Merge pull request #7 from legion-labs/main

Moved checksum check sooner in the parsing for faster failures

Author: Rusty Rain

crates/sctp/src/packet.rs

@@ -93,6 +93,11 @@ impl Packet {
         let destination_port = reader.get_u16();
         let verification_tag = reader.get_u32();
         let their_checksum = reader.get_u32_le();
+        let our_checksum = generate_packet_checksum(raw);
+
+        if their_checksum != our_checksum {
+            return Err(Error::ErrChecksumMismatch.into());
+        }
 
         let mut chunks = vec![];
         let mut offset = PACKET_HEADER_SIZE;
@@ -130,11 +135,6 @@ impl Packet {
             chunks.push(c);
         }
 
-        let our_checksum = generate_packet_checksum(raw);
-        if their_checksum != our_checksum {
-            return Err(Error::ErrChecksumMismatch.into());
-        }
-
         Ok(Packet {
             source_port,
             destination_port,