* relay dispatch result flags back to the source chain

* OnMessagesDelivered callback

* add lane id to OnDeliveredMessages callback

* fix benchmarks && upate weights

* clippy

* clippy

* clipy another try

* OnMessagesDelivered -> OnDeliveryConfirmed

* Update primitives/messages/src/source_chain.rs

Co-authored-by: Tomasz Drwięga <[email protected]>

Co-authored-by: Tomasz Drwięga <[email protected]>

* pay dispatch fee at target chain

* refund unspent dispatch weight to messages relayer

* test that transfer actually happens

* pay-at-target-cchain benchmarks + fix previous benchmarks (invalid signature)

* include/exclude pay-dispatch-fee weight from delivery_and_dispatch_fee/delivery tx cost

* remvoe some redundant traces

* enum DispatchFeePayment {}

* typo

* update docs

* (revert removal of valid check)

* Update modules/messages/src/benchmarking.rs

Co-authored-by: Tomasz Drwięga <[email protected]>

* Update modules/messages/src/benchmarking.rs

Co-authored-by: Tomasz Drwięga <[email protected]>

* Update modules/messages/src/benchmarking.rs

Co-authored-by: Tomasz Drwięga <[email protected]>

* Update modules/messages/src/benchmarking.rs

Co-authored-by: Tomasz Drwięga <[email protected]>

Co-authored-by: Tomasz Drwięga <[email protected]>
Co-authored-by: Tomasz Drwięga <[email protected]>

* introduce relayer mode enum

* removed MaximalReward mode

* TODO

* Saturating -> SaturatingAdd

* ref issue in TODOs

* Update relays/messages/src/message_race_delivery.rs

Co-authored-by: Hernando Castano <[email protected]>

Co-authored-by: Hernando Castano <[email protected]>

Co-authored-by: Tomasz Drwięga <[email protected]>

* updated weight formula for submit_finality_proof

* remove common prefix traces

* update docs

* single benchmark

* Re-generate weights.

* Update delivery transaction limits

Co-authored-by: Tomasz Drwięga <[email protected]>
Co-authored-by: Hernando Castano <[email protected]>

* Insert headers in benchmarks.

* Fix benchmarks.

* Lower number of headers.

* Avoid hardcoding numbers.

* Update weights.

* cargo fmt --all

* Remove todo.

* Fix test.

* Address review comments.

* Fix borrowed value.

* New weights.

* Fix test.

* cargo fmt --all

* complex headers+messages relay

* post-merge fix

* fix + test issue with on-demand not starting

* Update copyright date to 2021

* Bump date in license header template

* on-demand headers relay

* bool::then

* move file

* atomic submit_signed_extrinsic

* remove cli options from future

* test on-demand relay

* TODOs

* fixed initialization call for Westend -> Millau

* Update relays/client-substrate/src/client.rs

Co-authored-by: Hernando Castano <[email protected]>

* removed on_demand_headers_relay.rs

* on_demand_headers_relay traces

* fix compilation

* fmt

* docs

Co-authored-by: Hernando Castano <[email protected]>

* Remove chains.

* Move relay clients.

* Flatten generic.

* Fix fmt.

* use runtime:: prefix for message-lane pallet traces

* renamed message-lane (module and primitives) folder into messages

* replace "message lane" with "messages" where appropriate

* generate large messages

* consider headers sync lag when computing number of rewards in confirmation

* more fixes

* fix logs

* fix warnings

* do not wait until tx that has delivered nonces will be finalized before submitting other tx

* tests for maximal weight/size

* cleanup

* cleanup

* clippy

* compilation

* args for dispatch weight and remark size

* ExplicitOrMaximal

* clippy

* update weight-related parameters in relay

* asserts + docs

Co-authored-by: Hernando Castano <[email protected]>

* limit maximal number of unconfirmed messages at inbound lane

* unrewarded_relayer_entries API

* change relay to support max unrewarded relayer entries

* Update modules/message-lane/src/inbound_lane.rs

Co-authored-by: Tomasz Drwięga <[email protected]>

* Update relays/messages-relay/src/message_lane_loop.rs

Co-authored-by: Hernando Castano <[email protected]>

* removed pub

Co-authored-by: Tomasz Drwięga <[email protected]>
Co-authored-by: Hernando Castano <[email protected]>

* relay Rialto messages to Millau

* impl SubmitRialtoToMillauMessage

* fmt

* replace generic message lane APIs with chain-specific

* moved SubstrateHeadersSyncPipeline to headers_pipeline.rs

* substrate-specific message lane trait

* Update relays/substrate/src/messages_lane.rs

Co-authored-by: Hernando Castano <[email protected]>

Co-authored-by: Hernando Castano <[email protected]>