Pub: Unable to download packages from https://pub.dartlang.org

[samueladekunle]

I am trying to build an application using the Flutter SDK, but on running flutter packages get in the application's directory, what I get is

Running "flutter packages get" in startup_namer...
Got socket error trying to find package cupertino_icons at https://pub.dartlang.org.
pub get failed (69) -- attempting retry 1 in 1 second...

This was initially reported on Flutter's issues page here, but I was directed to post the issue here.

I am not behind any proxy connection, and am located in Nigeria. A fellow Nigerian also complained about this on stackoverflow.

flutter doctor -v prints

[√] Flutter (Channel beta, v0.8.2, on Microsoft Windows [Version 10.0.17134.286], locale en-US)
    • Flutter version 0.8.2 at C:\Flutter\flutter
    • Framework revision 5ab9e70727 (4 weeks ago), 2018-09-07 12:33:05 -0700
    • Engine revision 58a1894a1c
    • Dart version 2.1.0-dev.3.1.flutter-760a9690c2

[!] Android toolchain - develop for Android devices (Android SDK 28.0.0)
    • Android SDK at C:\Users\AUNTYHANNAH\AppData\Local\Android\Sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.0
    • ANDROID_HOME = C:\Users\AUNTYHANNAH\AppData\Local\Android\Sdk
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b02)
    X Android license status unknown.

[√] Android Studio (version 3.1)
    • Android Studio at C:\Program Files\Android\Android Studio
    X Flutter plugin not installed; this adds Flutter specific functionality.
    X Dart plugin not installed; this adds Dart specific functionality.
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b02)

[√] VS Code (version 1.27.2)
    • VS Code at C:\Users\AUNTYHANNAH\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 2.18.0

[√] VS Code, 64-bit edition (version 1.17.1)
    • VS Code at C:\Program Files\Microsoft VS Code
    • Flutter extension version 2.18.0

[!] Connected devices
    ! No devices available

! Doctor found issues in 2 categories.

Solution

Edited by member of this repository: This is not a solution, hence, I have deleted it as it was confusing people -- see previous version of this common on github, if you really want to know what it said. Notice that https://dartlang-pub-dev.appspot.com/ is a staging site with outdated data, do not use it!

[HemlockBane]

Hello Samuel, has your issue been resolved? Mine isn't working either.

[a-oboh]

@samueladekunle I'm also in Nigeria and i faced this same issue. I then resolved to using a VPN, and it worked for me. I think we in Nigeria and some other parts of the world have this issue with some packages.

[natebosch]

Is the https://pub.dartlang.org/ site reachable in a browser?

cc @mit-mit

[samueladekunle]

@HemlockBane I had to alternate in between a public Wi-Fi and a VPN service for some weeks. But rather strangely, after switching from Windows to Linux, I have not experienced the same issue on my home network.

[far11ven]

I'm facing the same issue, @natebosch https://pub.dartlang.org/ is reachable in my browser.
Could it be coz of Corporate laptop I'm using having restrictions? I'm in india btw

[leodavinci1]

Here in Brazil the website https://pub.dartlang.org/ that flutter uses to get the packages with flutter packages get isn't reachable. I tried using TunnelBear VPN connecting to a USA network and it all worked fine.

[jonasfj]

@leodavinci1, could you check if this is ipv6 related (or DNS related, try using 8.8.8.8)

[leodavinci1]

@jonasfj Tested with 8.8.8.8 DNS config and the website https://pub.dartlang.org/ worked perfectly. When I removed that DNS config, website became unreachable again.

[chenxiaoyanemile]

Hi , i also got this problem in China , do you have a solve way for me ? thanks .

[jonasfj]

@chenxiaoyanemile, you can use the Chinese community mirror.

[chenxiaoyanemile]

@jonasfj Hi , thank you for your answer . but i have try it , it doesn't work for me .

[chenxiaoyanemile]

fixed it in China with this method.

https://www.jianshu.com/p/c524d4ffe605.

[fioan89]

Got the same issue recently while trying to setup flutter. Turn's out I did not set-up the proxy correctly.
If you are also behind a proxy then please make sure you strictly follow the format from https://dart.dev/tools/pub/troubleshoot#pub-get-fails-from-behind-a-corporate-firewall

If you are on Windows and you run the flutter/pub command from PowerShell, the usual recommendation set https_proxy=proxy.yourproxy.com:8080 will not work. The correct ways is:
$Env:https_proxy="proxy.yourproxy.com:8080"

[jonasfj]

@fioan89,
Uh, nice trick with PowerShell, please consider contributing to the documentation page you referenced :)

[fioan89]

@jonasfj got it. Thanks for the tip.

[lvcster]

Running '$env:https_proxy='proxy.yourproxy.com:8080' on Powershell gives and error =>_The filename, directory name, or volume label syntax is incorrect._
Any help?

[lvcster]

$

I also tried running without the $, like 'env:https_proxy=proxy.yourproxy.com:8080'. I am not sure if I am missing something.

[lvcster]

I found the problem and fixed it...
set https_proxy=proxy.yourproxy.com:8080 must be wrapped within single quotes like
_set https_proxy='proxy.yourproxy.com:8080'_. This is in Windows.

[fioan89]

:( weird, according to this Microsoft page it should work.

What version of PowerShell do you have?
Are you using some kind of special characters in the proxy name? Anything outside a-z A-Z or 0-9?

[fioan89]

Running '$env:https_proxy='proxy.yourproxy.com:8080' on Powershell gives and error =>_The filename, directory name, or volume label syntax is incorrect._
Any help?

Are you sure you are running this with PowerShell and not Command Prompt? :) I just ran the expression in Windows Command Prompt and it returns the exact same error as you mentioned.

[tejismcool]

Had thesame issue from Nigeria. I think the issue maybe from my network provider. I fixed it following by declaring PUB_HOSTED_URL as a system environment variable and give it the value https://pub.dev/

You may need to restart your command prompt window for the changes to take effect.
don't know if it helps

[vishnuagbly]

please do not just copy blindly above solution given by @samueladekunle , you may need to create PUB_HOSTED_URI, but probably link that you need to enter is dependent on your location, for ex- for me it was https://pub.dev/ instead

[Tarhex]

Try to see if you can reach https://pub.dev/ in your browser

If it is accessible, declare PUB_HOSTED_URL as a system environment variable and give it the value https://pub.dev./

Then exit and reopen your cmd window and try again.

Edit:

Changed ' https://dartlang-pub-dev.appspot.com/' to ' https://pub.dev/' based on @jonasfj correction

[jonasfj]

Do not use https://dartlang-pub-dev.appspot.com/.

This is a staging site used for development and stuff.. data is outdated and often incorrect.

[borysHozh77]

Hello, everyone, I am facing an issue like below when run flutter pub get.
"Running "flutter pub get" in flutter_application...
(This is taking an unexpectedly long time.) "
I want to fix this, could you explain how to fix this issue?