1config BR2_PACKAGE_TCPING 2 bool "tcping" 3 help 4 tcping does a TCP connect to the given ip/port 5 combination. The user can specify a timeout in seconds. This 6 is useful in shell scripts running in firewalled 7 environments. Often SYNs are just being dropped by 8 firewalls, thus connection establishment will be retried 9 several times (for minutes) until a TCP timeout is 10 reached. With tcping it is possible to check first if the 11 desired port is reachable and then start connection 12 establishment. 13 14 https://github.com/mkirchner/tcping 15