Invoke hangs when using MinGW/Git Bash

This is a Bug Report

Description

Following the quick-start guide, the deployment of the “hello” Lambda function to AWS was successful. Trying to invoke function in the Git Bash/MinGW console results in an indefinite hang when running the following:

$ serverless invoke -f hello -l

However, if I use the Windows CMD prompt, I get the expected response:

D:\Repositories\serverless-test>serverless invoke -f hello -l
{
    "statusCode": 200,
    "body": "{\"message\":\"Go Serverless v1.0! Your function executed successfully!\",\"input\":{}}"
}
--------------------------------------------------------------------
START RequestId: 6af14a9a-667e-11e7-bafb-3b0e315fa13d Version: $LATEST
END RequestId: 6af14a9a-667e-11e7-bafb-3b0e315fa13d
REPORT RequestId: 6af14a9a-667e-11e7-bafb-3b0e315fa13d  Duration: 3.00 ms       Billed Duration: 100 ms         Memory Size: 1024 MB    Max Memory Used: 18 MB

The Windows CMD prompt is an awful tool and Powershell is just CMD with a blue background, so I would prefer to use a real terminal if possible. Any ideas on what is causing this?

Additional Data

• Serverless Framework Version you’re using: 1.17.0
• Operating System: Windows 10 Education
• Stack Trace: N/A
• Provider Error messages: N/A

[neverendingqs]

Try running winpty first (which comes with Git bash):

$ winpty bash
$ serverless invoke -f hello -l

Not 100% sure what’s going on, but something something Git bash not being able to handle Windows signals?

Some console programs, most notably non-MSYS2 Python, PHP, Node and OpenSSL, interact correctly with MinTTY only when called through winpty (e.g. the Python console needs to be started as winpty python instead of just python).

https://github.com/git-for-windows/build-extra/blob/master/ReleaseNotes.md#known-issues

[medikoo]

This looks as an issue specific to given environment.

Not sure if we can do anything about that in context of a Framework, still if there’s any way to improve the experience we’re open for suggestions.