The Tor Browser: nsprpub/pr/tests/sockpong.c@7e26c7da4463

     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/. */

     6 /*

     7  * File: sockpong.c

     8  *

     9  * Description:

    10  * This test runs in conjunction with the sockping test.

    11  * The sockping test creates a socket pair and passes one

    12  * socket to this test.  Then the sockping test writes

    13  * "ping" to this test and this test writes "pong" back.

    14  * To run this pair of tests, just invoke sockping.

    15  *

    16  * Tested areas: process creation, socket pairs, file

    17  * descriptor inheritance.

    18  */

    20 #include "prerror.h"

    21 #include "prio.h"

    23 #include <stdio.h>

    24 #include <string.h>

    25 #include <stdlib.h>

    27 #define NUM_ITERATIONS 10

    29 int main(int argc, char **argv)

    30 {

    31     PRFileDesc *sock;

    32     PRStatus status;

    33     char buf[1024];

    34     PRInt32 nBytes;

    35     int idx;

    37     sock = PR_GetInheritedFD("SOCKET");

    38     if (sock == NULL) {

    39         fprintf(stderr, "PR_GetInheritedFD failed\n");

    40         exit(1);

    41     }

    42     status = PR_SetFDInheritable(sock, PR_FALSE);

    43     if (status == PR_FAILURE) {

    44         fprintf(stderr, "PR_SetFDInheritable failed\n");

    45         exit(1);

    46     }

    48     for (idx = 0; idx < NUM_ITERATIONS; idx++) {

    49         memset(buf, 0, sizeof(buf));

    50         nBytes = PR_Read(sock, buf, sizeof(buf));

    51         if (nBytes == -1) {

    52             fprintf(stderr, "PR_Read failed: (%d, %d)\n",

    53                     PR_GetError(), PR_GetOSError());

    54             exit(1);

    55         }

    56         printf("pong process: received \"%s\"\n", buf);

    57         if (nBytes != 5) {

    58             fprintf(stderr, "pong process: expected 5 bytes but got %d bytes\n",

    59                     nBytes);

    60             exit(1);

    61         }

    62         if (strcmp(buf, "ping") != 0) {

    63             fprintf(stderr, "pong process: expected \"ping\" but got \"%s\"\n",

    64                     buf);

    65             exit(1);

    66         }

    68         strcpy(buf, "pong");

    69         printf("pong process: sending \"%s\"\n", buf);

    70         nBytes = PR_Write(sock, buf, 5);

    71         if (nBytes == -1) {

    72             fprintf(stderr, "PR_Write failed\n");

    73             exit(1);

    74         }

    75     }

    77     status = PR_Close(sock);

    78     if (status == PR_FAILURE) {

    79         fprintf(stderr, "PR_Close failed\n");

    80         exit(1);

    81     }

    82     return 0;

    83 }

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