/******************************************************************************
* FunctionName : espconn_tcp_client
* Description : Initialize the client: set up a connect PCB and bind it to
* the defined port
* Parameters : espconn -- the espconn used to build client
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR
espconn_tcp_client(struct espconn *espconn)
{
struct tcp_pcb *pcb = NULL;
struct ip_addr ipaddr;
espconn_msg *pclient = NULL;
/*Creates a new client control message*/
pclient = (espconn_msg *)os_zalloc(sizeof(espconn_msg));
if (pclient == NULL){
return ESPCONN_MEM;
}
/*Set an IP address given for Little-endian.*/
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]);
/*Creates a new TCP protocol control block*/
pcb = tcp_new();
if (pcb == NULL) {
/*to prevent memory leaks, ensure that each allocated is deleted*/
os_free(pclient);
pclient = NULL;
return ESPCONN_MEM;
} else {
/*insert the node to the active connection list*/
espconn_list_creat(&plink_active, pclient);
tcp_arg(pcb, (void *)pclient);
tcp_err(pcb, espconn_client_err);
pclient->preverse = NULL;
pclient->pespconn = espconn;
pclient->pespconn->state = ESPCONN_WAIT;
pclient->pcommon.pcb = pcb;
tcp_bind(pcb, IP_ADDR_ANY, pclient->pespconn->proto.tcp->local_port);
/*Establish the connection*/
pclient->pcommon.err = tcp_connect(pcb, &ipaddr,
pclient->pespconn->proto.tcp->remote_port, espconn_client_connect);
if (pclient->pcommon.err == ERR_RTE){
/*remove the node from the client's active connection list*/
espconn_list_delete(&plink_active, pclient);
espconn_kill_pcb(pcb->local_port);
os_free(pclient);
pclient = NULL;
return ESPCONN_RTE;
}
return pclient->pcommon.err;
}
}
/******************************************************************************
* FunctionName : espconn_tcp_delete
* Description : delete the server: delete a listening PCB and free it
* Parameters : pdeletecon -- the espconn used to delete a server
* Returns : none
*******************************************************************************/
sint8 ICACHE_FLASH_ATTR espconn_tcp_delete(struct espconn *pdeletecon)
{
err_t err=ESPCONN_ARG;
remot_info *pinfo = NULL;
espconn_msg *pdelete_msg = NULL;
struct tcp_pcb *pcb = NULL;
if (pdeletecon == NULL)
return ESPCONN_ARG;
espconn_get_connection_info(pdeletecon, &pinfo , 0);
/*make sure all the active connection have been disconnect*/
if (pdeletecon->link_cnt != 0)
return ESPCONN_INPROGRESS;
else {
espconn_printf("espconn_tcp_delete %p\n",pdeletecon);
pdelete_msg = pserver_list;
while (pdelete_msg != NULL){
if (pdelete_msg->pespconn == pdeletecon){
/*remove the node from the client's active connection list*/
espconn_list_delete(&pserver_list, pdelete_msg);
pcb = pdelete_msg->preverse;
printf("espconn_tcp_delete %d, %d\n",pcb->state, pcb->local_port);
espconn_kill_pcb(pcb->local_port);
err = tcp_close(pcb);
free(pdelete_msg);
pdelete_msg = NULL;
break;
}
pdelete_msg = pdelete_msg->pnext;
}
if (err == ERR_OK)
return err;
else
return ESPCONN_ARG;
}
}
sint8 ICACHE_FLASH_ATTR
espconn_tcp_client(struct espconn *espconn)
{
struct tcp_pcb *pcb = NULL;
ip_addr_t ipaddr;
espconn_msg *pclient = NULL;
/*Creates a new client control message*/
pclient = (espconn_msg *)malloc(sizeof(espconn_msg));
memset(pclient,0,sizeof(espconn_msg));
if (pclient == NULL){
return ESPCONN_MEM;
}
/*Set an IP address given for Little-endian.*/
ipaddr.type = IPADDR_TYPE_V4;
IP4_ADDR(&ipaddr.u_addr.ip4, espconn->proto.tcp->remote_ip[0],
espconn->proto.tcp->remote_ip[1],
espconn->proto.tcp->remote_ip[2],
espconn->proto.tcp->remote_ip[3]);
// printf("espconn_tcp_client ipaddr %d:%d:%d:%d\n"
// ,(uint8_t)(ipaddr.u_addr.ip4.addr)
// ,(uint8_t)(ipaddr.u_addr.ip4.addr>>8)
// ,(uint8_t)(ipaddr.u_addr.ip4.addr>>16)
// ,(uint8_t)(ipaddr.u_addr.ip4.addr>>24));
/*Creates a new TCP protocol control block*/
pcb = tcp_new();
if (pcb == NULL) {
/*to prevent memory leaks, ensure that each allocated is deleted*/
free(pclient);
pclient = NULL;
return ESPCONN_MEM;
} else {
/*insert the node to the active connection list*/
espconn_list_creat(&plink_active, pclient); //printf("espconn_msg 3: %p\n", pclient);
tcp_arg(pcb, (void *)pclient);
tcp_err(pcb, espconn_client_err);
pclient->preverse = NULL;
pclient->pespconn = espconn;
pclient->pespconn->state = ESPCONN_WAIT;
pclient->pcommon.pcb = pcb;
tcp_bind(pcb, IP_ADDR_ANY, pclient->pespconn->proto.tcp->local_port);
#if 0
pclient->pcommon.err = tcp_bind(pcb, IP_ADDR_ANY, pclient->pespconn->proto.tcp->local_port);
if (pclient->pcommon.err != ERR_OK){
/*remove the node from the client's active connection list*/
espconn_list_delete(&plink_active, pclient);
memp_free(MEMP_TCP_PCB, pcb);
free(pclient);
pclient = NULL;
return ERR_USE;
}
#endif
/*Establish the connection*/
pclient->pcommon.err = tcp_connect(pcb, &ipaddr,
pclient->pespconn->proto.tcp->remote_port, espconn_client_connect);
if (pclient->pcommon.err == ERR_RTE){
/*remove the node from the client's active connection list*/
printf("fail to connect %s\n",__FILE__);
espconn_list_delete(&plink_active, pclient);
espconn_kill_pcb(pcb->local_port);
free(pclient);
pclient = NULL;
return ESPCONN_RTE;
}
return pclient->pcommon.err;
}
}
