv[1];  }    dst.r.port = atoi (argv[2]);  dst.x = make_chordID (dst.r.hostname, dst.r.port);  dst.vnode_num = 0;  bool ok = false;  if (argc > 3) {    ok = str2chordID (argv[3], x);  }  if (!ok) {    verbose = false;    trials = 100;    x = make_randomID ();  }  findroute (x);  amain ();}