ThreeMammals/Ocelot

Multipart/form-data is not rerouted (error 404)

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#714 opened on Dec 11, 2018

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 (1 comment) (5 reactions) (0 assignees)C# (8,137 stars) (1,617 forks)batch import
bughelp wantedneeds validation

Description

Expected Behavior

A multipart/form-data http POST request is redirected to the desired endpoint.

Actual Behavior

An error 404 - not found http response is given.

Description

I won't include steps to reproduce the problem etc, because I'm pretty sure the feature is just not implemented (yet - or intentional).

Question

Is rerouting a file upload using multipart/form-data desired functionality, or is in an intentionally left out thing? I could imagine you'd not want to reroute such a file upload because of the overhead - why not just upload the file directly to the API? However, if the overhead is as little as the normal http requests are (about 1 ms), then I'd think it would be preferable to support multipart/form-data http post requests in reroutes.

Edit: The reason I'm certain that I haven't just incorrectly configured the reroute, is as follows: When I send the request with no file in the parameter, the reroute works and gets into my other API. When I send the request with a file in the parameter, error 404 occurs, thrown by Ocelot presumably.

Contributor guide

Tech stack
csharp
Domain
backendapi
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
needs maintainer response
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
C# basicsASP.NET Core fundamentalsHTTP multipart/form data
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
The issue asks whether multipart/form data routing is intentionally unsupported in Ocelot. To implement, examine the routing middleware in Ocelot (e.g., Ocelot.Middleware.MultipartBodyMiddleware or similar) and how it handles different content types. Check if there are any existing PRs or discussions addressing multipart support. The maintainer has not responded, so clarifying the intended behavior is the first step. Then, modify the routing logic to forward multipart requests to the downstream service.