enable HTTP keep-alive support by default
enable HTTP keep-alive support by default

GerHobbelt/civet-webserver,commshare/civet-webserver,GerHobbelt/civet-webserver,commshare/civet-webserver,commshare/civet-webserver,GerHobbelt/civet-webserver,GerHobbelt/civet-webserver,commshare/civet-webserver,GerHobbelt/civet-webserver,GerHobbelt/civet-webserver,commshare/civet-webserver,commshare/civet-webserver,commshare/civet-webserver