Sending data from Node.js back to client?

Question

I am sending a POST request to Node.js from client. In the handler of the request I am making an HTTP POST request (in Node.js) with data, which gives me a JSON data in response, then in turn with that data I am making another HTTP POST request (in Node.js) which gives me a set of data in response. Now I want to return this response data to the handler function so that, the set of data which receive as response I can send back to client. How can I achieve this?

server.route({
path:"/test",
method:"POST",
handler:function(request,reply){
    var load=request.payload;
    UserAuth(load);
    return reply({status:"Ok"});
    }

 });
function UserAuth(newdata){

request({   
    har:{
    url:"URL",
    method:"POST",
    headers:[
        {
        name:'content-Type',
        value:"application/x-www-form-urlencoded;charset=utf-8"
    }
    ],
    postData:{
        mimeType: 'application/x-www-form-urlencoded',
        params:[
            {
                name:"username",
                value:UserDetails["username"]
            },
            {
                name:"password",
                value:UserDetails["password"]
            
            },
            {
                name:"output_mode",
                value:UserDetails["output_mode"]
            
            }
        ]
    }   
}
},function(error,response,body){
    
    var obj = JSON.parse(body);
    if(obj.sessionKey != null || obj.sessionKey!=""){
         PostDataToS(newdata,obj.sessionKey);
    
    }else{
    
        console.log(error);
    }
    
});

}
 function PostDataToS(data,sessionkey){

request({   
    har:{
    url:SEARCH_URL,
    method:"POST",
    headers:[
        {
        name:'content-Type',
        value:"application/x-www-form-urlencoded;charset=utf-8"
    },
        {
            name:"Authorization",
            value:sessionkey
    }
    ],
    postData:{
        mimeType: 'application/x-www-form-urlencoded',
        params:[
            {
                name:"search",
                value:data["search"]
            },
            {
                name:"preview",
                value:"false"
            
            },
            {
                name:"output_mode",
                value:"json"
            
            },
            {
                name:"exec_mode",
                value:"oneshot"
            
            }
        
        ]
    }   
}
},function(error,response,body){
    
    obj2 = JSON.parse(body);
    var secondLayer=obj2.results;
    returnfunc(secondLayer);
    
 });

}

function returnfunc(data){
console.log("inside return func");
console.log(data)

}

I have to send data which I have received in returnfunc() back to the client in the request handler of /test.

I am using hapi.js framework on top of node.js

Kartikeya Sharma
– Kartikeya Sharma

2015-11-01 13:32:09 +00:00
Commented Nov 1, 2015 at 13:32 — Kartikeya Sharma
– Kartikeya Sharma, Commented Nov 1, 2015 at 13:32

shyam · Accepted Answer · 2015-11-02 05:09:17Z

2

Simply pass through the reply function to your callback functions

server.route({
    path:"/test",
    method:"POST",
    handler:function(request,reply){
        var load=request.payload;
        UserAuth(load);
    }
});
function UserAuth(newdata, reply){
    request({...},function(error,response,body){
        var obj = JSON.parse(body);
        if(obj.sessionKey != null || obj.sessionKey!=""){
            PostDataToS(newdata,obj.sessionKey, reply);
        } else {
            console.log(error);
        }
    });
}
function PostDataToS(data, sessionkey, reply){
    request({...},function(error,response,body){
        obj2 = JSON.parse(body);
        var secondLayer=obj2.results;
        reply.continue(obj2.results);
    });
}

answered Nov 2, 2015 at 5:09

shyam

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2 Comments

Kartikeya Sharma Over a year ago

but Still the data is not coming back to the client .The request is successful , and yes i applied your method passing the callback functions.I am able to see the data at the server level.But the client level the data at the handler of ajax request its giving me blank .

Kartikeya Sharma Over a year ago

My bad , I am sorry , My mistake . It worked . Thank you so much . i appreciate this .

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