curl: (56) LibreSSL SSL_read: SSL_ERROR_SYSCALL, errno 54

Question

When I upgrade flutter, I came across with below error message.

curl: (56) LibreSSL SSL_read: SSL_ERROR_SYSCALL, errno 54

Failed to retrieve the Dart SDK from: https://storage.googleapis.com/flutter_infra/flutter/4737fc5cd89b8f0136e927b00f2e159444b95a73/dart-sdk-darwin-x64.zip
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  https://flutter.io/community/china


Flutter 1.3.8 • channel beta • https://github.com/flutter/flutter.git
Framework • revision e5b1ed7a7f (6 weeks ago) • 2019-04-11 14:01:46 -0700
Engine • revision 4737fc5cd8
Tools • Dart 2.2.1 (build 2.2.1-dev.0.0 571ea80e11)

Running flutter doctor...
Downloading Dart SDK from Flutter engine 4737fc5cd89b8f0136e927b00f2e159444b95a73...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed

What is this? what is the the problems?

Answer 1

its a network issue. If your internet is very slow and there are hiccups with network, you will face this error. Try to run again

Answer 2

Run these commands, it should solve the problem.

echo '--no-alpn' > ~/.curlrc
export HOMEBREW_CURLRC=1