chore: decreased long poll timeout from 60s to 25s + race condition fix

src/ln_verification/http.rs

@@ -19,6 +19,12 @@ use crate::{
     shared::HomeserverAdminAPI,
 };
 
+/// Default timeout for long-polling verification requests
+/// Set to 25 seconds to be below common reverse proxy timeouts (30 seconds)
+/// This way, you don't have to deal with proxy timeouts like nginx cutting the connection
+/// before the application can respond with a timeout message.
+const DEFAULT_TIMEOUT_SECS: u64 = 25;
+
 pub async fn router(
     config: &EnvConfig,
     db: &crate::infrastructure::sql::SqlDb,
@@ -101,7 +107,7 @@ async fn await_verification_handler(
 ) -> impl IntoResponse {
     let response = match state
         .ln_service
-        .get_and_await_verification(&id, Duration::from_secs(60))
+        .get_and_await_verification(&id, Duration::from_secs(DEFAULT_TIMEOUT_SECS))
         .await
     {
         Ok(Some(response)) => response,