[feature] implement _write and _read

Author: yawnt

lib/caronte/streams/proxy.js

@@ -29,12 +29,18 @@ ProxyStream.prototype.onFinish = function() {
 
 }
 
-ProxyStream.prototype.onResponse = function() {
-
+ProxyStream.prototype.onResponse = function(proxyRes) {
+  this.proxyRes = proxyRes;
 }
 
-ProxyStream.prototype._read = function() {}
+ProxyStream.prototype._write = function(chunk, encoding, callback) {
+  this.proxyReq.write(chunk, encoding, callback);
+};
+
+ProxyStream.prototype._read = function(size) {
+  var chunk = (this.proxyRes ? this.proxyRes.read(size) : '') || '';
 
-ProxyStream.prototype._write = function() {}
+  this.push(chunk);
+};
 
 require('util').inherits(ForwardStream, Duplex);