NodeJs - http - sync problem with two requests
I need to make two http-requests, which I would like to have in two seperated functions. I thought synchronously:
.. make the first http-request and return the response
.. pass the response to the second function which makes the second http-request
here the first function:
function getObjTypes(cfg)
// request-options
var post_options =
host: cfg.apiHost,
port: cfg.apiPort
;
// request
var ObjectTypes = ;
var post_req = http.request(post_options, function(res)
res.setEncoding('utf8');
let resBody = '';
res.on('data', function (chunk)
resBody += chunk;
);
res.on("end", () =>
var resObject = JSON.parse(resBody);
return ObjectTypes; // Here the ObjectTyes needs to be passed as a return
);
);
post_req.end();
I know whats is wrong.. the http-request is async, so the second function is called before the response fron the first function is there.. but how would I "fix" this?
node.js http asynchronous promise synchronization
asked Nov 12 '18 at 13:19
ArschibaldArschibald
105
add a comment |
I need to make two http-requests, which I would like to have in two seperated functions. I thought synchronously:
.. make the first http-request and return the response
.. pass the response to the second function which makes the second http-request
here the first function:
function getObjTypes(cfg)
// request-options
var post_options =
host: cfg.apiHost,
port: cfg.apiPort
;
// request
var ObjectTypes = ;
var post_req = http.request(post_options, function(res)
res.setEncoding('utf8');
let resBody = '';
res.on('data', function (chunk)
resBody += chunk;
);
res.on("end", () =>
var resObject = JSON.parse(resBody);
return ObjectTypes; // Here the ObjectTyes needs to be passed as a return
);
);
post_req.end();
I know whats is wrong.. the http-request is async, so the second function is called before the response fron the first function is there.. but how would I "fix" this?
node.js http asynchronous promise synchronization
asked Nov 12 '18 at 13:19
ArschibaldArschibald
105
2
Possible duplicate of How do I return the response from an asynchronous call?
– yeya
Nov 12 '18 at 13:30
Is there a specific reason you need to usehttp-request? You may want to look at a library likeaxiosthat returns Promises and then look intoasync/awaitto see how you can write synchronous-style code while working with requests
– dpopp07
Nov 12 '18 at 13:43
add a comment |
I need to make two http-requests, which I would like to have in two seperated functions. I thought synchronously:
.. make the first http-request and return the response
.. pass the response to the second function which makes the second http-request
here the first function:
function getObjTypes(cfg)
// request-options
var post_options =
host: cfg.apiHost,
port: cfg.apiPort
;
// request
var ObjectTypes = ;
var post_req = http.request(post_options, function(res)
res.setEncoding('utf8');
let resBody = '';
res.on('data', function (chunk)
resBody += chunk;
);
res.on("end", () =>
var resObject = JSON.parse(resBody);
return ObjectTypes; // Here the ObjectTyes needs to be passed as a return
);
);
post_req.end();
I know whats is wrong.. the http-request is async, so the second function is called before the response fron the first function is there.. but how would I "fix" this?
node.js http asynchronous promise synchronization
asked Nov 12 '18 at 13:19
ArschibaldArschibald
105
I need to make two http-requests, which I would like to have in two seperated functions. I thought synchronously:
.. make the first http-request and return the response
.. pass the response to the second function which makes the second http-request
here the first function:
function getObjTypes(cfg)
// request-options
var post_options =
host: cfg.apiHost,
port: cfg.apiPort
;
// request
var ObjectTypes = ;
var post_req = http.request(post_options, function(res)
res.setEncoding('utf8');
let resBody = '';
res.on('data', function (chunk)
resBody += chunk;
);
res.on("end", () =>
var resObject = JSON.parse(resBody);
return ObjectTypes; // Here the ObjectTyes needs to be passed as a return
);
);
post_req.end();
I know whats is wrong.. the http-request is async, so the second function is called before the response fron the first function is there.. but how would I "fix" this?
node.js http asynchronous promise synchronization
node.js http asynchronous promise synchronization
asked Nov 12 '18 at 13:19
ArschibaldArschibald
105
asked Nov 12 '18 at 13:19
ArschibaldArschibald
105
asked Nov 12 '18 at 13:19
ArschibaldArschibald
105
asked Nov 12 '18 at 13:19
ArschibaldArschibald
105
asked Nov 12 '18 at 13:19
ArschibaldArschibald
105
105
2
Possible duplicate of How do I return the response from an asynchronous call?
– yeya
Nov 12 '18 at 13:30
Is there a specific reason you need to usehttp-request? You may want to look at a library likeaxiosthat returns Promises and then look intoasync/awaitto see how you can write synchronous-style code while working with requests
– dpopp07
Nov 12 '18 at 13:43
add a comment |
2
Possible duplicate of How do I return the response from an asynchronous call?
– yeya
Nov 12 '18 at 13:30
Is there a specific reason you need to usehttp-request? You may want to look at a library likeaxiosthat returns Promises and then look intoasync/awaitto see how you can write synchronous-style code while working with requests
– dpopp07
Nov 12 '18 at 13:43
2
2
Possible duplicate of How do I return the response from an asynchronous call?
– yeya
Nov 12 '18 at 13:30
Possible duplicate of How do I return the response from an asynchronous call?
– yeya
Nov 12 '18 at 13:30
Is there a specific reason you need to use
http-request? You may want to look at a library like axios that returns Promises and then look into async/await to see how you can write synchronous-style code while working with requests– dpopp07
Nov 12 '18 at 13:43
Is there a specific reason you need to use
http-request? You may want to look at a library like axios that returns Promises and then look into async/await to see how you can write synchronous-style code while working with requests– dpopp07
Nov 12 '18 at 13:43
add a comment |
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2
Possible duplicate of How do I return the response from an asynchronous call?
– yeya
Nov 12 '18 at 13:30
Is there a specific reason you need to use
http-request? You may want to look at a library likeaxiosthat returns Promises and then look intoasync/awaitto see how you can write synchronous-style code while working with requests– dpopp07
Nov 12 '18 at 13:43