gear_sender.cc
上传用户:rrhhcc
上传日期:2015-12-11
资源大小:54129k
文件大小:12k
- //
- // gear_sender.cc : Gear Sender Main File
- // author : Fabio Silva
- //
- // Copyright (C) 2000-2003 by the University of Southern California
- // $Id: gear_sender.cc,v 1.5 2005/09/13 04:53:46 tomh Exp $
- //
- // This program is free software; you can redistribute it and/or
- // modify it under the terms of the GNU General Public License,
- // version 2, as published by the Free Software Foundation.
- //
- // This program is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU General Public License for more details.
- //
- // You should have received a copy of the GNU General Public License along
- // with this program; if not, write to the Free Software Foundation, Inc.,
- // 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- //
- // Linking this file statically or dynamically with other modules is making
- // a combined work based on this file. Thus, the terms and conditions of
- // the GNU General Public License cover the whole combination.
- //
- // In addition, as a special exception, the copyright holders of this file
- // give you permission to combine this file with free software programs or
- // libraries that are released under the GNU LGPL and with code included in
- // the standard release of ns-2 under the Apache 2.0 license or under
- // otherwise-compatible licenses with advertising requirements (or modified
- // versions of such code, with unchanged license). You may copy and
- // distribute such a system following the terms of the GNU GPL for this
- // file and the licenses of the other code concerned, provided that you
- // include the source code of that other code when and as the GNU GPL
- // requires distribution of source code.
- //
- // Note that people who make modified versions of this file are not
- // obligated to grant this special exception for their modified versions;
- // it is their choice whether to do so. The GNU General Public License
- // gives permission to release a modified version without this exception;
- // this exception also makes it possible to release a modified version
- // which carries forward this exception.
- #include "gear_sender.hh"
- #include <unistd.h>
- #ifdef NS_DIFFUSION
- static class GearSenderAppClass : public TclClass {
- public:
- GearSenderAppClass() : TclClass("Application/DiffApp/GearSenderApp") {}
- TclObject * create(int argc, const char*const* argv) {
- return (new GearSenderApp());
- }
- } class_gear_sender_app_class;
- void GearSendDataTimer::expire(Event *e) {
- a_->send();
- }
- void GearSenderApp::send()
- {
- struct timeval tmv;
- int retval;
-
- // Send data if we have active subscriptions
- if ((num_subscriptions_ > 0) || using_push_)
- {
- // Update time in the packet
- GetTime(&tmv);
- lastEventTime_->seconds_ = tmv.tv_sec;
- lastEventTime_->useconds_ = tmv.tv_usec;
-
- // Send data probe
- DiffPrint(DEBUG_ALWAYS, "Node%d: Sending Data %dn", ((DiffusionRouting *)dr_)->getNodeId(), last_seq_sent_);
- retval = dr_->send(pubHandle_, &data_attr_);
-
- // Update counter
- last_seq_sent_++;
- counterAttr_->setVal(last_seq_sent_);
- }
- // re-schedule the timer
- sdt_.resched(SEND_DATA_INTERVAL);
- }
- int GearSenderApp::command(int argc, const char*const* argv) {
- if (argc == 2) {
- if (strcmp(argv[1], "publish") == 0) {
- run();
- return TCL_OK;
- }
- }
- else if (argc >= 6) {
- // TCL API $app push-pull-option <push/pull> <point/region> <co-od1> <co-od2> <co-od3> <co-od4>
- if (strcmp(argv[1], "push-pull-options") == 0) {
- if (strcmp(argv[2], "push") == 0)
- using_push_ = true;
- else
- using_push_ = false;
- if (strcmp(argv[3], "point") == 0)
- {
- using_points_ = true;
- if (argv[4] != NULL && argv[5] != NULL)
- {
- lat_pt_ = atoi(argv[4]);
- long_pt_ = atoi(argv[5]);
- }
- }
- else
- {
- using_points_ = false;
- if (argv[4] != NULL && argv[5] != NULL && argv[6] != NULL && argv[7] != NULL)
- {
- lat_min_ = atoi(argv[4]);
- lat_max_ = atoi(argv[5]);
- long_min_ = atoi(argv[6]);
- long_max_ = atoi(argv[7]);
- }
- }
- return TCL_OK;
- }
- }
- return DiffApp::command(argc, argv);
- }
- #endif //NS_DIFFUSION
- void GearSenderReceive::recv(NRAttrVec *data, NR::handle my_handle)
- {
- app_->recv(data, my_handle);
- }
- void GearSenderApp::recv(NRAttrVec *data, NR::handle my_handle)
- {
- NRSimpleAttribute<int> *nrclass = NULL;
- nrclass = NRClassAttr.find(data);
- if (!nrclass){
- DiffPrint(DEBUG_ALWAYS, "Received a BAD packet !n");
- return;
- }
- switch (nrclass->getVal()){
- case NRAttribute::INTEREST_CLASS:
- DiffPrint(DEBUG_ALWAYS, "Received an Interest message !n");
- num_subscriptions_++;
- break;
- case NRAttribute::DISINTEREST_CLASS:
- DiffPrint(DEBUG_ALWAYS, "Received a Disinterest message !n");
- num_subscriptions_--;
- break;
- default:
- DiffPrint(DEBUG_ALWAYS, "Received an unknown message (%d)!n", nrclass->getVal());
- break;
- }
- }
- handle GearSenderApp::setupSubscription()
- {
- NRAttrVec attrs;
- attrs.push_back(NRClassAttr.make(NRAttribute::NE,
- NRAttribute::DATA_CLASS));
- attrs.push_back(NRScopeAttr.make(NRAttribute::IS,
- NRAttribute::NODE_LOCAL_SCOPE));
- attrs.push_back(GearTargetAttr.make(NRAttribute::EQ, "F117A"));
- attrs.push_back(LatitudeAttr.make(NRAttribute::IS, lat_pt_));
- attrs.push_back(LongitudeAttr.make(NRAttribute::IS, long_pt_));
- handle h = dr_->subscribe(&attrs, mr_);
- ClearAttrs(&attrs);
- return h;
- }
- handle GearSenderApp::setupPublication()
- {
- NRAttrVec attrs;
- attrs.push_back(NRClassAttr.make(NRAttribute::IS,
- NRAttribute::DATA_CLASS));
- // Use push or pull semantics
- if (using_push_){
- attrs.push_back(NRScopeAttr.make(NRAttribute::IS,
- NRAttribute::GLOBAL_SCOPE));
- // Insert point or region coordinates
- if (using_points_){
- attrs.push_back(LatitudeAttr.make(NRAttribute::EQ, lat_pt_));
- attrs.push_back(LongitudeAttr.make(NRAttribute::EQ, long_pt_));
- }
- else{
- attrs.push_back(LatitudeAttr.make(NRAttribute::GE, lat_min_));
- attrs.push_back(LatitudeAttr.make(NRAttribute::LE, lat_max_));
- attrs.push_back(LongitudeAttr.make(NRAttribute::GE, long_min_));
- attrs.push_back(LongitudeAttr.make(NRAttribute::LE, long_max_));
- }
- }
- else{
- attrs.push_back(NRScopeAttr.make(NRAttribute::IS,
- NRAttribute::NODE_LOCAL_SCOPE));
- // Insert point coordinates
- attrs.push_back(LatitudeAttr.make(NRAttribute::IS, lat_pt_));
- attrs.push_back(LongitudeAttr.make(NRAttribute::IS, long_pt_));
- }
- attrs.push_back(GearTargetAttr.make(NRAttribute::IS, "F117A"));
- handle h = dr_->publish(&attrs);
- ClearAttrs(&attrs);
- return h;
- }
- void GearSenderApp::run()
- {
- struct timeval tmv;
- #ifndef NS_DIFFUSION
- int retval;
- #endif // !NS_DIFFUSION
-
- #ifdef INTERACTIVE
- char input;
- fd_set FDS;
- #endif // INTERATIVE
- // Setup publication and subscription
- if (!using_push_)
- subHandle_ = setupSubscription();
- pubHandle_ = setupPublication();
- // Create time attribute
- GetTime(&tmv);
- lastEventTime_ = new EventTime;
- lastEventTime_->seconds_ = tmv.tv_sec;
- lastEventTime_->useconds_ = tmv.tv_usec;
- timeAttr_ = GearTimeAttr.make(NRAttribute::IS, (void *) &lastEventTime_,
- sizeof(EventTime));
- data_attr_.push_back(timeAttr_);
- // Change pointer to point to attribute's payload
- delete lastEventTime_;
- lastEventTime_ = (EventTime *) timeAttr_->getVal();
- // Create counter attribute
- counterAttr_ = GearCounterAttr.make(NRAttribute::IS, last_seq_sent_);
- data_attr_.push_back(counterAttr_);
- #ifndef NS_DIFFUSION
- // Main thread will send ping probes
- while(1){
- #ifdef INTERACTIVE
- FD_SET(0, &FDS);
- fprintf(stdout, "Press <Enter> to send a ping probe...");
- fflush(NULL);
- select(1, &FDS, NULL, NULL, NULL);
- input = getc(stdin);
- #else
- sleep(SEND_DATA_INTERVAL);
- #endif // INTERACTIVE
- // Send data packet if we have active subscriptions
- if ((num_subscriptions_ > 0) || using_push_){
- // Update time in the packet
- GetTime(&tmv);
- lastEventTime_->seconds_ = tmv.tv_sec;
- lastEventTime_->useconds_ = tmv.tv_usec;
- // Send data probe
- DiffPrint(DEBUG_ALWAYS, "Node%d: Sending Data %dn", ((DiffusionRouting *)dr_)->getNodeId(), last_seq_sent_);
- retval = dr_->send(pubHandle_, &data_attr_);
- // Update counter
- last_seq_sent_++;
- counterAttr_->setVal(last_seq_sent_);
- }
- }
- #else
- send();
- #endif // !NS_DIFFUSION
- }
- void GearSenderApp::usage(char *s){
- DiffPrint(DEBUG_ALWAYS, "Usage: %s [-d debug] [-p port] [-s] [-r] [-h]nn", s);
- DiffPrint(DEBUG_ALWAYS, "t-d - Sets debug level (0-10)n");
- DiffPrint(DEBUG_ALWAYS, "t-p - Uses port 'port' to talk to diffusionn");
- DiffPrint(DEBUG_ALWAYS, "t-s - Uses push semantics (default: pull)n");
- DiffPrint(DEBUG_ALWAYS, "t-r - Uses regions (default: points)n");
- DiffPrint(DEBUG_ALWAYS, "t-h - Prints this informationn");
- DiffPrint(DEBUG_ALWAYS, "n");
- exit(0);
- }
- void GearSenderApp::parseCommandLine(int argc, char **argv)
- {
- u_int16_t diff_port = DEFAULT_DIFFUSION_PORT;
- int debug_level;
- int opt;
- config_file_ = NULL;
- using_points_ = true;
- using_push_ = false;
- opterr = 0;
- while (1){
- opt = getopt(argc, argv, "srhd:p:");
- switch (opt){
- case 'p':
- diff_port = (u_int16_t) atoi(optarg);
- if ((diff_port < 1024) || (diff_port >= 65535)){
- DiffPrint(DEBUG_ALWAYS, "Error: Diffusion port must be between 1024 and 65535 !n");
- exit(-1);
- }
- break;
- case 'h':
- usage(argv[0]);
- break;
- case 'd':
- debug_level = atoi(optarg);
- if (debug_level < 1 || debug_level > 10){
- DiffPrint(DEBUG_ALWAYS, "Error: Debug level outside range or missing !n");
- usage(argv[0]);
- }
- global_debug_level = debug_level;
- break;
- case 's':
- using_push_ = true;
- break;
- case 'r':
- using_points_ = false;
- break;
- case '?':
- DiffPrint(DEBUG_ALWAYS,
- "Error: %c isn't a valid option or its parameter is missing !n", optopt);
- usage(argv[0]);
- break;
- case ':':
- DiffPrint(DEBUG_ALWAYS, "Parameter missing !n");
- usage(argv[0]);
- break;
- }
- if (opt == -1)
- break;
- }
- diffusion_port_ = diff_port;
- }
- void GearSenderApp::readGeographicCoordinates()
- {
- char *gear_coord_env;
- if (using_points_ || !using_push_){
- // Read latitude coordinate
- gear_coord_env = getenv("lat_pt");
- if (!gear_coord_env){
- DiffPrint(DEBUG_ALWAYS, "Cannot read lat_pt !n");
- exit(-1);
- }
- lat_pt_ = atoi(gear_coord_env);
- // Read longitude coordinate
- gear_coord_env = getenv("long_pt");
- if (!gear_coord_env){
- DiffPrint(DEBUG_ALWAYS, "Cannot read long_pt !n");
- exit(-1);
- }
- long_pt_ = atoi(gear_coord_env);
- }
- else{
- // Read latitude_min value
- gear_coord_env = getenv("lat_min");
- if (!gear_coord_env){
- DiffPrint(DEBUG_ALWAYS, "Cannot read lat_min !n");
- exit(-1);
- }
- lat_min_ = atoi(gear_coord_env);
- // Read latitude_max value
- gear_coord_env = getenv("lat_max");
- if (!gear_coord_env){
- DiffPrint(DEBUG_ALWAYS, "Cannot read lat_max !n");
- exit(-1);
- }
- lat_max_ = atoi(gear_coord_env);
- // Read longitude_min value
- gear_coord_env = getenv("long_min");
- if (!gear_coord_env){
- DiffPrint(DEBUG_ALWAYS, "Cannot read long_min !n");
- exit(-1);
- }
- long_min_ = atoi(gear_coord_env);
- // Read longitude_max value
- gear_coord_env = getenv("long_max");
- if (!gear_coord_env){
- DiffPrint(DEBUG_ALWAYS, "Cannot read long_max !n");
- exit(-1);
- }
- long_max_ = atoi(gear_coord_env);
- }
- }
- #ifdef NS_DIFFUSION
- GearSenderApp::GearSenderApp() : sdt_(this)
- #else
- GearSenderApp::GearSenderApp(int argc, char **argv)
- #endif //NS_DIFFUSION
- {
- last_seq_sent_ = 0;
- num_subscriptions_ = 0;
- mr_ = new GearSenderReceive(this);
- #ifndef NS_DIFFUSION
- parseCommandLine(argc, argv);
- readGeographicCoordinates();
- dr_ = NR::createNR(diffusion_port_);
- #endif //!NS_DIFFUSION
- }
- #ifndef USE_SINGLE_ADDRESS_SPACE
- int main(int argc, char **argv)
- {
- GearSenderApp *app;
- app = new GearSenderApp(argc, argv);
- app->run();
- return 0;
- }
- #endif //!USE_SINGLE_ADDRESS_SPACE