get a relay from the map if possible, otherwise create a new one and store it in the map

formatBaseURL takes a hostname (baseHost) and a base path and joins them. Both are parsed as URLs (using net/url) and then joined to ensure a properl

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Goroutine to watch a PgSQL LISTEN/NOTIFY channel, and send the notification object to the broadcast relay when an event comes through

serverURLBase returns the base server URL that the client used to access this service. All pg_tileserv routes are mounted relative to this URL (includ

serverURLHost returns the host (and scheme) for this service. In the case of access via a proxy service, if the standard headers are set, we return th

Generator function to create http.Handler to the http.Server to run. Handler converts request to websocket, and sets up goroutine to listen for broadc

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