| 1 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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| 2 | /* ***** BEGIN LICENSE BLOCK *****
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| 3 | * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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| 4 | *
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| 5 | * The contents of this file are subject to the Mozilla Public License Version
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| 6 | * 1.1 (the "License"); you may not use this file except in compliance with
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| 7 | * the License. You may obtain a copy of the License at
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| 8 | * http://www.mozilla.org/MPL/
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| 9 | *
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| 10 | * Software distributed under the License is distributed on an "AS IS" basis,
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| 11 | * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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| 12 | * for the specific language governing rights and limitations under the
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| 13 | * License.
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| 14 | *
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| 15 | * The Original Code is the Netscape Portable Runtime (NSPR).
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| 16 | *
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| 17 | * The Initial Developer of the Original Code is
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| 18 | * Netscape Communications Corporation.
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| 19 | * Portions created by the Initial Developer are Copyright (C) 1998-2000
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| 20 | * the Initial Developer. All Rights Reserved.
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| 21 | *
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| 22 | * Contributor(s):
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| 23 | *
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| 24 | * Alternatively, the contents of this file may be used under the terms of
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| 25 | * either the GNU General Public License Version 2 or later (the "GPL"), or
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| 26 | * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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| 27 | * in which case the provisions of the GPL or the LGPL are applicable instead
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| 28 | * of those above. If you wish to allow use of your version of this file only
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| 29 | * under the terms of either the GPL or the LGPL, and not to allow others to
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| 30 | * use your version of this file under the terms of the MPL, indicate your
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| 31 | * decision by deleting the provisions above and replace them with the notice
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| 32 | * and other provisions required by the GPL or the LGPL. If you do not delete
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| 33 | * the provisions above, a recipient may use your version of this file under
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| 34 | * the terms of any one of the MPL, the GPL or the LGPL.
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| 35 | *
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| 36 | * ***** END LICENSE BLOCK ***** */
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| 37 |
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| 38 | #include "nspr.h"
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| 39 |
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| 40 | #include "plgetopt.h"
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| 41 |
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| 42 | #include <stdlib.h>
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| 43 | #include <string.h>
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| 44 |
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| 45 | #ifdef XP_MAC
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| 46 | #include "prlog.h"
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| 47 | #define printf PR_LogPrint
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| 48 | #endif
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| 49 |
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| 50 |
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| 51 | #ifndef IOV_MAX
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| 52 | #define IOV_MAX 16
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| 53 | #endif
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| 54 |
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| 55 | #define BASE_PORT 9867
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| 56 |
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| 57 | int PR_CALLBACK Writev(int argc, char **argv)
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| 58 | {
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| 59 |
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| 60 | PRStatus rv;
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| 61 | PRNetAddr serverAddr;
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| 62 | PRFileDesc *clientSock, *debug = NULL;
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| 63 |
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| 64 | char *buffer = NULL;
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| 65 | PRIOVec *iov = NULL;
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| 66 | PRBool passed = PR_TRUE;
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| 67 | PRIntervalTime timein, elapsed, timeout;
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| 68 | PRIntervalTime tmo_min = 0x7fffffff, tmo_max = 0, tmo_elapsed = 0;
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| 69 | PRInt32 tmo_counted = 0, iov_index, loop, bytes, number_fragments;
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| 70 | PRInt32 message_length = 100, fragment_length = 100, messages = 100;
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| 71 | struct Descriptor { PRInt32 length; PRUint32 checksum; } descriptor;
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| 72 |
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| 73 | /*
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| 74 | * USAGE
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| 75 | * -h dns name of host serving the connection (default = self)
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| 76 | * -m number of messages to send (default = 100)
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| 77 | * -s size of each message (default = 100)
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| 78 | * -f size of each message fragment (default = 100)
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| 79 | */
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| 80 |
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| 81 | PLOptStatus os;
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| 82 | PLOptState *opt = PL_CreateOptState(argc, argv, "dh:m:s:f:");
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| 83 |
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| 84 | PR_STDIO_INIT();
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| 85 | rv = PR_InitializeNetAddr(PR_IpAddrLoopback, BASE_PORT, &serverAddr);
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| 86 | PR_ASSERT(PR_SUCCESS == rv);
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| 87 |
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| 88 | while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
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| 89 | {
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| 90 | if (PL_OPT_BAD == os) continue;
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| 91 | switch (opt->option)
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| 92 | {
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| 93 | case 'h': /* the remote host */
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| 94 | {
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| 95 | PRIntn es = 0;
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| 96 | PRHostEnt host;
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| 97 | char buffer[1024];
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| 98 | (void)PR_GetHostByName(opt->value, buffer, sizeof(buffer), &host);
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| 99 | es = PR_EnumerateHostEnt(es, &host, BASE_PORT, &serverAddr);
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| 100 | PR_ASSERT(es > 0);
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| 101 | }
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| 102 | break;
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| 103 | case 'd': /* debug mode */
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| 104 | debug = PR_GetSpecialFD(PR_StandardError);
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| 105 | break;
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| 106 | case 'm': /* number of messages to send */
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| 107 | messages = atoi(opt->value);
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| 108 | break;
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| 109 | case 's': /* total size of each message */
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| 110 | message_length = atoi(opt->value);
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| 111 | break;
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| 112 | case 'f': /* size of each message fragment */
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| 113 | fragment_length = atoi(opt->value);
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| 114 | break;
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| 115 | default:
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| 116 | break;
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| 117 | }
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| 118 | }
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| 119 | PL_DestroyOptState(opt);
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| 120 |
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| 121 | buffer = (char*)malloc(message_length);
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| 122 |
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| 123 | number_fragments = (message_length + fragment_length - 1) / fragment_length + 1;
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| 124 | while (IOV_MAX < number_fragments)
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| 125 | {
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| 126 | fragment_length = message_length / (IOV_MAX - 2);
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| 127 | number_fragments = (message_length + fragment_length - 1) /
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| 128 | fragment_length + 1;
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| 129 | if (NULL != debug) PR_fprintf(debug,
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| 130 | "Too many fragments - reset fragment length to %ld\n", fragment_length);
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| 131 | }
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| 132 | iov = (PRIOVec*)malloc(number_fragments * sizeof(PRIOVec));
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| 133 |
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| 134 | iov[0].iov_base = (char*)&descriptor;
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| 135 | iov[0].iov_len = sizeof(descriptor);
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| 136 | for (iov_index = 1; iov_index < number_fragments; ++iov_index)
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| 137 | {
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| 138 | iov[iov_index].iov_base = buffer + (iov_index - 1) * fragment_length;
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| 139 | iov[iov_index].iov_len = fragment_length;
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| 140 | }
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| 141 |
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| 142 | for (bytes = 0; bytes < message_length; ++bytes)
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| 143 | buffer[bytes] = (char)bytes;
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| 144 |
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| 145 | timeout = PR_SecondsToInterval(1);
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| 146 |
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| 147 | for (loop = 0; loop < messages; ++loop)
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| 148 | {
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| 149 | if (NULL != debug)
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| 150 | PR_fprintf(debug, "[%d]socket ... ", loop);
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| 151 | clientSock = PR_NewTCPSocket();
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| 152 | if (clientSock)
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| 153 | {
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| 154 | timein = PR_IntervalNow();
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| 155 | if (NULL != debug)
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| 156 | PR_fprintf(debug, "connecting ... ");
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| 157 | rv = PR_Connect(clientSock, &serverAddr, timeout);
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| 158 | if (PR_SUCCESS == rv)
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| 159 | {
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| 160 | descriptor.checksum = 0;
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| 161 | descriptor.length = (loop < (messages - 1)) ? message_length : 0;
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| 162 | if (0 == descriptor.length) number_fragments = 1;
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| 163 | else
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| 164 | for (iov_index = 0; iov_index < descriptor.length; ++iov_index)
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| 165 | {
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| 166 | PRUint32 overflow = descriptor.checksum & 0x80000000;
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| 167 | descriptor.checksum = (descriptor.checksum << 1);
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| 168 | if (0x00000000 != overflow) descriptor.checksum += 1;
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| 169 | descriptor.checksum += buffer[iov_index];
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| 170 | }
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| 171 | if (NULL != debug) PR_fprintf(
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| 172 | debug, "sending %d bytes ... ", descriptor.length);
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| 173 |
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| 174 | /* then, at the last moment ... */
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| 175 | descriptor.length = PR_ntohl(descriptor.length);
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| 176 | descriptor.checksum = PR_ntohl(descriptor.checksum);
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| 177 |
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| 178 | bytes = PR_Writev(clientSock, iov, number_fragments, timeout);
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| 179 | if (NULL != debug)
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| 180 | PR_fprintf(debug, "closing ... ");
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| 181 | rv = PR_Shutdown(clientSock, PR_SHUTDOWN_BOTH);
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| 182 | rv = PR_Close(clientSock);
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| 183 | if (NULL != debug) PR_fprintf(
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| 184 | debug, "%s\n", ((PR_SUCCESS == rv) ? "good" : "bad"));
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| 185 | elapsed = PR_IntervalNow() - timein;
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| 186 | if (elapsed < tmo_min) tmo_min = elapsed;
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| 187 | else if (elapsed > tmo_max) tmo_max = elapsed;
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| 188 | tmo_elapsed += elapsed;
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| 189 | tmo_counted += 1;
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| 190 | }
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| 191 | else
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| 192 | {
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| 193 | if (NULL != debug) PR_fprintf(
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| 194 | debug, "failed - retrying (%d, %d)\n",
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| 195 | PR_GetError(), PR_GetOSError());
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| 196 | PR_Close(clientSock);
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| 197 | }
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| 198 | }
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| 199 | else if (NULL != debug)
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| 200 | {
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| 201 | PR_fprintf(debug, "unable to create client socket\n");
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| 202 | passed = PR_FALSE;
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| 203 | }
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| 204 | }
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| 205 | if (NULL != debug) {
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| 206 | if (0 == tmo_counted) {
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| 207 | PR_fprintf(debug, "No connection made\n");
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| 208 | } else {
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| 209 | PR_fprintf(
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| 210 | debug, "\nTimings: %d [%d] %d (microseconds)\n",
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| 211 | PR_IntervalToMicroseconds(tmo_min),
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| 212 | PR_IntervalToMicroseconds(tmo_elapsed / tmo_counted),
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| 213 | PR_IntervalToMicroseconds(tmo_max));
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| 214 | }
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| 215 | }
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| 216 |
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| 217 | PR_DELETE(buffer);
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| 218 | PR_DELETE(iov);
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| 219 |
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| 220 | PR_fprintf(
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| 221 | PR_GetSpecialFD(PR_StandardError),
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| 222 | "%s\n", (passed) ? "PASSED" : "FAILED");
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| 223 | return (passed) ? 0 : 1;
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| 224 | }
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| 225 |
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| 226 | int main(int argc, char **argv)
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| 227 | {
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| 228 | return (PR_VersionCheck(PR_VERSION)) ?
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| 229 | PR_Initialize(Writev, argc, argv, 4) : -1;
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| 230 | } /* main */
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| 231 |
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| 232 | /* writev.c */
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| 233 |
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| 234 |
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