CODEWITHSUNDEEP
javascriptc++http
sun
sun

Reputation: 13

Javascript send string to console application

I want to execute some javascript that will send a string of text to a c++/java console application running on the same machine as the web browser

What javascript should I execute? and how should I receive the string?

Upvotes: 0

Views: 183

Answers (1)

brm
brm

Reputation: 3806

As far as I know, there are two ways to transmit data to somewhere else using JavaScript. The first is using an XMLHttpRequest, the second is using a WebSocket. In both cases, the JavaScript code will establish a connection to another program, which in this case you want to be your C++/Java program.

In the first case, if you want to communicate using an XMLHttpRequest (or other libraries that use this, such as jQuery's get or post), you'd need to make sure that your C++/Java application starts a small webserver. This way, the JavaScript code can establish a connection to it and send data. I'm sure there are C++/Java libraries which you can use for this, but even if you can't it should be fairly simple to get something to work with just plain socket code. The text-based HTTP protocol that you need for this is not that difficult.

In the second case, you'd need to make sure that a WebSocket server is started in your C++/Java application. Your JavaScript code then can connect to this server and just send its data. I'm not that familiar with the WebSocket protocol but I suspect that it's slightly less trivial, so using a library for this would be a good choice.

Upvotes: 1

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