1 '\" te
   2 .\"  Copyright 1989 AT&T  Copyright (c) 1997, Sun Microsystems, Inc.  All Rights Reserved
   3 .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
   4 .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.  See the License for the specific language governing permissions and limitations under the License.
   5 .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE.  If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
   6 .TH SPRAY 3RPC "Apr 13, 2017"
   7 .SH NAME
   8 spray \- scatter data in order to test the network
   9 .SH SYNOPSIS
  10 .LP
  11 .nf
  12 \fBcc\fR [ \fIflag\fR ... ] \fIfile\fR ... \fB-lsocket\fR \fB-lnsl\fR \
  13 \fB-lrpcsvc\fR [ \fIlibrary\fR ... ]
  14 #include <rpcsvc/spray.h>
  15 
  16 \fBbool_t\fR \fBxdr_sprayarr\fR(\fBXDR *\fR\fIxdrs\fR, \fBsprayarr *\fR\fIobjp\fR);
  17 .fi
  18 
  19 .LP
  20 .nf
  21 \fBbool_t\fR \fBxdr_spraycumul\fR(\fBXDR *\fR\fIxdrs\fR, \fBspraycumul *\fR\fIobjp\fR);
  22 .fi
  23 
  24 .SH DESCRIPTION
  25 .LP
  26 The spray program sends packets to a given machine to test communications with
  27 that machine.
  28 .sp
  29 .LP
  30 The spray program is not a C function interface, per se, but it can be accessed
  31 using the generic remote procedure calling interface \fBclnt_call()\fR. See
  32 \fBrpc_clnt_calls\fR(3NSL). The program sends a packet to the called host. The
  33 host acknowledges receipt of the packet. The program counts the number of
  34 acknowledgments and can return that count.
  35 .sp
  36 .LP
  37 The spray program currently supports the following procedures, which should be
  38 called in the order given:
  39 .sp
  40 .ne 2
  41 .na
  42 \fB\fBSPRAYPROC_CLEAR\fR\fR
  43 .ad
  44 .RS 19n
  45 This procedure clears the counter.
  46 .RE
  47 
  48 .sp
  49 .ne 2
  50 .na
  51 \fB\fBSPRAYPROC_SPRAY\fR\fR
  52 .ad
  53 .RS 19n
  54 This procedure sends the packet.
  55 .RE
  56 
  57 .sp
  58 .ne 2
  59 .na
  60 \fB\fBSPRAYPROC_GET\fR\fR
  61 .ad
  62 .RS 19n
  63 This procedure returns the count and the amount of time since the last
  64 \fBSPRAYPROC_CLEAR\fR.
  65 .RE
  66 
  67 .SH EXAMPLES
  68 .LP
  69 \fBExample 1 \fRUsing \fBspray()\fR
  70 .sp
  71 .LP
  72 The following code fragment demonstrates how the spray program is used:
  73 
  74 .sp
  75 .in +2
  76 .nf
  77 #include <rpc/rpc.h>
  78 #include <rpcsvc/spray.h>
  79  .  .  .
  80         spraycumul      spray_result;
  81         sprayarr        spray_data;
  82         char            buf[100];               /* arbitrary data */
  83         int             loop = 1000;
  84         CLIENT  *clnt;
  85         struct timeval timeout0 = {0, 0};
  86         struct timeval timeout25 = {25, 0};
  87         spray_data.sprayarr_len = (uint_t)100;
  88         spray_data.sprayarr_val = buf;
  89         clnt = clnt_create("somehost", SPRAYPROG, SPRAYVERS, "netpath");
  90         if (clnt == (CLIENT *)NULL) {
  91                 /* handle this error */
  92         }
  93         if (clnt_call(clnt, SPRAYPROC_CLEAR,
  94                 xdr_void, NULL, xdr_void, NULL, timeout25)) {
  95                         /* handle this error */
  96         }
  97         while (loop\(mi > 0) {
  98                 if (clnt_call(clnt, SPRAYPROC_SPRAY,
  99                         xdr_sprayarr, &spray_data, xdr_void, NULL, timeout0)) {
 100                                 /* handle this error */
 101                 }
 102         }
 103         if (clnt_call(clnt, SPRAYPROC_GET,
 104                 xdr_void, NULL, xdr_spraycumul, &spray_result, timeout25)) {
 105                         /* handle this error */
 106         }
 107         printf("Acknowledged %ld of 1000 packets in %d secs %d usecs\en",
 108                 spray_result.counter,
 109                 spray_result.clock.sec,
 110                 spray_result.clock.usec);
 111 .fi
 112 .in -2
 113 
 114 .SH ATTRIBUTES
 115 .LP
 116 See \fBattributes\fR(5) for descriptions of the following attributes:
 117 .sp
 118 
 119 .sp
 120 .TS
 121 box;
 122 c | c
 123 l | l .
 124 ATTRIBUTE TYPE  ATTRIBUTE VALUE
 125 _
 126 MT-Level        Unsafe
 127 .TE
 128 
 129 .SH SEE ALSO
 130 .LP
 131 \fBrpc_clnt_calls\fR(3NSL), \fBattributes\fR(5)
 132 .SH NOTES
 133 .LP
 134 This interface is unsafe in multithreaded applications.  Unsafe interfaces
 135 should be called only from the main thread.
 136 .sp
 137 .LP
 138 A spray program is not useful as a networking benchmark as it uses  unreliable
 139 connectionless transports, for example, udp. It can report a large number of
 140 packets dropped, when the drops were caused by the program sending packets
 141 faster than they can be buffered locally, that is, before the packets get to
 142 the network medium.