feat: handle missing and inaccurate SendingTime

crates/hotfix/src/error.rs

@@ -28,6 +28,12 @@ pub enum MessageVerificationError {
         comp_id_type: CompIdType,
         msg_seq_num: u64,
     },
+    /// The sending time is not within the latency threshold.
+    #[error("sending time accuracy issue")]
+    SendingTimeAccuracyIssue { msg_seq_num: u64 },
+    /// The sending time field is missing from the message.
+    #[error("sending time missing")]
+    SendingTimeMissing { msg_seq_num: u64 },
     /// Original sending time is not provided despite PossDupFlag being set.
     #[error("original sending time missing")]
     OriginalSendingTimeMissing { msg_seq_num: u64 },

crates/hotfix/src/message.rs

@@ -13,6 +13,7 @@ pub mod reject;
 pub mod resend_request;
 pub mod sequence_reset;
 pub mod test_request;
+pub mod verification;
 
 pub use parser::RawFixMessage;