Push live terminal output to upstream

[hsntgm]

Folks, when the user starts a scan, service is waiting for read buffersize, only after flush() It writes process stdout to OutputStream. In long waiting scans, that causes client thinks the process is lost or drop-in timeout. We need to push terminal process live stdout to client to keep interaction. Playing with read buffersize not doing well.

Current behaviour:

Expected behaviour:

Here the blamed lines that we need to figure out. Any opinion?

pspenit/src/main/java/io/github/psauxit/pspenit/Tools.java

Lines 260 to 273 in 3fa78cf

	private Response getStreamResponse(List<String> cmd) throws IOException {
	log.info("command: " + String.join(" ", cmd));
	Process process = new ProcessBuilder().command(cmd).redirectErrorStream(true).start();
	return Response.ok((StreamingOutput) outputStream -> copyStream(process.getInputStream(), outputStream)).build();
	}
	private void copyStream(InputStream source, OutputStream target) throws IOException {
	byte[] buf = new byte[1*8];
	int length;
	while ((length = source.read(buf)) > 0) {
	target.write(buf, 0, length);
	target.flush();
	}
	}

pspenit/src/main/java/io/github/psauxit/pspenit/Tools.java

Line 60 in 3fa78cf

return getStreamResponse(cmd);

[hsntgm]

It seems here we need websocket, session, persistent stream @psaux-it/development .
This simple Request - Response code is not adjustable to solve our issue.