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nodemcu-firmware/app/lwip/app/espconn.c

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/******************************************************************************
* Copyright 2013-2014 Espressif Systems (Wuxi)
*
* FileName: espconn.c
*
* Description: espconn interface for user
*
* Modification history:
* 2014/3/31, v1.0 create this file.
*******************************************************************************/
#include "lwip/netif.h"
#include "lwip/inet.h"
#include "netif/etharp.h"
#include "lwip/tcp.h"
#include "lwip/ip.h"
#include "lwip/init.h"
#include "ets_sys.h"
#include "os_type.h"
//#include "os.h"
#include "lwip/mem.h"
#include "lwip/app/espconn_tcp.h"
#include "lwip/app/espconn_udp.h"
#include "lwip/app/espconn.h"
#include "user_interface.h"
#ifdef MEMLEAK_DEBUG
static const char mem_debug_file[] ICACHE_RODATA_ATTR = __FILE__;
#endif
espconn_msg *plink_active = NULL;
espconn_msg *pserver_list = NULL;
remot_info premot[linkMax];
struct espconn_packet pktinfo[2];
static uint8 espconn_tcp_get_buf_count(espconn_buf *pesp_buf);
/******************************************************************************
* FunctionName : espconn_copy_partial
* Description : reconnect with host
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
void ICACHE_FLASH_ATTR
espconn_copy_partial(struct espconn *pesp_dest, struct espconn *pesp_source)
{
pesp_dest->type = pesp_source->type;
pesp_dest->state = pesp_source->state;
if (pesp_source->type == ESPCONN_TCP){
pesp_dest->proto.tcp->remote_port = pesp_source->proto.tcp->remote_port;
pesp_dest->proto.tcp->local_port = pesp_source->proto.tcp->local_port;
os_memcpy(pesp_dest->proto.tcp->remote_ip, pesp_source->proto.tcp->remote_ip, 4);
os_memcpy(pesp_dest->proto.tcp->local_ip, pesp_source->proto.tcp->local_ip, 4);
pesp_dest->proto.tcp->connect_callback = pesp_source->proto.tcp->connect_callback;
pesp_dest->proto.tcp->reconnect_callback = pesp_source->proto.tcp->reconnect_callback;
pesp_dest->proto.tcp->disconnect_callback = pesp_source->proto.tcp->disconnect_callback;
} else {
pesp_dest->proto.udp->remote_port = pesp_source->proto.udp->remote_port;
pesp_dest->proto.udp->local_port = pesp_source->proto.udp->local_port;
os_memcpy(pesp_dest->proto.udp->remote_ip, pesp_source->proto.udp->remote_ip, 4);
os_memcpy(pesp_dest->proto.udp->local_ip, pesp_source->proto.udp->local_ip, 4);
}
pesp_dest->recv_callback = pesp_source->recv_callback;
pesp_dest->sent_callback = pesp_source->sent_callback;
pesp_dest->link_cnt = pesp_source->link_cnt;
pesp_dest->reverse = pesp_source->reverse;
}
/******************************************************************************
* FunctionName : espconn_copy_partial
* Description : insert the node to the active connection list
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
void ICACHE_FLASH_ATTR espconn_list_creat(espconn_msg **phead, espconn_msg* pinsert)
{
espconn_msg *plist = NULL;
// espconn_msg *ptest = NULL;
if (*phead == NULL)
*phead = pinsert;
else {
plist = *phead;
while (plist->pnext != NULL) {
plist = plist->pnext;
}
plist->pnext = pinsert;
}
pinsert->pnext = NULL;
/* ptest = *phead;
while(ptest != NULL){
os_printf("espconn_list_creat %p\n", ptest);
ptest = ptest->pnext;
}*/
}
/******************************************************************************
* FunctionName : espconn_list_delete
* Description : remove the node from the active connection list
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
void ICACHE_FLASH_ATTR espconn_list_delete(espconn_msg **phead, espconn_msg* pdelete)
{
espconn_msg *plist = NULL;
// espconn_msg *ptest = NULL;
plist = *phead;
if (plist == NULL){
*phead = NULL;
} else {
if (plist == pdelete){
*phead = plist->pnext;
} else {
while (plist != NULL) {
if (plist->pnext == pdelete){
plist->pnext = pdelete->pnext;
}
plist = plist->pnext;
}
}
}
/* ptest = *phead;
while(ptest != NULL){
os_printf("espconn_list_delete %p\n", ptest);
ptest = ptest->pnext;
}*/
}
/******************************************************************************
* FunctionName : espconn_pbuf_create
* Description : insert the node to the active connection list
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
void ICACHE_FLASH_ATTR espconn_pbuf_create(espconn_buf **phead, espconn_buf* pinsert)
{
espconn_buf *plist = NULL;
if (*phead == NULL)
*phead = pinsert;
else {
plist = *phead;
while (plist->pnext != NULL) {
plist = plist->pnext;
}
plist->pnext = pinsert;
}
pinsert->pnext = NULL;
}
/******************************************************************************
* FunctionName : espconn_pbuf_delete
* Description : remove the node from the active connection list
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
void ICACHE_FLASH_ATTR espconn_pbuf_delete(espconn_buf **phead, espconn_buf* pdelete)
{
espconn_buf *plist = NULL;
plist = *phead;
if (plist == NULL){
*phead = NULL;
} else {
if (plist == pdelete){
*phead = plist->pnext;
} else {
while (plist != NULL) {
if (plist->pnext == pdelete){
plist->pnext = pdelete->pnext;
}
plist = plist->pnext;
}
}
}
}
/******************************************************************************
* FunctionName : espconn_find_connection
* Description : Initialize the server: set up a listening PCB and bind it to
* the defined port
* Parameters : espconn -- the espconn used to build server
* Returns : true or false
*******************************************************************************/
bool ICACHE_FLASH_ATTR espconn_find_connection(struct espconn *pespconn, espconn_msg **pnode)
{
espconn_msg *plist = NULL;
struct ip_addr ip_remot;
struct ip_addr ip_list;
if (pespconn == NULL)
return false;
/*find the active connection node*/
for (plist = plink_active; plist != NULL; plist = plist->pnext){
if (pespconn == plist->pespconn) {
*pnode = plist;
return true;
}
}
/*find the active server node*/
for (plist = pserver_list; plist != NULL; plist = plist->pnext){
if (pespconn == plist->pespconn) {
if (pespconn->proto.tcp == NULL)
return false;
IP4_ADDR(&ip_remot, pespconn->proto.tcp->remote_ip[0],
pespconn->proto.tcp->remote_ip[1],
pespconn->proto.tcp->remote_ip[2],
pespconn->proto.tcp->remote_ip[3]);
if ((ip_remot.addr == IPADDR_ANY) || (pespconn->proto.tcp->remote_port == 0))
return false;
/*find the active connection node*/
for (plist = plink_active; plist != NULL; plist = plist->pnext){
IP4_ADDR(&ip_list, plist->pcommon.remote_ip[0],
plist->pcommon.remote_ip[1], plist->pcommon.remote_ip[2],
plist->pcommon.remote_ip[3]);
if ((ip_list.addr == ip_remot.addr) && (pespconn->proto.tcp->remote_port == plist->pcommon.remote_port)) {
*pnode = plist;
return true;
}
}
return false;
}
}
return false;
}
/******************************************************************************
* FunctionName : espconn_get_acticve_num
* Description : get the count of simulatenously active connections
* Parameters : type -- the type
* Returns : the count of simulatenously active connections
*******************************************************************************/
static uint8 ICACHE_FLASH_ATTR
espconn_get_acticve_num(uint8 type)
{
espconn_msg *plist = NULL;
uint8 num_tcp_active = 0;
for (plist = plink_active; plist != NULL; plist = plist->pnext) {
if (plist->pespconn != NULL && plist->pespconn->type == type) {
num_tcp_active++;
}
}
return num_tcp_active;
}
/******************************************************************************
* FunctionName : espconn_connect
* Description : The function given as the connect
* Parameters : espconn -- the espconn used to listen the connection
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_connect(struct espconn *espconn)
{
struct ip_addr ipaddr;
struct ip_info ipinfo;
uint8 connect_status = 0;
sint8 value = ESPCONN_OK;
espconn_msg *plist = NULL;
remot_info *pinfo = NULL;
if (espconn == NULL) {
return ESPCONN_ARG;
} else if (espconn ->type != ESPCONN_TCP)
return ESPCONN_ARG;
/*Check the active node count whether is the limit or not*/
if (espconn_get_acticve_num(ESPCONN_TCP) >= espconn_tcp_get_max_con())
return ESPCONN_ISCONN;
/*Check the IP address whether is zero or not in different mode*/
if (wifi_get_opmode() == ESPCONN_STA){
wifi_get_ip_info(STA_NETIF,&ipinfo);
if (ipinfo.ip.addr == 0){
return ESPCONN_RTE;
}
} else if(wifi_get_opmode() == ESPCONN_AP){
wifi_get_ip_info(AP_NETIF,&ipinfo);
if (ipinfo.ip.addr == 0){
return ESPCONN_RTE;
}
} else if(wifi_get_opmode() == ESPCONN_AP_STA){
IP4_ADDR(&ipaddr, espconn->proto.tcp->remote_ip[0],
espconn->proto.tcp->remote_ip[1],
espconn->proto.tcp->remote_ip[2],
espconn->proto.tcp->remote_ip[3]);
ipaddr.addr <<= 8;
wifi_get_ip_info(AP_NETIF,&ipinfo);
ipinfo.ip.addr <<= 8;
espconn_printf("softap_addr = %x, remote_addr = %x\n", ipinfo.ip.addr, ipaddr.addr);
if (ipaddr.addr != ipinfo.ip.addr){
connect_status = wifi_station_get_connect_status();
if (connect_status == STATION_GOT_IP){
wifi_get_ip_info(STA_NETIF,&ipinfo);
if (ipinfo.ip.addr == 0)
return ESPCONN_RTE;
} else if (connect_status == STATION_IDLE){
return ESPCONN_RTE;
} else {
return connect_status;
}
}
}
/*check the active node information whether is the same as the entity or not*/
for (plist = plink_active; plist != NULL; plist = plist->pnext){
if (plist->pespconn && plist->pespconn->type == ESPCONN_TCP){
if (espconn->proto.tcp->local_port == plist->pespconn->proto.tcp->local_port){
return ESPCONN_ISCONN;
}
}
}
value = espconn_tcp_client(espconn);
return value;
}
/******************************************************************************
* FunctionName : espconn_create
* Description : sent data for client or server
* Parameters : espconn -- espconn to the data transmission
* Returns : result
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_create(struct espconn *espconn)
{
sint8 value = ESPCONN_OK;
espconn_msg *plist = NULL;
if (espconn == NULL) {
return ESPCONN_ARG;
} else if (espconn ->type != ESPCONN_UDP){
return ESPCONN_ARG;
}
/*check the active node information whether is the same as the entity or not*/
for (plist = plink_active; plist != NULL; plist = plist->pnext){
if (plist->pespconn && plist->pespconn->type == ESPCONN_UDP){
if (espconn->proto.udp->local_port == plist->pespconn->proto.udp->local_port){
return ESPCONN_ISCONN;
}
}
}
value = espconn_udp_server(espconn);
return value;
}
/******************************************************************************
* FunctionName : espconn_sent
* Description : sent data for client or server
* Parameters : espconn -- espconn to set for client or server
* psent -- data to send
* length -- length of data to send
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_sent(struct espconn *espconn, uint8 *psent, uint16 length)
{
espconn_msg *pnode = NULL;
bool value = false;
err_t error = ESPCONN_OK;
if (espconn == NULL || psent == NULL || length == 0) {
return ESPCONN_ARG;
}
/*Find the node depend on the espconn message*/
value = espconn_find_connection(espconn, &pnode);
if (value){
espconn ->state = ESPCONN_WRITE;
switch (espconn ->type) {
case ESPCONN_TCP:
/* calling sent function frequently,make sure last packet has been backup or sent fully*/
if (pnode->pcommon.write_flag){
espconn_buf *pbuf = NULL;
/*If total number of espconn_buf on the unsent lists exceeds the set maximum, return an error */
if (espconn_copy_enabled(pnode)){
if (espconn_tcp_get_buf_count(pnode->pcommon.pbuf) >= pnode ->pcommon.pbuf_num)
return ESPCONN_MAXNUM;
} else {
struct tcp_pcb *pcb = pnode->pcommon.pcb;
if (pcb->snd_queuelen >= TCP_SND_QUEUELEN)
return ESPCONN_MAXNUM;
}
pbuf = (espconn_buf*) os_zalloc(sizeof(espconn_buf));
if (pbuf == NULL)
return ESPCONN_MEM;
else {
/*Backup the application packet information for send more data*/
pbuf->payload = psent;
pbuf->punsent = pbuf->payload;
pbuf->unsent = length;
pbuf->len = length;
/*insert the espconn_pbuf to the list*/
espconn_pbuf_create(&pnode->pcommon.pbuf, pbuf);
if (pnode->pcommon.ptail == NULL)
pnode->pcommon.ptail = pbuf;
}
/*when set the data copy option. change the flag for next packet*/
if (espconn_copy_disabled(pnode))
pnode->pcommon.write_flag = false;
error = espconn_tcp_write(pnode);
// if (error != ESPCONN_OK){
// /*send the application packet fail,
// * ensure that each allocated is deleted*/
// espconn_pbuf_delete(&pnode->pcommon.pbuf, pbuf);
// os_free(pbuf);
// pbuf = NULL;
// }
return error;
} else
return ESPCONN_ARG;
break;
case ESPCONN_UDP:
return espconn_udp_sent(pnode, psent, length);
break;
default :
break;
}
}
return ESPCONN_ARG;
}
/******************************************************************************
* FunctionName : espconn_sendto
* Description : send data for UDP
* Parameters : espconn -- espconn to set for UDP
* psent -- data to send
* length -- length of data to send
* Returns : error
*******************************************************************************/
sint16 ICACHE_FLASH_ATTR
espconn_sendto(struct espconn *espconn, uint8 *psent, uint16 length)
{
espconn_msg *pnode = NULL;
bool value = false;
err_t error = ESPCONN_OK;
if (espconn == NULL || psent == NULL || length == 0) {
return ESPCONN_ARG;
}
/*Find the node depend on the espconn message*/
value = espconn_find_connection(espconn, &pnode);
if (value && espconn->type == ESPCONN_UDP)
return espconn_udp_sendto(pnode, psent, length);
else
return ESPCONN_ARG;
}
/******************************************************************************
* FunctionName : espconn_send
* Description : sent data for client or server
* Parameters : espconn -- espconn to set for client or server
* psent -- data to send
* length -- length of data to send
* Returns : none
*******************************************************************************/
sint8 espconn_send(struct espconn *espconn, uint8 *psent, uint16 length) __attribute__((alias("espconn_sent")));
/******************************************************************************
* FunctionName : espconn_tcp_get_wnd
* Description : get the window size of simulatenously active TCP connections
* Parameters : none
* Returns : the number of TCP_MSS active TCP connections
*******************************************************************************/
uint8 ICACHE_FLASH_ATTR espconn_tcp_get_wnd(void)
{
uint8 tcp_num = 0;
tcp_num = (TCP_WND / TCP_MSS);
return tcp_num;
}
/******************************************************************************
* FunctionName : espconn_tcp_set_max_con
* Description : set the window size simulatenously active TCP connections
* Parameters : num -- the number of TCP_MSS
* Returns : ESPCONN_ARG -- Illegal argument
* ESPCONN_OK -- No error
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR espconn_tcp_set_wnd(uint8 num)
{
if (num == 0 || num > linkMax)
return ESPCONN_ARG;
TCP_WND = (num * TCP_MSS);
return ESPCONN_OK;
}
/******************************************************************************
* FunctionName : espconn_tcp_get_mss
* Description : get the mss size of simulatenously active TCP connections
* Parameters : none
* Returns : the size of TCP_MSS active TCP connections
*******************************************************************************/
uint16 ICACHE_FLASH_ATTR espconn_tcp_get_mss(void)
{
uint16 tcp_num = 0;
tcp_num = TCP_MSS;
return tcp_num;
}
/******************************************************************************
* FunctionName : espconn_tcp_get_max_con
* Description : get the number of simulatenously active TCP connections
* Parameters : espconn -- espconn to set the connect callback
* Returns : none
*******************************************************************************/
uint8 ICACHE_FLASH_ATTR espconn_tcp_get_max_con(void)
{
uint8 tcp_num = 0;
tcp_num = MEMP_NUM_TCP_PCB;
return tcp_num;
}
/******************************************************************************
* FunctionName : espconn_tcp_set_max_con
* Description : set the number of simulatenously active TCP connections
* Parameters : espconn -- espconn to set the connect callback
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR espconn_tcp_set_max_con(uint8 num)
{
if (num == 0 || num > linkMax)
return ESPCONN_ARG;
MEMP_NUM_TCP_PCB = num;
return ESPCONN_OK;
}
/******************************************************************************
* FunctionName : espconn_tcp_get_max_retran
* Description : get the Maximum number of retransmissions of data active TCP connections
* Parameters : none
* Returns : the Maximum number of retransmissions
*******************************************************************************/
uint8 ICACHE_FLASH_ATTR espconn_tcp_get_max_retran(void)
{
uint8 tcp_num = 0;
tcp_num = TCP_MAXRTX;
return tcp_num;
}
/******************************************************************************
* FunctionName : espconn_tcp_set_max_retran
* Description : set the Maximum number of retransmissions of data active TCP connections
* Parameters : num -- the Maximum number of retransmissions
* Returns : result
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR espconn_tcp_set_max_retran(uint8 num)
{
if (num == 0 || num > 12)
return ESPCONN_ARG;
TCP_MAXRTX = num;
return ESPCONN_OK;
}
/******************************************************************************
* FunctionName : espconn_tcp_get_max_syn
* Description : get the Maximum number of retransmissions of SYN segments
* Parameters : none
* Returns : the Maximum number of retransmissions
*******************************************************************************/
uint8 ICACHE_FLASH_ATTR espconn_tcp_get_max_syn(void)
{
uint8 tcp_num = 0;
tcp_num = TCP_SYNMAXRTX;
return tcp_num;
}
/******************************************************************************
* FunctionName : espconn_tcp_set_max_syn
* Description : set the Maximum number of retransmissions of SYN segments
* Parameters : num -- the Maximum number of retransmissions
* Returns : result
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR espconn_tcp_set_max_syn(uint8 num)
{
if (num == 0 || num > 12)
return ESPCONN_ARG;
TCP_SYNMAXRTX = num;
return ESPCONN_OK;
}
/******************************************************************************
* FunctionName : espconn_tcp_get_max_con_allow
* Description : get the count of simulatenously active connections on the server
* Parameters : espconn -- espconn to get the count
* Returns : result
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR espconn_tcp_get_max_con_allow(struct espconn *espconn)
{
espconn_msg *pget_msg = NULL;
if ((espconn == NULL) || (espconn->type == ESPCONN_UDP))
return ESPCONN_ARG;
pget_msg = pserver_list;
while (pget_msg != NULL){
if (pget_msg->pespconn == espconn){
return pget_msg->count_opt;
}
pget_msg = pget_msg->pnext;
}
return ESPCONN_ARG;
}
/******************************************************************************
* FunctionName : espconn_tcp_set_max_con_allow
* Description : set the count of simulatenously active connections on the server
* Parameters : espconn -- espconn to set the count
* Returns : result
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR espconn_tcp_set_max_con_allow(struct espconn *espconn, uint8 num)
{
espconn_msg *pset_msg = NULL;
if ((espconn == NULL) || (num > MEMP_NUM_TCP_PCB) || (espconn->type == ESPCONN_UDP))
return ESPCONN_ARG;
pset_msg = pserver_list;
while (pset_msg != NULL){
if (pset_msg->pespconn == espconn){
pset_msg->count_opt = num;
return ESPCONN_OK;
}
pset_msg = pset_msg->pnext;
}
return ESPCONN_ARG;
}
/******************************************************************************
* FunctionName : espconn_tcp_set_buf_count
* Description : set the total number of espconn_buf on the unsent lists for one
* activate connection
* Parameters : espconn -- espconn to set the count
* num -- the total number of espconn_buf
* Returns : result
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR espconn_tcp_set_buf_count(struct espconn *espconn, uint8 num)
{
espconn_msg *plist = NULL;
if (espconn == NULL || (num > TCP_SND_QUEUELEN))
return ESPCONN_ARG;
/*find the node from the active connection list*/
for (plist = plink_active; plist != NULL; plist = plist->pnext){
if (plist->pespconn && plist->pespconn == espconn && espconn->type == ESPCONN_TCP){
plist->pcommon.pbuf_num = num;
return ESPCONN_OK;
}
}
if (plist == NULL)
return ESPCONN_ARG;
}
/******************************************************************************
* FunctionName : espconn_tcp_get_buf_count
* Description : get the count of the current node which has espconn_buf
* Parameters : pesp_buf -- the list head of espconn_buf type
* Returns : the count of the current node which has espconn_buf
*******************************************************************************/
static uint8 ICACHE_FLASH_ATTR espconn_tcp_get_buf_count(espconn_buf *pesp_buf)
{
espconn_buf *pbuf_list = pesp_buf;
uint8 pbuf_num = 0;
/*polling the list get the count of the current node*/
while (pbuf_list != NULL){
pbuf_list = pbuf_list->pnext;
pbuf_num ++;
}
return pbuf_num;
}
/******************************************************************************
* FunctionName : espconn_regist_sentcb
* Description : Used to specify the function that should be called when data
* has been successfully delivered to the remote host.
* Parameters : espconn -- espconn to set the sent callback
* sent_cb -- sent callback function to call for this espconn
* when data is successfully sent
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_regist_sentcb(struct espconn *espconn, espconn_sent_callback sent_cb)
{
if (espconn == NULL) {
return ESPCONN_ARG;
}
espconn ->sent_callback = sent_cb;
return ESPCONN_OK;
}
/******************************************************************************
* FunctionName : espconn_regist_sentcb
* Description : Used to specify the function that should be called when data
* has been successfully delivered to the remote host.
* Parameters : espconn -- espconn to set the sent callback
* sent_cb -- sent callback function to call for this espconn
* when data is successfully sent
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_regist_write_finish(struct espconn *espconn, espconn_connect_callback write_finish_fn)
{
if (espconn == NULL || espconn ->proto.tcp == NULL || espconn->type == ESPCONN_UDP) {
return ESPCONN_ARG;
}
espconn ->proto.tcp->write_finish_fn = write_finish_fn;
return ESPCONN_OK;
}
/******************************************************************************
* FunctionName : espconn_regist_connectcb
* Description : used to specify the function that should be called when
* connects to host.
* Parameters : espconn -- espconn to set the connect callback
* connect_cb -- connected callback function to call when connected
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_regist_connectcb(struct espconn *espconn, espconn_connect_callback connect_cb)
{
if (espconn == NULL) {
return ESPCONN_ARG;
}
espconn->proto.tcp->connect_callback = connect_cb;
return ESPCONN_OK;
}
/******************************************************************************
* FunctionName : espconn_regist_recvcb
* Description : used to specify the function that should be called when recv
* data from host.
* Parameters : espconn -- espconn to set the recv callback
* recv_cb -- recv callback function to call when recv data
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_regist_recvcb(struct espconn *espconn, espconn_recv_callback recv_cb)
{
if (espconn == NULL) {
return ESPCONN_ARG;
}
espconn ->recv_callback = recv_cb;
return ESPCONN_OK;
}
/******************************************************************************
* FunctionName : espconn_regist_reconcb
* Description : used to specify the function that should be called when connection
* because of err disconnect.
* Parameters : espconn -- espconn to set the err callback
* recon_cb -- err callback function to call when err
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_regist_reconcb(struct espconn *espconn, espconn_reconnect_callback recon_cb)
{
if (espconn == NULL) {
return ESPCONN_ARG;
}
espconn ->proto.tcp->reconnect_callback = recon_cb;
return ESPCONN_OK;
}
/******************************************************************************
* FunctionName : espconn_regist_disconcb
* Description : used to specify the function that should be called when disconnect
* Parameters : espconn -- espconn to set the err callback
* discon_cb -- err callback function to call when err
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_regist_disconcb(struct espconn *espconn, espconn_connect_callback discon_cb)
{
if (espconn == NULL) {
return ESPCONN_ARG;
}
espconn ->proto.tcp->disconnect_callback = discon_cb;
return ESPCONN_OK;
}
/******************************************************************************
* FunctionName : espconn_get_connection_info
* Description : used to specify the function that should be called when disconnect
* Parameters : espconn -- espconn to set the err callback
* discon_cb -- err callback function to call when err
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_get_connection_info(struct espconn *pespconn, remot_info **pcon_info, uint8 typeflags)
{
espconn_msg *plist = NULL;
if (pespconn == NULL)
return ESPCONN_ARG;
os_memset(premot, 0, sizeof(premot));
pespconn->link_cnt = 0;
plist = plink_active;
switch (pespconn->type){
case ESPCONN_TCP:
while(plist != NULL){
if (plist->preverse == pespconn){
premot[pespconn->link_cnt].state = plist->pespconn->state;
premot[pespconn->link_cnt].remote_port = plist->pcommon.remote_port;
os_memcpy(premot[pespconn->link_cnt].remote_ip, plist->pcommon.remote_ip, 4);
pespconn->link_cnt ++;
}
plist = plist->pnext;
}
break;
case ESPCONN_UDP:
while(plist != NULL){
if (plist->pespconn == pespconn){
premot[pespconn->link_cnt].state = plist->pespconn->state;
premot[pespconn->link_cnt].remote_port = plist->pcommon.remote_port;
os_memcpy(premot[pespconn->link_cnt].remote_ip, plist->pcommon.remote_ip, 4);
pespconn->link_cnt ++;
}
plist = plist->pnext;
}
break;
default:
break;
}
*pcon_info = premot;
if (pespconn->link_cnt == 0)
return ESPCONN_ARG;
return ESPCONN_OK;
}
/******************************************************************************
* FunctionName : espconn_accept
* Description : The function given as the listen
* Parameters : espconn -- the espconn used to listen the connection
* Returns :
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_accept(struct espconn *espconn)
{
sint8 value = ESPCONN_OK;
espconn_msg *plist = NULL;
if (espconn == NULL) {
return ESPCONN_ARG;
} else if (espconn ->type != ESPCONN_TCP)
return ESPCONN_ARG;
/*check the active node information whether is the same as the entity or not*/
for (plist = plink_active; plist != NULL; plist = plist->pnext){
if (plist->pespconn && plist->pespconn->type == ESPCONN_TCP){
if (espconn->proto.tcp->local_port == plist->pespconn->proto.tcp->local_port){
return ESPCONN_ISCONN;
}
}
}
value = espconn_tcp_server(espconn);
return value;
}
/******************************************************************************
* FunctionName : espconn_regist_time
* Description : used to specify the time that should be called when don't recv data
* Parameters : espconn -- the espconn used to the connection
* interval -- the timer when don't recv data
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR espconn_regist_time(struct espconn *espconn, uint32 interval, uint8 type_flag)
{
espconn_msg *pnode = NULL;
espconn_msg *ptime_msg = NULL;
bool value = false;
if ((espconn == NULL) || (type_flag > 0x01))
return ESPCONN_ARG;
if (type_flag == 0x01){
/*set the timeout time for one active connection of the server*/
value = espconn_find_connection(espconn, &pnode);
if (value){
pnode->pcommon.timeout = interval;
return ESPCONN_OK;
} else
return ESPCONN_ARG;
} else {
/*set the timeout time for all active connection of the server*/
ptime_msg = pserver_list;
while (ptime_msg != NULL){
if (ptime_msg->pespconn == espconn){
ptime_msg->pcommon.timeout = interval;
return ESPCONN_OK;
}
ptime_msg = ptime_msg->pnext;
}
}
return ESPCONN_ARG;
}
/******************************************************************************
* FunctionName : espconn_disconnect
* Description : disconnect with host
* Parameters : espconn -- the espconn used to disconnect the connection
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_disconnect(struct espconn *espconn)
{
espconn_msg *pnode = NULL;
bool value = false;
if (espconn == NULL) {
return ESPCONN_ARG;;
} else if (espconn ->type != ESPCONN_TCP)
return ESPCONN_ARG;
/*Find the node depend on the espconn message*/
value = espconn_find_connection(espconn, &pnode);
if (value){
/*protect for redisconnection*/
if (espconn->state == ESPCONN_CLOSE)
return ESPCONN_INPROGRESS;
espconn_tcp_disconnect(pnode,0); //1 force, 0 normal
return ESPCONN_OK;
} else
return ESPCONN_ARG;
}
/******************************************************************************
* FunctionName : espconn_abort
* Description : Forcely abort with host
* Parameters : espconn -- the espconn used to disconnect the connection
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_abort(struct espconn *espconn)
{
espconn_msg *pnode = NULL;
bool value = false;
if (espconn == NULL) {
return ESPCONN_ARG;;
} else if (espconn ->type != ESPCONN_TCP)
return ESPCONN_ARG;
/*Find the node depend on the espconn message*/
value = espconn_find_connection(espconn, &pnode);
if (value){
/*protect for redisconnection*/
if (espconn->state == ESPCONN_CLOSE)
return ESPCONN_INPROGRESS;
espconn_tcp_disconnect(pnode,1); //1 force, 0 normal
return ESPCONN_OK;
} else
return ESPCONN_ARG;
}
/******************************************************************************
* FunctionName : espconn_get_packet_info
* Description : get the packet info with host
* Parameters : espconn -- the espconn used to disconnect the connection
* infoarg -- the packet info
* Returns : the errur code
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_get_packet_info(struct espconn *espconn, struct espconn_packet* infoarg)
{
espconn_msg *pnode = NULL;
err_t err;
bool value = false;
if (espconn == NULL || infoarg == NULL) {
return ESPCONN_ARG;;
} else if (espconn->type != ESPCONN_TCP)
return ESPCONN_ARG;
/*Find the node depend on the espconn message*/
value = espconn_find_connection(espconn, &pnode);
if (value) {
struct tcp_pcb *pcb = pnode->pcommon.pcb;
if (pcb == NULL)
return ESPCONN_ARG;
pnode->pcommon.packet_info.packseq_nxt = pcb->rcv_nxt;
pnode->pcommon.packet_info.packseqno = pcb->snd_nxt;
pnode->pcommon.packet_info.snd_buf_size = pcb->snd_buf;
pnode->pcommon.packet_info.total_queuelen = TCP_SND_QUEUELEN;
pnode->pcommon.packet_info.snd_queuelen = pnode->pcommon.packet_info.total_queuelen - pcb->snd_queuelen;
os_memcpy(infoarg,(void*)&pnode->pcommon.packet_info, sizeof(struct espconn_packet));
return ESPCONN_OK;
} else {
switch (espconn->state){
case ESPCONN_CLOSE:
os_memcpy(infoarg,(void*)&pktinfo[0], sizeof(struct espconn_packet));
err = ESPCONN_OK;
break;
case ESPCONN_NONE:
os_memcpy(infoarg,(void*)&pktinfo[1], sizeof(struct espconn_packet));
err = ESPCONN_OK;
break;
default:
err = ESPCONN_ARG;
break;
}
return err;
}
}
/******************************************************************************
* FunctionName : espconn_set_opt
* Description : set the option for connections so that we don't end up bouncing
* all connections at the same time .
* Parameters : espconn -- the espconn used to set the connection
* opt -- the option for set
* Returns : the result
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_set_opt(struct espconn *espconn, uint8 opt)
{
espconn_msg *pnode = NULL;
struct tcp_pcb *tpcb;
bool value = false;
if (espconn == NULL) {
return ESPCONN_ARG;;
} else if (espconn->type != ESPCONN_TCP)
return ESPCONN_ARG;
/*Find the node depend on the espconn message*/
value = espconn_find_connection(espconn, &pnode);
if (value) {
pnode->pcommon.espconn_opt |= opt;
tpcb = pnode->pcommon.pcb;
if (espconn_delay_disabled(pnode))
tcp_nagle_disable(tpcb);
if (espconn_keepalive_disabled(pnode))
espconn_keepalive_enable(tpcb);
return ESPCONN_OK;
} else
return ESPCONN_ARG;
}
/******************************************************************************
* FunctionName : espconn_clear_opt
* Description : clear the option for connections so that we don't end up bouncing
* all connections at the same time .
* Parameters : espconn -- the espconn used to set the connection
* opt -- the option for clear
* Returns : the result
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_clear_opt(struct espconn *espconn, uint8 opt)
{
espconn_msg *pnode = NULL;
struct tcp_pcb *tpcb;
bool value = false;
if (espconn == NULL) {
return ESPCONN_ARG;;
} else if (espconn->type != ESPCONN_TCP)
return ESPCONN_ARG;
/*Find the node depend on the espconn message*/
value = espconn_find_connection(espconn, &pnode);
if (value) {
pnode->pcommon.espconn_opt &= ~opt;
tpcb = pnode->pcommon.pcb;
if (espconn_keepalive_enabled(pnode))
espconn_keepalive_disable(tpcb);
if (espconn_delay_enabled(pnode))
tcp_nagle_enable(tpcb);
return ESPCONN_OK;
} else
return ESPCONN_ARG;
}
/******************************************************************************
* FunctionName : espconn_set_keepalive
* Description : access level value for connection so that we set the value for
* keep alive
* Parameters : espconn -- the espconn used to set the connection
* level -- the connection's level
* value -- the value of time(s)
* Returns : access port value
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR espconn_set_keepalive(struct espconn *espconn, uint8 level, void* optarg)
{
espconn_msg *pnode = NULL;
bool value = false;
sint8 ret = ESPCONN_OK;
if (espconn == NULL || optarg == NULL) {
return ESPCONN_ARG;;
} else if (espconn->type != ESPCONN_TCP)
return ESPCONN_ARG;
/*Find the node depend on the espconn message*/
value = espconn_find_connection(espconn, &pnode);
if (value && espconn_keepalive_disabled(pnode)) {
struct tcp_pcb *pcb = pnode->pcommon.pcb;
switch (level){
case ESPCONN_KEEPIDLE:
pcb->keep_idle = 1000 * (u32_t)(*(int*)optarg);
ret = ESPCONN_OK;
break;
case ESPCONN_KEEPINTVL:
pcb->keep_intvl = 1000 * (u32_t)(*(int*)optarg);
ret = ESPCONN_OK;
break;
case ESPCONN_KEEPCNT:
pcb->keep_cnt = (u32_t)(*(int*)optarg);
ret = ESPCONN_OK;
break;
default:
ret = ESPCONN_ARG;
break;
}
return ret;
} else
return ESPCONN_ARG;
}
/******************************************************************************
* FunctionName : espconn_get_keepalive
* Description : access level value for connection so that we get the value for
* keep alive
* Parameters : espconn -- the espconn used to get the connection
* level -- the connection's level
* Returns : access keep alive value
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR espconn_get_keepalive(struct espconn *espconn, uint8 level, void *optarg)
{
espconn_msg *pnode = NULL;
bool value = false;
sint8 ret = ESPCONN_OK;
if (espconn == NULL || optarg == NULL) {
return ESPCONN_ARG;;
} else if (espconn->type != ESPCONN_TCP)
return ESPCONN_ARG;
/*Find the node depend on the espconn message*/
value = espconn_find_connection(espconn, &pnode);
if (value && espconn_keepalive_disabled(pnode)) {
struct tcp_pcb *pcb = pnode->pcommon.pcb;
switch (level) {
case ESPCONN_KEEPIDLE:
*(int*)optarg = (int)(pcb->keep_idle/1000);
ret = ESPCONN_OK;
break;
case ESPCONN_KEEPINTVL:
*(int*)optarg = (int)(pcb->keep_intvl/1000);
ret = ESPCONN_OK;
break;
case ESPCONN_KEEPCNT:
*(int*)optarg = (int)(pcb->keep_cnt);
ret = ESPCONN_OK;
break;
default:
ret = ESPCONN_ARG;
break;
}
return ret;
} else
return ESPCONN_ARG;
}
/******************************************************************************
* FunctionName : espconn_delete
* Description : disconnect with host
* Parameters : espconn -- the espconn used to disconnect the connection
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_delete(struct espconn *espconn)
{
espconn_msg *pnode = NULL;
bool value = false;
if (espconn == NULL) {
return ESPCONN_ARG;
} else if (espconn ->type != ESPCONN_UDP)
return espconn_tcp_delete(espconn);
/*Find the node depend on the espconn message*/
value = espconn_find_connection(espconn, &pnode);
if (value){
espconn_udp_disconnect(pnode);
return ESPCONN_OK;
} else
return ESPCONN_ARG;
}
/******************************************************************************
* FunctionName : espconn_port
* Description : access port value for client so that we don't end up bouncing
* all connections at the same time .
* Parameters : none
* Returns : access port value
*******************************************************************************/
uint32 ICACHE_FLASH_ATTR
espconn_port(void)
{
uint32 port = 0;
static uint32 randnum = 0;
do {
port = os_random();
if (port < 0) {
port = os_random() - port;
}
port %= 0xc350;
if (port < 0x400) {
port += 0x400;
}
} while (port == randnum);
randnum = port;
return port;
}
/******************************************************************************
* FunctionName : espconn_gethostbyname
* Description : Resolve a hostname (string) into an IP address.
* Parameters : pespconn -- espconn to resolve a hostname
* hostname -- the hostname that is to be queried
* addr -- pointer to a ip_addr_t where to store the address if
* it is already cached in the dns_table (only valid if
* ESPCONN_OK is returned!)
* found -- a callback function to be called on success, failure
* or timeout (only if ERR_INPROGRESS is returned!)
* Returns : err_t return code
* - ESPCONN_OK if hostname is a valid IP address string or the host
* name is already in the local names table.
* - ESPCONN_INPROGRESS enqueue a request to be sent to the DNS server
* for resolution if no errors are present.
* - ESPCONN_ARG: dns client not initialized or invalid hostname
*******************************************************************************/
err_t ICACHE_FLASH_ATTR
espconn_gethostbyname(struct espconn *pespconn, const char *hostname, ip_addr_t *addr, dns_found_callback found)
{
return dns_gethostbyname(hostname, addr, found, pespconn);
}
/******************************************************************************
* FunctionName : espconn_dns_setserver
* Description : Initialize one of the DNS servers.
* Parameters : numdns -- the index of the DNS server to set must
* be < DNS_MAX_SERVERS = 2
* dnsserver -- IP address of the DNS server to set
* Returns : none
*******************************************************************************/
void ICACHE_FLASH_ATTR
espconn_dns_setserver(u8_t numdns, ip_addr_t *dnsserver)
{
dns_setserver(numdns,dnsserver);
}
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