check_fping

Features / Improvements - Includes the code from fping (in a modified state) instead of calling it and parsing the output. - Takes care of 'Unable to parse ping output' and such. - Fixes the 1 second maximum threshold value in check_fping, which was hardcoded in the fping source. - Removes the ridiculous appearance of precision down to a millionth of a millisecond (0.1000000 RTA), and instead gives proper and valuable output in a sensible manner. - Both check_ping and check_fping command line syntax works just fine, so it could be used to replace either one (-n and -p both denote number of packets to send). Drawbacks: Requires root privileges for raw sockets (if run setsuid it drops privileges again after obtaining the socket). This is common to all ping programs though. ToDo: Parallellize packet sending. This requires a different packet identity encoding algorithm, as well as some manner of delay so that hosts don't think they're being flooded, so I'll wait a while with this.

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