SDL_Struct
Name
UDPpacket -- used with UDPsockets to send and receive data.
Structure Definition
typedef struct {
int channel; /* The src/dst channel of the packet */
Uint8 *data; /* The packet data */
int len; /* The length of the packet data */
int maxlen; /* The size of the data buffer */
int status; /* packet status after sending */
IPaddress address; /* The source/dest address of an incoming/outgoing packet */
} UDPpacket;
Structure Data
channel |
The (software) channel number for this packet. This can also be used as a priority value for the packet. If no channel is assigned, the value is -1. |
data |
The data contained in this packet, this is the meat. |
len |
This is the meaningful length of the data in bytes. |
maxlen |
This is size of the data buffer, which may be larger than the meaningful length. This is only used for packet creation on the senders side. |
status |
This contains the number of bytes sent, or a -1 on errors, after sending. This is useless for a received packet. |
address |
This is the resolved IPaddress to be used when sending, or it is the remote source of a received packet. |
Description
This struct is used with UDPsockets to send and receive data. It also helps keep track of a packet's sending/receiving settings and status. The channels concept helps prioritize, or segregate differing types of data packets.