upnode/lib/server_handle.js

transactional connection queue for dnode

var dnode = require('dnode');

module.exports = function (cons) {
    var d = dnode(cons);
    
    d.on('local', function (local) {
        if (local.ping === undefined) {
            local.ping = function (cb) {
                if (typeof cb === 'function') cb();
            };
        }
    });
    
    d.on('remote', function (remote) {
        var iv = setInterval(function () {
            if (typeof remote.ping === 'function') {
                var to = setTimeout(function () {
                    d.end();
                }, 10 * 10000);
                
                remote.ping(function () {
                    clearTimeout(to);
                });
            }
        }, 10 * 1000);
        
        var onend = function () {
            stream.destroy();
            clearInterval(iv);
            
            if (!d._done) {
                d._done = true;
                d.emit('done');
            }
        };
        
        stream.once('end', onend);
        stream.once('disconnect', onend);
        stream.once('close', onend);
        stream.once('error', onend);
    });
    
    var stream;
    d.on('pipe', function (target) {
        if (!stream) stream = target;
    });
    
    return d;
}