http.post return 307 error code in flutter

Question

I am using http client for flutter network call.

My request working on postman getting response properly,
But while trying with http.post it returns error code 307-Temporary Redirect,

Method Body:

static Future<http.Response> httpPost(
  Map postParam, String serviceURL) async {
Map tempParam = {"id": "username", "pwd": "password"};
var param = json.encode(tempParam);
serviceURL = "http:xxxx/Login/Login";

// temp check
Map<String, String> headers = {
  'Content-Type': 'application/json',
  'cache-control': 'no-cache',
};
await http.post(serviceURL, headers: headers, body: param).then((response) {
  return response;
});
}

Also, the same code returns a proper response to other requests and URLs. First I trying with chopper client but had same issue.

I am unable to detect that issue from my end of from server-side.

Any help/hint will be helpful

Abel Rodríguez · Accepted Answer · 2021-05-01 16:44:34Z

19

Try to put a slash / at the end of the serviceUrl. So, serviceUrl is serviceURL = "http:xxxx/Login/Login/" instead of serviceURL = "http:xxxx/Login/Login".

This works for me.

answered May 1, 2021 at 16:44

Abel Rodríguez

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3 Comments

AbdulMomen عبدالمؤمن Over a year ago

this one solved my 2 hours of searching for a solution. thank you.

justnoone Over a year ago

thank you sir, I don't know why this happening tho

Crypted420 Oct 30 at 22:09

worked!!! fascinating. Even claude couldn't help.

encubos · Accepted Answer · 2020-04-08 19:40:25Z

1

You need to find a way to follow redirect.

Maybe postman is doing that.

Read this >> https://api.flutter.dev/flutter/dart-io/HttpClientRequest/followRedirects.html

Can you try with using get instead of post? At least to try and see what happend

In the documentation said:

Automatic redirect will only happen for "GET" and "HEAD" requests
only for the status codes 

HttpStatus.movedPermanently (301), 
HttpStatus.found (302), 
HttpStatus.movedTemporarily (302, alias for HttpStatus.found), 
HttpStatus.seeOther (303),
HttpStatus.temporaryRedirect (307)

answered Apr 8, 2020 at 19:40

encubos

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Comments

mLstudent33 · Accepted Answer · 2021-09-11 04:16:44Z

1

@Abel's answer above is correct but I had to switch from using:

Uri url = Uri.https(defaultUri, path);

to

Uri url = Uri.parse('https://todo-fastapi-flutter.herokuapp.com/plan/');

to get that last / after plan.

The first way kept dropping it so I was getting 307 errors.

flutter.dev shows a full example:

Future<http.Response> createAlbum(String title) {
  return http.post(
    Uri.parse('https://jsonplaceholder.typicode.com/albums'),
    headers: <String, String>{
      'Content-Type': 'application/json; charset=UTF-8',
    },
    body: jsonEncode(<String, String>{
      'title': title,
    }),
  );
}

here: https://flutter.dev/docs/cookbook/networking/send-data#2-sending-data-to-server

answered Sep 11, 2021 at 4:16

mLstudent33

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Comments

Dinesh Bala · Accepted Answer · 2023-04-26 15:28:46Z

1

Putting / at the end of the URL worked for me.

Example: https://api.com/v1/book/list gives me a temporary redirect error; while, https://api.com/v1/book/list/ worked. (/ at the end)

answered Apr 26, 2023 at 15:28

Dinesh Bala

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Comments

Mohanakrrishna · Accepted Answer · 2021-07-09 12:20:50Z

0

keeping https instead of http in the URL it is helping me.

answered Jul 9, 2021 at 12:20

Mohanakrrishna

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Comments

Wai Yan · Accepted Answer · 2023-01-03 08:25:49Z

0

For Dio Http Client, use Dio Option follow redirect as True

getDioOption(){
return BaseOptions(connectTimeout: 30, receiveTimeout: 30,
followRedirects: true);
}

answered Jan 3, 2023 at 8:25

Wai Yan

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