TCPIP_ICMP_ECHO_REQUEST Structure

typedef struct _tag_TCPIP_ICMP_ECHO_REQUEST {
    TCPIP_NET_HANDLE netH;
    IPV4_ADDR targetAddr;
    uint16_t sequenceNumber;
    uint16_t identifier;
    uint8_t* pData;
    uint16_t dataSize;
    void (* callback)(const struct _tag_TCPIP_ICMP_ECHO_REQUEST* pReqData, TCPIP_ICMP_REQUEST_HANDLE icmpHandle, TCPIP_ICMP_ECHO_REQUEST_RESULT result);
} TCPIP_ICMP_ECHO_REQUEST;

ICMP Request Data Structure.

This structure defines the information required for sending an ICMP request that contains user data.

When the callback is made with an error result, the TCPIP_ICMP_ECHO_REQUEST structure may identify the request, if no reply was received (for example timeout).