[TINKERPOP-2425] Server closes HTTP connection for keepAlive as true

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.5.0, 3.4.8
• Fix Version/s: 3.5.0, 3.4.9
• Component/s: server
• Assignee: Divij Vaidya
• Reporter: Divij Vaidya
• Created: 25/Sep/20 21:56
• Updated: 09/Oct/20 14:09
• Resolved: 09/Oct/20 00:40

Description

Current behaviour
In `HttpGremlinEndpointHandler` we close the connection when sending out an error in the response even if keepAlive is set as true on the request. 

Expected behaviour
Respect the `keepAlive` flag on the request and do not close the HTTP connection if it set to true.