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Skip directed-broadcast addresses silently in iteration mode #6

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Skip directed-broadcast addresses silently in iteration mode #6

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9 changes: 9 additions & 0 deletions src/statusq.c
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,7 @@
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>
#include <stdlib.h>
#include <sys/time.h>
#include "statusq.h"
Expand Down Expand Up @@ -134,6 +135,14 @@ send_query ( int sock, struct in_addr dest_addr, my_uint32_t rtt_base )
sizeof ( dest_sockaddr ) );
if ( status == -1 )
{
/* EACCES on sendto means the kernel has classified the destination
* as a directed-broadcast for a locally-connected subnet and the
* socket does not have SO_BROADCAST set. In iteration mode this is
* just an address we should skip rather than a real failure --
* print nothing instead of a misleading "Permission denied". */
if ( errno == EACCES )
return;

snprintf ( errmsg,
sizeof errmsg,
"%s\tSendto failed",
Expand Down