Add callback function to get JSON Output strings #360

	name: test
	on: [push, pull_request]
	jobs:
	cppcheck-test:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: install dependencies
	run: \|
	sudo apt-get -y update && sudo apt-get install -y cppcheck && \
	cppcheck . --force --inline-suppr
	build-test-latest:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: install dependencies
	run: \|
	sudo apt-get -y update && sudo apt-get install -y build-essential
	- name: build
	run: \|
	./configure && make && make check
	timeout 300 src/iperf3 -s &
	./test_commands.sh localhost
	build-test-ubuntu-20_04:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v4
	- name: install dependencies
	run: \|
	sudo apt-get -y update && sudo apt-get install -y build-essential
	- name: build
	run: \|
	./configure && make && make check
	timeout 300 src/iperf3 -s &
	./test_commands.sh localhost

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