fix: all fast sync nodes report to peers as full nodes (#1547)

* fix: all fast sync nodes report to peers as full nodes

servers/src/common/types.rs

@@ -157,6 +157,32 @@ pub struct ServerConfig {
 	pub stratum_mining_config: Option<StratumServerConfig>,
 }
 
+impl ServerConfig {
+	/// Configuration items validation check
+	pub fn validation_check(&mut self) {
+		// check [server.p2p_config.capabilities] with 'archive_mode' in [server]
+		if let Some(archive) = self.archive_mode {
+			// note: slog not available before config loaded, only print here.
+			if archive != self
+				.p2p_config
+				.capabilities
+				.contains(p2p::Capabilities::FULL_HIST)
+			{
+				// if conflict, 'archive_mode' win
+				self.p2p_config
+					.capabilities
+					.toggle(p2p::Capabilities::FULL_HIST);
+				println!(
+					"ServerConfig - capabilities conflict with archive_mode: {}, force to: {:?}",
+					archive, self.p2p_config.capabilities,
+				); // note: slog not available before config loaded, only print here.
+			}
+		}
+
+		// todo: other checks if needed
+	}
+}
+
 impl Default for ServerConfig {
 	fn default() -> ServerConfig {
 		ServerConfig {