NAME

tcprtt —

measure TCP handshake RTT using the stats(3) framework

SYNOPSIS

tcprtt [-f] host port

The tcprtt utility reliably measures the TCP handshake round trip time using the stats(3) statistics framework.

Both IPv4 and IPv6 are supported. If the host argument is a hostname containing several A and AAAA records, one line per record will be printed.

The options are as follows:

For each address measured, a line is printed with 3 columns: address family (4 or 6), the numerical address and the measured RTT in milliseconds.

When an error occurs for one of the measurement, the -errno(2) is printed in place of the RTT.

If at least one entry returns an error, the command exits with the value of the last encountered error.