[jerryscript-debugger] Fail to resume/step into/step over when debugging with /bin/jerry built in JerryScript

[qiaojingx]

Description

When using jerryscript-debugger.sh to debug with /bin/jerry executable inside JerryScript. Breakpoint can be added and removed. But Resume/Step into/Step over/Step out/Step doesn't work. It wil cause "unhandled protocol message type: xx". After clicking once, the icon becomes disabled.

Test Code

JerryScript Debugger & Chrome DevTools Proxy;
zephyr.js/samples/Buffer.js;

Steps to Reproduction

1. $ cd jerryscript
2. $ python tools/build.py --jerry-debugger=on --jerry-libc=off
3. $ ./build/bin/jerry --start-debug-server --log-level 2 $ZJS_BASE/samples/Buffer.js
4. Have Chrome running and visit the URL chrome://inspect, and click "Open dedicated DevTools for Node."
5. $ cd jerryscript-debugger-ts
6. $ yarn install
7. $ ./jerry-debugger.sh
8. Click Resume/Step into/Step over/Step out/Step

Actual Result

After step7: Error message "incorrect target debugger version detected: 3 expected 2 is print after connection setup.

After step 8: Step into/Step over/Step out/Step icon become disabled.
Error message "unhandled protocol message type: xx" is print in terminal.
The icons are disabled:

Error message in terminal:

Expected Result

No error occurs.
Able to use resume/Step into/Step over/Step out/Step to debug.

Test Builds

Project	Commit Id	Target Device	Test Date	Result
jerryscript	d672d1e	Linux	Apr. 27, 2018	Fail
jerryscript-debugger-ts	ed66d7d	Linux	Apr. 27, 2018	Fail

Additional Information

[grgustaf]

OK, sorry yeah if you are able to characterize a bug like this without reference to ZJS, e.g. using bin/jerry, then it would be best to report directly on the jerryscript-debugger-ts project.

[qiaojingx]

We have created a issue in jerryscript-debugger-ts/#12 for using bin/jerry to debug JS file in JerryScript. The error message is also print when connecting and debugging through Resume/Step into/Step over/Step out/Step. The different from issue #1877 is Resume/Step into/Step over/Step out/Step not disabled after one click.