title: Argument error, options.body in node.js?
body: <p>what is the problem i don't know please help to solve this. when i post data then below error shows on terminal. Attach is the code also.</p>
  
  <pre><code>Error: Argument error, options.body.
      at Request.init (/usr/lib/nodejs/request/index.js:351:13)
      at new Request (/usr/lib/nodejs/request/index.js:124:8)
      at Object.request (/usr/lib/nodejs/request/index.js:1279:11)
      at Request._callback (/var/www/html/nodeproject/helloworld/controllers/login.js:68:11)
      at Request.self.callback (/usr/lib/nodejs/request/index.js:148:22)
      at Request.EventEmitter.emit (events.js:98:17)
      at Request.&lt;anonymous&gt; (/usr/lib/nodejs/request/index.js:896:14)
      at Request.EventEmitter.emit (events.js:117:20)
      at IncomingMessage.&lt;anonymous&gt; (/usr/lib/nodejs/request/index.js:847:12)
      at IncomingMessage.EventEmitter.emit (events.js:117:20)
  </code></pre>
  
  <p>below is my code here am posting data using json.</p>
  
  <pre><code>module.exports.controller = function(BASE) {
           var token_array = new Array();
  
           BASE.APP.get('/login', function(req, res)
      {
          res.render('pages/login');
               //res.sendFile(__dirname + '/login.html');
  
      });
  
  
  
   BASE.APP.post("/login", BASE.urlEncodedParser, function(req, response)
             {
  
              var devicetoken = req.usersession.devicetoken;
              var body = req.body;
              req.usersession.username = body.username;
  
                  console.log(req.body);
                  var userData={
                      "deviceToken" : devicetoken,
                      "password" : body.pwd,
                      "username" : body.username
                  };
                  var digest = BASE.utils.hmac("sha1", "A12AA418-1F28-4464-8B67-29CBD02BC45C-F048B14F-F3E3-4F97-A522-F2275A364A0E", JSON.stringify(userData));
                  var postData = {
                      "deviceToken" : devicetoken,
                      "password"    : body.pwd,
                      "username"    : body.username,
                      "digest"      : digest
                  };
  
                  var sPostData = BASE.utils.base64encode(BASE.utils.base64encode(JSON.stringify(postData)));
                  BASE.request({
                      url: "http://example.com/authenticate/",
                      method: "POST",
                      headers: {
                          "content-type": "application/json",
                      },
                      body: sPostData
                  },
                  function(err,result,body){
                      //console.log(JSON.stringify(postData));
  
                      var body = JSON.parse(body);
                      req.usersession.token = body.token;
  
                      /*********************************has login permission***************************************/
                      var loginData={
  
  
                           "permission" : '08008749-F3A5-480B-A2B2-C21CEFED70F4',
                          "token" : req.usersession.token
  
                      };
  
  
  
                      var logindigest = BASE.utils.hmac("sha1", "A12AA418-1F28-4464-8B67-29CBD02BC45C-F048B14F-F3E3-4F97-A522-F2275A364A0E", JSON.stringify(loginData));
                      var loginpostData = {
  
                                   "permission" : '08008749-F3A5-480B-A2B2-C21CEFED70F4',
                                  "token" : req.usersession.token,
                                  "digest"      :  logindigest
  
                                    };
  
                      BASE.request({
                              url : "http://example.com/hasPermission/",
                              method :"POST",
                              headers : {
  
                                          "content-type": "application/json",
                                        },
                              body :loginpostData
                                  },
                      function (err,result1,body) {
  
                          console.log(body);          
  
                      });     
  
                      //response.redirect(301, '/contacts');
                  }); 
  
              }); 
  
  }
  </code></pre>
  
  <p>i am using same type code of another file what it should not give any error but this file show me </p>