I hate DKG

common/client-core/src/init/helpers.rs

@@ -151,7 +151,7 @@ pub async fn gateways_for_init(
     }
 
     let retry_count = retry_count.unwrap_or(DEFAULT_NYM_API_RETRIES);
-    let mut builder = nym_http_api_client::ClientBuilder::new_with_urls(nym_api_urls.clone())
+    let mut builder = nym_http_api_client::ClientBuilder::new_with_urls(nym_api_urls.clone())?
         .with_retries(retry_count)
         .with_bincode();
 

common/cosmwasm-smart-contracts/coconut-dkg/src/msg.rs

@@ -84,6 +84,10 @@ pub enum ExecuteMsg {
     UpdateAnnounceAddress {
         new_address: String,
     },
+
+    FixOldShare {
+        old_owner: String,
+    },
 }
 
 #[cw_serde]

common/http-api-client/src/lib.rs

@@ -296,6 +296,9 @@ impl std::error::Error for ReqwestErrorWrapper {}
 #[derive(Debug, Error)]
 #[allow(missing_docs)]
 pub enum HttpClientError {
+    #[error("did not provide any valid client URLs")]
+    NoUrlsProvided,
+
     #[error("failed to construct inner reqwest client: {source}")]
     ReqwestBuildError {
         #[source]
@@ -582,24 +585,29 @@ impl ClientBuilder {
             Self::new(alt)
         } else {
             let url = url.to_url()?;
-            Ok(Self::new_with_urls(vec![url]))
+            Self::new_with_urls(vec![url])
         }
     }
 
     /// Create a client builder from network details with sensible defaults
     #[cfg(feature = "network-defaults")]
+    // deprecating function since it's not clear from its signature whether the client
+    // would be constructed using `nym_api_urls` or `nym_vpn_api_urls`
+    #[deprecated(note = "use explicit Self::new_with_fronted_urls instead")]
     pub fn from_network(
         network: &nym_network_defaults::NymNetworkDetails,
     ) -> Result<Self, HttpClientError> {
-        let urls = network
-            .nym_api_urls
-            .as_ref()
-            .ok_or_else(|| {
-                HttpClientError::GenericRequestFailure(
-                    "No API URLs configured in network details".to_string(),
-                )
-            })?
-            .iter()
+        let urls = network.nym_api_urls.as_ref().cloned().unwrap_or_default();
+        Self::new_with_fronted_urls(urls.clone())
+    }
+
+    /// Create a client builder using the provided set of domain-fronted URLs
+    #[cfg(feature = "network-defaults")]
+    pub fn new_with_fronted_urls(
+        urls: Vec<nym_network_defaults::ApiUrl>,
+    ) -> Result<Self, HttpClientError> {
+        let urls = urls
+            .into_iter()
             .map(|api_url| {
                 // Convert ApiUrl to our Url type with fronting support
                 let mut url = Url::parse(&api_url.url)?;
@@ -611,15 +619,19 @@ impl ClientBuilder {
                         .iter()
                         .map(|host| format!("https://{}", host))
                         .collect();
-                    url = Url::new(api_url.url.clone(), Some(fronts))
-                        .map_err(|e| HttpClientError::GenericRequestFailure(e.to_string()))?;
+                    url = Url::new(api_url.url.clone(), Some(fronts)).map_err(|source| {
+                        HttpClientError::MalformedUrl {
+                            raw: api_url.url.clone(),
+                            source,
+                        }
+                    })?;
                 }
 
                 Ok(url)
             })
             .collect::<Result<Vec<_>, HttpClientError>>()?;
 
-        let mut builder = Self::new_with_urls(urls);
+        let mut builder = Self::new_with_urls(urls)?;
 
         // Enable domain fronting by default (on retry)
         #[cfg(feature = "tunneling")]
@@ -631,7 +643,11 @@ impl ClientBuilder {
     }
 
     /// Constructs a new http `ClientBuilder` from a valid url.
-    pub fn new_with_urls(urls: Vec<Url>) -> Self {
+    pub fn new_with_urls(urls: Vec<Url>) -> Result<Self, HttpClientError> {
+        if urls.is_empty() {
+            return Err(HttpClientError::NoUrlsProvided);
+        }
+
         let urls = Self::check_urls(urls);
 
         #[cfg(target_arch = "wasm32")]
@@ -640,7 +656,7 @@ impl ClientBuilder {
         #[cfg(not(target_arch = "wasm32"))]
         let reqwest_client_builder = default_builder();
 
-        ClientBuilder {
+        Ok(ClientBuilder {
             urls,
             timeout: None,
             custom_user_agent: false,
@@ -651,7 +667,7 @@ impl ClientBuilder {
 
             retry_limit: 0,
             serialization: SerializationFormat::Json,
-        }
+        })
     }
 
     /// Add an additional URL to the set usable by this constructed `Client`

common/http-api-client/src/registry.rs

@@ -21,6 +21,10 @@ inventory::collect!(ConfigRecord);
 /// Returns the default builder with all registered configurations applied.
 pub fn default_builder() -> ReqwestClientBuilder {
     let mut b = ReqwestClientBuilder::new();
+
+    #[cfg(feature = "debug-inventory")]
+    let mut test_client = ReqwestClientBuilder::new();
+
     let mut records: Vec<&'static ConfigRecord> =
         inventory::iter::<ConfigRecord>.into_iter().collect();
     records.sort_by_key(|r| r.priority); // lower runs first
@@ -35,6 +39,10 @@ pub fn default_builder() -> ReqwestClientBuilder {
 
     for r in records {
         b = (r.apply)(b);
+        #[cfg(feature = "debug-inventory")]
+        {
+            test_client = (r.apply)(test_client);
+        }
     }
 
     #[cfg(feature = "debug-inventory")]
@@ -47,7 +55,7 @@ pub fn default_builder() -> ReqwestClientBuilder {
         eprintln!("[HTTP-INVENTORY] Building test client to verify configuration...");
 
         // Try to build a client to see if it works
-        match b.try_clone().unwrap().build() {
+        match test_client.build() {
             Ok(client) => {
                 eprintln!("[HTTP-INVENTORY] ✓ Client built successfully");
                 eprintln!("[HTTP-INVENTORY] Client debug info: {:#?}", client);

common/http-api-client/src/tests.rs

@@ -93,7 +93,7 @@ async fn api_client_retry() -> Result<(), Box<dyn std::error::Error>> {
     let client = ClientBuilder::new_with_urls(vec![
         "http://broken.nym.badurl".parse()?,
         "http://example.com/".parse()?,
-    ])
+    ])?
     .with_retries(3)
     .build()?;
 

contracts/coconut-dkg/src/contract.rs

@@ -6,6 +6,7 @@ use crate::dealers::queries::{
     query_epoch_dealers_addresses_paged, query_epoch_dealers_paged,
     query_registered_dealer_details,
 };
+use crate::dealers::storage::{ensure_dealer, EPOCH_DEALERS_MAP};
 use crate::dealers::transactions::{
     try_add_dealer, try_transfer_ownership, try_update_announce_address,
 };
@@ -18,14 +19,16 @@ use crate::epoch_state::queries::{
     query_can_advance_state, query_current_epoch, query_current_epoch_threshold,
     query_epoch_at_height, query_epoch_threshold,
 };
-use crate::epoch_state::storage::save_epoch;
+use crate::epoch_state::storage::{load_current_epoch, save_epoch};
 use crate::epoch_state::transactions::{
     try_advance_epoch_state, try_initiate_dkg, try_trigger_reset, try_trigger_resharing,
 };
+use crate::epoch_state::utils::check_epoch_state;
 use crate::error::ContractError;
 use crate::state::queries::query_state;
 use crate::state::storage::{DKG_ADMIN, MULTISIG, STATE};
 use crate::verification_key_shares::queries::{query_vk_share, query_vk_shares_paged};
+use crate::verification_key_shares::storage::vk_shares;
 use crate::verification_key_shares::transactions::try_commit_verification_key_share;
 use crate::verification_key_shares::transactions::try_verify_verification_key_share;
 use cosmwasm_std::{
@@ -134,6 +137,36 @@ pub fn execute(
         ExecuteMsg::UpdateAnnounceAddress { new_address } => {
             try_update_announce_address(deps, info, new_address)
         }
+        ExecuteMsg::FixOldShare { old_owner } => {
+            let old_owner = deps.api.addr_validate(&old_owner)?;
+
+            let epoch = load_current_epoch(deps.storage)?;
+
+            // make sure we're not mid-exchange
+            check_epoch_state(deps.storage, EpochState::InProgress)?;
+
+            // make sure the requester is actually a dealer for this epoch
+            ensure_dealer(deps.storage, &info.sender, epoch.epoch_id)?;
+
+            for epoch_id in 0..=epoch.epoch_id {
+                if let Some(mut vk_share) =
+                    vk_shares().may_load(deps.storage, (&old_owner, epoch_id))?
+                {
+                    vk_share.owner = info.sender.clone();
+                    vk_shares().remove(deps.storage, (&old_owner, epoch_id))?;
+                    vk_shares().save(deps.storage, (&info.sender, epoch_id), &vk_share)?;
+                }
+
+                if let Some(mut vk_share) =
+                    vk_shares().may_load(deps.storage, (&info.sender, epoch_id))?
+                {
+                    vk_share.owner = info.sender.clone();
+                    vk_shares().save(deps.storage, (&info.sender, epoch_id), &vk_share)?;
+                }
+            }
+
+            Ok(Response::new())
+        }
     }
 }
 
@@ -259,7 +292,7 @@ pub fn migrate(deps: DepsMut<'_>, env: Env, _msg: MigrateMsg) -> Result<Response
     set_build_information!(deps.storage)?;
     cw2::ensure_from_older_version(deps.storage, CONTRACT_NAME, CONTRACT_VERSION)?;
 
-    crate::queued_migrations::introduce_historical_epochs(deps, env)?;
+    // crate::queued_migrations::introduce_historical_epochs(deps, env)?;
 
     Ok(Response::new())
 }

contracts/coconut-dkg/src/dealers/transactions.rs

@@ -110,7 +110,7 @@ pub fn try_transfer_ownership(
     DEALERS_INDICES.save(deps.storage, &transfer_to, &current_index)?;
     DEALERS_INDICES.remove(deps.storage, &info.sender);
 
-    // update registration detail for every epoch the current dealer has participated in the protocol
+    // update registration detail and share information for every epoch the current dealer has participated in the protocol
     // ideally, we'd have only updated the current epoch, but the way the contract is constructed
     // forbids that otherwise we'd have introduced inconsistency
     for epoch_id in 0..=epoch.epoch_id {
@@ -118,6 +118,11 @@ pub fn try_transfer_ownership(
             EPOCH_DEALERS_MAP.remove(deps.storage, (epoch_id, &info.sender));
             EPOCH_DEALERS_MAP.save(deps.storage, (epoch_id, &transfer_to), &details)?;
         }
+        if let Some(mut vk_share) = vk_shares().may_load(deps.storage, (&info.sender, epoch_id))? {
+            vk_shares().remove(deps.storage, (&info.sender, epoch_id))?;
+            vk_share.owner = transfer_to.clone();
+            vk_shares().save(deps.storage, (&transfer_to, epoch_id), &vk_share)?;
+        }
     }
 
     let Some(transaction_info) = env.transaction else {
@@ -262,6 +267,7 @@ mod tests_with_mock {
         contract.run_initial_dummy_dkg();
         let old_index = DEALERS_INDICES.load(&contract, &group_member)?;
         let old_details = EPOCH_DEALERS_MAP.load(&contract, (0, &group_member))?;
+        let old_share = vk_shares().load(&contract, (&group_member, 0))?;
 
         let not_group_member = contract.addr_make("not_group_member");
         let (deps, env) = contract.deps_mut_env();
@@ -291,13 +297,20 @@ mod tests_with_mock {
         assert!(EPOCH_DEALERS_MAP
             .may_load(&contract, (0, &group_member))?
             .is_none());
+        assert!(vk_shares()
+            .may_load(&contract, (&group_member, 0))?
+            .is_none());
 
         let new_index = DEALERS_INDICES.load(&contract, &new_group_member)?;
         let new_details = EPOCH_DEALERS_MAP.load(&contract, (0, &new_group_member))?;
+        let new_share = vk_shares().load(&contract, (&new_group_member, 0))?;
 
         // the underlying info hasn't changed
         assert_eq!(old_index, new_index);
         assert_eq!(old_details, new_details);
+        assert_ne!(old_share, new_share);
+        assert_eq!(old_share.owner, group_member);
+        assert_eq!(new_share.owner, new_group_member);
 
         assert_eq!(
             OWNERSHIP_TRANSFER_LOG.load(

nym-node-status-api/nym-node-status-api/src/metrics_scraper/mod.rs

@@ -57,7 +57,7 @@ async fn run(
         .clone()
         .expect("rust sdk mainnet default missing api_url");
 
-    let nym_api = nym_http_api_client::ClientBuilder::new_with_urls(vec![default_api_url.into()])
+    let nym_api = nym_http_api_client::ClientBuilder::new_with_urls(vec![default_api_url.into()])?
         .no_hickory_dns()
         .with_timeout(nym_api_client_timeout)
         .build()?;

nym-node-status-api/nym-node-status-api/src/monitor/mod.rs

@@ -98,7 +98,7 @@ impl Monitor {
             .expect("rust sdk mainnet default missing api_url");
 
         let nym_api =
-            nym_http_api_client::ClientBuilder::new_with_urls(vec![default_api_url.into()])
+            nym_http_api_client::ClientBuilder::new_with_urls(vec![default_api_url.into()])?
                 .no_hickory_dns()
                 .with_timeout(self.nym_api_client_timeout)
                 .build()?;