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Darran Shepherd / Mbed 2 deprecated Bonjour

First step: AutoIP compiled in and working

if/lwip/lwipNetDnsRequest.cpp@1:4218cacaf696, 2010-06-18 (annotated)

Committer:: darran
Date:: Fri Jun 18 15:54:21 2010 +0000
Revision:: 1:4218cacaf696
Parent:: 0:55a05330f8cc

Who changed what in which revision?

User	Revision	Line number	New contents of line
darran	0:55a05330f8cc	1
darran	0:55a05330f8cc	2	/*
darran	0:55a05330f8cc	3	Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
darran	0:55a05330f8cc	4
darran	0:55a05330f8cc	5	Permission is hereby granted, free of charge, to any person obtaining a copy
darran	0:55a05330f8cc	6	of this software and associated documentation files (the "Software"), to deal
darran	0:55a05330f8cc	7	in the Software without restriction, including without limitation the rights
darran	0:55a05330f8cc	8	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
darran	0:55a05330f8cc	9	copies of the Software, and to permit persons to whom the Software is
darran	0:55a05330f8cc	10	furnished to do so, subject to the following conditions:
darran	0:55a05330f8cc	11
darran	0:55a05330f8cc	12	The above copyright notice and this permission notice shall be included in
darran	0:55a05330f8cc	13	all copies or substantial portions of the Software.
darran	0:55a05330f8cc	14
darran	0:55a05330f8cc	15	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
darran	0:55a05330f8cc	16	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
darran	0:55a05330f8cc	17	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
darran	0:55a05330f8cc	18	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
darran	0:55a05330f8cc	19	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
darran	0:55a05330f8cc	20	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
darran	0:55a05330f8cc	21	THE SOFTWARE.
darran	0:55a05330f8cc	22	*/
darran	0:55a05330f8cc	23
darran	0:55a05330f8cc	24	#include "lwipNetDnsRequest.h"
darran	0:55a05330f8cc	25	#include "lwip/err.h" //err_t, ERR_xxx
darran	0:55a05330f8cc	26	#include "lwip/dns.h"
darran	0:55a05330f8cc	27
darran	0:55a05330f8cc	28	#include "netCfg.h"
darran	0:55a05330f8cc	29	#if NET_LWIP_STACK
darran	0:55a05330f8cc	30
darran	0:55a05330f8cc	31	//#define __DEBUG
darran	0:55a05330f8cc	32	#include "dbg/dbg.h"
darran	0:55a05330f8cc	33
darran	1:4218cacaf696	34	LwipNetDnsRequest::LwipNetDnsRequest(const char* hostname) : NetDnsRequest(hostname), m_state(LWIPNETDNS_START), m_cbFired(false), m_closing(false)
darran	0:55a05330f8cc	35	{
darran	0:55a05330f8cc	36	DBG("New LwipNetDnsRequest %p\n", this);
darran	0:55a05330f8cc	37	}
darran	0:55a05330f8cc	38
darran	1:4218cacaf696	39	LwipNetDnsRequest::LwipNetDnsRequest(Host* pHost) : NetDnsRequest(pHost), m_state(LWIPNETDNS_START), m_cbFired(false), m_closing(false)
darran	0:55a05330f8cc	40	{
darran	0:55a05330f8cc	41	DBG("New LwipNetDnsRequest %p\n", this);
darran	0:55a05330f8cc	42	}
darran	0:55a05330f8cc	43
darran	0:55a05330f8cc	44	LwipNetDnsRequest::~LwipNetDnsRequest()
darran	0:55a05330f8cc	45	{
darran	0:55a05330f8cc	46	DBG("LwipNetDnsRequest %p destroyed\n", this);
darran	0:55a05330f8cc	47	}
darran	0:55a05330f8cc	48
darran	0:55a05330f8cc	49	/*
darran	0:55a05330f8cc	50	Main useful function here (see lwip/dns.h):
darran	0:55a05330f8cc	51	err_t dns_gethostbyname(const char hostname, ip_addr_t addr,
darran	0:55a05330f8cc	52	dns_found_callback found, void *callback_arg);
darran	0:55a05330f8cc	53	*/
darran	0:55a05330f8cc	54
darran	0:55a05330f8cc	55	//Execute request & return OK if found, NOTFOUND or ERROR on error, or PROCESSING if the request has not completed yet
darran	0:55a05330f8cc	56	void LwipNetDnsRequest::poll()
darran	0:55a05330f8cc	57	{
darran	0:55a05330f8cc	58	err_t err;
darran	0:55a05330f8cc	59	switch(m_state)
darran	0:55a05330f8cc	60	{
darran	0:55a05330f8cc	61	case LWIPNETDNS_START: //First req, let's call dns_gethostbyname
darran	0:55a05330f8cc	62	ip_addr_t ipStruct;
darran	0:55a05330f8cc	63	err = dns_gethostbyname(m_hostname, &ipStruct, LwipNetDnsRequest::sFoundCb, (void*) this );
darran	0:55a05330f8cc	64	if( err == ERR_OK )
darran	0:55a05330f8cc	65	{
darran	0:55a05330f8cc	66	m_ip = IpAddr(&ipStruct);
darran	0:55a05330f8cc	67	m_state = LWIPNETDNS_OK;
darran	0:55a05330f8cc	68	DBG("DNS: Ip found in cache.\n");
darran	0:55a05330f8cc	69	}
darran	0:55a05330f8cc	70	else if( err == ERR_INPROGRESS)
darran	0:55a05330f8cc	71	{
darran	0:55a05330f8cc	72	DBG("DNS: Processing.\n");
darran	0:55a05330f8cc	73	m_state = LWIPNETDNS_PROCESSING;
darran	0:55a05330f8cc	74	}
darran	0:55a05330f8cc	75	else //Likely ERR_VAL
darran	0:55a05330f8cc	76	{
darran	0:55a05330f8cc	77	DBG("DNS: Error on init.\n");
darran	0:55a05330f8cc	78	m_state = LWIPNETDNS_ERROR;
darran	0:55a05330f8cc	79	}
darran	0:55a05330f8cc	80	break;
darran	0:55a05330f8cc	81	case LWIPNETDNS_PROCESSING:
darran	0:55a05330f8cc	82	break; //Nothing to do, DNS is polled on interrupt
darran	0:55a05330f8cc	83	case LWIPNETDNS_OK:
darran	0:55a05330f8cc	84	if(!m_cbFired)
darran	0:55a05330f8cc	85	{
darran	0:55a05330f8cc	86	DBG("DNS: Ip found.\n");
darran	0:55a05330f8cc	87	m_cbFired = true;
darran	0:55a05330f8cc	88	onReply(NETDNS_FOUND); //Raise callback
darran	0:55a05330f8cc	89	}
darran	0:55a05330f8cc	90	break;
darran	0:55a05330f8cc	91	case LWIPNETDNS_NOTFOUND:
darran	0:55a05330f8cc	92	if(!m_cbFired)
darran	0:55a05330f8cc	93	{
darran	0:55a05330f8cc	94	DBG("DNS: could not be resolved.\n");
darran	0:55a05330f8cc	95	m_cbFired = true;
darran	0:55a05330f8cc	96	onReply(NETDNS_NOTFOUND); //Raise callback
darran	0:55a05330f8cc	97	}
darran	0:55a05330f8cc	98	break;
darran	0:55a05330f8cc	99	case LWIPNETDNS_ERROR:
darran	0:55a05330f8cc	100	default:
darran	0:55a05330f8cc	101	if(!m_cbFired)
darran	0:55a05330f8cc	102	{
darran	0:55a05330f8cc	103	DBG("DNS: Error.\n");
darran	0:55a05330f8cc	104	m_cbFired = true;
darran	0:55a05330f8cc	105	onReply(NETDNS_ERROR); //Raise callback
darran	0:55a05330f8cc	106	}
darran	0:55a05330f8cc	107	break;
darran	0:55a05330f8cc	108	}
darran	1:4218cacaf696	109	if(m_closing && (m_state!=LWIPNETDNS_PROCESSING)) //Check wether the closure has been reqd
darran	1:4218cacaf696	110	{
darran	1:4218cacaf696	111	DBG("LwipNetDnsRequest: Closing in poll()\n");
darran	1:4218cacaf696	112	NetDnsRequest::close();
darran	1:4218cacaf696	113	}
darran	1:4218cacaf696	114	}
darran	1:4218cacaf696	115
darran	1:4218cacaf696	116	void LwipNetDnsRequest::close()
darran	1:4218cacaf696	117	{
darran	1:4218cacaf696	118	DBG("LwipNetDnsRequest: Close req\n");
darran	1:4218cacaf696	119	if(m_state!=LWIPNETDNS_PROCESSING)
darran	1:4218cacaf696	120	{
darran	1:4218cacaf696	121	DBG("LwipNetDnsRequest: Closing in close()\n");
darran	1:4218cacaf696	122	NetDnsRequest::close();
darran	1:4218cacaf696	123	}
darran	1:4218cacaf696	124	else //Cannot close rightaway, waiting for callback from underlying layer
darran	1:4218cacaf696	125	{
darran	1:4218cacaf696	126	m_closing = true;
darran	1:4218cacaf696	127	}
darran	0:55a05330f8cc	128	}
darran	0:55a05330f8cc	129
darran	0:55a05330f8cc	130	void LwipNetDnsRequest::foundCb(const char name, ip_addr_t ipaddr)
darran	0:55a05330f8cc	131	{
darran	0:55a05330f8cc	132	if( ipaddr == NULL )
darran	0:55a05330f8cc	133	{
darran	1:4218cacaf696	134	DBG("LwipNetDnsRequest: Callback: Name not found\n");
darran	0:55a05330f8cc	135	m_state = LWIPNETDNS_NOTFOUND;
darran	0:55a05330f8cc	136	return;
darran	0:55a05330f8cc	137	}
darran	1:4218cacaf696	138	DBG("LwipNetDnsRequest: Callback: Resolved\n");
darran	0:55a05330f8cc	139	m_ip = IpAddr(ipaddr);
darran	0:55a05330f8cc	140	m_state = LWIPNETDNS_OK;
darran	0:55a05330f8cc	141	}
darran	0:55a05330f8cc	142
darran	0:55a05330f8cc	143
darran	0:55a05330f8cc	144	void LwipNetDnsRequest::sFoundCb(const char name, ip_addr_t ipaddr, void *arg)
darran	0:55a05330f8cc	145	{
darran	1:4218cacaf696	146	DBG("LwipNetDnsRequest: Static callback\n");
darran	0:55a05330f8cc	147	LwipNetDnsRequest* pMe = (LwipNetDnsRequest*) arg;
darran	0:55a05330f8cc	148	return pMe->foundCb( name, ipaddr );
darran	0:55a05330f8cc	149	}
darran	0:55a05330f8cc	150
darran	0:55a05330f8cc	151	#endif
darran	0:55a05330f8cc	152

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	18 Jun 2010
Imports:	7
Forks:	0
Commits:	2
Dependents:	0
Dependencies:	1
Followers:	1

if/lwip/lwipNetDnsRequest.cpp@1:4218cacaf696, 2010-06-18 (annotated)

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