Unable to send post form using http Library because of call of Uri.encodeQueryComponent with 2 parameters instead 1 ...

[DartBot]

<img src="https://avatars.githubusercontent.com/u/6410144?v=3" align="left" width="96" height="96"hspace="10"> Issue by ioull
Originally opened as dart-lang/sdk#16131

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What steps will reproduce the problem?
create a dart file like this :
import 'package:http/http.dart' as http;

main() {
  http.post('http://httpbin.org/post', body: {'key1': 'value1', 'key2': 'value2'}).then((response) {
    print("Response status: ${response.statusCode}");
    print("Response body: ${response.body}");
  });
}

What is the expected output? What do you see instead?
I expect to get a request with form data ... BUT i got
Unhandled exception:
No static method 'encodeQueryComponent' declared in class 'Uri'.

NoSuchMethodError: incorrect number of arguments passed to method named 'encodeQueryComponent'
Receiver: Type: class 'Uri'
Tried calling: encodeQueryComponent("key1", encoding: Instance of 'Utf8Codec')
Found: encodeQueryComponent(String)

­0 _rootHandleUncaughtError.<anonymous closure>.<anonymous closure> (dart:async/zone.dart:677)

­1 _asyncRunCallback (dart:async/schedule_microtask.dart:18)

­2 _asyncRunCallback (dart:async/schedule_microtask.dart:21)

­3 _createTimer.<anonymous closure> (dart:async-patch/timer_patch.dart:11)

­4 _Timer._createTimerHandler._handleTimeout (timer_impl.dart:151)

­5 _Timer._createTimerHandler._handleTimeout (timer_impl.dart:159)

­6 _Timer._createTimerHandler._handleTimeout (timer_impl.dart:159)

­7 _Timer._createTimerHandler.<anonymous closure> (timer_impl.dart:166)

­8 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:93)

What version of the product are you using? On what operating system?
http-0.9.2+1 library

Please provide any additional information below.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/6410144?v=3" align="left" width="48" height="48"hspace="10"> Comment by ioull

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After exchange on #irc channel It seems that pubspec of the http package wasn't updated to require an sdk > 1.1 !

[11:33] <ioull_> Indead the method Uri.encodeQueryComponent is declared with only one parameter but it is called with 2 parameters in http lib
[11:34] <floitsch> To clarify: you are using the http package v0.9.2+1 ?
[11:34] <floitsch> what sdk do you use?
[11:36] <ioull_> sorry : Dart SDK version 1.0.0.10_r30798
[11:37] <floitsch> The bleeding-edge version of encodeQueryComponent allows two arguments.
[11:37] <floitsch> I'm guessing the pubspec of the http package wasn't updated to require an sdk > 1.0
[11:38] <floitsch> ioull_: two things you can do.
[11:38] <ioull_> OK ! So I need update my sdk or downgrade my http lib ;-)
[11:38] <floitsch> 1. downgrade to an earlier http package. (specify in the pubspec file which version you want)
[11:38] <floitsch> 2. upgrade the sdk.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/8631949?v=3" align="left" width="48" height="48"hspace="10"> Comment by floitschG

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dart-lang/sdk@a8a3c2a introduced usage of encodeQueryComponent with two arguments, but didn't update the pubspec file.

https://codereview.chromium.org/102973002/diff/1/pkg/http/lib/src/utils.dart

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cc @nex3.
Added Area-Pkg, Triaged labels.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/188?v=3" align="left" width="48" height="48"hspace="10"> Comment by nex3

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We as a team need to talk about how to handle packages' SDK constraints in general. It's not feasible for every package to track down the minimum SDK version that supports every feature used in a package.

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Added Started label.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/5479?v=3" align="left" width="48" height="48"hspace="10"> Comment by sethladd

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Hi,

This is marked as Started. Are we still working on it?

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Removed Priority-Unassigned label.
Added Priority-Low, Pkg-Http labels.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/188?v=3" align="left" width="48" height="48"hspace="10"> Comment by nex3

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The http package now has an appropriate SDK constraint.

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Added Fixed label.