Let’s clarify a few things: My understanding is that http2 renders optimization techniques like file concatenation obsolete, since a server using http2 just sends one request. HTTP/2 renders optimisation techniques like file concatenation somewhat obsolete since HTTP/2 allows many files to download in parallel across the same connection. Previously, in HTTP/1.1, the browser could request … Read more
Browsers impose a per-domain limit of 6-8 connections when using HTTP/1.1, depending on the browser implementation. This allows at most 6-8 concurrent requests per domain. With HTTP/2, browsers open only 1 connection per domain. However, thanks to the multiplexing feature of the HTTP/2 protocol, the number of concurrent requests per domain is not limited to … Read more
Will likely be one of two reasons: You are using anti-virus software and it is MITM your traffic and so downgrading you to HTTP/1.1. Turn off https traffic monitoring on your AV to connect directly to the server. You can check if this is the case by using an online tool to test your site … Read more
After just getting finished reading RFC 7540, HTTP/2 does obsolete websockets for all use cases except for pushing binary data from the server to a JS webclient. HTTP/2 fully supports binary bidi streaming (read on), but browser JS doesn’t have an API for consuming binary data frames and AFAIK such an API is not planned. … Read more
In my case it was – no disk space left on the web server.
In general, the biggest immediate benefit of HTTP/2 is the speed increase offered by multiplexing for the browser connections which are often hampered by high latency (i.e. slow round trip speed). These also reduce the need (and expense) of multiple connections which is a work around to try to achieve similar performance benefits in HTTP/1.1. … Read more
Put simply, multiplexing allows your Browser to fire off multiple requests at once on the same connection and receive the requests back in any order. And now for the much more complicated answer… When you load a web page, it downloads the HTML page, it sees it needs some CSS, some JavaScript, a load of … Read more