Description

Since payara-micro:5.192, a behaviour change has been noticed when send an HTTP Request passing multiple values to the same query parameter using Microprofile Rest Client. This behaviour change prevents an HTTP server (even the payara itself) to parse query parameters as usual.

Expected Outcome

client.callService(Arrays.asList("1", "2"))
// >> http://server:8080/server/example?q=1&q=2

Current Outcome

client.callService(Arrays.asList("1", "2"))
// >> http://server:8080/server/example?q=%5B1%2C%202%5D

Steps to reproduce (Only for bug reports)

1. Launch infrastructure

   ./buildAndRun.sh

2. Send HTTP Request to the payara-micro:191 server, passing multiple values to the parameter "q"

   curl "http://localhost:8081/client/example?q=1&q=2"

3. Send HTTP Request to the payara-micro:192 server, passing multiple values to the parameter "q"

   curl "http://localhost:8082/client/example?q=1&q=2"

4. Send HTTP Request to the payara-micro:201 server, passing multiple values to the parameter "q"

   curl "http://localhost:8083/client/example?q=1&q=2"

Samples

repository

Context (Optional)

A payara-micro server that invokes an HTTP service (from other payara-micro) passing multiple values to a single parameter by using the Microprofile Rest Client.

Environment

• Payara Version: 5.1.9.1, 5.1.9.2, 5.2.0.1
• Edition: Micro
• JDK Version: 8 - OpenJDK
• Operating System: Mac, Linux