* in which a meter increase in requests that do not have the answers. * Send 'packets_count' ICMP-echoes to host 'ip_addr'. IcmpInErrors ICMPMIBINERRORS: The number of ICMP messages which the entity received but determined as having ICMP-specific errors (bad ICMP checksums, bad length, etc.). This form of the Destination Unreachable message is generated by a router or host when it is required to send. ICMPv4 Host Unreachable (Code 1) and ICMPv6 Address Unreachable (Code 3). Using the built-in Hash field (assuming it supported IPv4 checksum calculation) to calculate the checksum would result in an Exception, because because support fields, such as the Hash. We will use the simpler ICMPv6 PTB terminology from here onward to refer to either the ICMPv4 (type 3, code 4) message or the ICMPv6 (type 2, code 0) message. The resulting checksum is then written to this area. Uint32_t check_resp( char *buf, uint32_t bytes, uint32_t dst, uint16_t icmp_id) The ICMP checksum is calculated by having NULL bytes set for the checksum field during the calculation. Void decode_resp( char *, uint32_t, struct sockaddr_in *) make install kyua test -k /usr/tests/sbin/ping/Kyuafile. Uint16_t checksum( uint16_t *buffer, uint32_t size) According to RFC 1071, ICMP checksum is byte order independent. C source: "raw_ping.c" #include #include #include #include #include #include "pingscan.h" #include "raw_ping.h" #include "func.h" void fill_icmp_data( char * icmp_data, uint32_t data_size)
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