Connecting Java and Chrome extension via native messaging

Question

I'm trying to connect Chrome extension to Java application on MacOS. Using manifest version 2 for testing purposes. My question is this - what should I specify as path inside host manifest file?

host_manifest

{
    "name": "...",
    "description": "...",
    "path": "...", <---- talking about this
    "type": "stdio",
    "allowed_origins": [
        "chrome-extension://.../"
    ]   
}    

Since Java is not a native application I think I should specify something like bash file that runs jar file with Java.

start.bash

java -jar "native-messaging-test-1.0-SNAPSHOT-jar-with-dependencies.jar"

Then I specify like this

host_manifest

{
    "name": "...",
    "description": "...",
    "path": "/bunch/of/directories/start.bash", <---- changed to location of start.bash
    "type": "stdio",
    "allowed_origins": [
        "chrome-extension://.../"
    ]   
}    

But unfortunately it doesn't work saying: Failed to start native messaging host.. I think my mistake is made here.

Answer 1

Use .sh extension for the Bash file. Make sure the .sh file is executable and write the absolute path to the .sh file in "path" value in the manifest.