#!/bin/bash

set -eu

PORT=6380;

RUST_LOG=info ./run.sh --port $PORT 2>/dev/null & sleep 1; # Give it some time to start.

i=0;

i=$((i+1)); printf 'Running test #%d...' "$i";
response=$(printf "*1\r\n\$4\r\nPING\r\n" | nc localhost $PORT);
if [ "$response" = '+PONG\r\n' ]; then
  printf ' PASSED'
else
  printf ' FAILED\nGot:\n%s\n\n' "$response"
fi;
sleep 0.1;

pkill redis-server;

Running test #1... FAILED
Got:
+PONG

response='+PONG\r\n';
if [ "$response" = '+PONG\r\n' ]; then
  echo Equal
else
  echo Different
fi;

Running test #1...++ printf '*1\r\n$4\r\nPING\r\n'
++ nc localhost 6380
+ response=$'+PONG\r'
+ '[' $'+PONG\r' = '+PONG\r\n' ']'
+ printf ' FAILED\nGot:\n%s\n\n' $'+PONG\r'
 FAILED
Got:
+PONG

Running test #1...++ printf '*1\r\n$4\r\nPING\r\n'
++ nc localhost 6380
+ response=$'+PONG\r'
+ '[' $'+PONG\r' = '+PONG\r' ']'
+ printf ' FAILED\nGot:\n%s\n\n' $'+PONG\r'
 FAILED
Got:
+PONG

while true; do
   for ((i=0;i "/proc/$PID/fd/6";
      sleep 1;
   done
   while read -t 0.01 dataB; do echo "Received from process B: $dataB"; done
done

while true; do
   for ((i=0;i /dev/tty; done
done

exec 6> >(nc -lU unixSocket | PID=$$ bash processA)

exec 5In Prozess B:
After this i can write to the unix socket with stdout,
read from the unix socket with "/proc/$PID/fd/5"
write to terminal with /dev/ttx

and stdin is on keyboard.



First Question: Why are the file descriptors 5 and 6 not inherited from the subprocesses opened in the process substitution?

I have to get them over exporting the PID -why?

Second Question: process A and B can communicate bidirectional, but i need to open two more main processes, which are executing the exec command for file descriptor redirection and starting the process substituion

curl -d '{"Name":"Lorem", "age":"34"}' -H "Content-Type: application/json" -X POST http://:8080/ 

#!/bin/bash

while true; do
   echo -e "HTTP/1.1 200 OK\n\n
Title
$(date)" \
  | nc -l -k -p 8080 -q 1;
  nc -l -k -p 8080 -q 1 | cat - | grep -o '{...\+}';
done

mkfifo commands
mkfifo nc_responses

nc -k -l 47201 >commands nc_responses
done 

$ nc localhost 47201 <<< 'command 1'
$ nc localhost 47201 <<< 'command 2'
Ran command 1
$ nc localhost 47201 <<< 'command 3'
Ran command 2
$ nc localhost 47201 <<< 'command 4'
Ran command 3