all: misc fixes

appview/db/jetstream.go

···
 package db
 
 func (d *DB) SaveLastTimeUs(lastTimeUs int64) error {
-	_, err := d.db.Exec(`insert into _jetstream (last_time_us) values (?)`, lastTimeUs)
+	_, err := d.db.Exec(`update _jetstream set last_time_us = ?`, lastTimeUs)
 	return err
 }
 

knotserver/config/config.go

···
 
 type Server struct {
 	ListenAddr         string `env:"LISTEN_ADDR, default=0.0.0.0:5555"`
-	InternalListenAddr string `env:"INTERNAL_LISTEN_ADDR, default=0.0.0.0:5444"`
+	InternalListenAddr string `env:"INTERNAL_LISTEN_ADDR, default=127.0.0.1:5444"`
 	Secret             string `env:"SECRET, required"`
 	DBPath             string `env:"DB_PATH, default=knotserver.db"`
 	Hostname           string `env:"HOSTNAME, required"`

knotserver/db/jetstream.go

···
 package db
 
 func (d *DB) SaveLastTimeUs(lastTimeUs int64) error {
-	_, err := d.db.Exec(`insert into _jetstream (last_time_us) values (?)`, lastTimeUs)
+	_, err := d.db.Exec(`update _jetstream set last_time_us = ?`, lastTimeUs)
 	return err
 }
 

knotserver/routes.go

···
 )
 
 func (h *Handle) Index(w http.ResponseWriter, r *http.Request) {
-	w.Write([]byte("This is a knot, part of the wider Tangle network: https://tangled.sh"))
+	w.Write([]byte("This is a knot server. More info at https://tangled.sh"))
 }
 
 func (h *Handle) RepoIndex(w http.ResponseWriter, r *http.Request) {