tfDnsSetOption

Table of Contents >> Application Reference >> DNS Resolver

#include <trsocket.h>

int tfDnsSetOption	(
	int optionType,
	int optionValue
	);

Function Description

This function sets various DNS options outlined here:

Option Type	Description
TM_DNS_OPTION_RETRIES	Maximum number of times of retransmit a DNS request. Default value 3.
TM_DNS_OPTION_CACHE_SIZE	Maximum number of entries in the DNS cache. Must be greater than zero. Default value 10.
TM_DNS_OPTION_TIMEOUT	Amount of time (in seconds) to wait before retransmitting a DNS request. Value used, if we have one server. Default value 5 seconds.
TM_DNS_OPTION_MIN_TIMEOUT	Amount of time (in seconds) to wait before retransmitting a DNS request. Value used instead of the previous one, if we have multiple servers. Default value 4 seconds.
TM_DNS_OPTION_MAX_SOCKETS_ALLOWED	Maximum number of simultaneous DNS requests. Default value 1.

Parameters

• optionType

  The option to set.

• optionValue

  The value to set the option to.

Returns

• TM_EINVAL

  The optionValue was invalid.

• TM_ENOPROTOOPT

  The optionType was invalid.

• TM_ENOERROR

  Success.

Table of Contents >> Application Reference >> DNS Resolver