apps/s_time.c

   1 /* apps/s_time.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #define NO_SHUTDOWN
  60
  61 /*-----------------------------------------
  62    s_time - SSL client connection timer program
  63    Written and donated by Larry Streepy <streepy@healthcare.com>
  64   -----------------------------------------*/
  65
  66 #include <stdio.h>
  67 #include <stdlib.h>
  68 #include <string.h>
  69
  70 #ifdef NO_STDIO
  71 #define APPS_WIN16
  72 #endif
  73 #include "x509.h"
  74 #include "ssl.h"
  75 #include "pem.h"
  76 #define USE_SOCKETS
  77 #include "apps.h"
  78 #include "s_apps.h"
  79 #include "err.h"
  80 #ifdef WIN32_STUFF
  81 #include "winmain.h"
  82 #include "wintext.h"
  83 #endif
  84
  85 #ifndef MSDOS
  86 #define TIMES
  87 #endif
  88
  89 #ifndef VMS
  90 #ifndef _IRIX
  91 #include <time.h>
  92 #endif
  93 #ifdef TIMES
  94 #include <sys/types.h>
  95 #include <sys/times.h>
  96 #endif
  97 #else /* VMS */
  98 #include <types.h>
  99 struct tms {
 100         time_t tms_utime;
 101         time_t tms_stime;
 102         time_t tms_uchild;      /* I dunno...  */
 103         time_t tms_uchildsys;   /* so these names are a guess :-) */
 104         }
 105 #endif
 106 #ifndef TIMES
 107 #include <sys/timeb.h>
 108 #endif
 109
 110 #ifdef _AIX
 111 #include <sys/select.h>
 112 #endif
 113
 114 #if defined(sun) || defined(__ultrix)
 115 #define _POSIX_SOURCE
 116 #include <limits.h>
 117 #include <sys/param.h>
 118 #endif
 119
 120 /* The following if from times(3) man page.  It may need to be changed
 121 */
 122 #ifndef HZ
 123 #ifndef CLK_TCK
 124 #ifndef VMS
 125 #define HZ      100.0
 126 #else /* VMS */
 127 #define HZ      100.0
 128 #endif
 129 #else /* CLK_TCK */
 130 #define HZ ((double)CLK_TCK)
 131 #endif
 132 #endif
 133
 134 #undef PROG
 135 #define PROG s_time_main
 136
 137 #define ioctl ioctlsocket
 138
 139 #define SSL_CONNECT_NAME        "localhost:4433"
 140
 141 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 142
 143 #undef BUFSIZZ
 144 #define BUFSIZZ 1024*10
 145
 146 #define min(a,b) (((a) < (b)) ? (a) : (b))
 147 #define max(a,b) (((a) > (b)) ? (a) : (b))
 148
 149 #undef SECONDS
 150 #define SECONDS 30
 151 extern int verify_depth;
 152 extern int verify_error;
 153
 154 #ifndef NOPROTO
 155 static void s_time_usage(void);
 156 static int parseArgs( int argc, char **argv );
 157 static SSL *doConnection( SSL *scon );
 158 static void s_time_init(void);
 159 #else
 160 static void s_time_usage();
 161 static int parseArgs();
 162 static SSL *doConnection();
 163 static void s_time_init();
 164 #endif
 165
 166
 167 /***********************************************************************
 168  * Static data declarations
 169  */
 170
 171 /* static char *port=PORT_STR;*/
 172 static char *host=SSL_CONNECT_NAME;
 173 static char *t_cert_file=NULL;
 174 static char *t_key_file=NULL;
 175 static char *CApath=NULL;
 176 static char *CAfile=NULL;
 177 static char *tm_cipher=NULL;
 178 static int tm_verify = SSL_VERIFY_NONE;
 179 static int maxTime = SECONDS;
 180 static SSL_CTX *tm_ctx=NULL;
 181 static SSL_METHOD *s_time_meth=NULL;
 182 static char *s_www_path=NULL;
 183 static long bytes_read=0;
 184 static int st_bugs=0;
 185 static int perform=0;
 186 #ifdef FIONBIO
 187 static int t_nbio=0;
 188 #endif
 189 #ifdef WIN32
 190 static int exitNow = 0;         /* Set when it's time to exit main */
 191 #endif
 192
 193 static void s_time_init(void)
 194         {
 195         host=SSL_CONNECT_NAME;
 196         t_cert_file=NULL;
 197         t_key_file=NULL;
 198         CApath=NULL;
 199         CAfile=NULL;
 200         tm_cipher=NULL;
 201         tm_verify = SSL_VERIFY_NONE;
 202         maxTime = SECONDS;
 203         tm_ctx=NULL;
 204         s_time_meth=NULL;
 205         s_www_path=NULL;
 206         bytes_read=0;
 207         st_bugs=0;
 208         perform=0;
 209
 210 #ifdef FIONBIO
 211         t_nbio=0;
 212 #endif
 213 #ifdef WIN32
 214         exitNow = 0;            /* Set when it's time to exit main */
 215 #endif
 216         }
 217
 218 /***********************************************************************
 219  * usage - display usage message
 220  */
 221 static void s_time_usage(void)
 222 {
 223         static char umsg[] = "\
 224 -time arg     - max number of seconds to collect data, default %d\n\
 225 -verify arg   - turn on peer certificate verification, arg == depth\n\
 226 -cert arg     - certificate file to use, PEM format assumed\n\
 227 -key arg      - RSA file to use, PEM format assumed, key is in cert file\n\
 228                 file if not specified by this option\n\
 229 -CApath arg   - PEM format directory of CA's\n\
 230 -CAfile arg   - PEM format file of CA's\n\
 231 -cipher       - prefered cipher to use, play with 'openssl ciphers'\n\n";
 232
 233         printf( "usage: s_time <args>\n\n" );
 234
 235         printf("-connect host:port - host:port to connect to (default is %s)\n",SSL_CONNECT_NAME);
 236 #ifdef FIONBIO
 237         printf("-nbio         - Run with non-blocking IO\n");
 238         printf("-ssl2         - Just use SSLv2\n");
 239         printf("-ssl3         - Just use SSLv3\n");
 240         printf("-bugs         - Turn on SSL bug compatability\n");
 241         printf("-new          - Just time new connections\n");
 242         printf("-reuse        - Just time connection reuse\n");
 243         printf("-www page     - Retrieve 'page' from the site\n");
 244 #endif
 245         printf( umsg,SECONDS );
 246 }
 247
 248 /***********************************************************************
 249  * parseArgs - Parse command line arguments and initialize data
 250  *
 251  * Returns 0 if ok, -1 on bad args
 252  */
 253 static int parseArgs(int argc, char **argv)
 254 {
 255     int badop = 0;
 256
 257     verify_depth=0;
 258     verify_error=X509_V_OK;
 259 #ifdef FIONBIO
 260     t_nbio=0;
 261 #endif
 262
 263         apps_startup();
 264         s_time_init();
 265
 266         if (bio_err == NULL)
 267                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 268
 269     argc--;
 270     argv++;
 271
 272     while (argc >= 1) {
 273         if (strcmp(*argv,"-connect") == 0)
 274                 {
 275                 if (--argc < 1) goto bad;
 276                 host= *(++argv);
 277                 }
 278 #if 0
 279         else if( strcmp(*argv,"-host") == 0)
 280                 {
 281                 if (--argc < 1) goto bad;
 282                 host= *(++argv);
 283                 }
 284         else if( strcmp(*argv,"-port") == 0)
 285                 {
 286                 if (--argc < 1) goto bad;
 287                 port= *(++argv);
 288                 }
 289 #endif
 290         else if (strcmp(*argv,"-reuse") == 0)
 291                 perform=2;
 292         else if (strcmp(*argv,"-new") == 0)
 293                 perform=1;
 294         else if( strcmp(*argv,"-verify") == 0) {
 295
 296             tm_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
 297             if (--argc < 1) goto bad;
 298             verify_depth=atoi(*(++argv));
 299             BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 300
 301         } else if( strcmp(*argv,"-cert") == 0) {
 302
 303             if (--argc < 1) goto bad;
 304             t_cert_file= *(++argv);
 305
 306         } else if( strcmp(*argv,"-key") == 0) {
 307
 308             if (--argc < 1) goto bad;
 309             t_key_file= *(++argv);
 310
 311         } else if( strcmp(*argv,"-CApath") == 0) {
 312
 313             if (--argc < 1) goto bad;
 314             CApath= *(++argv);
 315
 316         } else if( strcmp(*argv,"-CAfile") == 0) {
 317
 318             if (--argc < 1) goto bad;
 319             CAfile= *(++argv);
 320
 321         } else if( strcmp(*argv,"-cipher") == 0) {
 322
 323             if (--argc < 1) goto bad;
 324             tm_cipher= *(++argv);
 325         }
 326 #ifdef FIONBIO
 327         else if(strcmp(*argv,"-nbio") == 0) {
 328             t_nbio=1;
 329         }
 330 #endif
 331         else if(strcmp(*argv,"-www") == 0)
 332                 {
 333                 if (--argc < 1) goto bad;
 334                 s_www_path= *(++argv);
 335                 }
 336         else if(strcmp(*argv,"-bugs") == 0)
 337             st_bugs=1;
 338 #ifndef NO_SSL2
 339         else if(strcmp(*argv,"-ssl2") == 0)
 340             s_time_meth=SSLv2_client_method();
 341 #endif
 342 #ifndef NO_SSL3
 343         else if(strcmp(*argv,"-ssl3") == 0)
 344             s_time_meth=SSLv3_client_method();
 345 #endif
 346         else if( strcmp(*argv,"-time") == 0) {
 347
 348             if (--argc < 1) goto bad;
 349             maxTime= atoi(*(++argv));
 350         }
 351         else {
 352             BIO_printf(bio_err,"unknown option %s\n",*argv);
 353             badop=1;
 354             break;
 355         }
 356
 357         argc--;
 358         argv++;
 359     }
 360
 361     if (perform == 0) perform=3;
 362
 363     if(badop) {
 364 bad:
 365                 s_time_usage();
 366                 return -1;
 367     }
 368
 369         return 0;                       /* Valid args */
 370 }
 371
 372 /***********************************************************************
 373  * TIME - time functions
 374  */
 375 #define START   0
 376 #define STOP    1
 377
 378 static double tm_Time_F(int s)
 379         {
 380         static double ret;
 381 #ifdef TIMES
 382         static struct tms tstart,tend;
 383
 384         if(s == START) {
 385                 times(&tstart);
 386                 return(0);
 387         } else {
 388                 times(&tend);
 389                 ret=((double)(tend.tms_utime-tstart.tms_utime))/HZ;
 390                 return((ret == 0.0)?1e-6:ret);
 391         }
 392 #else /* !times() */
 393         static struct timeb tstart,tend;
 394         long i;
 395
 396         if(s == START) {
 397                 ftime(&tstart);
 398                 return(0);
 399         } else {
 400                 ftime(&tend);
 401                 i=(long)tend.millitm-(long)tstart.millitm;
 402                 ret=((double)(tend.time-tstart.time))+((double)i)/1000.0;
 403                 return((ret == 0.0)?1e-6:ret);
 404         }
 405 #endif
 406 }
 407
 408 /***********************************************************************
 409  * MAIN - main processing area for client
 410  *                      real name depends on MONOLITH
 411  */
 412 int MAIN(int argc, char **argv)
 413         {
 414         double totalTime = 0.0;
 415         int nConn = 0;
 416         SSL *scon=NULL;
 417         long finishtime=0;
 418         int ret=1,i;
 419         MS_STATIC char buf[1024*8];
 420         int ver;
 421
 422 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 423         s_time_meth=SSLv23_client_method();
 424 #elif !defined(NO_SSL3)
 425         s_time_meth=SSLv3_client_method();
 426 #elif !defined(NO_SSL2)
 427         s_time_meth=SSLv2_client_method();
 428 #endif
 429
 430         /* parse the command line arguments */
 431         if( parseArgs( argc, argv ) < 0 )
 432                 goto end;
 433
 434         SSLeay_add_ssl_algorithms();
 435         if ((tm_ctx=SSL_CTX_new(s_time_meth)) == NULL) return(1);
 436
 437         SSL_CTX_set_quiet_shutdown(tm_ctx,1);
 438
 439         if (st_bugs) SSL_CTX_set_options(tm_ctx,SSL_OP_ALL);
 440         SSL_CTX_set_cipher_list(tm_ctx,tm_cipher);
 441         if(!set_cert_stuff(tm_ctx,t_cert_file,t_key_file))
 442                 goto end;
 443
 444         SSL_load_error_strings();
 445
 446         if ((!SSL_CTX_load_verify_locations(tm_ctx,CAfile,CApath)) ||
 447                 (!SSL_CTX_set_default_verify_paths(tm_ctx)))
 448                 {
 449                 /* BIO_printf(bio_err,"error seting default verify locations\n"); */
 450                 ERR_print_errors(bio_err);
 451                 /* goto end; */
 452                 }
 453
 454         if (tm_cipher == NULL)
 455                 tm_cipher = getenv("SSL_CIPHER");
 456
 457         if (tm_cipher == NULL ) {
 458                 fprintf( stderr, "No CIPHER specified\n" );
 459 /*              EXIT(1); */
 460         }
 461
 462         if (!(perform & 1)) goto next;
 463         printf( "Collecting connection statistics for %d seconds\n", maxTime );
 464
 465         /* Loop and time how long it takes to make connections */
 466
 467         bytes_read=0;
 468         finishtime=(long)time(NULL)+maxTime;
 469         tm_Time_F(START);
 470         for (;;)
 471                 {
 472                 if (finishtime < time(NULL)) break;
 473 #ifdef WIN32_STUFF
 474
 475                 if( flushWinMsgs(0) == -1 )
 476                         goto end;
 477
 478                 if( waitingToDie || exitNow )           /* we're dead */
 479                         goto end;
 480 #endif
 481
 482                 if( (scon = doConnection( NULL )) == NULL )
 483                         goto end;
 484
 485                 if (s_www_path != NULL)
 486                         {
 487                         sprintf(buf,"GET %s HTTP/1.0\r\n\r\n",s_www_path);
 488                         SSL_write(scon,buf,strlen(buf));
 489                         while ((i=SSL_read(scon,buf,sizeof(buf))) > 0)
 490                                 bytes_read+=i;
 491                         }
 492
 493 #ifdef NO_SHUTDOWN
 494                 SSL_set_shutdown(scon,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 495 #else
 496                 SSL_shutdown(scon);
 497 #endif
 498                 SHUTDOWN2(SSL_get_fd(scon));
 499
 500                 nConn += 1;
 501                 if (SSL_session_reused(scon))
 502                         ver='r';
 503                 else
 504                         {
 505                         ver=SSL_version(scon);
 506                         if (ver == TLS1_VERSION)
 507                                 ver='t';
 508                         else if (ver == SSL3_VERSION)
 509                                 ver='3';
 510                         else if (ver == SSL2_VERSION)
 511                                 ver='2';
 512                         else
 513                                 ver='*';
 514                         }
 515                 fputc(ver,stdout);
 516                 fflush(stdout);
 517
 518                 SSL_free( scon );
 519                 scon=NULL;
 520                 }
 521         totalTime += tm_Time_F(STOP); /* Add the time for this iteration */
 522
 523         i=(int)(time(NULL)-finishtime+maxTime);
 524         printf( "\n\n%d connections in %.2fs; %.2f connections/user sec, bytes read %ld\n", nConn, totalTime, ((double)nConn/totalTime),bytes_read);
 525         printf( "%d connections in %ld real seconds, %ld bytes read per connection\n",nConn,time(NULL)-finishtime+maxTime,bytes_read/nConn);
 526
 527         /* Now loop and time connections using the same session id over and over */
 528
 529 next:
 530         if (!(perform & 2)) goto end;
 531         printf( "\n\nNow timing with session id reuse.\n" );
 532
 533         /* Get an SSL object so we can reuse the session id */
 534         if( (scon = doConnection( NULL )) == NULL )
 535                 {
 536                 fprintf( stderr, "Unable to get connection\n" );
 537                 goto end;
 538                 }
 539
 540         if (s_www_path != NULL)
 541                 {
 542                 sprintf(buf,"GET %s HTTP/1.0\r\n\r\n",s_www_path);
 543                 SSL_write(scon,buf,strlen(buf));
 544                 while (SSL_read(scon,buf,sizeof(buf)) > 0)
 545                         ;
 546                 }
 547 #ifdef NO_SHUTDOWN
 548         SSL_set_shutdown(scon,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 549 #else
 550         SSL_shutdown(scon);
 551 #endif
 552         SHUTDOWN2(SSL_get_fd(scon));
 553
 554         nConn = 0;
 555         totalTime = 0.0;
 556
 557         finishtime=time(NULL)+maxTime;
 558
 559         printf( "starting\n" );
 560         bytes_read=0;
 561         tm_Time_F(START);
 562
 563         for (;;)
 564                 {
 565                 if (finishtime < time(NULL)) break;
 566
 567 #ifdef WIN32_STUFF
 568                 if( flushWinMsgs(0) == -1 )
 569                         goto end;
 570
 571                 if( waitingToDie || exitNow )   /* we're dead */
 572                         goto end;
 573 #endif
 574
 575                 if( (doConnection( scon )) == NULL )
 576                         goto end;
 577
 578                 if (s_www_path)
 579                         {
 580                         sprintf(buf,"GET %s HTTP/1.0\r\n\r\n",s_www_path);
 581                         SSL_write(scon,buf,strlen(buf));
 582                         while ((i=SSL_read(scon,buf,sizeof(buf))) > 0)
 583                                 bytes_read+=i;
 584                         }
 585
 586 #ifdef NO_SHUTDOWN
 587                 SSL_set_shutdown(scon,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 588 #else
 589                 SSL_shutdown(scon);
 590 #endif
 591                 SHUTDOWN2(SSL_get_fd(scon));
 592
 593                 nConn += 1;
 594                 if (SSL_session_reused(scon))
 595                         ver='r';
 596                 else
 597                         {
 598                         ver=SSL_version(scon);
 599                         if (ver == TLS1_VERSION)
 600                                 ver='t';
 601                         else if (ver == SSL3_VERSION)
 602                                 ver='3';
 603                         else if (ver == SSL2_VERSION)
 604                                 ver='2';
 605                         else
 606                                 ver='*';
 607                         }
 608                 fputc(ver,stdout);
 609                 fflush(stdout);
 610                 }
 611         totalTime += tm_Time_F(STOP); /* Add the time for this iteration*/
 612
 613
 614         printf( "\n\n%d connections in %.2fs; %.2f connections/user sec, bytes read %ld\n", nConn, totalTime, ((double)nConn/totalTime),bytes_read);
 615         printf( "%d connections in %ld real seconds, %ld bytes read per connection\n",nConn,time(NULL)-finishtime+maxTime,bytes_read/nConn);
 616
 617         ret=0;
 618 end:
 619         if (scon != NULL) SSL_free(scon);
 620
 621         if (tm_ctx != NULL)
 622                 {
 623                 SSL_CTX_free(tm_ctx);
 624                 tm_ctx=NULL;
 625                 }
 626         EXIT(ret);
 627         }
 628
 629 /***********************************************************************
 630  * doConnection - make a connection
 631  * Args:
 632  *              scon    = earlier ssl connection for session id, or NULL
 633  * Returns:
 634  *              SSL *   = the connection pointer.
 635  */
 636 static SSL *doConnection(SSL *scon)
 637         {
 638         BIO *conn;
 639         SSL *serverCon;
 640         int width, i;
 641         fd_set readfds;
 642
 643         if ((conn=BIO_new(BIO_s_connect())) == NULL)
 644                 return(NULL);
 645
 646 /*      BIO_set_conn_port(conn,port);*/
 647         BIO_set_conn_hostname(conn,host);
 648
 649         if (scon == NULL)
 650                 serverCon=(SSL *)SSL_new(tm_ctx);
 651         else
 652                 {
 653                 serverCon=scon;
 654                 SSL_set_connect_state(serverCon);
 655                 }
 656
 657         SSL_set_bio(serverCon,conn,conn);
 658
 659 #if 0
 660         if( scon != NULL )
 661                 SSL_set_session(serverCon,SSL_get_session(scon));
 662 #endif
 663
 664         /* ok, lets connect */
 665         for(;;) {
 666                 i=SSL_connect(serverCon);
 667                 if (BIO_sock_should_retry(i))
 668                         {
 669                         BIO_printf(bio_err,"DELAY\n");
 670
 671                         i=SSL_get_fd(serverCon);
 672                         width=i+1;
 673                         FD_ZERO(&readfds);
 674                         FD_SET(i,&readfds);
 675                         select(width,&readfds,NULL,NULL,NULL);
 676                         continue;
 677                         }
 678                 break;
 679                 }
 680         if(i <= 0)
 681                 {
 682                 BIO_printf(bio_err,"ERROR\n");
 683                 if (verify_error != X509_V_OK)
 684                         BIO_printf(bio_err,"verify error:%s\n",
 685                                 X509_verify_cert_error_string(verify_error));
 686                 else
 687                         ERR_print_errors(bio_err);
 688                 if (scon == NULL)
 689                         SSL_free(serverCon);
 690                 return NULL;
 691                 }
 692
 693         return serverCon;
 694         }
 695
 696