* Rename Middleware to Metrics

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Change documentation to reflect the `Metrics` trait

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Middleware name refactoring

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Http middleware renaming

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Rename examples

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Update http-server/src/server.rs

Co-authored-by: James Wilson <james@jsdw.me>

* http: Use `request` instead of `HeaderMap` for logging

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Rename `Metrics` -> `Logger`

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Fix cargo clippy

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Fix examples

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Fix tests

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Fix cargo fmt

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Fix hyper dependency

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

Co-authored-by: James Wilson <james@jsdw.me>

* WIP: refactoring

* refactor http server

* fix tests

* Delete TODO.txt

* fix tests again

* add benches/src/lib.rs

* remove bench changes; fast less deps

* no more env_logger

* update examples

* ws server; expose headers in middleware

* add back uncommented code

* fix nits

* make the code more readable

* add back the tracing stuff

* simplify code but one extra clone

* fix tests again

* revert async accept API

* fix nits

* different traits for WS and HTTP middleware

* fix tests

* revert benchmark change

* Update core/src/server/helpers.rs

* Update ws-server/Cargo.toml

* add limit to batch responses as well

* pre-allocate string for batches

* small refactor

* Nuke V2

* fmt

* Formatting and imports

* Updated benches

* Fix doc comment link

* Brace imports in ws-server

* Reworking imports

* std first

* fmt

* std on top

* Update to match changed line numbers

* Rename jsonrpsee_utils -> jsonrpsee_core

* Migrating things types -> core

* RpcError -> ErrorResponse

* Merge types::client into core::client

* Continued move types -> core

* Removing features to make checks pass

* Move rpc_module tests to tests crate

* Fixed doc comment links

* Add futures-util dependency for client

* Remove dead code

Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com>

* fmt

* Feature gate the Client trait

* Move `Client` traits to `client` module

Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com>

* Squashed MethodSink

* Middleware WIP

* Passing all the information through

* Unnecessary `false`

* Apply suggestions from code review

Co-authored-by: David <dvdplm@gmail.com>

* Add a setter for middleware (#577)

* Fix try-build tests

* Add a middleware setter and an example

* Actually add the example

* Grumbles

* Use an atomic

* Set middleware with a constructor instead

* Resolve a todo

* Update ws-server/src/server.rs

Co-authored-by: Maciej Hirsz <1096222+maciejhirsz@users.noreply.github.com>

* Update ws-server/src/server.rs

Co-authored-by: Maciej Hirsz <1096222+maciejhirsz@users.noreply.github.com>

* Update ws-server/src/server.rs

Co-authored-by: Maciej Hirsz <1096222+maciejhirsz@users.noreply.github.com>

Co-authored-by: Maciej Hirsz <1096222+maciejhirsz@users.noreply.github.com>

* Middleware::on_response for batches

* Middleware in HTTP

* fmt

* Server builder for HTTP

* Use actual time in the example

* HTTP example

* Middleware to capture method not found calls

* An example of adding multiple middlewares. (#581)

* Add an example of adding multiple middlewares.

* Update examples/multi-middleware.rs

Co-authored-by: Maciej Hirsz <1096222+maciejhirsz@users.noreply.github.com>

* Update examples/Cargo.toml

Co-authored-by: Maciej Hirsz <1096222+maciejhirsz@users.noreply.github.com>

Co-authored-by: Maciej Hirsz <1096222+maciejhirsz@users.noreply.github.com>

* Move `Middleware` to jsonrpsee-types (#582)

* Move `Middleware` to jsonrpsee-types

* Move Middleware trait to jsonrpsee-types

* Add some docs.

* Link middleware to `with_middleware` methods in docs

* Doctests

* Doc comment fixed

* Clean up a TODO

* Switch back to `set_middleware`

* fmt

* Tests

* Add `on_connect` and `on_disconnect`

* Add note to future selves

Co-authored-by: David <dvdplm@gmail.com>