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/*
* The Spread Toolkit.
*
* The contents of this file are subject to the Spread Open-Source
* License, Version 1.0 (the ``License''); you may not use
* this file except in compliance with the License. You may obtain a
* copy of the License at:
*
* http://www.spread.org/license/
*
* or in the file ``license.txt'' found in this distribution.
*
* Software distributed under the License is distributed on an AS IS basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Creators of Spread are:
* Yair Amir, Michal Miskin-Amir, Jonathan Stanton.
*
* Copyright (C) 1993-2004 Spread Concepts LLC <spread@spreadconcepts.com>
*
* All Rights Reserved.
*
* Major Contributor(s):
* ---------------
* Cristina Nita-Rotaru crisn@cs.purdue.edu - group communication security.
* Theo Schlossnagle jesus@omniti.com - Perl, skiplists, autoconf.
* Dan Schoenblum dansch@cnds.jhu.edu - Java interface.
* John Schultz jschultz@cnds.jhu.edu - contribution to process group membership.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* Not positive if portable JRS 5/2004 */
#include <limits.h>
#include "sp.h"
#define MAX_MESSLEN 100000
static char mess[MAX_MESSLEN] ;
static char recv_mess[MAX_MESSLEN] ;
#define FLOODER_MAX_GROUPS 100
static char User[80];
static char Spread_name[80];
static char Private_group[MAX_GROUP_NAME];
static mailbox Mbox;
static int Num_bytes;
static int Num_messages;
static int Num_members;
static int Read_only, Write_only;
static char ret_groups[FLOODER_MAX_GROUPS][MAX_GROUP_NAME];
static int Send_Counter;
static int Recv_Counters[FLOODER_MAX_GROUPS];
static int Lowest_Recv_Counter;
static int My_Counter_index;
static void Usage( int argc, char *argv[] );
static void Print_help();
int main( int argc, char *argv[] )
{
int ret;
int service_type, num_groups;
char sender[MAX_GROUP_NAME];
int16 mess_type;
int dummy_endian_mismatch;
int joined_members;
int sender_index;
int i,j;
Usage( argc, argv );
if (Num_members == 0) {
/* connecting to the relevant Spread daemon, no need for group info */
printf("flooder: connecting to %s\n", Spread_name );
ret = SP_connect( Spread_name, User, 0, 0, &Mbox, Private_group ) ;
} else {
/* connecting to the relevant Spread daemon, DO need group info */
printf("flooder: connecting to %s with group membership\n", Spread_name );
ret = SP_connect( Spread_name, User, 0, 1, &Mbox, Private_group ) ;
}
if(ret < 0)
{
SP_error( ret );
exit(1) ;
}
/*
* Joining the process group.
*
* Note that this is not necessary in order to multicast the
* messages, but only to demonstrate end-to-end behaviour.
*/
if( Read_only )
{
printf("flooder: Only receiving messages\n");
SP_join( Mbox, "flooder" );
}else if( Write_only ) {
printf("flooder: starting multicast of %d messages, %d bytes each (self discarding).\n", Num_messages, Num_bytes);
}else{
SP_join( Mbox, "flooder" );
printf("flooder: starting multicast of %d messages, %d bytes each.\n", Num_messages, Num_bytes);
}
/* Wait for all members to join */
joined_members = 0;
while( joined_members < Num_members)
{
service_type = 0;
ret = SP_receive( Mbox, &service_type, sender, FLOODER_MAX_GROUPS, &num_groups, ret_groups,
&mess_type, &dummy_endian_mismatch, sizeof(recv_mess), recv_mess );
if( ret < 0 )
{
if ( (ret == GROUPS_TOO_SHORT) || (ret == BUFFER_TOO_SHORT) ) {
printf("\n========Buffers or Groups too Short=======\n");
printf("Should NOT happen in wait for members! Program quitting\n");
exit(1);
}
}
if( Is_regular_mess( service_type ) )
{
mess[ret] = 0;
if ( Is_unreliable_mess( service_type ) ) printf("received UNRELIABLE ");
else if( Is_reliable_mess( service_type ) ) printf("received RELIABLE ");
else if( Is_fifo_mess( service_type ) ) printf("received FIFO ");
else if( Is_causal_mess( service_type ) ) printf("received CAUSAL ");
else if( Is_agreed_mess( service_type ) ) printf("received AGREED ");
else if( Is_safe_mess( service_type ) ) printf("received SAFE ");
printf("message during wait for members, from %s, of type %d, (endian %d) to %d groups \n(%d bytes): %s\n",
sender, mess_type, dummy_endian_mismatch, num_groups, ret, recv_mess );
}else if( Is_membership_mess( service_type ) )
{
if ( Is_reg_memb_mess( service_type ) )
{
printf("Received REGULAR membership for group %s with %d members, where I am member %d:\n",
sender, num_groups, mess_type );
for( i=0; i < num_groups; i++ )
printf("\t%s\n", &ret_groups[i][0] );
/* update count of joined members */
joined_members = num_groups;
}else if( Is_transition_mess( service_type ) ) {
printf("received TRANSITIONAL membership for group %s\n", sender );
}else if( Is_caused_leave_mess( service_type ) ){
printf("received membership message that left group %s\n", sender );
}else printf("received incorrecty membership message of type 0x%x\n", service_type );
} else if ( Is_reject_mess( service_type ) )
{
printf("REJECTED message from %s, of servicetype 0x%x messtype %d, (endian %d) to %d groups \n(%d bytes): %s\n",
sender, service_type, mess_type, dummy_endian_mismatch, num_groups, ret, recv_mess );
}else printf("received message of unknown message type 0x%x with ret %d\n", service_type, ret);
} /* joined_members < Num_members */
/* Update My_Counter_index field based on location of my name in last membership message */
if (Num_members)
{
My_Counter_index = mess_type;
memcpy(&mess[0], &My_Counter_index, sizeof(int));
}
for( i=1; i <= Num_messages; i++ )
{
/* multicast a message unless Read_only */
if( !Read_only )
{
if (Num_members)
{
ret = SP_multicast( Mbox, FIFO_MESS, "flooder", 0, Num_bytes, mess );
Send_Counter++;
} else {
ret = SP_multicast( Mbox, RELIABLE_MESS, "flooder", 0, Num_bytes, mess );
}
if( ret != Num_bytes )
{
if( ret < 0 )
{
SP_error( ret );
exit(1);
}
printf("sent a different message %d -> %d\n", Num_bytes, ret );
}
}
/* receive a message (Read_only) or one of my messages */
if( Read_only || ( i > 200 && !Write_only ) )
{
int notdone;
do{
service_type = 0;
ret = SP_receive( Mbox, &service_type, sender, FLOODER_MAX_GROUPS, &num_groups, ret_groups,
&mess_type, &dummy_endian_mismatch, sizeof(recv_mess), recv_mess );
if( ret < 0 )
{
if ( (ret == GROUPS_TOO_SHORT) || (ret == BUFFER_TOO_SHORT) ) {
service_type = DROP_RECV;
printf("\n========Buffers or Groups too Short=======\n");
ret = SP_receive( Mbox, &service_type, sender, FLOODER_MAX_GROUPS, &num_groups, ret_groups,
&mess_type, &dummy_endian_mismatch, sizeof(recv_mess), recv_mess );
}
}
if( ret < 0 )
{
SP_error( ret );
exit(1);
}
if (Num_members) {
/* update counters of received messages */
memcpy(&sender_index, &recv_mess[0], sizeof(int));
Recv_Counters[sender_index]++;
/*
printf("DEBUG: updated counter %d to value %d\n", sender_index, Recv_Counters[sender_index]);
*/
if (Recv_Counters[sender_index] == (Lowest_Recv_Counter + 1)) {
/* Update Lowest_Recv_Counter */
Lowest_Recv_Counter = INT_MAX;
for (j=0; j < Num_members; j++) {
if (Recv_Counters[j] == 0) continue;
if (Recv_Counters[j] < Lowest_Recv_Counter)
Lowest_Recv_Counter = Recv_Counters[j];
}
if (Lowest_Recv_Counter == INT_MAX)
Lowest_Recv_Counter = 0;
}
/* Read loop is done if we send messages and we have received all
* other senders messages upto 100 less then our current send count
*/
notdone = ( Lowest_Recv_Counter < (Send_Counter - 200) && !Read_only );
} else {
notdone = (strcmp( sender, Private_group ) != 0 && !Read_only);
}
} while( notdone );
}
/* report some progress... */
if( i%1000 == 0 ) printf("flooder: completed %6d messages of %d bytes\n",i, ret);
}
printf("flooder: completed multicast of %d messages, %d bytes each.\n", Num_messages, Num_bytes);
return 0;
}
static void Usage(int argc, char *argv[])
{
/* Setting defaults */
sprintf( User, "flooder" );
sprintf( Spread_name, "4803@localhost");
Num_bytes = 1000;
Num_messages = 10000;
Num_members = 0;
Read_only = 0;
Write_only = 0;
while( --argc > 0 )
{
argv++;
if( !strncmp( *argv, "-u", 2 ) )
{
if (argc < 2) Print_help();
strcpy( User, argv[1] );
argc--; argv++;
}else if( !strncmp( *argv, "-b", 2 ) ){
if (argc < 2) Print_help();
sscanf(argv[1], "%d", &Num_bytes );
argc--; argv++;
}else if( !strncmp( *argv, "-m", 2 ) ){
if (argc < 2) Print_help();
sscanf(argv[1], "%d", &Num_messages );
argc--; argv++;
}else if( !strncmp( *argv, "-n", 2 ) ){
if (argc < 2) Print_help();
sscanf(argv[1], "%d", &Num_members );
argc--; argv++;
}else if( !strncmp( *argv, "-s", 2 ) ){
if (argc < 2) Print_help();
strcpy( Spread_name, argv[1] );
argc--; argv++;
}else if( !strncmp( *argv, "-ro", 3 ) ){
Read_only = 1;
Write_only = 0;
}else if( !strncmp( *argv, "-wo", 3 ) ){
Write_only = 1;
Read_only = 0;
}else{
Print_help();
}
}
if (Num_members > FLOODER_MAX_GROUPS)
{
printf("Too many members. The max is %d\n", FLOODER_MAX_GROUPS);
Print_help();
}
}
static void Print_help()
{
printf( "Usage: spflooder\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
"\t[-u <user name>] : unique (in this machine) user name",
"\t[-m <num messages>] : number of messages",
"\t[-n <num members>] : number of group members to wait for (also turn on multi-sender FC)",
"\t[-b <num bytes>] : number of bytes per message 1-100,000",
"\t[-s <spread name>] : either port or port@machine",
"\t[-ro] : read only (no multicast)",
"\t[-wo] : write only (no receive)");
exit(1);
}
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