Traceroute.prototype._run = function(target) {
var self = this, args, child, lineEmitter, emitter, stderrBuffer;
args = [];
if (this._addressType === 'ipv4') {
args.push('-4');
}
else {
args.push('-6');
}
args.push('-n');
args.push('-m');
args.push(this._maxTtl);
args.push('-w');
args.push(this._waitTime);
args.push(target);
args.push(this._packetLen);
child = this._spawn('traceroute', args);
lineEmitter = new LineEmitter();
emitter = new EventEmitter();
stderrBuffer = '';
lineEmitter.on('data', function(line) {
line = line.replace(/^\s+|\s+$/g, '');
var hops = self._parseLine(line);
if (!hops) {
return;
}
hops.forEach(function(hop) {
emitter.emit('hop', hop);
});
});
child.stdout.on('data', function(chunk) {
lineEmitter.write(chunk);
});
child.stderr.on('data', function(chunk) {
stderrBuffer += chunk;
});
child.on('exit', function(code) {
var err;
if (code === 0) {
process.nextTick(function() {
emitter.emit('end');
});
}
else {
err = new Error('Error: ' + stderrBuffer);
process.nextTick(function() {
emitter.emit('error', err);
});
}
});
return emitter;
};
child.stdout.on('data', function(chunk) {
lineEmitter.write(chunk);
});