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...
...
...
#define NX_SOURCE_CODE
#include "nx_api.h"
#include "nx_udp.h"
...
...
UINT _nx_udp_socket_bytes_available(NX_UDP_SOCKET *socket_ptr, ULONG *bytes_available)
{
NX_IP *ip_ptr;
NX_PACKET *packet_ptr;
INT count;
ip_ptr = socket_ptr -> nx_udp_socket_ip_ptr;
tx_mutex_get(&(ip_ptr -> nx_ip_protection), TX_WAIT_FOREVER);
*bytes_available = 0;
if (!socket_ptr -> nx_udp_socket_bound_next)
{
tx_mutex_put(&(ip_ptr -> nx_ip_protection));
return(NX_NOT_SUCCESSFUL);
}if (!socket_ptr -> nx_udp_socket_bound_next) { ... }
packet_ptr = socket_ptr -> nx_udp_socket_receive_head;
/* ... */
for (count = 0; count < (INT)(socket_ptr -> nx_udp_socket_receive_count); count++)
{
*bytes_available += (packet_ptr -> nx_packet_length - (ULONG)sizeof(NX_UDP_HEADER));
packet_ptr = packet_ptr -> nx_packet_queue_next;
}for (count = 0; count < (INT)(socket_ptr -> nx_udp_socket_receive_count); count++) { ... }
tx_mutex_put(&(ip_ptr -> nx_ip_protection));
return(NX_SUCCESS);
}{ ... }