npm install co-request

node --harmony simple.js

"use strict";
 
let co = require("co");
let request = require("co-request");
 
co(function* () {
  // You can also pass options object, see http://github.com/mikeal/request docs 
    let result = yield request("http://google.com"); 
    let response = result;
    let body = result.body;
 
    console.log("Response: ", response);
    console.log("Body: ", body);
}).catch(function (err) {
    console.err(err);
});

"use strict";
 
co(function* () {
    let result = yield request({
        uri: "http://google.com",
        method: "POST"
    });
})();
To pipe request you should use small helper (thanks to greim):

function pipeRequest(readable, requestThunk){
  return function(cb){
    readable.pipe(requestThunk(cb));
  }
}
 
//..and then: 
 
  var value = http://www.mamicode.com/yield pipeRequest(this.req, request({...}));