NewUpgradeAwareProxyHandler creates a new proxy handler with a default flush interval.

A generic http response checker to transform the error.

LocationStreamer is a resource that streams the contents of a particular location URL.

UpgradeAwareProxyHandler is a handler for proxy requests that may require an upgrade.

ErrorResponder abstracts error reporting to the proxy handler to remove the need to hardcode a particular error format.

Check the http error status from a location URL.