diff options
| -rwxr-xr-x | ircmsg.sh | 17 |
1 files changed, 16 insertions, 1 deletions
@@ -24,12 +24,22 @@ portfd='' # matching "PING". Retrieves value of that line (without the PING prefix), and # returns so the corresponding PONG can be sent. # +# Note: This function will timeout when reading from the server 100 times +# function get_ping { local portfd=${1} + local emptymax=50 + local emptycount=0 # get ping - while [[ ${ping:0:4} != 'PING' ]]; do + while [[ ${emptycount} -lt ${emptymax} ]]; do read ping <&${portfd} + + # If first four match PING, break and process + [[ ${ping:0:4} == 'PING' ]] && break + + # If response is empty, increment empty counter + [[ ${ping} == '' ]] && emptycount=$(($emptycount + 1)) done ping=${ping:5} @@ -87,6 +97,11 @@ function main { # Respond to the server with its ping value (ping pong) ping=$(get_ping ${portfd}) + if [[ ${ping} == '' ]]; then + echo "ERROR: No PING response received. Cannot continue." + exit 1 + fi + echo "PONG ${ping}" >&${portfd} # Send message to specified channel |