A web pipe server.

noderunner.js

// Run this somewhere with a command you want to pipe stuff through.
//
// On a machine that needs data processed, run this:
//    curl --data-binary @/some/file http://server:port/ > output

var http = require('http');
var spawn = require('child_process').spawn;

// 0 == node, 1 == [this script]
var PORT = parseInt(process.argv[2]);
var CMD = process.argv[3];
if (!CMD) {
    console.log("Need a command to run.");
    throw("Need a command to run.");
}
var ARGS = process.argv.slice(4);

function handleReq(req, res) {
    res.socket.setTimeout(0);
    res.writeHead(200, {'Content-Type': 'text/plain'});
    var child = spawn(CMD, ARGS);
    req.pipe(child.stdin);
    child.stdout.pipe(res);
}

http.createServer(handleReq).listen(PORT, "0.0.0.0");
console.log('Server running at http://0.0.0.0:' + PORT + '/ with ', CMD, ARGS);