Serverless-express: Chunked transfer encoding

[denneulin]

Hi,

I use an express middleware that set to chunked the transfer-encoding headers

'transfer-encoding': 'chunked'

In that case, I get the following error :

The request could not be satisfied.
CloudFront attempted to establish a connection with the origin, but either the attempt failed or the origin closed the connection.

To make my request works, in the forwardResponseToApiGateway function of the aws-serverless-express/index.js file I remove this header.

Do you think you could make chunked transfert encoding pass ?

[brettstack]

Chunked transfer is something we are looking into; unfortunately, for now
you will need to disable it.

On Wed, 19 Oct 2016, 07:25 Anthony Denneulin, [email protected]
wrote:

Hi,

I use an express middleware that set to chunked the transfer-encoding
headers

'transfer-encoding': 'chunked'

In that case, I get the following error :

The request could not be satisfied.
CloudFront attempted to establish a connection with the origin, but either
the attempt failed or the origin closed the connection.

To make my request works, in the forwardResponseToApiGateway function of
the aws-serverless-express/index.js file I remove this header.

Do you think you could make chunked transfert encoding pass ?

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[denneulin]

That's really annoying but thanks for your answer ;)

[goldenbearkin]

Why is this closed? Is it solved?

[brettstack]

This is a limitation with API Gateway, and not the library. However, I will reopen this issue for tracking and notification purposes.

[goldenbearkin]

Thanks brettstack.
for those seeking a temporary solution mentioned by @denneulin above. Add 'delete headers' as below in the forwardResponseToApiGateway function.

delete headers["transfer-encoding"]
const successResponse = {statusCode, body, headers}

[abhigna]

This should be working now. You don't need to explicitly remove the 'transfer-encoding' header anymore.

[ckuijjer]

@abhigna I think the transfer-encoding: chunked issue still exists. I've tried to use aws-serverless-express with graphql-server-express today and I run into the same issue as @denneulin

[brettstack]

Chunked encoding still isn't working, but we are now deleting the header for you https://github.com/awslabs/aws-serverless-express/commit/4d54a81b831eca97524f15b72fa8be379c80aedb#diff-168726dbe96b3ce427e7fedce31bb0bcR54