dns_lookup() function

Look up a hostname in the array of known hostnames.

Syntax

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Summary

Declaration

from dns.c:601

static err_t dns_lookup(const char *name, ip_addr_t *addr LWIP_DNS_ADDRTYPE_ARG(u8_t dns_addrtype));

Arguments

Argument

Description

name

the hostname to look up

addr

the hostname's IP address, as u32_t (instead of ip_addr_t to better check for failure: != IPADDR_NONE) or IPADDR_NONE if the hostname was not found in the cached dns_table.

Return value

ERR_OK if found, ERR_ARG if not found

Notes

This function only looks in the internal array of known hostnames, it does not send out a query for the hostname if none was found. The function dns_enqueue() can be used to send a query for a hostname.

Examples

References

from examples

dns_lookup() function

Syntax

Arguments

Return value

Notes

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References

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