[dancer-users] "Route exception: Bad Content-Length: maybe client disconnect?" with JSON POST and request->content

[Daniel Perrett]

I'm afraid I didn't get the attachment, so apologies if this guess is out, but are you setting the content-length on your HTTP::Request? If not, have a look at how HTTP::Request::Common does it - https://metacpan.org/source/ETHER/HTTP-Message-6.11/lib/HTTP/Request/Common.pm#L97 - (or indeed just use HTTP::Request::Common itself).

Daniel

-----Original Message-----
From: dancer-users [mailto:dancer-users-bounces at dancer.pm] On Behalf Of Lennart Hengstmengel
Sent: 22 July 2016 12:38
To: dancer-users at dancer.pm
Subject: [dancer-users] "Route exception: Bad Content-Length: maybe client disconnect?" with JSON POST and request->content

Hi all,

I'm running into an issue that looks like a bug, but I'm unsure where it comes from. Could be in Dancer2, but maybe in Plack::Request, or even in Plack::Test, HTTP::Request, or somewhere else. I'm kinda lost in the woods. I was hoping that a mind greater than mine can shed some light on this.

I get an error "Route exception: Bad Content-Length: maybe client disconnect? (xx bytes remaining)" where xx is the total content length of the request body.
But only under the following conditions:

- (valid) JSON POST to a Dancer2 app
- the app is configured with serializer = JSON
- in the route there's a call to: request->content
- using Plack::Test and HTTP::Request

Attached is a minimal test to demonstrate the issue. Test no 5 fails.

I cannot reproduce this issue when using f.e. curl, this call works without errors:

     curl --data-binary '{ "foo": "123" }' --header 'Content-type: 
application/json' http://localhost:3000/nok

I am using the latest version of Dancer (0.200003) and also latest CPAN versions of Plack and HTTP::Request.

Any insights?

Thanks,
Lennart