nsprpub/pr/tests/prselect.c

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 /***********************************************************************
   7 **  1997 - Netscape Communications Corporation
   8 **
   9 ** Name: prselect_err.c
  10 **
  11 ** Description: tests PR_Select with sockets Error condition functions.
  12 **
  13 ** Modification History:
  14 ** 14-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
  15 **           The debug mode will print all of the printfs associated with this test.
  16 **           The regress mode will be the default mode. Since the regress tool limits
  17 **           the output to a one line status:PASS or FAIL,all of the printf statements
  18 **           have been handled with an if (debug_mode) statement.
  19 ***********************************************************************/
  20
  21 /***********************************************************************
  22 ** Includes
  23 ***********************************************************************/
  24 /* Used to get the command line option */
  25 #include "plgetopt.h"
  26 #include "prttools.h"
  27
  28
  29 #include "prinit.h"
  30 #include "prio.h"
  31 #include "prlog.h"
  32 #include "prprf.h"
  33 #include "prerror.h"
  34 #include "prnetdb.h"
  35
  36 #include <stdio.h>
  37 #include <string.h>
  38 #include <stdlib.h>
  39
  40 /***********************************************************************
  41 ** PRIVATE FUNCTION:    Test_Result
  42 ** DESCRIPTION: Used in conjunction with the regress tool, prints out the
  43 **              status of the test case.
  44 ** INPUTS:      PASS/FAIL
  45 ** OUTPUTS:     None
  46 ** RETURN:      None
  47 ** SIDE EFFECTS:
  48 **
  49 ** RESTRICTIONS:
  50 **      None
  51 ** MEMORY:      NA
  52 ** ALGORITHM:   Determine what the status is and print accordingly.
  53 **
  54 ***********************************************************************/
  55
  56
  57 static Test_Result (int result)
  58 {
  59     if (result == PASS) {
  60         printf ("PASS\n");
  61     }
  62     else {
  63         printf ("FAIL\n");
  64     }
  65 }
  66
  67 static void
  68 clientThreadFunc(void *arg)
  69 {
  70     PRUint16 port = (PRUint16) arg;
  71     PRFileDesc *sock;
  72     PRNetAddr addr;
  73     char buf[128];
  74     int i;
  75
  76     addr.inet.family = AF_INET;
  77     addr.inet.port = PR_htons(port);
  78     addr.inet.ip = PR_htonl(INADDR_LOOPBACK);
  79     PR_snprintf(buf, sizeof(buf), "%hu", port);
  80
  81     for (i = 0; i < 5; i++) {
  82         sock = PR_NewTCPSocket();
  83         PR_Connect(sock, &addr, PR_INTERVAL_NO_TIMEOUT);
  84         PR_Write(sock, buf, sizeof(buf));
  85         PR_Close(sock);
  86     }
  87 }
  88
  89 int main(int argc, char **argv)
  90 {
  91     PRFileDesc *listenSock1, *listenSock2;
  92     PRFileDesc *badFD;
  93     PRFileDesc *fds0[10], *fds1[10], **fds, **other_fds;
  94     PRIntn nfds;
  95     PRUint16 listenPort1, listenPort2;
  96     PRNetAddr addr;
  97     PR_fd_set readFdSet;
  98     char buf[128];
  99     PRThread *clientThread;
 100     PRInt32 retVal;
 101     PRIntn i, j;
 102
 103     /* The command line argument: -d is used to determine if the test is being run
 104     in debug mode. The regress tool requires only one line output:PASS or FAIL.
 105     All of the printfs associated with this test has been handled with a if (debug_mode)
 106     test.
 107     Usage: test_name -d
 108     */
 109     PLOptStatus os;
 110     PLOptState *opt = PL_CreateOptState(argc, argv, "d:");
 111     while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
 112     {
 113         if (PL_OPT_BAD == os) {
 114             continue;
 115         }
 116         switch (opt->option)
 117         {
 118             case 'd':  /* debug mode */
 119                 debug_mode = 1;
 120                 break;
 121             default:
 122                 break;
 123         }
 124     }
 125     PL_DestroyOptState(opt);
 126
 127     /* main test */
 128
 129     PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
 130     PR_STDIO_INIT();
 131
 132     if (debug_mode) {
 133         printf("This program tests PR_Select with sockets.  Timeout, error\n");
 134         printf("reporting, and normal operation are tested.\n\n");
 135     }
 136
 137     /* Create two listening sockets */
 138     if ((listenSock1 = PR_NewTCPSocket()) == NULL) {
 139         fprintf(stderr, "Can't create a new TCP socket\n");
 140         if (!debug_mode) {
 141             Test_Result(FAIL);
 142         }
 143         exit(1);
 144     }
 145     addr.inet.family = AF_INET;
 146     addr.inet.ip = PR_htonl(INADDR_ANY);
 147     addr.inet.port = PR_htons(0);
 148     if (PR_Bind(listenSock1, &addr) == PR_FAILURE) {
 149         fprintf(stderr, "Can't bind socket\n");
 150         if (!debug_mode) {
 151             Test_Result(FAIL);
 152         }
 153         exit(1);
 154     }
 155     if (PR_GetSockName(listenSock1, &addr) == PR_FAILURE) {
 156         fprintf(stderr, "PR_GetSockName failed\n");
 157         if (!debug_mode) {
 158             Test_Result(FAIL);
 159         }
 160         exit(1);
 161     }
 162     listenPort1 = PR_ntohs(addr.inet.port);
 163     if (PR_Listen(listenSock1, 5) == PR_FAILURE) {
 164         fprintf(stderr, "Can't listen on a socket\n");
 165         if (!debug_mode) {
 166             Test_Result(FAIL);
 167         }
 168         exit(1);
 169     }
 170
 171     if ((listenSock2  = PR_NewTCPSocket()) == NULL) {
 172         fprintf(stderr, "Can't create a new TCP socket\n");
 173         if (!debug_mode) {
 174             Test_Result(FAIL);
 175         }
 176         exit(1);
 177     }
 178     addr.inet.family = AF_INET;
 179     addr.inet.ip = PR_htonl(INADDR_ANY);
 180     addr.inet.port = PR_htons(0);
 181     if (PR_Bind(listenSock2, &addr) == PR_FAILURE) {
 182         fprintf(stderr, "Can't bind socket\n");
 183         if (!debug_mode) {
 184             Test_Result(FAIL);
 185         }
 186         exit(1);
 187     }
 188     if (PR_GetSockName(listenSock2, &addr) == PR_FAILURE) {
 189         fprintf(stderr, "PR_GetSockName failed\n");
 190         if (!debug_mode) {
 191             Test_Result(FAIL);
 192         }
 193         exit(1);
 194     }
 195     listenPort2 = PR_ntohs(addr.inet.port);
 196     if (PR_Listen(listenSock2, 5) == PR_FAILURE) {
 197         fprintf(stderr, "Can't listen on a socket\n");
 198         if (!debug_mode) {
 199             Test_Result(FAIL);
 200         }
 201         exit(1);
 202     }
 203     PR_snprintf(buf, sizeof(buf),
 204                 "The server thread is listening on ports %hu and %hu\n\n",
 205                 listenPort1, listenPort2);
 206     printf("%s", buf);
 207
 208     /* Set up the fd set */
 209     PR_FD_ZERO(&readFdSet);
 210     PR_FD_SET(listenSock1, &readFdSet);
 211     PR_FD_SET(listenSock2, &readFdSet);
 212
 213     /* Testing timeout */
 214     if (debug_mode) {
 215         printf("PR_Select should time out in 5 seconds\n");
 216     }
 217     retVal = PR_Select(0 /* unused */, &readFdSet, NULL, NULL,
 218                        PR_SecondsToInterval(5));
 219     if (retVal != 0) {
 220         PR_snprintf(buf, sizeof(buf),
 221                     "PR_Select should time out and return 0, but it returns %ld\n",
 222                     retVal);
 223         fprintf(stderr, "%s", buf);
 224         if (retVal == -1) {
 225             fprintf(stderr, "Error %d, oserror %d\n", PR_GetError(),
 226                     PR_GetOSError());
 227             if (!debug_mode) {
 228                 Test_Result(FAIL);
 229             }
 230         }
 231         exit(1);
 232     }
 233     if (debug_mode) {
 234         printf("PR_Select timed out.  Test passed.\n\n");
 235     }
 236     else {
 237         Test_Result(PASS);
 238     }
 239
 240     /* Testing bad fd */
 241     printf("PR_Select should detect a bad file descriptor\n");
 242     if ((badFD = PR_NewTCPSocket()) == NULL) {
 243         fprintf(stderr, "Can't create a TCP socket\n");
 244         exit(1);
 245     }
 246
 247     PR_FD_SET(listenSock1, &readFdSet);
 248     PR_FD_SET(listenSock2, &readFdSet);
 249     PR_FD_SET(badFD, &readFdSet);
 250     PR_Close(badFD);  /* make the fd bad */
 251     retVal = PR_Select(0 /* unused */, &readFdSet, NULL, NULL,
 252                        PR_INTERVAL_NO_TIMEOUT);
 253     if (retVal != -1 || PR_GetError() != PR_BAD_DESCRIPTOR_ERROR) {
 254         fprintf(stderr, "Failed to detect the bad fd: "
 255                 "PR_Select returns %d\n", retVal);
 256         if (retVal == -1) {
 257             fprintf(stderr, "Error %d, oserror %d\n", PR_GetError(),
 258                     PR_GetOSError());
 259         }
 260         exit(1);
 261     }
 262     printf("PR_Select detected a bad fd.  Test passed.\n\n");
 263     PR_FD_CLR(badFD, &readFdSet);
 264
 265     clientThread = PR_CreateThread(PR_USER_THREAD,
 266                                    clientThreadFunc, (void *) listenPort1,
 267                                    PR_PRIORITY_NORMAL, PR_LOCAL_THREAD,
 268                                    PR_UNJOINABLE_THREAD, 0);
 269     if (clientThread == NULL) {
 270         fprintf(stderr, "can't create thread\n");
 271         exit(1);
 272     }
 273
 274     clientThread = PR_CreateThread(PR_USER_THREAD,
 275                                    clientThreadFunc, (void *) listenPort2,
 276                                    PR_PRIORITY_NORMAL, PR_LOCAL_THREAD,
 277                                    PR_UNJOINABLE_THREAD, 0);
 278     if (clientThread == NULL) {
 279         fprintf(stderr, "can't create thread\n");
 280         exit(1);
 281     }
 282
 283     printf("Two client threads are created.  Each of them will\n");
 284     printf("send data to one of the two ports the server is listening on.\n");
 285     printf("The data they send is the port number.  Each of them send\n");
 286     printf("the data five times, so you should see ten lines below,\n");
 287     printf("interleaved in an arbitrary order.\n");
 288
 289     /* set up the fd array */
 290     fds = fds0;
 291     other_fds = fds1;
 292     fds[0] = listenSock1;
 293     fds[1] = listenSock2;
 294     nfds = 2;
 295     PR_FD_SET(listenSock1, &readFdSet);
 296     PR_FD_SET(listenSock2, &readFdSet);
 297
 298     /* 20 events total */
 299     i = 0;
 300     while (i < 20) {
 301         PRFileDesc **tmp;
 302         int nextIndex;
 303         int nEvents = 0;
 304
 305         retVal = PR_Select(0 /* unused */, &readFdSet, NULL, NULL,
 306                            PR_INTERVAL_NO_TIMEOUT);
 307         PR_ASSERT(retVal != 0);  /* no timeout */
 308         if (retVal == -1) {
 309             fprintf(stderr, "PR_Select failed (%d, %d)\n", PR_GetError(),
 310                     PR_GetOSError());
 311             exit(1);
 312         }
 313
 314         nextIndex = 2;
 315         /* the two listening sockets */
 316         for (j = 0; j < 2; j++) {
 317             other_fds[j] = fds[j];
 318             if (PR_FD_ISSET(fds[j], &readFdSet)) {
 319                 PRFileDesc *sock;
 320
 321                 nEvents++;
 322                 sock = PR_Accept(fds[j], NULL, PR_INTERVAL_NO_TIMEOUT);
 323                 if (sock == NULL) {
 324                     fprintf(stderr, "PR_Accept() failed\n");
 325                     exit(1);
 326                 }
 327                 other_fds[nextIndex] = sock;
 328                 PR_FD_SET(sock, &readFdSet);
 329                 nextIndex++;
 330             }
 331             PR_FD_SET(fds[j], &readFdSet);
 332         }
 333
 334         for (j = 2; j < nfds; j++) {
 335             if (PR_FD_ISSET(fds[j], &readFdSet)) {
 336                 PRInt32 nBytes;
 337
 338                 PR_FD_CLR(fds[j], &readFdSet);
 339                 nEvents++;
 340                 nBytes = PR_Read(fds[j], buf, sizeof(buf));
 341                 if (nBytes == -1) {
 342                     fprintf(stderr, "PR_Read() failed\n");
 343                     exit(1);
 344                 }
 345                 /* Just to be safe */
 346                 buf[127] = '\0';
 347                 PR_Close(fds[j]);
 348                 printf("The server received \"%s\" from a client\n", buf);
 349             } else {
 350                 PR_FD_SET(fds[j], &readFdSet);
 351                 other_fds[nextIndex] = fds[j];
 352                 nextIndex++;
 353             }
 354         }
 355
 356         PR_ASSERT(retVal == nEvents);
 357         /* swap */
 358         tmp = fds;
 359         fds = other_fds;
 360         other_fds = tmp;
 361         nfds = nextIndex;
 362         i += nEvents;
 363     }
 364
 365     printf("All tests finished\n");
 366     PR_Cleanup();
 367     return 0;
 368 }