task_net.h File Reference

#include "xcom/result.h"
#include "xcom/xcom_common.h"

Go to the source code of this file.

Functions
result	xcom_checked_socket (int domain, int type, int protocol)
struct addrinfo *	xcom_caching_getaddrinfo (char const *server)
int	checked_getaddrinfo (const char *nodename, const char *servname, const struct addrinfo *hints, struct addrinfo **res)
	Wrapper function which retries and checks errors from getaddrinfo. More...
int	checked_getaddrinfo_port (const char *nodename, xcom_port port, const struct addrinfo *hints, struct addrinfo **res)
	Wrapper function to checked_getaddrinfo that accepts a numeric port. More...
void	deinit_network_cache ()
int	init_net ()
int	deinit_net ()

Function Documentation

checked_getaddrinfo()

int checked_getaddrinfo	(	const char *	nodename,
		const char *	servname,
		const struct addrinfo *	hints,
		struct addrinfo **	res
	)

Wrapper function which retries and checks errors from getaddrinfo.

We have observed that getaddrinfo returns EAI_AGAIN when called with an unresolvable hostname on systems using systemd-resolved for DNS resolution. Therefore, we only attempt to resolve nodename up to NR_GETADDRINFO_ATTEMPTS times, to avoid getting stuck in an infinite loop.

checked_getaddrinfo_port()

int checked_getaddrinfo_port	(	const char *	nodename,
		xcom_port	port,
		const struct addrinfo *	hints,
		struct addrinfo **	res
	)

Wrapper function to checked_getaddrinfo that accepts a numeric port.

deinit_net()

int deinit_net

(

)

deinit_network_cache()

void deinit_network_cache

(

)

init_net()

int init_net

(

)

xcom_caching_getaddrinfo()

struct addrinfo * xcom_caching_getaddrinfo

(

char const *

server

)

xcom_checked_socket()

result xcom_checked_socket	(	int	domain,
		int	type,
		int	protocol
	)