nsprpub/pr/tests/nonblock.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 #include "nspr.h"
   7 #include "prio.h"
   8 #include "prerror.h"
   9 #include "prlog.h"
  10 #include "prprf.h"
  11 #include "prnetdb.h"
  12 #include "plerror.h"
  13 #include "obsolete/probslet.h"
  14
  15 #include <stdio.h>
  16 #include <string.h>
  17 #include <stdlib.h>
  18
  19 #define NUMBER_ROUNDS 5
  20
  21 #if defined(WIN16)
  22 /*
  23 ** Make win16 unit_time interval 300 milliseconds, others get 100
  24 */
  25 #define UNIT_TIME  200       /* unit time in milliseconds */
  26 #else
  27 #define UNIT_TIME  100       /* unit time in milliseconds */
  28 #endif
  29 #define CHUNK_SIZE 10
  30 #undef USE_PR_SELECT         /* If defined, we use PR_Select.
  31                               * If not defined, use PR_Poll instead. */
  32
  33 #if defined(USE_PR_SELECT)
  34 #include "pprio.h"
  35 #endif
  36
  37 static void PR_CALLBACK
  38 clientThreadFunc(void *arg)
  39 {
  40     PRUintn port = (PRUintn)arg;
  41     PRFileDesc *sock;
  42     PRNetAddr addr;
  43     char buf[CHUNK_SIZE];
  44     int i;
  45     PRIntervalTime unitTime = PR_MillisecondsToInterval(UNIT_TIME);
  46     PRSocketOptionData optval;
  47     PRStatus retVal;
  48     PRInt32 nBytes;
  49
  50     /* Initialize the buffer so that Purify won't complain */
  51     memset(buf, 0, sizeof(buf));
  52
  53     addr.inet.family = PR_AF_INET;
  54     addr.inet.port = PR_htons((PRUint16)port);
  55     addr.inet.ip = PR_htonl(PR_INADDR_LOOPBACK);
  56     PR_snprintf(buf, sizeof(buf), "%hu", addr.inet.ip);
  57
  58     /* time 1 */
  59     PR_Sleep(unitTime);
  60     sock = PR_NewTCPSocket();
  61     optval.option = PR_SockOpt_Nonblocking;
  62     optval.value.non_blocking = PR_TRUE;
  63     PR_SetSocketOption(sock, &optval);
  64     retVal = PR_Connect(sock, &addr, PR_INTERVAL_NO_TIMEOUT);
  65     if (retVal == PR_FAILURE && PR_GetError() == PR_IN_PROGRESS_ERROR) {
  66 #if !defined(USE_PR_SELECT)
  67         PRPollDesc pd;
  68         PRInt32 n;
  69         fprintf(stderr, "connect: EWOULDBLOCK, good\n");
  70         pd.fd = sock;
  71         pd.in_flags = PR_POLL_WRITE;
  72         n = PR_Poll(&pd, 1, PR_INTERVAL_NO_TIMEOUT);
  73         PR_ASSERT(n == 1);
  74         PR_ASSERT(pd.out_flags == PR_POLL_WRITE);
  75 #else
  76         PR_fd_set writeSet;
  77         PRInt32 n;
  78         fprintf(stderr, "connect: EWOULDBLOCK, good\n");
  79         PR_FD_ZERO(&writeSet);
  80         PR_FD_SET(sock, &writeSet);
  81         n = PR_Select(0, NULL, &writeSet, NULL, PR_INTERVAL_NO_TIMEOUT);
  82         PR_ASSERT(n == 1);
  83         PR_ASSERT(PR_FD_ISSET(sock, &writeSet));
  84 #endif
  85     }
  86     printf("client connected\n");
  87     fflush(stdout);
  88
  89     /* time 4, 7, 11, etc. */
  90     for (i = 0; i < NUMBER_ROUNDS; i++) {
  91         PR_Sleep(3 * unitTime);
  92         nBytes = PR_Write(sock, buf, sizeof(buf));
  93         if (nBytes == -1) {
  94             if (PR_GetError() == PR_WOULD_BLOCK_ERROR) {
  95                 fprintf(stderr, "write: EWOULDBLOCK\n");
  96                 exit(1);
  97             } else {
  98                 fprintf(stderr, "write: failed\n");
  99             }
 100         }
 101         printf("client sent %d bytes\n", nBytes);
 102         fflush(stdout);
 103     }
 104
 105     PR_Close(sock);
 106 }
 107
 108 static PRIntn PR_CALLBACK RealMain( PRIntn argc, char **argv )
 109 {
 110     PRFileDesc *listenSock, *sock;
 111     PRUint16 listenPort;
 112     PRNetAddr addr;
 113     char buf[CHUNK_SIZE];
 114     PRThread *clientThread;
 115     PRInt32 retVal;
 116     PRSocketOptionData optval;
 117     PRIntn i;
 118     PRIntervalTime unitTime = PR_MillisecondsToInterval(UNIT_TIME);
 119
 120     /* Create a listening socket */
 121     if ((listenSock = PR_NewTCPSocket()) == NULL) {
 122         fprintf(stderr, "Can't create a new TCP socket\n");
 123         exit(1);
 124     }
 125     addr.inet.family = PR_AF_INET;
 126     addr.inet.ip = PR_htonl(PR_INADDR_ANY);
 127     addr.inet.port = PR_htons(0);
 128     if (PR_Bind(listenSock, &addr) == PR_FAILURE) {
 129         fprintf(stderr, "Can't bind socket\n");
 130         exit(1);
 131     }
 132     if (PR_GetSockName(listenSock, &addr) == PR_FAILURE) {
 133         fprintf(stderr, "PR_GetSockName failed\n");
 134         exit(1);
 135     }
 136     listenPort = PR_ntohs(addr.inet.port);
 137     if (PR_Listen(listenSock, 5) == PR_FAILURE) {
 138         fprintf(stderr, "Can't listen on a socket\n");
 139         exit(1);
 140     }
 141
 142     PR_snprintf(buf, sizeof(buf),
 143                 "The server thread is listening on port %hu\n\n",
 144                 listenPort);
 145     printf("%s", buf);
 146
 147     clientThread = PR_CreateThread(PR_USER_THREAD,
 148                                    clientThreadFunc, (void *) listenPort,
 149                                    PR_PRIORITY_NORMAL, PR_LOCAL_THREAD,
 150                                    PR_UNJOINABLE_THREAD, 0);
 151     if (clientThread == NULL) {
 152         fprintf(stderr, "can't create thread\n");
 153         exit(1);
 154     }
 155
 156     printf("client thread created.\n");
 157
 158     optval.option = PR_SockOpt_Nonblocking;
 159     optval.value.non_blocking = PR_TRUE;
 160     PR_SetSocketOption(listenSock, &optval);
 161     /* time 0 */
 162     sock = PR_Accept(listenSock, NULL, PR_INTERVAL_NO_TIMEOUT);
 163     if (sock != NULL || PR_GetError() != PR_WOULD_BLOCK_ERROR) {
 164         PL_PrintError("First Accept\n");
 165         fprintf(stderr, "First PR_Accept() xxx\n" );
 166         exit(1);
 167     }
 168     printf("accept: EWOULDBLOCK, good\n");
 169     fflush(stdout);
 170     /* time 2 */
 171     PR_Sleep(2 * unitTime);
 172     sock = PR_Accept(listenSock, NULL, PR_INTERVAL_NO_TIMEOUT);
 173     if (sock == NULL) {
 174         PL_PrintError("Second Accept\n");
 175         fprintf(stderr, "Second PR_Accept() failed: (%d, %d)\n",
 176                 PR_GetError(), PR_GetOSError());
 177         exit(1);
 178     }
 179     printf("accept: succeeded, good\n");
 180     fflush(stdout);
 181     PR_Close(listenSock);
 182
 183     PR_SetSocketOption(sock, &optval);
 184
 185     /* time 3, 5, 6, 8, etc. */
 186     for (i = 0; i < NUMBER_ROUNDS; i++) {
 187         PR_Sleep(unitTime);
 188         retVal = PR_Recv(sock, buf, sizeof(buf), 0, PR_INTERVAL_NO_TIMEOUT);
 189         if (retVal != -1 || PR_GetError() != PR_WOULD_BLOCK_ERROR) {
 190             PL_PrintError("First Receive:\n");
 191             fprintf(stderr, "First PR_Recv: retVal: %ld, Error: %ld\n",
 192                     retVal, PR_GetError());
 193             exit(1);
 194         }
 195         printf("read: EWOULDBLOCK, good\n");
 196         fflush(stdout);
 197         PR_Sleep(2 * unitTime);
 198         retVal = PR_Recv(sock, buf, sizeof(buf), 0, PR_INTERVAL_NO_TIMEOUT);
 199         if (retVal != CHUNK_SIZE) {
 200             PL_PrintError("Second Receive:\n");
 201             fprintf(stderr, "Second PR_Recv: retVal: %ld, Error: %ld\n",
 202                     retVal, PR_GetError());
 203             exit(1);
 204         }
 205         printf("read: %d bytes, good\n", retVal);
 206         fflush(stdout);
 207     }
 208     PR_Close(sock);
 209
 210     printf("All tests finished\n");
 211     printf("PASS\n");
 212     return 0;
 213 }
 214
 215 int main(int argc, char **argv)
 216 {
 217     PRIntn rv;
 218
 219     PR_STDIO_INIT();
 220     rv = PR_Initialize(RealMain, argc, argv, 0);
 221     return rv;
 222 }  /* main */
 223