EmberServerBuilder

Called when an error occurs while attempting to read a connection.

For example on JVM javax.net.ssl.SSLException may be thrown if the client doesn't speak SSL.

If the scala.PartialFunction does not match the error is just logged.

An error handler which will run in cases where the server is unable to parse the "start-line" (http 2 name) or "request-line" (http 1.1 name). This is the first line of the request, e.g. "GET / HTTP/1.1".

In this case, RFC 9112 (HTTP 2) says a 400 should be returned.

This handler allows for configuring the behavior. The default as of 0.23.19 is to return a 400.