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 #define USE_SOCKETS
  74 #include <openssl/x509.h>
  75 #include <openssl/ssl.h>
  76 #include <openssl/pem.h>
  77 #include "apps.h"
  78 #include "s_apps.h"
  79 #include <openssl/err.h>
  80 #ifdef WIN32_STUFF
  81 #include "winmain.h"
  82 #include "wintext.h"
  83 #endif
  84
  85 #if !defined(MSDOS) && (!defined(VMS) || defined(__DECC))
  86 #define TIMES
  87 #endif
  88
  89 #ifndef _IRIX
  90 #include <time.h>
  91 #endif
  92 #ifdef TIMES
  93 #include <sys/types.h>
  94 #include <sys/times.h>
  95 #endif
  96
  97 /* Depending on the VMS version, the tms structure is perhaps defined.
  98    The __TMS macro will show if it was.  If it wasn't defined, we should
  99    undefine TIMES, since that tells the rest of the program how things
 100    should be handled.                           -- Richard Levitte */
 101 #if defined(VMS) && defined(__DECC) && !defined(__TMS)
 102 #undef TIMES
 103 #endif
 104
 105 #ifndef TIMES
 106 #include <sys/timeb.h>
 107 #endif
 108
 109 #ifdef _AIX
 110 #include <sys/select.h>
 111 #endif
 112
 113 #if defined(sun) || defined(__ultrix)
 114 #define _POSIX_SOURCE
 115 #include <limits.h>
 116 #include <sys/param.h>
 117 #endif
 118
 119 /* The following if from times(3) man page.  It may need to be changed
 120 */
 121 #ifndef HZ
 122 #ifndef CLK_TCK
 123 #define HZ      100.0
 124 #else /* CLK_TCK */
 125 #define HZ ((double)CLK_TCK)
 126 #endif
 127 #endif
 128
 129 #undef PROG
 130 #define PROG s_time_main
 131
 132 #undef ioctl
 133 #define ioctl ioctlsocket
 134
 135 #define SSL_CONNECT_NAME        "localhost:4433"
 136
 137 /*#define TEST_CERT "client.pem" */ /* no default cert. */
 138
 139 #undef BUFSIZZ
 140 #define BUFSIZZ 1024*10
 141
 142 #define min(a,b) (((a) < (b)) ? (a) : (b))
 143 #define max(a,b) (((a) > (b)) ? (a) : (b))
 144
 145 #undef SECONDS
 146 #define SECONDS 30
 147 extern int verify_depth;
 148 extern int verify_error;
 149
 150 static void s_time_usage(void);
 151 static int parseArgs( int argc, char **argv );
 152 static SSL *doConnection( SSL *scon );
 153 static void s_time_init(void);
 154
 155 /***********************************************************************
 156  * Static data declarations
 157  */
 158
 159 /* static char *port=PORT_STR;*/
 160 static char *host=SSL_CONNECT_NAME;
 161 static char *t_cert_file=NULL;
 162 static char *t_key_file=NULL;
 163 static char *CApath=NULL;
 164 static char *CAfile=NULL;
 165 static char *tm_cipher=NULL;
 166 static int tm_verify = SSL_VERIFY_NONE;
 167 static int maxTime = SECONDS;
 168 static SSL_CTX *tm_ctx=NULL;
 169 static SSL_METHOD *s_time_meth=NULL;
 170 static char *s_www_path=NULL;
 171 static long bytes_read=0;
 172 static int st_bugs=0;
 173 static int perform=0;
 174 #ifdef FIONBIO
 175 static int t_nbio=0;
 176 #endif
 177 #ifdef WIN32
 178 static int exitNow = 0;         /* Set when it's time to exit main */
 179 #endif
 180
 181 static void s_time_init(void)
 182         {
 183         host=SSL_CONNECT_NAME;
 184         t_cert_file=NULL;
 185         t_key_file=NULL;
 186         CApath=NULL;
 187         CAfile=NULL;
 188         tm_cipher=NULL;
 189         tm_verify = SSL_VERIFY_NONE;
 190         maxTime = SECONDS;
 191         tm_ctx=NULL;
 192         s_time_meth=NULL;
 193         s_www_path=NULL;
 194         bytes_read=0;
 195         st_bugs=0;
 196         perform=0;
 197
 198 #ifdef FIONBIO
 199         t_nbio=0;
 200 #endif
 201 #ifdef WIN32
 202         exitNow = 0;            /* Set when it's time to exit main */
 203 #endif
 204         }
 205
 206 /***********************************************************************
 207  * usage - display usage message
 208  */
 209 static void s_time_usage(void)
 210 {
 211         static char umsg[] = "\
 212 -time arg     - max number of seconds to collect data, default %d\n\
 213 -verify arg   - turn on peer certificate verification, arg == depth\n\
 214 -cert arg     - certificate file to use, PEM format assumed\n\
 215 -key arg      - RSA file to use, PEM format assumed, key is in cert file\n\
 216                 file if not specified by this option\n\
 217 -CApath arg   - PEM format directory of CA's\n\
 218 -CAfile arg   - PEM format file of CA's\n\
 219 -cipher       - prefered cipher to use, play with 'openssl ciphers'\n\n";
 220
 221         printf( "usage: s_time <args>\n\n" );
 222
 223         printf("-connect host:port - host:port to connect to (default is %s)\n",SSL_CONNECT_NAME);
 224 #ifdef FIONBIO
 225         printf("-nbio         - Run with non-blocking IO\n");
 226         printf("-ssl2         - Just use SSLv2\n");
 227         printf("-ssl3         - Just use SSLv3\n");
 228         printf("-bugs         - Turn on SSL bug compatability\n");
 229         printf("-new          - Just time new connections\n");
 230         printf("-reuse        - Just time connection reuse\n");
 231         printf("-www page     - Retrieve 'page' from the site\n");
 232 #endif
 233         printf( umsg,SECONDS );
 234 }
 235
 236 /***********************************************************************
 237  * parseArgs - Parse command line arguments and initialize data
 238  *
 239  * Returns 0 if ok, -1 on bad args
 240  */
 241 static int parseArgs(int argc, char **argv)
 242 {
 243     int badop = 0;
 244
 245     verify_depth=0;
 246     verify_error=X509_V_OK;
 247
 248     argc--;
 249     argv++;
 250
 251     while (argc >= 1) {
 252         if (strcmp(*argv,"-connect") == 0)
 253                 {
 254                 if (--argc < 1) goto bad;
 255                 host= *(++argv);
 256                 }
 257 #if 0
 258         else if( strcmp(*argv,"-host") == 0)
 259                 {
 260                 if (--argc < 1) goto bad;
 261                 host= *(++argv);
 262                 }
 263         else if( strcmp(*argv,"-port") == 0)
 264                 {
 265                 if (--argc < 1) goto bad;
 266                 port= *(++argv);
 267                 }
 268 #endif
 269         else if (strcmp(*argv,"-reuse") == 0)
 270                 perform=2;
 271         else if (strcmp(*argv,"-new") == 0)
 272                 perform=1;
 273         else if( strcmp(*argv,"-verify") == 0) {
 274
 275             tm_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
 276             if (--argc < 1) goto bad;
 277             verify_depth=atoi(*(++argv));
 278             BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 279
 280         } else if( strcmp(*argv,"-cert") == 0) {
 281
 282             if (--argc < 1) goto bad;
 283             t_cert_file= *(++argv);
 284
 285         } else if( strcmp(*argv,"-key") == 0) {
 286
 287             if (--argc < 1) goto bad;
 288             t_key_file= *(++argv);
 289
 290         } else if( strcmp(*argv,"-CApath") == 0) {
 291
 292             if (--argc < 1) goto bad;
 293             CApath= *(++argv);
 294
 295         } else if( strcmp(*argv,"-CAfile") == 0) {
 296
 297             if (--argc < 1) goto bad;
 298             CAfile= *(++argv);
 299
 300         } else if( strcmp(*argv,"-cipher") == 0) {
 301
 302             if (--argc < 1) goto bad;
 303             tm_cipher= *(++argv);
 304         }
 305 #ifdef FIONBIO
 306         else if(strcmp(*argv,"-nbio") == 0) {
 307             t_nbio=1;
 308         }
 309 #endif
 310         else if(strcmp(*argv,"-www") == 0)
 311                 {
 312                 if (--argc < 1) goto bad;
 313                 s_www_path= *(++argv);
 314                 }
 315         else if(strcmp(*argv,"-bugs") == 0)
 316             st_bugs=1;
 317 #ifndef NO_SSL2
 318         else if(strcmp(*argv,"-ssl2") == 0)
 319             s_time_meth=SSLv2_client_method();
 320 #endif
 321 #ifndef NO_SSL3
 322         else if(strcmp(*argv,"-ssl3") == 0)
 323             s_time_meth=SSLv3_client_method();
 324 #endif
 325         else if( strcmp(*argv,"-time") == 0) {
 326
 327             if (--argc < 1) goto bad;
 328             maxTime= atoi(*(++argv));
 329         }
 330         else {
 331             BIO_printf(bio_err,"unknown option %s\n",*argv);
 332             badop=1;
 333             break;
 334         }
 335
 336         argc--;
 337         argv++;
 338     }
 339
 340     if (perform == 0) perform=3;
 341
 342     if(badop) {
 343 bad:
 344                 s_time_usage();
 345                 return -1;
 346     }
 347
 348         return 0;                       /* Valid args */
 349 }
 350
 351 /***********************************************************************
 352  * TIME - time functions
 353  */
 354 #define START   0
 355 #define STOP    1
 356
 357 static double tm_Time_F(int s)
 358         {
 359         static double ret;
 360 #ifdef TIMES
 361         static struct tms tstart,tend;
 362
 363         if(s == START) {
 364                 times(&tstart);
 365                 return(0);
 366         } else {
 367                 times(&tend);
 368                 ret=((double)(tend.tms_utime-tstart.tms_utime))/HZ;
 369                 return((ret == 0.0)?1e-6:ret);
 370         }
 371 #else /* !times() */
 372         static struct timeb tstart,tend;
 373         long i;
 374
 375         if(s == START) {
 376                 ftime(&tstart);
 377                 return(0);
 378         } else {
 379                 ftime(&tend);
 380                 i=(long)tend.millitm-(long)tstart.millitm;
 381                 ret=((double)(tend.time-tstart.time))+((double)i)/1000.0;
 382                 return((ret == 0.0)?1e-6:ret);
 383         }
 384 #endif
 385 }
 386
 387 /***********************************************************************
 388  * MAIN - main processing area for client
 389  *                      real name depends on MONOLITH
 390  */
 391 int MAIN(int argc, char **argv)
 392         {
 393         double totalTime = 0.0;
 394         int nConn = 0;
 395         SSL *scon=NULL;
 396         long finishtime=0;
 397         int ret=1,i;
 398         MS_STATIC char buf[1024*8];
 399         int ver;
 400
 401         apps_startup();
 402         s_time_init();
 403
 404         if (bio_err == NULL)
 405                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 406
 407 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 408         s_time_meth=SSLv23_client_method();
 409 #elif !defined(NO_SSL3)
 410         s_time_meth=SSLv3_client_method();
 411 #elif !defined(NO_SSL2)
 412         s_time_meth=SSLv2_client_method();
 413 #endif
 414
 415         /* parse the command line arguments */
 416         if( parseArgs( argc, argv ) < 0 )
 417                 goto end;
 418
 419         SSLeay_add_ssl_algorithms();
 420         if ((tm_ctx=SSL_CTX_new(s_time_meth)) == NULL) return(1);
 421
 422         SSL_CTX_set_quiet_shutdown(tm_ctx,1);
 423
 424         if (st_bugs) SSL_CTX_set_options(tm_ctx,SSL_OP_ALL);
 425         SSL_CTX_set_cipher_list(tm_ctx,tm_cipher);
 426         if(!set_cert_stuff(tm_ctx,t_cert_file,t_key_file))
 427                 goto end;
 428
 429         SSL_load_error_strings();
 430
 431         if ((!SSL_CTX_load_verify_locations(tm_ctx,CAfile,CApath)) ||
 432                 (!SSL_CTX_set_default_verify_paths(tm_ctx)))
 433                 {
 434                 /* BIO_printf(bio_err,"error seting default verify locations\n"); */
 435                 ERR_print_errors(bio_err);
 436                 /* goto end; */
 437                 }
 438
 439         if (tm_cipher == NULL)
 440                 tm_cipher = getenv("SSL_CIPHER");
 441
 442         if (tm_cipher == NULL ) {
 443                 fprintf( stderr, "No CIPHER specified\n" );
 444 /*              EXIT(1); */
 445         }
 446
 447         if (!(perform & 1)) goto next;
 448         printf( "Collecting connection statistics for %d seconds\n", maxTime );
 449
 450         /* Loop and time how long it takes to make connections */
 451
 452         bytes_read=0;
 453         finishtime=(long)time(NULL)+maxTime;
 454         tm_Time_F(START);
 455         for (;;)
 456                 {
 457                 if (finishtime < time(NULL)) break;
 458 #ifdef WIN32_STUFF
 459
 460                 if( flushWinMsgs(0) == -1 )
 461                         goto end;
 462
 463                 if( waitingToDie || exitNow )           /* we're dead */
 464                         goto end;
 465 #endif
 466
 467                 if( (scon = doConnection( NULL )) == NULL )
 468                         goto end;
 469
 470                 if (s_www_path != NULL)
 471                         {
 472                         sprintf(buf,"GET %s HTTP/1.0\r\n\r\n",s_www_path);
 473                         SSL_write(scon,buf,strlen(buf));
 474                         while ((i=SSL_read(scon,buf,sizeof(buf))) > 0)
 475                                 bytes_read+=i;
 476                         }
 477
 478 #ifdef NO_SHUTDOWN
 479                 SSL_set_shutdown(scon,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 480 #else
 481                 SSL_shutdown(scon);
 482 #endif
 483                 SHUTDOWN2(SSL_get_fd(scon));
 484
 485                 nConn += 1;
 486                 if (SSL_session_reused(scon))
 487                         ver='r';
 488                 else
 489                         {
 490                         ver=SSL_version(scon);
 491                         if (ver == TLS1_VERSION)
 492                                 ver='t';
 493                         else if (ver == SSL3_VERSION)
 494                                 ver='3';
 495                         else if (ver == SSL2_VERSION)
 496                                 ver='2';
 497                         else
 498                                 ver='*';
 499                         }
 500                 fputc(ver,stdout);
 501                 fflush(stdout);
 502
 503                 SSL_free( scon );
 504                 scon=NULL;
 505                 }
 506         totalTime += tm_Time_F(STOP); /* Add the time for this iteration */
 507
 508         i=(int)(time(NULL)-finishtime+maxTime);
 509         printf( "\n\n%d connections in %.2fs; %.2f connections/user sec, bytes read %ld\n", nConn, totalTime, ((double)nConn/totalTime),bytes_read);
 510         printf( "%d connections in %ld real seconds, %ld bytes read per connection\n",nConn,time(NULL)-finishtime+maxTime,bytes_read/nConn);
 511
 512         /* Now loop and time connections using the same session id over and over */
 513
 514 next:
 515         if (!(perform & 2)) goto end;
 516         printf( "\n\nNow timing with session id reuse.\n" );
 517
 518         /* Get an SSL object so we can reuse the session id */
 519         if( (scon = doConnection( NULL )) == NULL )
 520                 {
 521                 fprintf( stderr, "Unable to get connection\n" );
 522                 goto end;
 523                 }
 524
 525         if (s_www_path != NULL)
 526                 {
 527                 sprintf(buf,"GET %s HTTP/1.0\r\n\r\n",s_www_path);
 528                 SSL_write(scon,buf,strlen(buf));
 529                 while (SSL_read(scon,buf,sizeof(buf)) > 0)
 530                         ;
 531                 }
 532 #ifdef NO_SHUTDOWN
 533         SSL_set_shutdown(scon,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 534 #else
 535         SSL_shutdown(scon);
 536 #endif
 537         SHUTDOWN2(SSL_get_fd(scon));
 538
 539         nConn = 0;
 540         totalTime = 0.0;
 541
 542         finishtime=time(NULL)+maxTime;
 543
 544         printf( "starting\n" );
 545         bytes_read=0;
 546         tm_Time_F(START);
 547
 548         for (;;)
 549                 {
 550                 if (finishtime < time(NULL)) break;
 551
 552 #ifdef WIN32_STUFF
 553                 if( flushWinMsgs(0) == -1 )
 554                         goto end;
 555
 556                 if( waitingToDie || exitNow )   /* we're dead */
 557                         goto end;
 558 #endif
 559
 560                 if( (doConnection( scon )) == NULL )
 561                         goto end;
 562
 563                 if (s_www_path)
 564                         {
 565                         sprintf(buf,"GET %s HTTP/1.0\r\n\r\n",s_www_path);
 566                         SSL_write(scon,buf,strlen(buf));
 567                         while ((i=SSL_read(scon,buf,sizeof(buf))) > 0)
 568                                 bytes_read+=i;
 569                         }
 570
 571 #ifdef NO_SHUTDOWN
 572                 SSL_set_shutdown(scon,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 573 #else
 574                 SSL_shutdown(scon);
 575 #endif
 576                 SHUTDOWN2(SSL_get_fd(scon));
 577
 578                 nConn += 1;
 579                 if (SSL_session_reused(scon))
 580                         ver='r';
 581                 else
 582                         {
 583                         ver=SSL_version(scon);
 584                         if (ver == TLS1_VERSION)
 585                                 ver='t';
 586                         else if (ver == SSL3_VERSION)
 587                                 ver='3';
 588                         else if (ver == SSL2_VERSION)
 589                                 ver='2';
 590                         else
 591                                 ver='*';
 592                         }
 593                 fputc(ver,stdout);
 594                 fflush(stdout);
 595                 }
 596         totalTime += tm_Time_F(STOP); /* Add the time for this iteration*/
 597
 598
 599         printf( "\n\n%d connections in %.2fs; %.2f connections/user sec, bytes read %ld\n", nConn, totalTime, ((double)nConn/totalTime),bytes_read);
 600         printf( "%d connections in %ld real seconds, %ld bytes read per connection\n",nConn,time(NULL)-finishtime+maxTime,bytes_read/nConn);
 601
 602         ret=0;
 603 end:
 604         if (scon != NULL) SSL_free(scon);
 605
 606         if (tm_ctx != NULL)
 607                 {
 608                 SSL_CTX_free(tm_ctx);
 609                 tm_ctx=NULL;
 610                 }
 611         EXIT(ret);
 612         }
 613
 614 /***********************************************************************
 615  * doConnection - make a connection
 616  * Args:
 617  *              scon    = earlier ssl connection for session id, or NULL
 618  * Returns:
 619  *              SSL *   = the connection pointer.
 620  */
 621 static SSL *doConnection(SSL *scon)
 622         {
 623         BIO *conn;
 624         SSL *serverCon;
 625         int width, i;
 626         fd_set readfds;
 627
 628         if ((conn=BIO_new(BIO_s_connect())) == NULL)
 629                 return(NULL);
 630
 631 /*      BIO_set_conn_port(conn,port);*/
 632         BIO_set_conn_hostname(conn,host);
 633
 634         if (scon == NULL)
 635                 serverCon=(SSL *)SSL_new(tm_ctx);
 636         else
 637                 {
 638                 serverCon=scon;
 639                 SSL_set_connect_state(serverCon);
 640                 }
 641
 642         SSL_set_bio(serverCon,conn,conn);
 643
 644 #if 0
 645         if( scon != NULL )
 646                 SSL_set_session(serverCon,SSL_get_session(scon));
 647 #endif
 648
 649         /* ok, lets connect */
 650         for(;;) {
 651                 i=SSL_connect(serverCon);
 652                 if (BIO_sock_should_retry(i))
 653                         {
 654                         BIO_printf(bio_err,"DELAY\n");
 655
 656                         i=SSL_get_fd(serverCon);
 657                         width=i+1;
 658                         FD_ZERO(&readfds);
 659                         FD_SET(i,&readfds);
 660                         /* Note: under VMS with SOCKETSHR the 2nd parameter
 661                          * is currently of type (int *) whereas under other
 662                          * systems it is (void *) if you don't have a cast it
 663                          * will choke the compiler: if you do have a cast then
 664                          * you can either go for (int *) or (void *).
 665                          */
 666                         select(width,(void *)&readfds,NULL,NULL,NULL);
 667                         continue;
 668                         }
 669                 break;
 670                 }
 671         if(i <= 0)
 672                 {
 673                 BIO_printf(bio_err,"ERROR\n");
 674                 if (verify_error != X509_V_OK)
 675                         BIO_printf(bio_err,"verify error:%s\n",
 676                                 X509_verify_cert_error_string(verify_error));
 677                 else
 678                         ERR_print_errors(bio_err);
 679                 if (scon == NULL)
 680                         SSL_free(serverCon);
 681                 return NULL;
 682                 }
 683
 684         return serverCon;
 685         }
 686
 687