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  20 .TH PCAP_SET_TIMEOUT 3PCAP "6 December 2017"
  21 .SH NAME
  22 pcap_set_timeout \- set the packet buffer timeout for a
  23 not-yet-activated capture handle
  24 .SH SYNOPSIS
  25 .nf
  26 .ft B
  27 #include <pcap/pcap.h>
  28 .LP
  29 .ft B
  30 int pcap_set_timeout(pcap_t *p, int to_ms);
  31 .ft
  32 .fi
  33 .SH DESCRIPTION
  34 .B pcap_set_timeout()
  35 sets the packet buffer timeout that will be used on a capture handle
  36 when the handle is activated to
  37 .IR to_ms ,
  38 which is in units of milliseconds.  (See
  39 .BR pcap (3PCAP)
  40 for an explanation of the packet buffer timeout.)
  41 .LP
  42 The behavior, if the timeout isn't specified, is undefined, as is the
  43 behavior if the timeout is set to zero or to a negative value.  We
  44 recommend always setting the timeout to a non-zero value unless
  45 immediate mode is set, in which case the timeout has no effect.
  46 .SH RETURN VALUE
  47 .B pcap_set_timeout()
  48 returns 0 on success or
  49 .B PCAP_ERROR_ACTIVATED
  50 if called on a capture handle that has been activated.
  51 .SH SEE ALSO
  52 .BR pcap_create (3PCAP),
  53 .BR pcap_activate (3PCAP),
  54 .BR \%pcap_set_immediate_mode (3PCAP)