set default max outgoing messages to 25 for all channels

crates/subspace-runtime/src/lib.rs

@@ -650,8 +650,12 @@ parameter_types! {
     pub const ChannelInitReservePortion: Perbill = Perbill::from_percent(20);
     // TODO update the fee model
     pub const ChannelFeeModel: FeeModel<Balance> = FeeModel{relay_fee: SSC};
+    pub const MaxOutgoingMessages: u32 = 25;
 }
 
+// ensure the max outgoing messages is not 0.
+const_assert!(MaxOutgoingMessages::get() >= 1);
+
 pub struct DomainRegistration;
 impl sp_messenger::DomainRegistration for DomainRegistration {
     fn is_domain_registered(domain_id: DomainId) -> bool {
@@ -684,6 +688,7 @@ impl pallet_messenger::Config for Runtime {
     type ChannelInitReservePortion = ChannelInitReservePortion;
     type DomainRegistration = DomainRegistration;
     type ChannelFeeModel = ChannelFeeModel;
+    type MaxOutgoingMessages = MaxOutgoingMessages;
 }
 
 impl<C> frame_system::offchain::SendTransactionTypes<C> for Runtime

domains/client/domain-operator/src/tests.rs

@@ -3784,9 +3784,6 @@ async fn test_domain_sudo_calls() {
         .construct_and_send_extrinsic(evm_domain_test_runtime::RuntimeCall::Messenger(
             pallet_messenger::Call::initiate_channel {
                 dst_chain_id: ChainId::Consensus,
-                params: pallet_messenger::InitiateChannelParams {
-                    max_outgoing_messages: 100,
-                },
             },
         ))
         .await
@@ -3927,9 +3924,6 @@ async fn test_xdm_between_consensus_and_domain_should_work() {
         .construct_and_send_extrinsic(evm_domain_test_runtime::RuntimeCall::Messenger(
             pallet_messenger::Call::initiate_channel {
                 dst_chain_id: ChainId::Consensus,
-                params: pallet_messenger::InitiateChannelParams {
-                    max_outgoing_messages: 100,
-                },
             },
         ))
         .await
@@ -4140,9 +4134,6 @@ async fn test_xdm_between_domains_should_work() {
     bob.construct_and_send_extrinsic(auto_id_domain_test_runtime::RuntimeCall::Messenger(
         pallet_messenger::Call::initiate_channel {
             dst_chain_id: ChainId::Domain(EVM_DOMAIN_ID),
-            params: pallet_messenger::InitiateChannelParams {
-                max_outgoing_messages: 100,
-            },
         },
     ))
     .await
@@ -4294,9 +4285,6 @@ async fn test_unordered_cross_domains_message_should_work() {
         .construct_and_send_extrinsic(evm_domain_test_runtime::RuntimeCall::Messenger(
             pallet_messenger::Call::initiate_channel {
                 dst_chain_id: ChainId::Consensus,
-                params: pallet_messenger::InitiateChannelParams {
-                    max_outgoing_messages: 100,
-                },
             },
         ))
         .await
@@ -5430,9 +5418,6 @@ async fn test_xdm_false_invalid_fraud_proof() {
         .construct_and_send_extrinsic(evm_domain_test_runtime::RuntimeCall::Messenger(
             pallet_messenger::Call::initiate_channel {
                 dst_chain_id: ChainId::Consensus,
-                params: pallet_messenger::InitiateChannelParams {
-                    max_outgoing_messages: 100,
-                },
             },
         ))
         .await
@@ -5628,9 +5613,6 @@ async fn test_stale_fork_xdm_true_invalid_fraud_proof() {
         .construct_and_send_extrinsic(evm_domain_test_runtime::RuntimeCall::Messenger(
             pallet_messenger::Call::initiate_channel {
                 dst_chain_id: ChainId::Consensus,
-                params: pallet_messenger::InitiateChannelParams {
-                    max_outgoing_messages: 100,
-                },
             },
         ))
         .await

domains/pallets/messenger/src/benchmarking.rs

@@ -33,9 +33,6 @@ mod benchmarks {
     fn initiate_channel() {
         let dst_chain_id: ChainId = u32::MAX.into();
         assert_ne!(T::SelfChainId::get(), dst_chain_id);
-        let channel_params = InitiateChannelParams {
-            max_outgoing_messages: 100,
-        };
         let channel_id = NextChannelId::<T>::get(dst_chain_id);
         let account = account("account", 0, 0);
         T::Currency::set_balance(
@@ -47,11 +44,7 @@ mod benchmarks {
         ChainAllowlist::<T>::put(list);
 
         #[extrinsic_call]
-        _(
-            RawOrigin::Signed(account.clone()),
-            dst_chain_id,
-            channel_params,
-        );
+        _(RawOrigin::Signed(account.clone()), dst_chain_id);
 
         let channel = Channels::<T>::get(dst_chain_id, channel_id).expect("channel should exist");
         assert_eq!(channel.state, ChannelState::Initiated);

domains/pallets/messenger/src/lib.rs

@@ -98,12 +98,6 @@ pub(crate) enum CloseChannelBy<AccountId> {
     Sudo,
 }
 
-/// Parameters for a new channel between two chains.
-#[derive(Default, Debug, Encode, Decode, Clone, Eq, PartialEq, TypeInfo, Copy)]
-pub struct InitiateChannelParams {
-    pub max_outgoing_messages: u32,
-}
-
 /// Hold identifier trait for messenger specific balance holds
 pub trait HoldIdentifier<T: Config> {
     fn messenger_channel() -> FungibleHoldId<T>;
@@ -114,8 +108,8 @@ mod pallet {
     use crate::weights::WeightInfo;
     use crate::{
         BalanceOf, ChainAllowlistUpdate, Channel, ChannelId, ChannelState, CloseChannelBy,
-        FeeModel, HoldIdentifier, InitiateChannelParams, Nonce, OutboxMessageResult, StateRootOf,
-        ValidatedRelayMessage, U256,
+        FeeModel, HoldIdentifier, Nonce, OutboxMessageResult, StateRootOf, ValidatedRelayMessage,
+        U256,
     };
     #[cfg(not(feature = "std"))]
     use alloc::boxed::Box;
@@ -191,6 +185,8 @@ mod pallet {
         type DomainRegistration: DomainRegistration;
         /// Channels fee model
         type ChannelFeeModel: Get<FeeModel<BalanceOf<Self>>>;
+        /// Maximum outgoing messages from a given channel
+        type MaxOutgoingMessages: Get<u32>;
     }
 
     /// Pallet messenger used to communicate between chains and other blockchains.
@@ -559,11 +555,7 @@ mod pallet {
         /// Channel is set to initiated and do not accept or receive any messages.
         #[pallet::call_index(0)]
         #[pallet::weight(T::WeightInfo::initiate_channel())]
-        pub fn initiate_channel(
-            origin: OriginFor<T>,
-            dst_chain_id: ChainId,
-            params: InitiateChannelParams,
-        ) -> DispatchResult {
+        pub fn initiate_channel(origin: OriginFor<T>, dst_chain_id: ChainId) -> DispatchResult {
             let owner = ensure_signed(origin)?;
 
             // reserve channel open fees
@@ -580,7 +572,7 @@ mod pallet {
 
             // initiate the channel config
             let channel_open_params = ChannelOpenParams {
-                max_outgoing_messages: params.max_outgoing_messages,
+                max_outgoing_messages: T::MaxOutgoingMessages::get(),
                 fee_model: T::ChannelFeeModel::get(),
             };
             let channel_id = Self::do_init_channel(
@@ -1014,7 +1006,7 @@ mod pallet {
                 Error::<T>::InvalidChain,
             );
 
-            // ensure max outgoing messages is atleast 1
+            // ensure max outgoing messages is at least 1
             ensure!(
                 init_params.max_outgoing_messages >= 1u32,
                 Error::<T>::InvalidMaxOutgoingMessages

domains/pallets/messenger/src/mock.rs

@@ -60,6 +60,7 @@ macro_rules! impl_runtime {
             pub const ChannelReserveFee: Balance = 10;
             pub const ChannelInitReservePortion: Perbill = Perbill::from_percent(20);
             pub const ChannelFeeModel: FeeModel<Balance> = FeeModel{relay_fee: 1};
+            pub const MaxOutgoingMessages: u32 = 25;
         }
 
         #[derive(
@@ -102,6 +103,7 @@ macro_rules! impl_runtime {
             type HoldIdentifier = MockHoldIdentifer;
             type DomainRegistration = DomainRegistration;
             type ChannelFeeModel = ChannelFeeModel;
+            type MaxOutgoingMessages = MaxOutgoingMessages;
             /// function to fetch endpoint response handler by Endpoint.
             fn get_endpoint_handler(
                 #[allow(unused_variables)] endpoint: &Endpoint,

domains/pallets/messenger/src/tests.rs

@@ -9,8 +9,8 @@ use crate::mock::{
 use crate::pallet::OutboxMessageCount;
 use crate::{
     ChainAllowlist, ChainAllowlistUpdate, Channel, ChannelId, ChannelState, Channels,
-    CloseChannelBy, Error, FeeModel, Inbox, InboxResponses, InitiateChannelParams, Nonce, Outbox,
-    OutboxMessageResult, OutboxResponses, Pallet, U256,
+    CloseChannelBy, Error, FeeModel, Inbox, InboxResponses, Nonce, Outbox, OutboxMessageResult,
+    OutboxResponses, Pallet, U256,
 };
 use frame_support::traits::fungible::Inspect;
 use frame_support::traits::tokens::{Fortitude, Preservation};
@@ -32,16 +32,11 @@ use sp_trie::StorageProof;
 use std::collections::BTreeSet;
 
 fn create_channel(chain_id: ChainId, channel_id: ChannelId) {
-    let params = InitiateChannelParams {
-        max_outgoing_messages: 100,
-    };
-
     let list = BTreeSet::from([chain_id]);
     ChainAllowlist::<chain_a::Runtime>::put(list);
     assert_ok!(Messenger::initiate_channel(
         RuntimeOrigin::signed(USER_ACCOUNT),
         chain_id,
-        params,
     ));
 
     System::assert_has_event(RuntimeEvent::Messenger(
@@ -71,7 +66,7 @@ fn create_channel(chain_id: ChainId, channel_id: ChannelId) {
         msg.payload,
         VersionedPayload::V0(Payload::Protocol(RequestResponse::Request(
             ProtocolMessageRequest::ChannelOpen(ChannelOpenParams {
-                max_outgoing_messages: params.max_outgoing_messages,
+                max_outgoing_messages: 25,
                 fee_model: <chain_a::Runtime as crate::Config>::ChannelFeeModel::get()
             })
         )))

domains/pallets/transporter/src/mock.rs

@@ -54,6 +54,7 @@ parameter_types! {
     pub const ChannelInitReservePortion: Perbill = Perbill::from_percent(20);
     pub const ChannelFeeModel: FeeModel<Balance> = FeeModel{relay_fee: 1};
     pub TransactionWeightFee: Balance = 100_000;
+    pub const MaxOutgoingMessages: u32 = 25;
 }
 
 #[derive(
@@ -97,6 +98,7 @@ impl pallet_messenger::Config for MockRuntime {
     type HoldIdentifier = MockHoldIdentifer;
     type DomainRegistration = DomainRegistration;
     type ChannelFeeModel = ChannelFeeModel;
+    type MaxOutgoingMessages = MaxOutgoingMessages;
     /// function to fetch endpoint response handler by Endpoint.
     fn get_endpoint_handler(_endpoint: &Endpoint) -> Option<Box<dyn EndpointHandler<MessageId>>> {
         #[cfg(feature = "runtime-benchmarks")]

domains/runtime/auto-id/Cargo.toml

@@ -56,6 +56,7 @@ sp-storage = { default-features = false, git = "https://github.com/subspace/polk
 sp-subspace-mmr = { version = "0.1.0", default-features = false, path = "../../../crates/sp-subspace-mmr" }
 sp-transaction-pool = { default-features = false, git = "https://github.com/subspace/polkadot-sdk", rev = "94a1a8143a89bbe9f938c1939ff68abc1519a305" }
 sp-version = { default-features = false, git = "https://github.com/subspace/polkadot-sdk", rev = "94a1a8143a89bbe9f938c1939ff68abc1519a305" }
+static_assertions = "1.1.0"
 subspace-core-primitives = { version = "0.1.0", path = "../../../crates/subspace-core-primitives", default-features = false }
 subspace-runtime-primitives = { version = "0.1.0", path = "../../../crates/subspace-runtime-primitives", default-features = false }
 

domains/runtime/auto-id/src/lib.rs

@@ -66,6 +66,7 @@ use sp_subspace_mmr::domain_mmr_runtime_interface::{
 };
 use sp_subspace_mmr::{ConsensusChainMmrLeafProof, MmrLeaf};
 use sp_version::RuntimeVersion;
+use static_assertions::const_assert;
 use subspace_runtime_primitives::{
     BlockNumber as ConsensusBlockNumber, Hash as ConsensusBlockHash, Moment,
     SlowAdjustingFeeUpdate, SHANNON, SSC,
@@ -389,8 +390,12 @@ parameter_types! {
     pub const ChannelInitReservePortion: Perbill = Perbill::from_percent(20);
     // TODO update the fee model
     pub const ChannelFeeModel: FeeModel<Balance> = FeeModel{relay_fee: SSC};
+    pub const MaxOutgoingMessages: u32 = 25;
 }
 
+// ensure the max outgoing messages is not 0.
+const_assert!(MaxOutgoingMessages::get() >= 1);
+
 impl pallet_messenger::Config for Runtime {
     type RuntimeEvent = RuntimeEvent;
     type SelfChainId = SelfChainId;
@@ -416,6 +421,7 @@ impl pallet_messenger::Config for Runtime {
     type ChannelInitReservePortion = ChannelInitReservePortion;
     type DomainRegistration = ();
     type ChannelFeeModel = ChannelFeeModel;
+    type MaxOutgoingMessages = MaxOutgoingMessages;
 }
 
 impl<C> frame_system::offchain::SendTransactionTypes<C> for Runtime

domains/runtime/evm/Cargo.toml

@@ -66,6 +66,7 @@ sp-storage = { default-features = false, git = "https://github.com/subspace/polk
 sp-subspace-mmr = { version = "0.1.0", default-features = false, path = "../../../crates/sp-subspace-mmr" }
 sp-transaction-pool = { default-features = false, git = "https://github.com/subspace/polkadot-sdk", rev = "94a1a8143a89bbe9f938c1939ff68abc1519a305" }
 sp-version = { default-features = false, git = "https://github.com/subspace/polkadot-sdk", rev = "94a1a8143a89bbe9f938c1939ff68abc1519a305" }
+static_assertions = "1.1.0"
 subspace-core-primitives = { version = "0.1.0", path = "../../../crates/subspace-core-primitives", default-features = false }
 subspace-runtime-primitives = { version = "0.1.0", path = "../../../crates/subspace-runtime-primitives", default-features = false }
 

domains/runtime/evm/src/lib.rs

@@ -84,6 +84,7 @@ use sp_subspace_mmr::domain_mmr_runtime_interface::{
 };
 use sp_subspace_mmr::{ConsensusChainMmrLeafProof, MmrLeaf};
 use sp_version::RuntimeVersion;
+use static_assertions::const_assert;
 use subspace_runtime_primitives::{
     BlockNumber as ConsensusBlockNumber, Hash as ConsensusBlockHash, Moment,
     SlowAdjustingFeeUpdate, SHANNON, SSC,
@@ -534,8 +535,12 @@ parameter_types! {
     pub const ChannelInitReservePortion: Perbill = Perbill::from_percent(20);
     // TODO update the fee model
     pub const ChannelFeeModel: FeeModel<Balance> = FeeModel{relay_fee: SSC};
+    pub const MaxOutgoingMessages: u32 = 25;
 }
 
+// ensure the max outgoing messages is not 0.
+const_assert!(MaxOutgoingMessages::get() >= 1);
+
 impl pallet_messenger::Config for Runtime {
     type RuntimeEvent = RuntimeEvent;
     type SelfChainId = SelfChainId;
@@ -561,6 +566,7 @@ impl pallet_messenger::Config for Runtime {
     type ChannelInitReservePortion = ChannelInitReservePortion;
     type DomainRegistration = ();
     type ChannelFeeModel = ChannelFeeModel;
+    type MaxOutgoingMessages = MaxOutgoingMessages;
 }
 
 impl<C> frame_system::offchain::SendTransactionTypes<C> for Runtime

domains/test/runtime/auto-id/Cargo.toml

@@ -56,6 +56,7 @@ sp-storage = { default-features = false, git = "https://github.com/subspace/polk
 sp-subspace-mmr = { version = "0.1.0", default-features = false, path = "../../../../crates/sp-subspace-mmr" }
 sp-transaction-pool = { default-features = false, git = "https://github.com/subspace/polkadot-sdk", rev = "94a1a8143a89bbe9f938c1939ff68abc1519a305" }
 sp-version = { default-features = false, git = "https://github.com/subspace/polkadot-sdk", rev = "94a1a8143a89bbe9f938c1939ff68abc1519a305" }
+static_assertions = "1.1.0"
 subspace-core-primitives = { version = "0.1.0", path = "../../../../crates/subspace-core-primitives", default-features = false }
 subspace-runtime-primitives = { version = "0.1.0", path = "../../../../crates/subspace-runtime-primitives", default-features = false }
 

domains/test/runtime/auto-id/src/lib.rs

@@ -66,6 +66,7 @@ use sp_subspace_mmr::domain_mmr_runtime_interface::{
 };
 use sp_subspace_mmr::{ConsensusChainMmrLeafProof, MmrLeaf};
 use sp_version::RuntimeVersion;
+use static_assertions::const_assert;
 use subspace_runtime_primitives::{
     BlockNumber as ConsensusBlockNumber, Hash as ConsensusBlockHash, Moment,
     SlowAdjustingFeeUpdate, SSC,
@@ -388,8 +389,12 @@ parameter_types! {
     pub const ChannelInitReservePortion: Perbill = Perbill::from_percent(20);
     // TODO update the fee model
     pub const ChannelFeeModel: FeeModel<Balance> = FeeModel{relay_fee: SSC};
+    pub const MaxOutgoingMessages: u32 = 25;
 }
 
+// ensure the max outgoing messages is not 0.
+const_assert!(MaxOutgoingMessages::get() >= 1);
+
 impl pallet_messenger::Config for Runtime {
     type RuntimeEvent = RuntimeEvent;
     type SelfChainId = SelfChainId;
@@ -415,6 +420,7 @@ impl pallet_messenger::Config for Runtime {
     type ChannelInitReservePortion = ChannelInitReservePortion;
     type DomainRegistration = ();
     type ChannelFeeModel = ChannelFeeModel;
+    type MaxOutgoingMessages = MaxOutgoingMessages;
 }
 
 impl<C> frame_system::offchain::SendTransactionTypes<C> for Runtime

domains/test/runtime/evm/Cargo.toml

@@ -63,6 +63,7 @@ sp-std = { default-features = false, git = "https://github.com/subspace/polkadot
 sp-subspace-mmr = { version = "0.1.0", default-features = false, path = "../../../../crates/sp-subspace-mmr" }
 sp-transaction-pool = { default-features = false, git = "https://github.com/subspace/polkadot-sdk", rev = "94a1a8143a89bbe9f938c1939ff68abc1519a305" }
 sp-version = { default-features = false, git = "https://github.com/subspace/polkadot-sdk", rev = "94a1a8143a89bbe9f938c1939ff68abc1519a305" }
+static_assertions = "1.1.0"
 subspace-core-primitives = { version = "0.1.0", path = "../../../../crates/subspace-core-primitives", default-features = false }
 subspace-runtime-primitives = { version = "0.1.0", path = "../../../../crates/subspace-runtime-primitives", default-features = false }