This reverts commit 5e01e6be.

* 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

* less verbose logging + tracing based on method name

* add tracing per rpc call

* fix nits

* remove unsed feature

* fix build

* http make logging more human friendly

* unify logging format

* deps: make tracing hard dependency

* fix tests

* fix nit

* fix build

* fix nits

* Update core/src/client/async_client/mod.rs

* Update core/Cargo.toml

* Update core/src/lib.rs

* fix(servers): more descriptive errors calls fail

Closing #775

* fix tests

* rename constants

* address grumbles

* initial rewrite to re-use HTTP access control

* clean things up

* Update core/src/error.rs

* Update core/src/error.rs

* allow origin: add back removed Display impl

* cleanup again

* Update http-server/src/lib.rs

* Update examples/examples/cors_server.rs

* Update core/src/server/access_control/mod.rs

Co-authored-by: Tarik Gul <47201679+TarikGul@users.noreply.github.com>

* Update http-server/src/server.rs

Co-authored-by: Tarik Gul <47201679+TarikGul@users.noreply.github.com>

* fix bad comment

* remove todo

* fix grumbles

* more grumbles

* rename and document a bit

* remove `Access-Control-Allow-Origin` in whitelist

* fix nit: pub(super)

* fix bad naming

Co-authored-by: Tarik Gul <47201679+TarikGul@users.noreply.github.com>

* fix(http server): omit jsonrpc details health API

Closing https://github.com/paritytech/jsonrpsee/issues/784
Ordinary GET requests doesn't expect the body the be formatted as
`JSON-RPC` responses which this fixes.

* address grumbles

* Update http-server/src/server.rs

* cargo fmt

* feat: add http health API

* Update http-server/src/server.rs

* remove needless change

* fix middleware nits

* feat: limit the number of subscriptions

Closing #729

* fix nit

* Update core/src/server/helpers.rs

* add integration tests + some fixes so it works

* cargo fmt

* fix doc links

* Unsubscribe calls should avoid subscription limits

Point to Tokio 1.16 (we use a method from it), and a little special treatment for unsubscribe methods

* No resource limiting for Unsubscribe calls

* Test that we can still unsubscribe after hitting a limit

* Fix a comment typo

Co-authored-by: Alexandru Vasile <60601340+lexnv@users.noreply.github.com>

* Update core/src/server/rpc_module.rs

* Update core/src/server/rpc_module.rs

Co-authored-by: James Wilson <james@jsdw.me>
Co-authored-by: Alexandru Vasile <60601340+lexnv@users.noreply.github.com>

* unify servers; use tokio::TcpListener

* add API to build server from tcp socket

* build_from_tcp nit: not async

* fix nits

* change `build_from_tcp` force users configure hyper

The hyper settings might contradict to settings on the provided
socket, force users of this API to configure that avoid confusion and
unexpected settings.

* Update http-server/src/server.rs

* fix doc links

* add separate APIs `build_from_tcp` and `build_from_hyper`

* fix clippy

* remove dead code

* fix build

* fix nit in example code

* fix: max_request_body_size setting should not override max_response_size

* chore: apply review comment

* feat(rpc module): add_stream to subscription sink

* fix some nits

* unify parameters to rpc methods

* Update core/src/server/rpc_module.rs

* Update tests/tests/integration_tests.rs

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

* address grumbles

* fix subscription tests

* new type for `SubscriptionCallback` and glue code

* remove unsed code

* remove todo

* add missing feature tokio/macros

* make `add_stream` cancel-safe

* rename add_stream and return status

* fix nits

* rename stream API -> streamify

* Update core/src/server/rpc_module.rs

* provide proper close reason

* spelling

* consume_and_streamify + docs

* fmt

* rename API pipe_from_stream

* improve logging; indicate which subscription method that failed

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

* fix(http server): handle post and option requests.

* Update http-server/src/response.rs

* fmt

* grumbles: validate CORS before checking method kind

* revert unintentional change

* Add A few tests around CORS and http method/header acceptance

* Tweak the CORS test

* return appropriate headers for CORS preflight response

* cargo fmt

* jsonrpc, not jsonrpsee in test requests

* don't test OPTIONS method in unsupported_methods test as it has different expectations

* Update tests/tests/integration_tests.rs

* Update tests/tests/integration_tests.rs

* Update tests/tests/integration_tests.rs

* Update tests/tests/integration_tests.rs

* Add an example to test CORS in browser, and a couple of fixes to CORS handling

* cargo fmt

* Update examples/cors_server.rs

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

* PoC

* introduce IdProvider trait

* revert Cow stuff

* Update ws-server/src/server.rs

* fix tests

* cargo fmt

* use 'static lifetime in SubscriptionId

* fix tests

* fmt

* make tests compile again

* fix tests

* Fix tests

* Move IdProvider impls to own module

* move `sub-id gen` types to `core`

* fix doc links

* make rand non-optional dep

* feature gate: id provider

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

* extract ws client to async client

* bring back jsonrpsee-ws-client crate

* new crate core client

* add missing file

* jsonrpsee crate: add core client

* rexport core client

* more re-exports

* downgrade trait bounds

* update version

* fix nits

* send close reason

* Update types/src/traits.rs

* move 'TEN_MB_CONST' to core

* Update client/core-client/Cargo.toml

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

* Update client/core-client/src/lib.rs

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

* cargo fmt

* Update client/ws-client/src/lib.rs

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

* Update client/ws-client/src/lib.rs

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

* move `async-client` core

The `async-client` is hidden behind a new feature flag `async-client`
because it brings in additional dependecies such as tokio rt.

* fix docs

* add example how to use "core client"

* fix build

* Update http-server/Cargo.toml

* Update client/transport/Cargo.toml

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

* 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>

* fix: enable several sockaddress when starting servers

* nits

* more verbose asserts in rustdoc tests

* fix tests

* fix tests again

* ws server: don't kill connection max limit exceeds

* Update ws-server/src/server.rs

* actually use max size in soketto

* rewrite me

* improve logs

* use soketto fix

* rewrite me

* fix nit

* revert unintentional change

* use soketto 0.7.1

* fix logger

* Update ws-server/src/server.rs

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

* Update ws-server/src/server.rs

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

* Update ws-server/src/server.rs

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

* Update ws-server/src/server.rs

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

* Update ws-server/src/server.rs

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

* fix build

* reject too large response

* fix some DRY code

* feat: bounded serializer for RpcModule

* Update utils/src/server/helpers.rs

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

* Update utils/src/server/helpers.rs

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

* address grumbles: safety and other nits

* address grumbles: MaxCallSize on closures instead

* Update utils/src/server/helpers.rs

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

* use max response size on errors too

* Revert "use max response size on errors too"

This reverts commit 3b07e42d257b2eebae311b92b7f72594d94d5f87.

* include max limit in error response

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

* Implement Future for server handles

* Explicitly assert timeout errors in tests

* Document resource limiting

* Formatting

* More formatting

* fmt

* Doc comment wording

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

* Cross-reference docs between servers and utils

* Fix grumbles

* More elaborate description

* Update http-server/Cargo.toml

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

* Apply suggestions from code review

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

* Allow for unlimited resources if cap is 0

* fmt

* Update ws-server/Cargo.toml

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

* Clarify 8 resources, 0s in costs/limits, and runtime errors

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

* [ws server]: refactor start()

* remove needless clone

* fix http server too

* fmt

* unify stop APIs

* fix bad merge

* add API to use custom tokio runtime

* use futures oneshot

* fix unintentional change

* Revert "use futures oneshot"

This reverts commit 0432f6ba41d49a3494943458657a31f8afd79160.

* Update http-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>

* Squash post merge

* RAII claims and some comments

* Adding resources to Methods

* Use arrays for claiming all resources at once

* Register resources on ws-server

* Return MethodResourcesBuilder from register_method

* Return MethodResourcesBuilder from register_async_method

* fmt and comments

* Add `verify_and_insert` to get rid of `or_insert` in order to get mut ref to value

* Resources initialization

* No need for ResourceBuilder

* Comment all the things

* Handle errors on ws-server `start` method

* Passing ResourceGuard to method execution

* Start ws-server in background, simplify all the tests!

* Claiming resources on runtime

* Do checked math on resource claiming

* Clearer error path for resources at limit

* Resource limiting tests WIP

* Unbox async futures

* fmt

* Cleaner proc macro

* Fix lifetime issues with ResourceGuard with internal Arc

* Remove unnecessary lifetime generic

* Working tests

* Use turbofish in tests

* fmt

* Fixed (?) benches

* Apply suggestions from code review

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

* Tweak more grumbles

* Adding a test for resource limiting with proc macros (WIP)

* Reworking attribute macros for resource limiting (#507)

* Squashed macros WIP

* bae-less macros!

* Make things simpler and more readable

* Some comments and DRY aliases parsing

* Naming things is hard

* Respan is no longer needed

* Simpler Arguments

* Remove stale code

* Apply suggestions from code review

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

* syn-up all the things, handle resources on methods

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

* Resource limiting on the http server

* Test two resources at once

* Test the HTTP server for resource limiting

* Apply suggestions from code review

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

* Comment tweaks

* More explicit error type for `AttributeMeta::retain`

* Remove generic from ResourceTable; derive Default on ws Builder

* Make the macros shorter

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

* Re-export v2::params, error, request and response types

* Use shallow type paths

* Renames

* More renames

* fmt

* s/RpcParams/Params/

* Add a type alias `SubscriptionResponse` to `Notification` which is parametrized to `SubscriptionPayload`
Move `SubscriptionResponse` to the `response` module

* Fix doc links

* Cleanup and some docs

* Review feedback

* cleanup

* Silence warning on cors_max_age

* Revert change to `AccessControl`

* Add license headers where missing and update year

* Update examples/http.rs

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

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

* Experimental generic driver for methods

* Move FutureDriver to its own module

* "Infallible" sync methods + fmt

* Drive all methods to completion before background_task closes

* Sniff the first byte to glean if the incoming request is a single or batch request

This works around the serde limitations around `untagged` enums and `RawValue`.

* fmt

* For http server, check first byte before allocating space for the body

Also, rework the way we return errors: prefer JSON-RPC errors according to spec (application/json) wherever sensible.

* Review feedback

* Don't assume there is a first byte to read

* ty clipyp

* Review concerns

* Cleanup

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

* Sniff the first byte to glean if the incoming request is a single or batch request

This works around the serde limitations around `untagged` enums and `RawValue`.

* fmt

* Review feedback

* Don't assume there is a first byte to read

* remove todo

* review feedback

* Do not register methods on servers

* fmt

* Infallible `to_rpc` proc macro

* Remove dead code

* Check for duplicate names at compile time

* Add a UI test for name conflicts

* Apply suggestions from code review

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

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

* Include "macros" in the "server" feature

* Re-export SubscriptionSink

* Include the "types" feature in both the "client" and "server" features
Export types::* from façade when the "types" is active
Export types::* from servers

* fmt

* Export jsonrpsee_types under types

* fmt

* broken doc link

* fix benches

* fmt

* Fix test imports