HTTP11s

HTTP11s is not a recognized or standard term within the realm of web protocols. It is possible this is a typo or a misunderstanding. The widely established and foundational protocol for transferring data over the internet is HTTP, which stands for Hypertext Transfer Protocol. This protocol has gone through several versions, with HTTP/1.1 being a significant and long-standing iteration.

HTTP/1.1 was released in 1997 and introduced several improvements over its predecessor, HTTP/1.0. Key features included persistent connections, which allowed multiple requests and responses to be sent over a single TCP connection, significantly reducing latency. It also introduced pipelining, enabling clients to send multiple requests without waiting for each response, and chunked transfer encoding, which allowed for data to be sent in variable-sized chunks. These features made web browsing much more efficient.

More recently, HTTP/2 was released in 2015, offering further performance enhancements such as multiplexing, header compression, and server push. Following this, HTTP/3, the latest major version, utilizes QUIC instead of TCP for transport, aiming to reduce latency and improve performance, especially on unreliable networks.

Given the absence of "HTTP11s" as a defined term, it is most likely that the intended subject was either HTTP itself, or specifically the HTTP/1.1 version of the protocol. If "HTTP11s" refers to a specific, non-standard implementation or a proprietary extension, information about it would likely be found within the documentation or community of that particular system.