// Callback for inbound tcp packets.
STATIC err_t _lwip_tcp_recv(void *arg, struct tcp_pcb *tcpb, struct pbuf *p, err_t err) {
lwip_socket_obj_t *socket = (lwip_socket_obj_t*)arg;
if (p == NULL) {
// Other side has closed connection.
DEBUG_printf("_lwip_tcp_recv[%p]: other side closed connection\n", socket);
socket->state = STATE_PEER_CLOSED;
exec_user_callback(socket);
return ERR_OK;
}
if (socket->incoming.pbuf == NULL) {
socket->incoming.pbuf = p;
} else {
#ifdef SOCKET_SINGLE_PBUF
return ERR_BUF;
#else
pbuf_cat(socket->incoming.pbuf, p);
#endif
}
exec_user_callback(socket);
return ERR_OK;
}
// "Poll" (idle) callback to be called ASAP after accept callback
// to execute Python callback function, as it can't be executed
// from accept callback itself.
STATIC err_t _lwip_tcp_accept_finished(void *arg, struct tcp_pcb *pcb)
{
lwip_socket_obj_t *socket = (lwip_socket_obj_t*)arg;
tcp_poll(pcb, NULL, 0);
exec_user_callback(socket);
return ERR_OK;
}
// Callback for inbound tcp packets.
STATIC err_t _lwip_tcp_recv(void *arg, struct tcp_pcb *tcpb, struct pbuf *p, err_t err) {
lwip_socket_obj_t *socket = (lwip_socket_obj_t*)arg;
if (p == NULL) {
// Other side has closed connection.
DEBUG_printf("_lwip_tcp_recv[%p]: other side closed connection\n", socket);
socket->state = STATE_PEER_CLOSED;
exec_user_callback(socket);
return ERR_OK;
} else if (socket->incoming.pbuf != NULL) {
// No room in the inn, let LWIP know it's still responsible for delivery later
return ERR_BUF;
}
socket->incoming.pbuf = p;
exec_user_callback(socket);
return ERR_OK;
}
