/******************************************************************************
* FunctionName : espconn_tcp_accept
* Description : A new incoming connection has been accepted.
* Parameters : arg -- Additional argument to pass to the callback function
* pcb -- The connection pcb which is accepted
* err -- An unused error code, always ERR_OK currently
* Returns : acception result
*******************************************************************************/
static err_t ICACHE_FLASH_ATTR
espconn_tcp_accept(void *arg, struct tcp_pcb *pcb, err_t err)
{
struct espconn *espconn = arg;
espconn_msg *paccept = NULL;
remot_info *pinfo = NULL;
LWIP_UNUSED_ARG(err);
if(system_get_free_heap_size() < 8192) return ERR_MEM; // added PV`
paccept = (espconn_msg *)os_zalloc(sizeof(espconn_msg));
tcp_arg(pcb, paccept);
tcp_err(pcb, esponn_server_err);
if (paccept == NULL)
return ERR_MEM;
/*insert the node to the active connection list*/
espconn_list_creat(&plink_active, paccept);
paccept->preverse = espconn;
paccept->pespconn = (struct espconn *)os_zalloc(sizeof(struct espconn));
if (paccept->pespconn == NULL)
return ERR_MEM;
paccept->pespconn->proto.tcp = (esp_tcp *)os_zalloc(sizeof(esp_tcp));
if (paccept->pespconn->proto.tcp == NULL)
return ERR_MEM;
//paccept->pcommon.timeout = 0x0a;
//link_timer = 0x0a;
paccept->pcommon.pcb = pcb;
paccept->pcommon.remote_port = pcb->remote_port;
paccept->pcommon.remote_ip[0] = ip4_addr1_16(&pcb->remote_ip);
paccept->pcommon.remote_ip[1] = ip4_addr2_16(&pcb->remote_ip);
paccept->pcommon.remote_ip[2] = ip4_addr3_16(&pcb->remote_ip);
paccept->pcommon.remote_ip[3] = ip4_addr4_16(&pcb->remote_ip);
os_memcpy(espconn->proto.tcp->remote_ip, paccept->pcommon.remote_ip, 4);
espconn->proto.tcp->remote_port = pcb->remote_port;
espconn->state = ESPCONN_CONNECT;
espconn_copy_partial(paccept->pespconn, espconn);
espconn_get_connection_info(espconn, &pinfo , 0);
espconn_printf("espconn_tcp_accept link_cnt: %d\n", espconn->link_cnt);
if (espconn->link_cnt == espconn_tcp_get_max_con_allow(espconn) + 1)
return ERR_ISCONN;
tcp_sent(pcb, espconn_server_sent);
tcp_recv(pcb, espconn_server_recv);
tcp_poll(pcb, espconn_server_poll, 8); /* every 1 seconds */
if (paccept->pespconn->proto.tcp->connect_callback != NULL) {
paccept->pespconn->proto.tcp->connect_callback(paccept->pespconn);
}
return ERR_OK;
}
/******************************************************************************
* FunctionName : espconn_tcp_reconnect
* Description : reconnect with host
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
static void ICACHE_FLASH_ATTR
espconn_tcp_reconnect(void *arg)
{
espconn_msg *precon_cb = arg;
sint8 re_err = 0;
espconn_buf *perr_buf = NULL;
espconn_buf *perr_back = NULL;
espconn_kill_oldest_pcb();
if (precon_cb != NULL) {
struct espconn *espconn = precon_cb->preverse;
re_err = precon_cb->pcommon.err;
if (precon_cb->pespconn != NULL){
if (espconn != NULL){/*Process the server's message block*/
if (precon_cb->pespconn->proto.tcp != NULL){
espconn_copy_partial(espconn, precon_cb->pespconn);
espconn_printf("server: %d.%d.%d.%d : %d reconnection\n", espconn->proto.tcp->remote_ip[0],
espconn->proto.tcp->remote_ip[1],espconn->proto.tcp->remote_ip[2],
espconn->proto.tcp->remote_ip[3],espconn->proto.tcp->remote_port);
free(precon_cb->pespconn->proto.tcp);
precon_cb->pespconn->proto.tcp = NULL;
}
free(precon_cb->pespconn);
precon_cb->pespconn = NULL;
} else {/*Process the client's message block*/
espconn = precon_cb->pespconn;
espconn_printf("client: %d.%d.%d.%d : %d reconnection\n", espconn->proto.tcp->local_ip[0],
espconn->proto.tcp->local_ip[1],espconn->proto.tcp->local_ip[2],
espconn->proto.tcp->local_ip[3],espconn->proto.tcp->local_port);
}
}
/*to prevent memory leaks, ensure that each allocated is deleted*/
perr_buf = precon_cb->pcommon.pbuf;
while (perr_buf != NULL){
perr_back = perr_buf;
perr_buf = perr_back->pnext;
espconn_pbuf_delete(&precon_cb->pcommon.pbuf,perr_back);
free(perr_back);
perr_back = NULL;
}
bzero(&pktinfo[1], sizeof(struct espconn_packet));
memcpy(&pktinfo[1], (void*)&precon_cb->pcommon.packet_info, sizeof(struct espconn_packet));
free(precon_cb);
precon_cb = NULL;
if (espconn && espconn->proto.tcp && espconn->proto.tcp->reconnect_callback != NULL) {
espconn->proto.tcp->reconnect_callback(espconn, re_err);
}
} else {
espconn_printf("espconn_tcp_reconnect err\n");
}
}
/******************************************************************************
* FunctionName : espconn_tcp_disconnect
* Description : disconnect with host
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
static void ICACHE_FLASH_ATTR
espconn_tcp_disconnect_successful(void *arg)
{
espconn_msg *pdiscon_cb = arg;
sint8 dis_err = 0;
if (pdiscon_cb != NULL) {
struct espconn *espconn = pdiscon_cb->preverse;
dis_err = pdiscon_cb->pcommon.err;
if (pdiscon_cb->pespconn != NULL){
struct tcp_pcb *pcb = NULL;
if (espconn != NULL){
if (pdiscon_cb->pespconn->proto.tcp != NULL){
espconn_copy_partial(espconn, pdiscon_cb->pespconn);
espconn_printf("server: %d.%d.%d.%d : %d disconnect\n", espconn->proto.tcp->remote_ip[0],
espconn->proto.tcp->remote_ip[1],espconn->proto.tcp->remote_ip[2],
espconn->proto.tcp->remote_ip[3],espconn->proto.tcp->remote_port);
os_free(pdiscon_cb->pespconn->proto.tcp);
pdiscon_cb->pespconn->proto.tcp = NULL;
}
os_free(pdiscon_cb->pespconn);
pdiscon_cb->pespconn = NULL;
} else {
espconn = pdiscon_cb->pespconn;
espconn_printf("client: %d.%d.%d.%d : %d disconnect\n", espconn->proto.tcp->local_ip[0],
espconn->proto.tcp->local_ip[1],espconn->proto.tcp->local_ip[2],
espconn->proto.tcp->local_ip[3],espconn->proto.tcp->local_port);
}
pcb = find_tcpsrv_pcb(pdiscon_cb); // corrected PV`
if(pcb != NULL) { // added PV`
tcp_arg(pcb, NULL);
tcp_err(pcb, NULL);
} // added PV`
/*delete TIME_WAIT State pcb after 2MSL time,for not all data received by application.*/
if (pdiscon_cb->pcommon.espconn_opt == ESPCONN_REUSEADDR){
if ((pcb != NULL)&&(pcb->state == TIME_WAIT)){ // corrected PV`
tcp_pcb_remove(&tcp_tw_pcbs,pcb);
memp_free(MEMP_TCP_PCB,pcb);
}
}
}
os_free(pdiscon_cb);
pdiscon_cb = NULL;
if (espconn->proto.tcp->disconnect_callback != NULL) {
espconn->proto.tcp->disconnect_callback(espconn);
}
} else {
espconn_printf("espconn_tcp_disconnect err\n");
}
}
/******************************************************************************
* FunctionName : espconn_tcp_disconnect
* Description : disconnect with host
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
static void
espconn_tcp_disconnect_successful(void *arg)
{
espconn_msg *pdiscon_cb = arg;
sint8 dis_err = 0;
if (pdiscon_cb != NULL) {
struct espconn *espconn = pdiscon_cb->preverse;
dis_err = pdiscon_cb->pcommon.err;
if (pdiscon_cb->pespconn != NULL){
struct tcp_pcb *pcb = NULL;
if (espconn != NULL){
if (pdiscon_cb->pespconn->proto.tcp != NULL){
espconn_copy_partial(espconn, pdiscon_cb->pespconn);
espconn_printf("server: %d.%d.%d.%d : %d disconnect\n", espconn->proto.tcp->remote_ip[0],
espconn->proto.tcp->remote_ip[1],espconn->proto.tcp->remote_ip[2],
espconn->proto.tcp->remote_ip[3],espconn->proto.tcp->remote_port);
os_free(pdiscon_cb->pespconn->proto.tcp);
pdiscon_cb->pespconn->proto.tcp = NULL;
}
os_free(pdiscon_cb->pespconn);
pdiscon_cb->pespconn = NULL;
} else {
espconn = pdiscon_cb->pespconn;
espconn_printf("client: %d.%d.%d.%d : %d disconnect\n", espconn->proto.tcp->local_ip[0],
espconn->proto.tcp->local_ip[1],espconn->proto.tcp->local_ip[2],
espconn->proto.tcp->local_ip[3],espconn->proto.tcp->local_port);
}
pcb = pdiscon_cb->pcommon.pcb;
tcp_arg(pcb, NULL);
tcp_err(pcb, NULL);
}
os_free(pdiscon_cb);
pdiscon_cb = NULL;
if (espconn->proto.tcp->disconnect_callback != NULL) {
espconn->proto.tcp->disconnect_callback(espconn);
}
} else {
espconn_printf("espconn_tcp_disconnect err\n");
}
}
/******************************************************************************
* FunctionName : espconn_tcp_reconnect
* Description : reconnect with host
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
static void ICACHE_FLASH_ATTR
espconn_tcp_reconnect(void *arg)
{
espconn_msg *precon_cb = arg;
sint8 re_err = 0;
if (precon_cb != NULL) {
struct espconn *espconn = precon_cb->preverse;
re_err = precon_cb->pcommon.err;
if (precon_cb->pespconn != NULL){
if (espconn != NULL){
if (precon_cb->pespconn->proto.tcp != NULL){
espconn_copy_partial(espconn, precon_cb->pespconn);
espconn_printf("server: %d.%d.%d.%d : %d reconnection\n", espconn->proto.tcp->remote_ip[0],
espconn->proto.tcp->remote_ip[1],espconn->proto.tcp->remote_ip[2],
espconn->proto.tcp->remote_ip[3],espconn->proto.tcp->remote_port);
os_free(precon_cb->pespconn->proto.tcp);
precon_cb->pespconn->proto.tcp = NULL;
}
os_free(precon_cb->pespconn);
precon_cb->pespconn = NULL;
} else {
espconn = precon_cb->pespconn;
espconn_printf("client: %d.%d.%d.%d : %d reconnection\n", espconn->proto.tcp->local_ip[0],
espconn->proto.tcp->local_ip[1],espconn->proto.tcp->local_ip[2],
espconn->proto.tcp->local_ip[3],espconn->proto.tcp->local_port);
}
}
os_free(precon_cb);
precon_cb = NULL;
if (espconn->proto.tcp->reconnect_callback != NULL) {
espconn->proto.tcp->reconnect_callback(espconn, re_err);
}
} else {
espconn_printf("espconn_tcp_reconnect err\n");
}
}
/******************************************************************************
* FunctionName : espconn_tcp_disconnect
* Description : disconnect with host
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
static void ICACHE_FLASH_ATTR
espconn_tcp_disconnect_successful(void *arg)
{
espconn_msg *pdiscon_cb = arg;
sint8 dis_err = 0;
espconn_buf *pdis_buf = NULL;
espconn_buf *pdis_back = NULL;
espconn_kill_oldest_pcb();
if (pdiscon_cb != NULL) {
struct espconn *espconn = pdiscon_cb->preverse;
dis_err = pdiscon_cb->pcommon.err;
if (pdiscon_cb->pespconn != NULL){
struct tcp_pcb *pcb = NULL;
if (espconn != NULL){/*Process the server's message block*/
if (pdiscon_cb->pespconn->proto.tcp != NULL && espconn->proto.tcp){
espconn_copy_partial(espconn, pdiscon_cb->pespconn);
espconn_printf("server: %d.%d.%d.%d : %d disconnect\n", espconn->proto.tcp->remote_ip[0],
espconn->proto.tcp->remote_ip[1],espconn->proto.tcp->remote_ip[2],
espconn->proto.tcp->remote_ip[3],espconn->proto.tcp->remote_port);
free(pdiscon_cb->pespconn->proto.tcp);
pdiscon_cb->pespconn->proto.tcp = NULL;
}
free(pdiscon_cb->pespconn);
pdiscon_cb->pespconn = NULL;
} else {/*Process the client's message block*/
espconn = pdiscon_cb->pespconn;
espconn_printf("client: %d.%d.%d.%d : %d disconnect\n", espconn->proto.tcp->local_ip[0],
espconn->proto.tcp->local_ip[1],espconn->proto.tcp->local_ip[2],
espconn->proto.tcp->local_ip[3],espconn->proto.tcp->local_port);
}
/*process the current TCP block*/
pcb = espconn_find_current_pcb(pdiscon_cb);
if (pcb != NULL){
if (espconn_reuse_disabled(pdiscon_cb)) {
struct tcp_pcb *cpcb = NULL;
struct tcp_pcb *prev = NULL;
uint8_t pcb_remove;
espconn_printf("espconn_tcp_disconnect_successful %d, %d\n", pcb->state, pcb->local_port);
cpcb = tcp_tw_pcbs;
while (cpcb != NULL) {
pcb_remove = 0;
if (cpcb->local_port == pcb->local_port) {
++pcb_remove;
}
/* If the PCB should be removed, do it. */
if (pcb_remove) {
struct tcp_pcb *backup_pcb = NULL;
tcp_pcb_purge(cpcb);
/* Remove PCB from tcp_tw_pcbs list. */
if (prev != NULL) {
LWIP_ASSERT("espconn_tcp_delete: middle cpcb != tcp_tw_pcbs",cpcb != tcp_tw_pcbs);
prev->next = cpcb->next;
} else {
/* This PCB was the first. */
LWIP_ASSERT("espconn_tcp_delete: first cpcb == tcp_tw_pcbs",tcp_tw_pcbs == cpcb);
tcp_tw_pcbs = cpcb->next;
}
backup_pcb = cpcb;
cpcb = cpcb->next;
memp_free(MEMP_TCP_PCB, backup_pcb);
} else {
prev = cpcb;
cpcb = cpcb->next;
}
}
} else {
tcp_arg(pcb, NULL);
tcp_err(pcb, NULL);
}
}
}
/*to prevent memory leaks, ensure that each allocated is deleted*/
pdis_buf = pdiscon_cb->pcommon.pbuf;
while (pdis_buf != NULL) {
pdis_back = pdis_buf;
pdis_buf = pdis_back->pnext;
espconn_pbuf_delete(&pdiscon_cb->pcommon.pbuf, pdis_back);
free(pdis_back);
pdis_back = NULL;
}
bzero(&pktinfo[0], sizeof(struct espconn_packet));
memcpy(&pktinfo[0], (void*)&pdiscon_cb->pcommon.packet_info, sizeof(struct espconn_packet));
free(pdiscon_cb);
pdiscon_cb = NULL;
if (espconn->proto.tcp && espconn->proto.tcp->disconnect_callback != NULL) {
espconn->proto.tcp->disconnect_callback(espconn);
}
} else {
espconn_printf("espconn_tcp_disconnect err\n");
}
}
/******************************************************************************
* FunctionName : espconn_tcp_accept
* Description : A new incoming connection has been accepted.
* Parameters : arg -- Additional argument to pass to the callback function
* pcb -- The connection pcb which is accepted
* err -- An unused error code, always ERR_OK currently
* Returns : acception result
*******************************************************************************/
static err_t ICACHE_FLASH_ATTR
espconn_tcp_accept(void *arg, struct tcp_pcb *pcb, err_t err)
{
struct espconn *espconn = arg;
espconn_msg *paccept = NULL;
remot_info *pinfo = NULL;
LWIP_UNUSED_ARG(err);
if (!espconn || !espconn->proto.tcp) {
return ERR_ARG;
}
tcp_arg(pcb, paccept);
tcp_err(pcb, esponn_server_err);
/*Ensure the active connection is less than the count of active connections on the server*/
espconn_get_connection_info(espconn, &pinfo , 0);
espconn_printf("espconn_tcp_accept link_cnt: %d\n", espconn->link_cnt);
if (espconn->link_cnt == espconn_tcp_get_max_con_allow(espconn))
return ERR_ISCONN;
/*Creates a new active connect control message*/
paccept = (espconn_msg *)malloc(sizeof(espconn_msg));
memset(paccept, 0, sizeof(espconn_msg));
tcp_arg(pcb, paccept);
if (paccept == NULL)
return ERR_MEM;
/*Insert the node to the active connection list*/
espconn_list_creat(&plink_active, paccept);
paccept->preverse = espconn;
paccept->pespconn = (struct espconn *)malloc(sizeof(struct espconn));
if (paccept->pespconn == NULL)
return ERR_MEM;
paccept->pespconn->proto.tcp = (esp_tcp *)malloc(sizeof(esp_tcp));
if (paccept->pespconn->proto.tcp == NULL)
return ERR_MEM;
/*Reserve the remote information for current active connection*/
paccept->pcommon.pcb = pcb;
paccept->pcommon.remote_port = pcb->remote_port;
paccept->pcommon.remote_ip[0] = ip4_addr1_16(&pcb->remote_ip.u_addr.ip4);
paccept->pcommon.remote_ip[1] = ip4_addr2_16(&pcb->remote_ip.u_addr.ip4);
paccept->pcommon.remote_ip[2] = ip4_addr3_16(&pcb->remote_ip.u_addr.ip4);
paccept->pcommon.remote_ip[3] = ip4_addr4_16(&pcb->remote_ip.u_addr.ip4);
paccept->pcommon.write_flag = true;
memcpy(espconn->proto.tcp->remote_ip, paccept->pcommon.remote_ip, 4);
espconn->proto.tcp->remote_port = pcb->remote_port;
espconn->state = ESPCONN_CONNECT;
espconn_copy_partial(paccept->pespconn, espconn);
/*Set the specify function that should be called
* when TCP data has been successfully delivered,
* when active connection receives data,
* or periodically from active connection*/
tcp_sent(pcb, espconn_server_sent);
tcp_recv(pcb, espconn_server_recv);
tcp_poll(pcb, espconn_server_poll, 8); /* every 1 seconds */
/*Disable Nagle algorithm default*/
tcp_nagle_disable(pcb);
/*Default set the total number of espconn_buf on the unsent lists for one*/
espconn_tcp_set_buf_count(paccept->pespconn, 1);
if (paccept->pespconn->proto.tcp->connect_callback != NULL) {
paccept->pespconn->proto.tcp->connect_callback(paccept->pespconn);
}
/*Enable keep alive option*/
if (espconn_keepalive_disabled(paccept))
espconn_keepalive_enable(pcb);
return ERR_OK;
}
