Fix:server on close on websocket only condition#910

xen-HendryZheng wants to merge 1 commit intochimurai:masterchimurai/http-proxy-middleware:masterfrom

xen-HendryZheng:fix-add-condition-server-on-close-only-for-websocket-optionxen-HendryZheng/http-proxy-middleware:fix-add-condition-server-on-close-only-for-websocket-optionCopy head branch name to clipboard