Httpalt
Httpalt is a term used in some discussions of web protocols to denote an alternative transport path for HTTP-like interactions. It is not an official standard and there is no single, formal definition. In practice, httpalt is used as a label for mechanisms that allow clients to access the same resource via an alternative protocol or transport while keeping the same resource URL semantics. Common motivations include reducing latency, improving throughput, or enabling features not available in standard HTTP, such as persistent connections or bidirectional streams.
Implementation patterns vary widely. A typical approach uses a discovery mechanism where a client learns an
Challenges arise in the operation of httpalt. Caching proxies, intermediate gateways, security and cross-origin policies, TLS
Relation to standards is limited. While mechanisms such as the Alt-Svc header hint at the possibility of