Simple DNS Server
[DNS and Asynchronous DNS Resolver]

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Detailed Description

This contains a simple but fully working DNS server implementation, mostly for testing purposes. It supports serving various DNS resource records such as SRV, CNAME, A, and AAAA.

Typedefs
typedef struct pj_dns_server	pj_dns_server
Functions
pj_status_t	pj_dns_server_create (pj_pool_factory *pf, pj_ioqueue_t *ioqueue, int af, unsigned port, unsigned flags, pj_dns_server **p_srv)
pj_status_t	pj_dns_server_destroy (pj_dns_server *srv)
pj_status_t	pj_dns_server_add_rec (pj_dns_server *srv, unsigned count, const pj_dns_parsed_rr rr[])
pj_status_t	pj_dns_server_del_rec (pj_dns_server *srv, int dns_class, pj_dns_type type, const pj_str_t *name)

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Typedef Documentation

typedef struct pj_dns_server pj_dns_server

Opaque structure to hold DNS server instance.

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Function Documentation

pj_status_t pj_dns_server_add_rec	(	pj_dns_server *	srv,
		unsigned	count,
		const pj_dns_parsed_rr	rr[]
	)

Add generic resource record entries to the server.

Parameters:

	srv	The DNS server instance.
	count	Number of records to be added.
	rr	Array of records to be added.

Returns:

PJ_SUCCESS on success or the appropriate error code.

pj_status_t pj_dns_server_create	(	pj_pool_factory *	pf,
		pj_ioqueue_t *	ioqueue,
		int	af,
		unsigned	port,
		unsigned	flags,
		pj_dns_server **	p_srv
	)

Create the DNS server instance. The instance will run immediately.

Parameters:

	pf	The pool factory to create memory pools.
	ioqueue	Ioqueue instance where the server socket will be registered to.
	af	Address family of the server socket (valid values are pj_AF_INET() for IPv4 and pj_AF_INET6() for IPv6).
	port	The UDP port to listen.
	flags	Flags, currently must be zero.
	p_srv	Pointer to receive the DNS server instance.

Returns:

PJ_SUCCESS if server has been created successfully, otherwise the function will return the appropriate error code.

pj_status_t pj_dns_server_del_rec	(	pj_dns_server *	srv,
		int	dns_class,
		pj_dns_type	type,
		const pj_str_t *	name
	)

Remove the specified record from the server.

Parameters:

	srv	The DNS server instance.
	dns_class	The resource's DNS class. Valid value is PJ_DNS_CLASS_IN.
	type	The resource type.
	name	The resource name to be removed.

Returns:

PJ_SUCCESS on success or the appropriate error code.

pj_status_t pj_dns_server_destroy

(

pj_dns_server *

srv

)

Destroy DNS server instance.

Parameters:

srv

The DNS server instance.

Returns:

PJ_SUCCESS on success or the appropriate error code.