Refactor chain information building process

bin/wasm-node/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Changed
+
+- The warp syncing algorithm no longer downloads the runtime code and the runtime call proofs at the same time. Instead, it now first downloads the runtime, then checks the list of available functions, then downloads runtime call proofs. While this slightly degrades the warp syncing time by adding a round-trip time, it is more correct to first analyze the runtime instead of blindly assuming that it supports a certain set of functions. ([#2845](https://github.com/paritytech/smoldot/pull/2845))
+
 ### Fixed
 
 - Fix the responses to libp2p identify requests being wrongly empty. ([#2840](https://github.com/paritytech/smoldot/pull/2840))

src/chain/chain_information.rs

@@ -43,10 +43,7 @@ use crate::header;
 use alloc::vec::Vec;
 use core::num::NonZeroU64;
 
-pub mod aura_config;
-pub mod babe_fetch_epoch;
-pub mod babe_genesis_config;
-pub mod grandpa_genesis_config;
+pub mod build;
 
 /// Information about the latest finalized block and state found in its ancestors.
 ///
@@ -190,8 +187,8 @@ pub enum ChainInformationConsensus {
         /// Babe epoch information about the epoch the finalized block belongs to.
         ///
         /// If the finalized block belongs to epoch #0, which starts at block #1, then this must
-        /// contain the information about the epoch #0, which can be found by calling
-        /// [`babe_genesis_config::BabeGenesisConfiguration::from_virtual_machine_prototype`].
+        /// contain the information about the epoch #0, which can be found by calling the
+        /// `BabeApi_configuration` runtime function.
         ///
         /// Must be `None` if and only if the finalized block is block #0.
         ///
@@ -210,8 +207,7 @@ pub enum ChainInformationConsensus {
         /// this field must contain the epoch that follows.
         ///
         /// If the finalized block is block #0, then this must contain the information about the
-        /// epoch #0, which can be found by calling
-        /// [`babe_genesis_config::BabeGenesisConfiguration::from_virtual_machine_prototype`].
+        /// epoch #0, which can be found by calling the `BabeApi_configuration` runtime function.
         finalized_next_epoch_transition: BabeEpochInformation,
     },
 }