sjero.net Git - iperf/blob - src/Reporter.c

   1 /*---------------------------------------------------------------
   2  * Copyright (c) 1999,2000,2001,2002,2003
   3  * The Board of Trustees of the University of Illinois
   4  * All Rights Reserved.
   5  *---------------------------------------------------------------
   6  * Permission is hereby granted, free of charge, to any person
   7  * obtaining a copy of this software (Iperf) and associated
   8  * documentation files (the "Software"), to deal in the Software
   9  * without restriction, including without limitation the
  10  * rights to use, copy, modify, merge, publish, distribute,
  11  * sublicense, and/or sell copies of the Software, and to permit
  12  * persons to whom the Software is furnished to do
  13  * so, subject to the following conditions:
  14  *
  15  *
  16  * Redistributions of source code must retain the above
  17  * copyright notice, this list of conditions and
  18  * the following disclaimers.
  19  *
  20  *
  21  * Redistributions in binary form must reproduce the above
  22  * copyright notice, this list of conditions and the following
  23  * disclaimers in the documentation and/or other materials
  24  * provided with the distribution.
  25  *
  26  *
  27  * Neither the names of the University of Illinois, NCSA,
  28  * nor the names of its contributors may be used to endorse
  29  * or promote products derived from this Software without
  30  * specific prior written permission.
  31  *
  32  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  33  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  34  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  35  * NONINFRINGEMENT. IN NO EVENT SHALL THE CONTIBUTORS OR COPYRIGHT
  36  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  37  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  38  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  39  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  40  * ________________________________________________________________
  41  * National Laboratory for Applied Network Research
  42  * National Center for Supercomputing Applications
  43  * University of Illinois at Urbana-Champaign
  44  * http://www.ncsa.uiuc.edu
  45  * ________________________________________________________________
  46  *
  47  * Reporter.c
  48  * by Kevin Gibbs <kgibbs@nlanr.net>
  49  *
  50  * ________________________________________________________________ */
  51
  52 #include "headers.h"
  53 #include "Settings.hpp"
  54 #include "util.h"
  55 #include "Reporter.h"
  56 #include "Thread.h"
  57 #include "Locale.h"
  58 #include "PerfSocket.hpp"
  59 #include "SocketAddr.h"
  60
  61 #ifdef __cplusplus
  62 extern "C" {
  63 #endif
  64
  65 /*
  66   The following 4 functions are provided for Reporting
  67   styles that do not have all the reporting formats. For
  68   instance the provided CSV format does not have a settings
  69   report so it uses settings_notimpl.
  70   */
  71 void* connection_notimpl( Connection_Info * nused, int nuse ) {
  72     return NULL;
  73 }
  74 void settings_notimpl( ReporterData * nused ) { }
  75 void statistics_notimpl( Transfer_Info * nused ) { }
  76 void serverstatistics_notimpl( Connection_Info *nused1, Transfer_Info *nused2 ) { }
  77
  78 // To add a reporting style include its header here.
  79 #include "report_default.h"
  80 #include "report_CSV.h"
  81
  82 // The following array of report structs contains the
  83 // pointers required for reporting in different reporting
  84 // styles. To add a reporting style add a report struct
  85 // below.
  86 report_connection connection_reports[kReport_MAXIMUM] = {
  87     reporter_reportpeer,
  88     CSV_peer
  89 };
  90
  91 report_settings settings_reports[kReport_MAXIMUM] = {
  92     reporter_reportsettings,
  93     settings_notimpl
  94 };
  95
  96 report_statistics statistics_reports[kReport_MAXIMUM] = {
  97     reporter_printstats,
  98     CSV_stats
  99 };
 100
 101 report_serverstatistics serverstatistics_reports[kReport_MAXIMUM] = {
 102     reporter_serverstats,
 103     CSV_serverstats
 104 };
 105
 106 report_statistics multiple_reports[kReport_MAXIMUM] = {
 107     reporter_multistats,
 108     CSV_stats
 109 };
 110
 111 char buffer[64]; // Buffer for printing
 112 ReportHeader *ReportRoot = NULL;
 113 extern Condition ReportCond;
 114 extern Condition ReportDoneCond;
 115 int reporter_process_report ( ReportHeader *report );
 116 void process_report ( ReportHeader *report );
 117 int reporter_handle_packet( ReportHeader *report );
 118 int reporter_condprintstats( ReporterData *stats, MultiHeader *multireport, int force );
 119 int reporter_print( ReporterData *stats, int type, int end );
 120 void PrintMSS( ReporterData *stats );
 121
 122 MultiHeader* InitMulti( thread_Settings *agent, int inID ) {
 123     MultiHeader *multihdr = NULL;
 124     if ( agent->mThreads > 1 || agent->mThreadMode == kMode_Server ) {
 125         if ( isMultipleReport( agent ) ) {
 126             multihdr = malloc(sizeof(MultiHeader) +  sizeof(ReporterData) +
 127                               NUM_MULTI_SLOTS * sizeof(Transfer_Info));
 128         } else {
 129             multihdr = malloc(sizeof(MultiHeader));
 130         }
 131         if ( multihdr != NULL ) {
 132             memset( multihdr, 0, sizeof(MultiHeader) );
 133             Condition_Initialize( &multihdr->barrier );
 134             multihdr->groupID = inID;
 135             multihdr->threads = agent->mThreads;
 136             if ( isMultipleReport( agent ) ) {
 137                 int i;
 138                 ReporterData *data = NULL;
 139                 multihdr->report = (ReporterData*)(multihdr + 1);
 140                 memset(multihdr->report, 0, sizeof(ReporterData));
 141                 multihdr->data = (Transfer_Info*)(multihdr->report + 1);
 142                 data = multihdr->report;
 143                 for ( i = 0; i < NUM_MULTI_SLOTS; i++ ) {
 144                     multihdr->data[i].startTime = -1;
 145                     multihdr->data[i].transferID = inID;
 146                     multihdr->data[i].groupID = -2;
 147                 }
 148                 data->type = TRANSFER_REPORT;
 149                 if ( agent->mInterval != 0.0 ) {
 150                     struct timeval *interval = &data->intervalTime;
 151                     interval->tv_sec = (long) agent->mInterval;
 152                     interval->tv_usec = (long) ((agent->mInterval - interval->tv_sec)
 153                                                 * rMillion);
 154                 }
 155                 data->mHost = agent->mHost;
 156                 data->mLocalhost = agent->mLocalhost;
 157                 data->mBufLen = agent->mBufLen;
 158                 data->mMSS = agent->mMSS;
 159                 data->mTCPWin = agent->mTCPWin;
 160                 data->flags = agent->flags;
 161                 data->mThreadMode = agent->mThreadMode;
 162                 data->mode = agent->mReportMode;
 163                 data->info.mFormat = agent->mFormat;
 164                 data->info.mTTL = agent->mTTL;
 165                 if ( isUDP( agent ) ) {
 166                     multihdr->report->info.mUDP = (char)agent->mThreadMode;
 167                 }
 168                 if ( isConnectionReport( agent ) ) {
 169                     data->type |= CONNECTION_REPORT;
 170                     data->connection.peer = agent->peer;
 171                     data->connection.size_peer = agent->size_peer;
 172                     SockAddr_setPortAny( &data->connection.peer );
 173                     data->connection.local = agent->local;
 174                     data->connection.size_local = agent->size_local;
 175                     SockAddr_setPortAny( &data->connection.local );
 176                 }
 177             }
 178         } else {
 179             FAIL(1, "Out of Memory!!\n", agent);
 180         }
 181     }
 182     return multihdr;
 183 }
 184
 185 /*
 186  * BarrierClient allows for multiple stream clients to be syncronized
 187  */
 188 void BarrierClient( ReportHeader *agent ) {
 189     Condition_Lock(agent->multireport->barrier);
 190     agent->multireport->threads--;
 191     if ( agent->multireport->threads == 0 ) {
 192         // last one set time and wake up everyone
 193         gettimeofday( &(agent->multireport->startTime), NULL );
 194         Condition_Broadcast( &agent->multireport->barrier );
 195     } else {
 196         Condition_Wait( &agent->multireport->barrier );
 197     }
 198     agent->multireport->threads++;
 199     Condition_Unlock( agent->multireport->barrier );
 200     agent->report.startTime = agent->multireport->startTime;
 201     agent->report.nextTime = agent->report.startTime;
 202     TimeAdd( agent->report.nextTime, agent->report.intervalTime );
 203 }
 204
 205 /*
 206  * InitReport is called by a transfer agent (client or
 207  * server) to setup the needed structures to communicate
 208  * traffic.
 209  */
 210 ReportHeader* InitReport( thread_Settings *agent ) {
 211     ReportHeader *reporthdr = NULL;
 212     ReporterData *data = NULL;
 213     if ( isDataReport( agent ) ) {
 214         /*
 215          * Create in one big chunk
 216          */
 217         reporthdr = malloc( sizeof(ReportHeader) +
 218                             NUM_REPORT_STRUCTS * sizeof(ReportStruct) );
 219         if ( reporthdr != NULL ) {
 220             // Only need to make sure the headers are clean
 221             memset( reporthdr, 0, sizeof(ReportHeader));
 222             reporthdr->data = (ReportStruct*)(reporthdr+1);
 223             reporthdr->multireport = agent->multihdr;
 224             data = &reporthdr->report;
 225             reporthdr->reporterindex = NUM_REPORT_STRUCTS - 1;
 226             data->info.transferID = agent->mSock;
 227             data->info.groupID = (agent->multihdr != NULL ? agent->multihdr->groupID
 228                                                           : -1);
 229             data->type = TRANSFER_REPORT;
 230             if ( agent->mInterval != 0.0 ) {
 231                 struct timeval *interval = &data->intervalTime;
 232                 interval->tv_sec = (long) agent->mInterval;
 233                 interval->tv_usec = (long) ((agent->mInterval - interval->tv_sec)
 234                                             * rMillion);
 235             }
 236             data->mHost = agent->mHost;
 237             data->mLocalhost = agent->mLocalhost;
 238             data->mBufLen = agent->mBufLen;
 239             data->mMSS = agent->mMSS;
 240             data->mTCPWin = agent->mTCPWin;
 241             data->flags = agent->flags;
 242             data->mThreadMode = agent->mThreadMode;
 243             data->mode = agent->mReportMode;
 244             data->info.mFormat = agent->mFormat;
 245             data->info.mTTL = agent->mTTL;
 246             if ( isUDP( agent ) ) {
 247                 reporthdr->report.info.mUDP = (char)agent->mThreadMode;
 248             }
 249         } else {
 250             FAIL(1, "Out of Memory!!\n", agent);
 251         }
 252     }
 253     if ( isConnectionReport( agent ) ) {
 254         if ( reporthdr == NULL ) {
 255             /*
 256              * Create in one big chunk
 257              */
 258             reporthdr = malloc( sizeof(ReportHeader) );
 259             if ( reporthdr != NULL ) {
 260                 // Only need to make sure the headers are clean
 261                 memset( reporthdr, 0, sizeof(ReportHeader));
 262                 data = &reporthdr->report;
 263                 data->info.transferID = agent->mSock;
 264                 data->info.groupID = -1;
 265             } else {
 266                 FAIL(1, "Out of Memory!!\n", agent);
 267             }
 268         }
 269         if ( reporthdr != NULL ) {
 270             data->type |= CONNECTION_REPORT;
 271             data->connection.peer = agent->peer;
 272             data->connection.size_peer = agent->size_peer;
 273             data->connection.local = agent->local;
 274             data->connection.size_local = agent->size_local;
 275         } else {
 276             FAIL(1, "Out of Memory!!\n", agent);
 277         }
 278     }
 279     if ( isConnectionReport( agent ) || isDataReport( agent ) ) {
 280
 281 #ifdef HAVE_THREAD
 282         /*
 283          * Update the ReportRoot to include this report.
 284          */
 285         if ( reporthdr->report.mThreadMode == kMode_Client &&
 286              reporthdr->multireport != NULL ) {
 287             // syncronize watches on my mark......
 288             BarrierClient( reporthdr );
 289         } else {
 290             if ( reporthdr->multireport != NULL && isMultipleReport( agent )) {
 291                 reporthdr->multireport->threads++;
 292                 if ( reporthdr->multireport->report->startTime.tv_sec == 0 ) {
 293                     gettimeofday( &(reporthdr->multireport->report->startTime), NULL );
 294                 }
 295                 reporthdr->report.startTime = reporthdr->multireport->report->startTime;
 296             } else {
 297                 // set start time
 298                 gettimeofday( &(reporthdr->report.startTime), NULL );
 299             }
 300             reporthdr->report.nextTime = reporthdr->report.startTime;
 301             TimeAdd( reporthdr->report.nextTime, reporthdr->report.intervalTime );
 302         }
 303         Condition_Lock( ReportCond );
 304         reporthdr->next = ReportRoot;
 305         ReportRoot = reporthdr;
 306         Condition_Signal( &ReportCond );
 307         Condition_Unlock( ReportCond );
 308 #else
 309         // set start time
 310         gettimeofday( &(reporthdr->report.startTime), NULL );
 311         /*
 312          * Process the report in this thread
 313          */
 314         reporthdr->next = NULL;
 315         process_report ( reporthdr );
 316 #endif
 317     }
 318     if ( !isDataReport( agent ) ) {
 319         reporthdr = NULL;
 320     }
 321     return reporthdr;
 322 }
 323
 324 /*
 325  * ReportPacket is called by a transfer agent to record
 326  * the arrival or departure of a "packet" (for TCP it
 327  * will actually represent many packets). This needs to
 328  * be as simple and fast as possible as it gets called for
 329  * every "packet".
 330  */
 331 void ReportPacket( ReportHeader* agent, ReportStruct *packet ) {
 332     if ( agent != NULL ) {
 333         int index = agent->reporterindex;
 334         /*
 335          * First find the appropriate place to put the information
 336          */
 337         if ( agent->agentindex == NUM_REPORT_STRUCTS ) {
 338             // Just need to make sure that reporter is not on the first
 339             // item
 340             while ( index == 0 ) {
 341                 Condition_Signal( &ReportCond );
 342                 Condition_Wait( &ReportDoneCond );
 343                 index = agent->reporterindex;
 344             }
 345             agent->agentindex = 0;
 346         }
 347         // Need to make sure that reporter is not about to be "lapped"
 348         while ( index - 1 == agent->agentindex ) {
 349             Condition_Signal( &ReportCond );
 350             Condition_Wait( &ReportDoneCond );
 351             index = agent->reporterindex;
 352         }
 353
 354         // Put the information there
 355         memcpy( agent->data + agent->agentindex, packet, sizeof(ReportStruct) );
 356
 357         // Updating agentindex MUST be the last thing done
 358         agent->agentindex++;
 359 #ifndef HAVE_THREAD
 360         /*
 361          * Process the report in this thread
 362          */
 363         process_report ( agent );
 364 #endif
 365     }
 366 }
 367
 368 /*
 369  * CloseReport is called by a transfer agent to finalize
 370  * the report and signal transfer is over.
 371  */
 372 void CloseReport( ReportHeader *agent, ReportStruct *packet ) {
 373     if ( agent != NULL) {
 374
 375         /*
 376          * Using PacketID of -1 ends reporting
 377          */
 378         packet->packetID = -1;
 379         packet->packetLen = 0;
 380         ReportPacket( agent, packet );
 381         packet->packetID = agent->report.cntDatagrams;
 382     }
 383 }
 384
 385 /*
 386  * EndReport signifies the agent no longer is interested
 387  * in the report. Calls to GetReport will no longer be
 388  * filled
 389  */
 390 void EndReport( ReportHeader *agent ) {
 391     if ( agent != NULL ) {
 392         int index = agent->reporterindex;
 393         while ( index != -1 ) {
 394             thread_rest();
 395             index = agent->reporterindex;
 396         }
 397         agent->agentindex = -1;
 398 #ifndef HAVE_THREAD
 399         /*
 400          * Process the report in this thread
 401          */
 402         process_report ( agent );
 403 #endif
 404     }
 405 }
 406
 407 /*
 408  * GetReport is called by the agent after a CloseReport
 409  * but before an EndReport to get the stats generated
 410  * by the reporter thread.
 411  */
 412 Transfer_Info *GetReport( ReportHeader *agent ) {
 413     int index = agent->reporterindex;
 414     while ( index != -1 ) {
 415         thread_rest();
 416         index = agent->reporterindex;
 417     }
 418     return &agent->report.info;
 419 }
 420
 421 /*
 422  * ReportSettings will generate a summary report for
 423  * settings being used with Listeners or Clients
 424  */
 425 void ReportSettings( thread_Settings *agent ) {
 426     if ( isSettingsReport( agent ) ) {
 427         /*
 428          * Create in one big chunk
 429          */
 430         ReportHeader *reporthdr = malloc( sizeof(ReportHeader) );
 431
 432         if ( reporthdr != NULL ) {
 433             ReporterData *data = &reporthdr->report;
 434             data->info.transferID = agent->mSock;
 435             data->info.groupID = -1;
 436             reporthdr->agentindex = -1;
 437             reporthdr->reporterindex = -1;
 438
 439             data->mHost = agent->mHost;
 440             data->mLocalhost = agent->mLocalhost;
 441             data->mode = agent->mReportMode;
 442             data->type = SETTINGS_REPORT;
 443             data->mBufLen = agent->mBufLen;
 444             data->mMSS = agent->mMSS;
 445             data->mTCPWin = agent->mTCPWin;
 446             data->flags = agent->flags;
 447             data->mThreadMode = agent->mThreadMode;
 448             data->mPort = agent->mPort;
 449             data->info.mFormat = agent->mFormat;
 450             data->info.mTTL = agent->mTTL;
 451             data->connection.peer = agent->peer;
 452             data->connection.size_peer = agent->size_peer;
 453             data->connection.local = agent->local;
 454             data->connection.size_local = agent->size_local;
 455
 456     #ifdef HAVE_THREAD
 457             /*
 458              * Update the ReportRoot to include this report.
 459              */
 460             Condition_Lock( ReportCond );
 461             reporthdr->next = ReportRoot;
 462             ReportRoot = reporthdr;
 463             Condition_Signal( &ReportCond );
 464             Condition_Unlock( ReportCond );
 465     #else
 466             /*
 467              * Process the report in this thread
 468              */
 469             reporthdr->next = NULL;
 470             process_report ( reporthdr );
 471     #endif
 472         } else {
 473             FAIL(1, "Out of Memory!!\n", agent);
 474         }
 475     }
 476 }
 477
 478 /*
 479  * ReportServerUDP will generate a report of the UDP
 480  * statistics as reported by the server on the client
 481  * side.
 482  */
 483 void ReportServerUDP( thread_Settings *agent, server_hdr *server ) {
 484     if ( (ntohl(server->flags) & HEADER_VERSION1) != 0 &&
 485          isServerReport( agent ) ) {
 486         /*
 487          * Create in one big chunk
 488          */
 489         ReportHeader *reporthdr = malloc( sizeof(ReportHeader) );
 490         Transfer_Info *stats = &reporthdr->report.info;
 491
 492         if ( reporthdr != NULL ) {
 493             stats->transferID = agent->mSock;
 494             stats->groupID = (agent->multihdr != NULL ? agent->multihdr->groupID
 495                                                       : -1);
 496             reporthdr->agentindex = -1;
 497             reporthdr->reporterindex = -1;
 498
 499             reporthdr->report.type = SERVER_RELAY_REPORT;
 500             reporthdr->report.mode = agent->mReportMode;
 501             stats->mFormat = agent->mFormat;
 502             stats->jitter = ntohl( server->jitter1 );
 503             stats->jitter += ntohl( server->jitter2 ) / (double)rMillion;
 504             stats->TotalLen = (((max_size_t) ntohl( server->total_len1 )) << 32) +
 505                                   ntohl( server->total_len2 );
 506             stats->startTime = 0;
 507             stats->endTime = ntohl( server->stop_sec );
 508             stats->endTime += ntohl( server->stop_usec ) / (double)rMillion;
 509             stats->cntError = ntohl( server->error_cnt );
 510             stats->cntOutofOrder = ntohl( server->outorder_cnt );
 511             stats->cntDatagrams = ntohl( server->datagrams );
 512             stats->mUDP = (char)kMode_Server;
 513             reporthdr->report.connection.peer = agent->local;
 514             reporthdr->report.connection.size_peer = agent->size_local;
 515             reporthdr->report.connection.local = agent->peer;
 516             reporthdr->report.connection.size_local = agent->size_peer;
 517
 518 #ifdef HAVE_THREAD
 519             /*
 520              * Update the ReportRoot to include this report.
 521              */
 522             Condition_Lock( ReportCond );
 523             reporthdr->next = ReportRoot;
 524             ReportRoot = reporthdr;
 525             Condition_Signal( &ReportCond );
 526             Condition_Unlock( ReportCond );
 527 #else
 528             /*
 529              * Process the report in this thread
 530              */
 531             reporthdr->next = NULL;
 532             process_report ( reporthdr );
 533 #endif
 534         } else {
 535             FAIL(1, "Out of Memory!!\n", agent);
 536         }
 537     }
 538 }
 539
 540 /*
 541  * This function is called only when the reporter thread
 542  * This function is the loop that the reporter thread processes
 543  */
 544 void reporter_spawn( thread_Settings *thread ) {
 545     do {
 546         // This section allows for safe exiting with Ctrl-C
 547         Condition_Lock ( ReportCond );
 548         if ( ReportRoot == NULL ) {
 549             // Allow main thread to exit if Ctrl-C is received
 550             thread_setignore();
 551             Condition_Wait ( &ReportCond );
 552             // Stop main thread from exiting until done with all reports
 553             thread_unsetignore();
 554         }
 555         Condition_Unlock ( ReportCond );
 556
 557 again:
 558         if ( ReportRoot != NULL ) {
 559             ReportHeader *temp = ReportRoot;
 560             //Condition_Unlock ( ReportCond );
 561             if ( reporter_process_report ( temp ) ) {
 562                 // This section allows for more reports to be added while
 563                 // the reporter is processing reports without needing to
 564                 // stop the reporter or immediately notify it
 565                 Condition_Lock ( ReportCond );
 566                 if ( temp == ReportRoot ) {
 567                     // no new reports
 568                     ReportRoot = temp->next;
 569                 } else {
 570                     // new reports added
 571                     ReportHeader *itr = ReportRoot;
 572                     while ( itr->next != temp ) {
 573                         itr = itr->next;
 574                     }
 575                     itr->next = temp->next;
 576                 }
 577                 // finished with report so free it
 578                 free( temp );
 579                 Condition_Unlock ( ReportCond );
 580                 Condition_Signal( &ReportDoneCond );
 581                 if (ReportRoot)
 582                     goto again;
 583             }
 584             Condition_Signal( &ReportDoneCond );
 585             usleep(10000);
 586         } else {
 587             //Condition_Unlock ( ReportCond );
 588         }
 589     } while ( 1 );
 590 }
 591
 592 /*
 593  * Used for single threaded reporting
 594  */
 595 void process_report ( ReportHeader *report ) {
 596     if ( report != NULL ) {
 597         if ( reporter_process_report( report ) ) {
 598             free( report );
 599         }
 600     }
 601 }
 602
 603 /*
 604  * Process reports starting with "reporthdr"
 605  */
 606 int reporter_process_report ( ReportHeader *reporthdr ) {
 607     int need_free = 0;
 608
 609     // Recursively process reports
 610     if ( reporthdr->next != NULL ) {
 611         if ( reporter_process_report( reporthdr->next ) ) {
 612             // If we are done with this report then free it
 613             ReportHeader *temp = reporthdr->next;
 614             reporthdr->next = reporthdr->next->next;
 615             free( temp );
 616         }
 617     }
 618
 619     if ( (reporthdr->report.type & SETTINGS_REPORT) != 0 ) {
 620         reporthdr->report.type &= ~SETTINGS_REPORT;
 621         return reporter_print( &reporthdr->report, SETTINGS_REPORT, 1 );
 622     } else if ( (reporthdr->report.type & CONNECTION_REPORT) != 0 ) {
 623         reporthdr->report.type &= ~CONNECTION_REPORT;
 624         reporter_print( &reporthdr->report, CONNECTION_REPORT,
 625                                (reporthdr->report.type == 0 ? 1 : 0) );
 626         if ( reporthdr->multireport != NULL && isMultipleReport( (&reporthdr->report) )) {
 627             if ( (reporthdr->multireport->report->type & CONNECTION_REPORT) != 0 ) {
 628                 reporthdr->multireport->report->type &= ~CONNECTION_REPORT;
 629                 reporter_print( reporthdr->multireport->report, CONNECTION_REPORT,
 630                                 (reporthdr->report.type == 0 ? 1 : 0) );
 631             }
 632         }
 633     } else if ( (reporthdr->report.type & SERVER_RELAY_REPORT) != 0 ) {
 634         reporthdr->report.type &= ~SERVER_RELAY_REPORT;
 635         return reporter_print( &reporthdr->report, SERVER_RELAY_REPORT, 1 );
 636     }
 637     if ( (reporthdr->report.type & TRANSFER_REPORT) != 0 ) {
 638         // If there are more packets to process then handle them
 639         if ( reporthdr->reporterindex >= 0 ) {
 640             // Need to make sure we do not pass the "agent"
 641             while ( reporthdr->reporterindex != reporthdr->agentindex - 1 ) {
 642                 if ( reporthdr->reporterindex == NUM_REPORT_STRUCTS - 1 ) {
 643                     if ( reporthdr->agentindex == 0 ) {
 644                         break;
 645                     } else {
 646                         reporthdr->reporterindex = 0;
 647                     }
 648                 } else {
 649                     reporthdr->reporterindex++;
 650                 }
 651                 if ( reporter_handle_packet( reporthdr ) ) {
 652                     // No more packets to process
 653                     reporthdr->reporterindex = -1;
 654                     break;
 655                 }
 656             }
 657         }
 658         // If the agent is done with the report then free it
 659         if ( reporthdr->agentindex == -1 ) {
 660             need_free = 1;
 661         }
 662     }
 663     return need_free;
 664 }
 665
 666 /*
 667  * Updates connection stats
 668  */
 669 int reporter_handle_packet( ReportHeader *reporthdr ) {
 670     ReportStruct *packet = &reporthdr->data[reporthdr->reporterindex];
 671     ReporterData *data = &reporthdr->report;
 672     Transfer_Info *stats = &reporthdr->report.info;
 673     int finished = 0;
 674
 675     data->cntDatagrams++;
 676     // If this is the last packet set the endTime
 677     if ( packet->packetID < 0 ) {
 678         data->packetTime = packet->packetTime;
 679         finished = 1;
 680         if ( reporthdr->report.mThreadMode != kMode_Client ) {
 681             data->TotalLen += packet->packetLen;
 682         }
 683     } else {
 684         // update recieved amount and time
 685         data->packetTime = packet->packetTime;
 686         reporter_condprintstats( &reporthdr->report, reporthdr->multireport, finished );
 687         data->TotalLen += packet->packetLen;
 688         if ( packet->packetID != 0 ) {
 689             // UDP packet
 690             double transit;
 691             double deltaTransit;
 692
 693             // from RFC 1889, Real Time Protocol (RTP)
 694             // J = J + ( | D(i-1,i) | - J ) / 16
 695             transit = TimeDifference( packet->packetTime, packet->sentTime );
 696             if ( data->lastTransit != 0.0 ) {
 697                 deltaTransit = transit - data->lastTransit;
 698                 if ( deltaTransit < 0.0 ) {
 699                     deltaTransit = -deltaTransit;
 700                 }
 701                 stats->jitter += (deltaTransit - stats->jitter) / (16.0);
 702             }
 703             data->lastTransit = transit;
 704
 705             // packet loss occured if the datagram numbers aren't sequential
 706             if ( packet->packetID != data->PacketID + 1 ) {
 707                 if ( packet->packetID < data->PacketID + 1 ) {
 708                     data->cntOutofOrder++;
 709                 } else {
 710                     data->cntError += packet->packetID - data->PacketID - 1;
 711                 }
 712             }
 713             // never decrease datagramID (e.g. if we get an out-of-order packet)
 714             if ( packet->packetID > data->PacketID ) {
 715                 data->PacketID = packet->packetID;
 716             }
 717         }
 718     }
 719
 720     // Print a report if appropriate
 721     return reporter_condprintstats( &reporthdr->report, reporthdr->multireport, finished );
 722 }
 723
 724 /*
 725  * Handles summing of threads
 726  */
 727 void reporter_handle_multiple_reports( MultiHeader *reporthdr, Transfer_Info *stats, int force ) {
 728     if ( reporthdr != NULL ) {
 729         if ( reporthdr->threads > 1 ) {
 730             int i;
 731             Transfer_Info *current = NULL;
 732             // Search for start Time
 733             for ( i = 0; i < NUM_MULTI_SLOTS; i++ ) {
 734                 current = &reporthdr->data[i];
 735                 if ( current->startTime == stats->startTime ) {
 736                     break;
 737                 }
 738             }
 739             if ( current->startTime != stats->startTime ) {
 740                 // Find first available
 741                 for ( i = 0; i < NUM_MULTI_SLOTS; i++ ) {
 742                     current = &reporthdr->data[i];
 743                     if ( current->startTime < 0 ) {
 744                         break;
 745                     }
 746                 }
 747                 current->cntDatagrams = stats->cntDatagrams;
 748                 current->cntError = stats->cntError;
 749                 current->cntOutofOrder = stats->cntOutofOrder;
 750                 current->TotalLen = stats->TotalLen;
 751                 current->mFormat = stats->mFormat;
 752                 current->endTime = stats->endTime;
 753                 current->jitter = stats->jitter;
 754                 current->startTime = stats->startTime;
 755                 current->free = 1;
 756             } else {
 757                 current->cntDatagrams += stats->cntDatagrams;
 758                 current->cntError += stats->cntError;
 759                 current->cntOutofOrder += stats->cntOutofOrder;
 760                 current->TotalLen += stats->TotalLen;
 761                 current->mFormat = stats->mFormat;
 762                 if ( current->endTime < stats->endTime ) {
 763                     current->endTime = stats->endTime;
 764                 }
 765                 if ( current->jitter < stats->jitter ) {
 766                     current->jitter = stats->jitter;
 767                 }
 768                 current->free++;
 769                 if ( current->free == reporthdr->threads ) {
 770                     void *reserved = reporthdr->report->info.reserved_delay;
 771                     current->free = force;
 772                     memcpy( &reporthdr->report->info, current, sizeof(Transfer_Info) );
 773                     current->startTime = -1;
 774                     reporthdr->report->info.reserved_delay = reserved;
 775                     reporter_print( reporthdr->report, MULTIPLE_REPORT, force );
 776                 }
 777             }
 778         }
 779     }
 780 }
 781
 782 /*
 783  * Prints reports conditionally
 784  */
 785 int reporter_condprintstats( ReporterData *stats, MultiHeader *multireport, int force ) {
 786     if ( force != 0 ) {
 787         stats->info.cntOutofOrder = stats->cntOutofOrder;
 788         // assume most of the time out-of-order packets are not
 789         // duplicate packets, so conditionally subtract them from the lost packets.
 790         stats->info.cntError = stats->cntError;
 791         if ( stats->info.cntError > stats->info.cntOutofOrder ) {
 792             stats->info.cntError -= stats->info.cntOutofOrder;
 793         }
 794         stats->info.cntDatagrams = (isUDP(stats) ? stats->PacketID : stats->cntDatagrams);
 795         stats->info.TotalLen = stats->TotalLen;
 796         stats->info.startTime = 0;
 797         stats->info.endTime = TimeDifference( stats->packetTime, stats->startTime );
 798         stats->info.free = 1;
 799         reporter_print( stats, TRANSFER_REPORT, force );
 800         if ( isMultipleReport(stats) ) {
 801             reporter_handle_multiple_reports( multireport, &stats->info, force );
 802         }
 803     } else while ((stats->intervalTime.tv_sec != 0 ||
 804                    stats->intervalTime.tv_usec != 0) &&
 805                   TimeDifference( stats->nextTime,
 806                                   stats->packetTime ) < 0 ) {
 807         stats->info.cntOutofOrder = stats->cntOutofOrder - stats->lastOutofOrder;
 808         stats->lastOutofOrder = stats->cntOutofOrder;
 809         // assume most of the time out-of-order packets are not
 810         // duplicate packets, so conditionally subtract them from the lost packets.
 811         stats->info.cntError = stats->cntError - stats->lastError;
 812         if ( stats->info.cntError > stats->info.cntOutofOrder ) {
 813             stats->info.cntError -= stats->info.cntOutofOrder;
 814         }
 815         stats->lastError = stats->cntError;
 816         stats->info.cntDatagrams = (isUDP( stats ) ? stats->PacketID - stats->lastDatagrams :
 817                                                      stats->cntDatagrams - stats->lastDatagrams);
 818         stats->lastDatagrams = (isUDP( stats ) ? stats->PacketID : stats->cntDatagrams);
 819         stats->info.TotalLen = stats->TotalLen - stats->lastTotal;
 820         stats->lastTotal = stats->TotalLen;
 821         stats->info.startTime = stats->info.endTime;
 822         stats->info.endTime = TimeDifference( stats->nextTime, stats->startTime );
 823         TimeAdd( stats->nextTime, stats->intervalTime );
 824         stats->info.free = 0;
 825         reporter_print( stats, TRANSFER_REPORT, force );
 826         if ( isMultipleReport(stats) ) {
 827             reporter_handle_multiple_reports( multireport, &stats->info, force );
 828         }
 829     }
 830     return force;
 831 }
 832
 833 /*
 834  * This function handles multiple format printing by sending to the
 835  * appropriate dispatch function
 836  */
 837 int reporter_print( ReporterData *stats, int type, int end ) {
 838     switch ( type ) {
 839         case TRANSFER_REPORT:
 840             statistics_reports[stats->mode]( &stats->info );
 841             if ( end != 0 && isPrintMSS( stats ) && !isUDP( stats ) ) {
 842                 PrintMSS( stats );
 843             }
 844             break;
 845         case SERVER_RELAY_REPORT:
 846             serverstatistics_reports[stats->mode]( &stats->connection, &stats->info );
 847             break;
 848         case SETTINGS_REPORT:
 849             settings_reports[stats->mode]( stats );
 850             break;
 851         case CONNECTION_REPORT:
 852             stats->info.reserved_delay = connection_reports[stats->mode](
 853                                                &stats->connection,
 854                                                stats->info.transferID );
 855             break;
 856         case MULTIPLE_REPORT:
 857             multiple_reports[stats->mode]( &stats->info );
 858             break;
 859         default:
 860             fprintf( stderr, "Printing type not implemented! No Output\n" );
 861     }
 862     fflush( stdout );
 863     return end;
 864 }
 865
 866 /* -------------------------------------------------------------------
 867  * Report the MSS and MTU, given the MSS (or a guess thereof)
 868  * ------------------------------------------------------------------- */
 869
 870 // compare the MSS against the (MTU - 40) to (MTU - 80) bytes.
 871 // 40 byte IP header and somewhat arbitrarily, 40 more bytes of IP options.
 872
 873 #define checkMSS_MTU( inMSS, inMTU ) (inMTU-40) >= inMSS  &&  inMSS >= (inMTU-80)
 874
 875 void PrintMSS( ReporterData *stats ) {
 876     int inMSS = getsock_tcp_mss( stats->info.transferID );
 877
 878     if ( inMSS <= 0 ) {
 879         printf( report_mss_unsupported, stats->info.transferID );
 880     } else {
 881         char* net;
 882         int mtu = 0;
 883
 884         if ( checkMSS_MTU( inMSS, 1500 ) ) {
 885             net = "ethernet";
 886             mtu = 1500;
 887         } else if ( checkMSS_MTU( inMSS, 4352 ) ) {
 888             net = "FDDI";
 889             mtu = 4352;
 890         } else if ( checkMSS_MTU( inMSS, 9180 ) ) {
 891             net = "ATM";
 892             mtu = 9180;
 893         } else if ( checkMSS_MTU( inMSS, 65280 ) ) {
 894             net = "HIPPI";
 895             mtu = 65280;
 896         } else if ( checkMSS_MTU( inMSS, 576 ) ) {
 897             net = "minimum";
 898             mtu = 576;
 899             printf( warn_no_pathmtu );
 900         } else {
 901             mtu = inMSS + 40;
 902             net = "unknown interface";
 903         }
 904
 905         printf( report_mss,
 906                 stats->info.transferID, inMSS, mtu, net );
 907     }
 908 }
 909 // end ReportMSS
 910
 911 #ifdef __cplusplus
 912 } /* end extern "C" */
 913 #endif