[HTTPCORE-604] HttpClient5 double-closes IOSessions for HTTP/1.1 HEAD requests

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.0-beta9
• Component/s: HttpCore NIO
• Assignee: Unassigned
• Reporter: Richard Hernandez
• Created: 27/Sep/19 20:19
• Updated: 01/Oct/19 12:58
• Resolved: 01/Oct/19 07:04

Description

HttpClient5 consistently fails HEAD requests that have the "Connection: close" header on the response because the runtime always attempts to close the IOSession handling the connection twice. The second close triggers a ConnectionClosedException, causing the request to fail.

For some reason, this only affects HEAD requests. All other HTTP methods work fine.

I don't have a repro that I can share yet, but I'm working on a fix. I'm letting you know because I don't know if I'll need to make any changes in core (I suspect I will). Can you wait to release beta9 until I have a root cause?